Answer:
In addition to the mRNA template, many molecules and macromolecules contribute to the process of translation. Translation requires the input of an mRNA template, ribosomes, tRNAs, and various enzymatic factors.
Explanation:
which is not a way molecules and ions can pass through a plasma membrane?
Exoendocytosis is not a way molecules and ions can pass through a plasma membrane.
What is Endocytosis?This is referred to as a cellular process in which substances are brought into the cell and it involves the use of mechanisms such as pinocytosis and phagocytosis.
Exocytosis is the form of active transport and bulk transport in which a cell transports molecules out of the cell and both processes move materials into or out of the cell that are too large to directly pass. However exoendocytosis isn't a type of method involved in the transportation of materials and is the reason why it was chosen as the correct choice.
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a particular e. coli cell contains a lac operon that continuously breaks down lactose into glucose and galactose. what could be a possible explanation for this occurrence?
The lac repressor is not encoded by the mutated I gene in the operon, which could be a possible explanation for this occurrence.
There are a number of possible causes for a specific E. coli cell's ongoing breakdown of lactose into glucose and galactose, including:
1. The lac operon is activated: The expression of genes involved in the breakdown of lactose is controlled by the genetic regulatory system known as the lac operon. The breakdown of lactose into glucose and galactose occurs when the lac operon is induced and the genes involved in lactose metabolism are expressed when lactose is present.
2. Expression of the lac operon in its basic form: The lac operon may be constitutively expressed in some instances, meaning that it is always active regardless of whether lactose is present. This could be the result of a mutation in the repressor protein, which normally regulates the expression of the operon or a mutation in the regulatory regions of the operon.
3. Lactose insufficiency: There will always be lactose for the E. coli cell to break down if it is growing in a high lactose environment. As a result, the breakdown of lactose into glucose and galactose can continue at a high rate.
4. Repression of the lac operon that is ineffective: When lactose is not present, the repressor protein that normally controls the expression of the lac operon may not be able to effectively turn off the operon if it is not functioning properly. The continuous breakdown of lactose into glucose and galactose as a result of this can be caused by the continuous expression of genes involved in lactose metabolism.
It is essential to keep in mind that the specific circumstances and genetic background of the cell would determine the specific explanation for the ongoing breakdown of lactose in this particular E. coli cell. To pinpoint the exact cause, additional research, such as genetic analysis, would be required.
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reddish loops of gas that link parts of sunspot regions is called?
Different areas of the sunspot regions are connected by prominences, which are reddish loops in gas. occasionally the. When loops of sunspot regions abruptly connect, a significant quantity of energy is released.
What are the gas loops on the Sun's surface called?Coronal loops, which appear in arcs just above Sun's surface, were ropey, curved strands of plasma. These loops glow because of hot, concentrated plasma. The coronal loops' distinctive shape is caused by the passage of electrified plasma along the curved lines of strong magnetic fields.
What are the red air loop between solar flares go by?The red-glowing looping substance is plasma, a hot gas comprised of electrically charged hydrogen and helium. The prominence plasma travels along an intricate web of magnetic fields created by the sun's internal dynamo.
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what disease is suggested by an increased hemoglobin concentration, leukocytosis, and thrombocytosis?
Answer:
polycythemia vera
Explanation:
polycythemia vera happens when bone marrow produces too many red blood cells
1
2) Explain how the abundance of C3 plants might change as regions around the world become warmer
and drier.
The C3 plants would tend to be fewer as the world would become warmer and drier
Explain how the abundance of C3 plants might change as regions around the world become warmer and drier.As regions around the world become warmer and drier, the abundance of C3 plants may decrease. C3 plants are sensitive to drought and high temperatures, which can limit their growth and reproduction.
Additionally, higher temperatures may also increase evapotranspiration, further reducing the amount of water available for these plants to grow. In these conditions, other plant species that are better adapted to arid environments, such as C4 plants and succulents, may become more prevalent.
