(c) transcription factors are likely to be the cytoplasmic proteins to which dioxin binds
Transcription factors are proteins involved in the process of converting, or transcribing, DNA into RNA. Transcription factors include a wide number of proteins, excluding RNA polymerase, that initiate and regulate the transcription of genes. The transcription factors Oct4, Sox2, Klf4 and Nanog act as triggers for the induction of somatic cells to pluripotent stem cells. Oct4, Sox2, Klf4 and Nanog are all essential in stem cells and play an important role in biological processes. According to recent data, the human genome encodes about 1500 regulatory sequence-specific DNA-binding factors (transcription factors, TFs) [7–9]. TFs constitute a large functional family of proteins directly regulating the activity of genes. There are 3 types of transcription factors: general, specific, and regulatory transcription factors.
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refer to the table. stepdescription1pr proteins and phytoalexins are expressed.2enzymes from pathogen attack plant cell wall.3defensive proteins exit the plant cell and attack the pathogen.4signaling molecules trigger gene expression of defensive proteins.5plant cell wall breakdown products bind to plant membrane receptors.
Pathogen enzymes assault the cell walls of plants. Plant membrane receptors are contacted by chemicals that break down plant cell walls, thus the correct option is (C) 2, 5, 4, 1, 3.
Pathogen enzymes destroy the plant cell wall, plant cell wall breakdown products attach to plant membrane receptors, signaling molecules initiate the synthesis of defense proteins, PR proteins and phytoalexins are produced, and defense proteins then leave the cell wall and engage the pathogen. Defensive protein gene expression is sparked by signaling molecules. There is expression of phytoalexins and PR proteins. Exiting from the plant cell, protective proteins engage the pathogen.
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The complete question is:
How can the steps in the table be ordered to describe a plant's response to an invading pathogen?
A. 1, 2, 5, 4, 3
B. 2, 5, 4, 1, 3
C. 5, 4, 3, 2, 1
D. 4, 3, 1, 2, 5
1. Enzymes from pathogen attack plant cell wall.
2. Plant cell wall breakdown products bind to plant membrane receptors,
3. Signaling molecules trigger gene expression of defensive proteins.
4. PR proteins and phytoalexins are expressed.
5. Defensive proteins exit the plant cell and attack the pathogen.
5. If a women starts ovulating at 13 and stops at 50 a) How many ova are likely to be released from her ovaries b) About how many of these are likely to be fertilized
a) 444 ova are likely to release from her ovaries. one ova is released during each menstrual cycle. The woman ovulated from 13 to 50, her fertility period was of 37 years. If we consider ovulation in every month the total ova released will be 444. b) All of the ova are likely to get fertilized.
a) It is unlikely for a fertilization to occur two days before ovulation. The progesterone and estrogen levels are high before the process of ovulation begins. Increase in progesterone and estrogen disturbs (endometrial shedding) the endometrium and fertilization cannot occur. b) After 2 days the possibility is of likely to get fertilized after ovulation as the level of Folicular stimulating hormone is high. Which creates suitable endometrium for fertilization to occur.
While fishing, a biology student makes the following observations:
1) Water spiders appear to be able walk on the surface of the water.
2) Flat rocks may be made to skip across the water.
Which of the following properties of water can explain these observations?
A) Water is an excellent solvent.
B) Water molecules create spheres of hydration around solute molecules.
C) Water molecules are cohesive.
D) Water molecules are often associated via hydrogen bonds.
E) both choices C and D
These facts can be explained by the cohesiveness of water molecules and the frequent association of water molecules through hydrogen bonds. Hence option 'E' is correct.
What does a water hydrogen bond do?The distinction in charge among hydrogen ions that are slightly positive and other hydrogen ions that are slightly negative results in hydrogen bonds, which are electrostatic forces that attract. Hydrogen bond is formed between nearby oxygen and hydrogen atoms of nearby water molecules with in case of water.
The formation of hydrogen bonds?Hydrogen bonding is a special sort of a dipole-dipole interaction among molecules that does not involve covalent binding to a hydrogen atom. It comes from of the force of attraction between an electronegative atom and a hydrogen atom that is covalently bound to an extremely electronegative atom, such as an N, O, or F atom.
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select all of these that are events of telophase i of meiosis. multiple select question. the nuclear membrane breaks down in most species homologues are aligned at the center of the cell chromosomes condense in most species the nuclear membrane reforms in most species homologues have reached their respective poles
The centrosomes separate, the chromatin compacts into smaller structures, and the nucleus loses some of its pronounced features.
What happens during the first meiotic telophase?Telophase I refers to the final stage of meiosis I. The nuclear membrane is repaired, the microtubules disassemble, and the spinning returns to its uncondensed state during telophase I. The splits into two heterogeneous daughter cells during the subsequent cytokinesis process.
What telophase 1 phases are there?After the genomes have finished migrating to the opposing ends of the cell, the stage is known as telophase I. Then two daughter cells will be created through cytokinesis. Following metaphase, these sister chromatids would pass through meiosis I and produce chromosomes that were genetically distinct.
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Ihe fast and long-distance movement of mitochondria along the axon of animal nerve cells is thought to be facilitated mainly by the motor proteins dynein and kinesin. Which (if any) of the following drugs is/are expected to reduce movement of mitochondria between the cell body and the terminal branch of an axon in animal nerve cells? (Circle YES or NO). YES/NO Excess 3-O-methyl glucose in the medium (prevents glycolysis by reducing glucose use by cells) YES/NO FCCP (inhibits mitochondrial production of ATP) YES/NO Cytochalasin D (disrupts actin filaments) activity) YES/NO BDM (inhibits myosin motor
The majority of the hydrogen gas required to drive a cell's metabolic operations is produced by mtDNA, which are lattice cell organelles (mitochondrion, singular).
What are mitochondria and what function do they do?Phosphocreatine, a tiny molecule, serves as a storage container for the biochemical energy generated by the mitochondria.Kinesin, dynein, and myosin work together just to move the mitochondria.
Additionally, motors, an anchoring mechanism, and a sensor are part of mitochondrial movement. Cyclin—dependent kinases kinase 5 inhibition and Transcription factor kinase 3 activation are other ways to stop mitochondrial mobility.
Kinesin 1, which is essential for mitochondria motility, is released by CDK5 and GSK3. No, since inhibiting metabolism has no impact on the mobility of mitochondria.
Because FCCP suppresses ATP synthase and decouples the acid gradient across the inner membrane, it can also stop mitochondria transport.
Therefore, Yes, as fibres in axons travel together with organelles. Mitochondrial mobility won't be happening if the actin filament is damaged. Yes, since mitochondrial axonal transportation is bidirectional.
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the following reactions are the free energy changes associated with four biological reactions. which reaction will have the highest ratio of products to reactants at equilibrium?
In this case, reaction A with a ΔG of -2.5 Kcal/mole will have the highest ratio of products to reactants at equilibrium compared to the other reactions.
The reaction with the most negative free energy change (ΔG) will have the highest ratio of products to reactants at equilibrium. Therefore, in this case, reaction A with a ΔG of -2.5 Kcal/mole will have the highest ratio of products to reactants at equilibrium compared to the other reactions. This indicates that the reaction is more energetically favorable and has a greater tendency to proceed in the forward direction, leading to higher product concentrations at equilibrium. However, as I mentioned earlier, the actual ratio of products to reactants at equilibrium also depends on various other factors, including temperature, pressure, and initial concentrations of reactants.
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The complete question is :
The following reactions are the free energy changes associated with four biological reactions. Which reaction will have the highest ratio of products to reactants at equilibrium?
A.ΔG =-2.5 Kcal/mole.
B.ΔG =-1.5 Kcal/mole.
C.ΔG = +2.5 Kcal/mole.
D.ΔG =+1.0 Kcal/mole
the cranial bones almost entirely surround the brain and protect it. which of the following terms best describes the relationship between the cranial bones and the brain?
Cranial bones almost entirely surround brain and protect it, the following terms best describes the relationship between cranial bones and the brain: -Cranial bones are anterior to the brain.
What is the function of cranial bones?The main function of the cranium is protecting brain, which consists of cerebrum, cerebellum, and brain stem. It also provides surface for the muscles of face to adhere to. They protect the brain and facial bones form framework of face and protect and provide support for nerves and blood vessels in that area.
The cranium is made up of cranial bones and facial bones (bones that form eye sockets, nose, cheeks, jaw, and other parts of face). Opening at the base of cranium is where the spinal cord connects to brain.
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cgegg based on your knowledge from the d103 cell bio class, which of the following amino acid changes would you make to prevent assembly of the nuclear lamina?
The nuclear lamina helps in breaking as just a function of phosphorylation of the lamina. Thus, inhibiting phosphorylation or dephosphorylation maintains the integrity of a nuclear lamina.