However, this change may not occur uniformly, and may depend on a variety of other factors such as soil quality, regional rainfall patterns, and competition with other plant species.
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Explain why enzymes have an optimum pH
Enzymes have an optimum pH because their structure and activity can be affected by changes in the acidity or basicity of their environment.
Enzymes have an optimum pH because their structure and activity can be affected by changes in the acidity or basicity of their environment. At a given pH, the active site of an enzyme has an optimal balance of charged and uncharged amino acid residues that can efficiently bind substrates and catalyze reactions. Outside the optimum pH, changes in the charge of the active site and/or other parts of the enzyme can change its shape and reduce or even inhibit its activity. is a biomolecule that catalyzes They have an optimum pH because their structure and function are affected by changes in environmental acidity.
At optimal pH, the active site of an enzyme has the right balance of charged and uncharged amino acid residues, allowing it to bind substrate and efficiently catalyze the reaction. If the pH is too acidic or too basic, the morphology of the enzyme may change and its activity may be reduced or completely terminated, making it less efficient at catalyzing reactions. Therefore, enzymes have a specific pH range where they work best, called the pH optimum.
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1. The untied states is the only country that uses more water for industry this agriculture
True or false
2. Where does water made potable from water treatment plants come from ?
A. Lakes and rivers, B. Revervoirs, C. aquifers, D. all of the above
3. Which of the following is most likely to cause conflict between two countries that share a river?
A. The upstream country begins to pump extra water from their aquifers for increased irrigation efforts.
B. The upstream country builds increasing numbers of unlined landfills right near the river.
C. The downstream country sees an increase in industries dumping wastewater into the river.
D. Farms utilize pesticides that get washed into the river near the delta where the river empties into the ocean.
Potable water is water that is safe for human consumption. It refers to water that has been treated and disinfected to meet certain quality standards set by the government to ensure that it is free of harmful contaminants, such as bacteria, viruses, chemicals, and minerals.
The term "potable" is derived from the Latin word "potare," which means "to drink."
Potable water must meet certain standards for safety and quality, including being free from harmful levels of contaminants, bacteria, viruses, and chemicals.
In many areas, potable water is supplied by a public water system that is regulated by local or national authorities, but it can also come from private wells or other sources
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Look at the picture of the brain in your book on page 69 (Figure 2.19). Notice the
primary somatosensory area.
The primary somatosensory area
is in the parietal lobe. It is separated from the
primary motor area by a fissure known as the central sulcus. The central sulcus is a
fold in the cerebral cortex in vertebrates. Also called the central fissure, it was
originally called the fissure of Rolando or the Rolandic fissure, after Luigi Rolando.
The central sulcus is a prominent landmark of the brain, separating the parietal lobe
from the frontal lobe. Notice the distorted human body parts (called a "homunculus")
in the figure referred to above. These show the relative amount of dexterity provided
by the primary motor cortex and the relative amount of sensitivity provided by the
somatosensory cortex. According to the homunculus, what part(s) of the body have
the greatest dexterity and sensitivity?
A.torso (excluding arms and legs)
B.hands and feet
C.hands and the parts of the face
D.head (excluding the parts of the face), arms, and legs
The torso, which does not include the arms or legs, is said to have the most dexterity and sensitivity.
What is somatosensory function?The sensory system's component that deals with conscious awareness of sensation, pressure, pain, temperatures, position, movement, and vibration—all of which originate from the musculature, joints, skin, and fascia—is known as the somatosensory system.
What is somatosensory processing?The somatosensory system uses pain receptors and receptors embedded in the skin to detect tactile information about the body's contact with objects and its environment, and it uses extensions as well as synapses embedded in muscles, tendons, tendons, and joint surfaces to detect proprioceptive information about the body's position.
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why are chromogenic assays (as opposed to direct measurements at the wavelength which proteins naturally absorb light) used in the lab to measure protein concentrations?