What is the phosphorylation procedure?Phosphorylation is a biological procedure in which phosphate is added to an organic molecule. As two examples, phosphate can be added to glucose to create glucose monophosphate or to adenosine phosphate group (ADP) to create adenosine triphosphate.
How does phosphorylation function and what is it?By altering the protein's structure, phosphorylation controls protein activity and cell signaling. The protein may be impacted by these modifications in one of two ways. First, the protein's catalytic activity is controlled by conformational alterations.
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A researcher is conducting an experiment in which cells in different phases of the cell cycle are fused together. The researcher then records what happens to the nucle of the resulting cell (Table 1). TABLE 1. COMBINATIONS OF CELLS THAT WERE FUSED AND THE PHASE OF NUCLEI IN THE RESULTING CELLPhase of Cell 1 Phase of cell 2 Phase of nuclel in Resulting CellS Phase G1 phase Two S-phase nuclelS Phase G2 Phase One S-phase nucleus and one G2-phase nucleusG1 phase G2 Phase One G1-phase nucleus and one G2-phase nucleus Interphase Mphase Two M-phase nucle Which of the following research questions is best addressed by the experiment? - How do chemical messengers affect a cell's transition between the phases of the cell cycle? - How does the number of chromosomes affect when a cell transitions to the next phase of the cell cycle? - How does the amount of genetic information change throughout the cell cycle?
resulting nuclei is best suited to address the research question: "How does the number of chromosomes affect when a cell transitions to the next phase of the cell cycle?"
This is because the experiment involves cells in different phases of the cell cycle, and the resulting cell nuclei represent different stages in the cell cycle.
During the cell cycle, cells undergo DNA replication, mitosis, and cell division, which are tightly regulated processes that involve a series of molecular events. The number and composition of chromosomes are critical factors in these events. The fusion of cells in different phases of the cell cycle is expected to produce cells with varying numbers of chromosomes and composition.
For example, the fusion of an S-phase cell with a G1-phase cell results in two S-phase nuclei with the same number and composition of chromosomes. Similarly, the fusion of a G1-phase cell with a G2-phase cell produces a cell with one G1-phase nucleus and one G2-phase nucleus, with different numbers and compositions of chromosomes.
Thus, the experiment can provide insights into how the number and composition of chromosomes influence a cell's transition from one phase of the cell cycle to another. This information is essential for understanding the fundamental biology of cell division and can have implications in fields such as cancer research, where uncontrolled cell division is a hallmark of the disease.
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Using the organs listed in item 3 above, record, by number, which would be found in the following abdominopelvic region:
Spinal cord: not in abdominopelvic region. Urinary bladder and rectum: hypogastric region. Right lumbar: ascending colon. Umbilical: small intestine, transverse colon.
The spinal cord is not an organ found in the abdominopelvic region, but rather it is located within the spinal column.
The urinary bladder and rectum are both primarily located in the hypogastric region of the abdominopelvic cavity.
Neither the right lumbar nor the umbilical region of the abdominopelvic cavity contain the urinary bladder or rectum. However, the right lumbar region would contain the ascending colon, while the umbilical region would contain the small intestine, transverse colon, and possibly parts of the duodenum and pancreas.
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The complete question is:
Using the organs listed in item that is spinal cord, urinary bladder,
rectum, which would be found in the following abdominopelvic regions:
hypogastric region
right lumbar region
umbilical region
true/false. a group includes its most recent common ancestor and all of its descendants, a group includes its most recent common ancestor but not all of its descendants, and a group does not include the most recent common ancestor of the organisms within the group.
All organisms in a taxon that have the same most recent common ancestor, including the ancestor, are included in monophyletic groups. A group is deemed paraphyletic.
What group is made up of all the descendants of the most recent common ancestor?A group of creatures is said to be monophyletic if all of its members share a most recent common ancestor, as well as all of that ancestor's descendants. A clade is a monophyletic group.
What is an organismal group that consists of an ancestor and all of its offspring?A clade is a collection of organisms that comprises both its ancestor and all of its offspring. A clade can be compared to a branch on the tree of life. The tree below displays a few clade examples.
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Which of the following is the best explanation for why the cells of the proximal convoluted tubule (PCT) contain so many mitochondria?
A) This provides the energy needed to fight kidney infection.
B) A great deal of active transport takes place in the PCT.
C) Contraction of the PCT moves filtrate through the tubule.
D) Cells of the PCT go through a great deal of mitosis.
The best explanation for the cells of the proximal convoluted tubule (PCT) contain so many mitochondria is contraction of the PCT moves filtrate through the tubule.
What are the functions of proximal convoluted tubules?The proximal convoluted tubule (PCT) is a segment of the renal tubule responsible for the reabsorption and secretion of various solutes and water. The PCT is located in the renal cortex, the outer part of the kidney, and is the first segment of the renal tubule.
The proximal tubule contributes to fluid, electrolyte, and nutrient homeostasis by reabsorbing approximately 60%–70% of the water and NaCl, a greater proportion of the NaHCO3, and nearly all of the nutrients in the ultrafiltrate.
A large amount of reabsorption occurs in the proximal convoluted tubule. Reabsorption is when water and solutes within the PCT are transported into the bloodstream. In the PCT this process occurs via bulk transport.
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Select all the past scientific conclusions that were later revised due to technological inventions and new data analysis methods.
The Earth is flat.
The Earth is the center of the universe.
All organisms are either plants or animals.
All of space is flat. The universe is centred on the earth. Either plants nor animals make up all living things.
It contains a summary of the findings, a determination of whether the hypothesis was confirmed, the importance of this study, and suggestions for further investigation. What exactly is a test? It is a thorough process intended to verify a hypothesis. If a new or revised theory explains all the old concept did and then some, scientists are inclined to accept it. All of space is flat. The universe is centred on the earth. Either plants nor animals make up all living things. Data analysis is the act of figuring out what the results of an experiment indicate, identifying patterns in that data, and speculating on the significance of those patterns.
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What is Nuclear envelope function or characteristic
Answer:
Envoiyer du nucleaire
Explanation:
logique
in a lake, mineral nutrients accumulate at the bottom while dissolved oxygen is greater near the surface. these nutrients can be mixed during water turnover that occurs with annual temperature changes. which one of the following properties of water explains this turnover?
The property of water that explains the annual turnover in a lake is its density. Water is at its highest density at 4°C and becomes less dense as it either cools or warms above this temperature
When a lake undergoes seasonal temperature changes, the surface water cools in autumn and winter, becoming denser and sinking to the bottom of the lake. This sinking of surface water and its replacement by warmer, less dense water causes a mixing of water and nutrients, which is known as a lake turnover.
As the density, cooler water sinks to the bottom, it brings oxygen to the bottom layers of the lake, which is necessary for aerobic respiration of organisms living there. The nutrient-rich bottom water, in turn, becomes mixed with the oxygenated surface water, creating a more homogenous distribution of both nutrients and oxygen throughout the lake.
The process of lake turnover is crucial for the survival of aquatic organisms in the lake, as it ensures that there is an adequate supply of oxygen and nutrients available to all organisms throughout the lake, regardless of their depth. It is also an important process for maintaining water quality and ecological balance in lakes.
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which of the following is the proper description of the human body in the anatomical position
Anatomical posture, also known as conventional anatomical position, describes how the body is positioned while it is standing straight up, facing forward, with both arms hanging by its sides and palms facing front.
Why is anatomical position significant? What is it?The body is upright in the anatomical posture, with the feet slightly apart and the arms at the sides. It is simple to recall since it looks similar to "standing at attention," with the exception that the palms are facing forward and the thumbs are pointing away from the body.
A person is standing straight up with their lower limbs close together or slightly apart, their feet flat on the ground, their palms facing front, and their upper limbs at their sides.
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What is the reason why muscle cells moves on its own
Answer:
Myosin utilizes the energy derived from ATP to move along actin filaments, causing cytoskeleton fibers to slide along one another. This action causes the entire cell to move forward. The cell moves in the direction of the detected signal.
Explanation:
Myosin utilizes the energy derived from ATP to move along actin filaments, causing cytoskeleton fibers to slide along one another. This action causes the entire cell to move forward. The cell moves in the direction of the detected signal.
Suppose a diploid European wild raspberry is completely heterozygous at all 14 of its chromosomes (2n = 14). How many different combinations of gametes can be produced by this European wild raspberry, assuming no homologous recombination between chromosomes? How many different combinations of gametes can be produced ?
Since the wild raspberry in Europe is diploid, there are two possible arrangements for its seven chromosomes.
Definition. Human cells are diploid, meaning they have 46 chromosomes, 22 combinations of autosomes, and a pair of intercourse chromosomes. A diploid cell is one that has each chromosome has two copies. Since the wild raspberry in Europe is diploid, there are two possible arrangements for its seven chromosomes. There are roughly 70,368,744,177,664 potential allele combinations for these genes in humans. There are two equally likely arrangements again for chromosomes inherited from of the two parents in a diploid cell having four chromosome (two homologous pairs) during metaphase I.