Chromogenic assays are used in the lab to measure protein concentrations because they are more sensitive, specific, and convenient than direct measurements at the wavelength at which proteins naturally absorb light.
In direct measurements, it can be difficult to distinguish between different proteins that may have overlapping spectra. On the other hand, chromogenic assays involve adding a specific substrate to the protein sample and measuring the resulting color change, which can be used to quantify the amount of protein present. This method is more sensitive and specific as it allows for better discrimination between different proteins and reduces background interference.
In addition, chromogenic assays can be performed in a quicker and more automated manner than direct measurements, making them a convenient choice for many laboratories. By using chromogenic assays, the laboratory can efficiently and accurately measure protein concentrations in a range of sample types, including blood, plasma, and tissue samples.
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what will likely happen to ion flux in the axon hillock after a neuron has been exposed to 10mm gaba at the distal dendrite and 100um fluoxetine 10mm glutamate on the cell body?
The most likely to happen after a neuron has been exposed to 10mM GABA at the distal dendrite and 100uM fluoxetine + 10mM glutamate on the cell body will be: (3) Na+ flux into the neuron.
Na+ flux is the movement of sodium ions inside the nerve cell by crossing the plasma membrane. This event causes the depolarization of the cell membrane during the action potential resulting in positive environment inside the cell.
Neuron is also called the nerve cells which functions to transmit information into the whole body to and from the brain. The nerve cell is the longest in body due to its structure. The structure of neuron comprises of a cell body with several dendrites and a long axon ending at the axon terminal.
The given question is incomplete, the complete question is:
What will likely happen to ion flux in the axon hillock after a neuron has been exposed to 10mM GABA at the distal dendrite and 100uM fluoxetine + 10mM glutamate on the cell body?
Ca2+ flux out of the neuronK+ flux into the neuronNa+ flux into the neuronAll of the aboveTo know more about neuron, here
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Which of the following correctly defines essential amino acids?
All the amino acids are considered essential because we need them to survive.
Amino acids that we cannot find in food sources, so the human body must make them instead.
Amino acids that the human body is unable to produce.
Amino acids that can be stored by the body for a later time of need.
Which is correct^ help!
Answer:
C: Amino acids that the human body is unable to produce.
Explanation:
Essential amino acids are Amino acids that the human body is unable to produce. Option 3 (C)
Our bodies cannot produce these and they have to be taken through the foods that we eat.
which organ releases the erythropoietin-stimulating factor that directs stem cells in the bone marrow to make blood cells?
The kidneys are the organs which release the erythropoietin-stimulating factor which happens to direct the stem cells in the bone marrow to produce blood cells.
Erythropoietin is basically a hormone which our kidneys make in order to stimulate the production of the RBCs or the red blood cells. High or low levels of the hormone erythropoietin can lead to health problems. Red blood cells are important as they deliver oxygen to the tissues in our body.
When the specialized cells present in our kidneys detect that there is low blood oxygen levels, they increase the production of erythropoietin stimulating factor which stimulates the spongy tissue present inside our bones marrow to produce more red blood cells.
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50 POINTS!!!! PLEASE HELP!!!
please please please help!
A simulation of the effect of natural selection over a 5-year and 10-year period will show that organisms with favorable traits will increase in population while those with deleterious traits that would not enable them to survive in their environment will eventually die off.
What is natural selection?Natural selection is the variation in individual survival and procreation brought on by phenotypic variances. The evolution of a population's heritable features across generations is a fundamental mechanism of evolution.
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how might a geologist determine the health of the soil in an ecosystem? multiple select question. document how the soil developed. measure the natural flux of organic material in the soil, plants, and water. monitor the causes of erosion. determine the rate of movement of the tectonic plate the ecosystem resides on.
A geologist may identify the potential causes for the creation analysed the evidence, such as meteoroid pieces, to decide a meteoroid impact was the best explanation made observations about significant features and examined the geologic background of the crater.