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What are the two types of imhertiance put forward by gregor mendel
The two types of inheritance which lead to the formulation of Mendel's laws known as laws of inheritance which are Law of Dominance and Law of Segregation.
What are Mendel's law?Mendel's laws of inheritance include 3 laws which are law of dominance, law of segregation and law of independent assortment.
The law of dominance states that the hybrid offspring will only inherit the dominant trait in the phenotype. The law of segregation states that each individual has two alleles where, only one allele is passed to the offspring, while the law of independent assortment states that the inheritance of one pair of genes is independent of the inheritance of the other pair.
Thus, the two types of inheritance which lead to the formulation of Mendel's laws known as laws of inheritance which are Law of Dominance and Law of Segregation.
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Characteristics
Begins with DNA replication
(yes or no)
Includes a stage of crossing-over of genetic information (yes or no)
Number of cell divisions
Number of daughter cells produced
Number of chromosomes in each daughter cell, compared to the parent cell
Purpose of the process
Mitosis
Meiosis
Meiosis and Mitosis are two processes of cell division. Meiosis is a type of cell division that results in the production of four genetically diverse daughter cells, each with half the number of chromosomes as the parent cell. It is a crucial process in sexual reproduction.
Mitosis, on the other hand, is the process of cell division in which a single parent cell divides into two identical daughter cells, each with the same number of chromosomes as the parent cell. Mitosis plays an important role in asexual reproduction, tissue growth, and repair.
Mitosis:
Begins with DNA replication: Yes
Includes a stage of crossing-over of genetic information: No
Number of cell divisions: 1
Number of daughter cells produced: 2
Number of chromosomes in each daughter cell, compared to the parent cell: Identical
Purpose of the process: Asexual reproduction, tissue growth, and repair.
Meiosis:
Begins with DNA replication: Yes
Includes a stage of crossing-over of genetic information: Yes
Number of cell divisions: 2
Number of daughter cells produced: 4
Number of chromosomes in each daughter cell, compared to the parent cell: Halved
Purpose of the process: Sexual reproduction, producing gametes with unique genetic combinations.
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The dominance pattern of a gene can be determined from the phenotypes of the parents and offspring. In the examples below, assume that each parent is homozygous for the specific allele and that the progeny are heterozygous. Classify each example as either complete dominance, incomplete dominance, or codominance. Classily each example as either complete dominance, incomplete dominance, or codominance. Complete dominance Incomplete dominance Codominance A mother with type A blood and a father with type B blood have a daughter with type AB blood. A mother with straight hair and a father with curly hair have a son with wavy hair A green fish and a yellow fish have mottled green and yellow offspring. A black sheep and a white sheep produce a gray lamb. A pea plant with all purple flowers and a pea plant with all white flowers produce a pea plant with all purple flowers
Gray lambs are born when black and white sheep have a heterozygous pregnancy. A daughter type AB blood is the result of a type A mother and . a peas plant with just purple blossoms and with only white flowers
What is an illustration of heterozygosity?If the several versions diverge from one another, you obtain a mutant gene for the specific gene. You might be heterozygous for hair color, for instance, if you have one gene for red hair and one allele for brown hair. The relationship between the two alleles determines which characteristics are expressed.
How may a trait be heterozygous?Being heterozygous in terms of genetics refers to having inherited different alleles (variations) of the a particular genomic marker from each biological parent. Heterozygous refers to a person who carries two versions of a specific genetic marker.
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if bsae pairs are distributed randomly throughput the chromosone, which of the following is closest to the number of cuts you would expect hind11 to amke
HindIII is a restriction enzyme that recognizes a specific DNA sequence and cuts both strands at that location.
If base pairs are distributed randomly throughout the chromosome, then we can assume that the probability of HindIII recognizing and cutting at any given location is equal. The specific DNA sequence recognized by HindIII is AAGCTT, which occurs once in every 4096 base pairs on average. Therefore, if we assume a chromosome size of 3 billion base pairs, we can estimate that HindIII would make approximately 732,421 cuts throughout the chromosome. However, it is important to note that this is just an estimate and the actual number of cuts could vary due to factors such as the presence of other restriction enzyme recognition sites and the three-dimensional structure of the chromosome. HindIII is a restriction enzyme that recognizes a specific DNA sequence and cuts both strands at that location.
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The articulations (joints) of the body tend to follow a pattern of increased strength causing less motion at the joint. Which of these joints is the strongest?
The body's articulations (joints) often follow a pattern of increasing strength while decreasing joint motion. The strongest joint in these joints is the one between the frontal bone and a parietal bone.
In a ball-and-socket joint, one bone's rounded, ball-like end slides into the cup-shaped socket of another bone. Due to the possibility of all movement types in all directions, this organization offers the widest range of motion. Joint with a ball and socket.
The ball-and-socket joint has the broadest range of motion. The concave articulation (the socket) of one bone fits into the rounded head (the ball) of the neighbouring bone at these joints.
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Correct Question:
The articulations (joints) of the body tend to follow a pattern of increased strength causing less motion at the joint. What type of these joints is the strongest?
Suppose a dog breeder breeds two black fur parents and they produce 8 puppies. Two (25%) of the offspring produced have yellow fur and six (75%) have black fur.
State which fur color is dominate.
State which fur color is recessive
What is the genotypes for the black fur?
What is the genotypes for the yellow fur?
Answer:
See below
Explanation:
Black is dominate and yellow is recessive
Genotypes would be (for example, us whatever letters you'd like): BB or Bb for black and bb for yellow
List the four types of bases found in a DNA molecule
Answer:
There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
Explanation:
Hope it helps:)
Answer:
There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
Explanation:
have great day!!!
What type of gas is a source of air pollution?
O oxygen
O helium
O carbon dioxide
O carbon monoxide
ACCORDING TO MODERN THEORIES, WHICH OF THE FOLLOWING IS A FUNCTION OF HUMAN HAIR? MAINTAIN TEMPERATURE OF TRUNK & LIMBS, TRANSMISSION OF SEXUAL SCENTS, MAINTAIN TEMPERATURE OF THE HEAD, PROTECT FROM DEBRIS, EXPRESS NONVERBAL COMMUNICATION.
According to the modern theories, the function of human hair is: maintain temperature of trunk and limbs.
Hairs are the filament like structures that emerge out from the body through the skin. The hairs are made up of proteins like the keratin. The hair emerges from the hair root and the region flanking outside the skin is called shaft.
The normal range of body temperature in which all the organs can function appropriately is 36.5–37.5 °C. The hairs of the whole body are also involved in thermoregulation as they lie flat when the temperature is warm and rise up when the body feels cold.
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Explain how influx of sodium results in a depolarization of neuron membrane in a positive feedback fashion?
The influx of sodium ions occurs when a stimulus is received by the nerve cells. This causes the opening of sodium ions channels, which changes the membrane voltage into positive and thus the stage of depolarization is achieved. This is done in order to begin next action potential.
Nerve cells are the neurons that function to transmit information in the form of electrical signals across the whole body. The nerve cells are the longest cells of the body as their structure is composed of a cell body with several dendrites and a long axon.
Action potential is the sequence of rapid changes in the membrane potential carried out to transmit the information from the nerve cell to another nerve cell, any other cell or tissue.
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all of the following events occur during telophase except that the . multiple choice question. nuclear membrane reforms to produce two separate nuclei pairs of sister chromatids begin to separate from each other chromosomes reach their respective poles and decondense nucleolus or nucleoli become visible
All of the following events occur during telophase except :pairs of sister chromatids begin to separate from each other.
What happens in telophase?During telophase, nuclear membrane reforms to produce two separate nuclei, chromosomes reach their respective poles, and the nucleolus become visible again. Separation of sister chromatids into individual chromosomes actually occurs during anaphase, which is the preceding stage of mitosis.
In anaphase, sister chromatids are pulled apart by the spindle fibers and move towards opposite poles of cell. Once the chromatids have reached their respective poles, cell progresses into telophase, during which nuclear envelope reforms around two sets of chromosomes, spindle fibers disassemble, and chromosomes begin to decondense. Cell divides in cytokinesis to produce two daughter cells.
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Which stage of the demographic transition would the United States be in?
Industrializing
Postindustrial
Preindustrial
Mature industrial
The United States has a relatively low birth rate and a high life expectancy, characteristic of the mature industrial stage.
What is the mature industrial stage?In the mature industrial stage, birth rates have declined due to increased access to family planning and women's education. Death rates have also declined due to improved public health and medical care. As a result, population growth is slower, and the population's age structure shifts towards an older demographic.
Explain demographic transition.The demographic transition is a model that describes changes in birth and death rates over time in a population as it transitions from preindustrial to industrial and postindustrial societies.
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