In order to calculate soil organic matter, multiply soil C by 1.72.The results of this approach may be impacted by high soil levels of carbonates or manganese. Carbonates and manganese can be eliminated from soil by pretreating it with 0.1N HCl.
Particles, most frequently sand, impact the pipe wall and cause erosion. This could result in rapid and localised metal loss, raising the operational risk for both assets and personnel. Non-intrusive erosion monitoring measures pipe wall thickness and tracks erosion using extremely accurate ultrasonic technology.
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Q.1.Multiple select questions.
(i)How might a geologist determine the health of the soil in an ecosystem? (ii)Document how the soil developed.(iii)Measure the natural flux of organic material in the soil, plants, and water. (iv)Monitor the causes of erosion.
(v)Determine the rate of movement of the tectonic plate the ecosystem resides on.
What system of membranes enclose the brain and spinal cord?
The system of membrane which perform the function of enclosing the brain and the spinal cord are known as the meninges.
The meninges are basically the three layers of protective tissue which are the dura mater, arachnoid mater, and the pia mater that surround the neuraxis and are found in mammals. The meninges of the brain as well as the spinal cord are continuous and are linked through the magnum foramen.
The cerebrospinal fluid is basically located in the subarachnoid space which is present between the arachnoid mater and the pia mater. The key function of the meninges is to be able to protect the central nervous system from injuries. Injuries which involve the meninges, can result in a hemorrhage and even two types of hematoma.
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the systemic circulatory system a. begins at the left ventricle. b. is responsible for distributing blood to the entire body. c. ends at the right atrium. d. all of the above
The systemic circulatory system begins at the left ventricle which is responsible for distributing blood to the entire body and ends at the right atrium. Option D is correct.
The systemic circulatory system begins at the left ventricle of the heart and is responsible for distributing oxygenated blood to the entire body. The blood is pumped from the left ventricle into the aorta, which branches into smaller arteries that carry the blood to the tissues.
The systemic circulation then ends at the right atrium of the heart, where the deoxygenated blood returns from the body to be pumped back to the lungs to receive fresh oxygen. The systemic circulation plays a vital role in maintaining the health and function of the body by delivering oxygen and nutrients to the tissues and removing waste products.
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scientists think that natural selection that results in a population containing individuals that exhibit two different phenotypes, also known as
Scientists think that natural selection that results in a population containing individuals that exhibit two different phenotypes, also known as disruptive selection.
Disruptive selection, also called diversification selection, describes changes in population genetics in which extreme values of a trait are favored over median values. In this case, the trait variance increases and the population splits into two different groups.
Examples of disruptive selection are dark and light oysters. Both Dark Oyster and Light Oyster have a stealth effect. Light oysters blend into rocks, and dark oysters can hide behind rocks. Destructive selection occurs when individuals with intermediate phenotypes are less fit and favor extreme phenotypes than those with higher and lower phenotypes. This can occur, for example, when she has two different food sources or predators with different prey size preferences.
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a random change in allele frequencies over time is known as: group of answer choices genetic drift gene flow admixture gene migration none of these
a random change in allele frequencies over time is known as genetic drift.
A population's frequency of alleles, or gene variants, may fluctuate randomly over time due to genetic drift, a mechanism of evolution. It takes place when an allele's frequency varies due to chance rather than natural selection.
Small populations are particularly vulnerable to the effects of genetic drift because random occurrences like the death of people who carry a particular allele might result in a disproportionate loss of that allele from the gene pool. Even if these alleles did not have any specific advantages or disadvantages, over time, this can cause a change in their frequency in the population.
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9. What does the term mutation mean in regards to human genetics?
In genetics, a mutation is a change that occurs in the DNA sequence of an individual. This change can affect the genetic information passed from one generation to another. Mutations can occur spontaneously, or they can be caused by environmental factors such as radiation or exposure to chemicals. In human genetics, mutations can lead to genetic disorders or predisposition to certain diseases. Some mutations may have no effect at all, while others may have a significant impact on an individual's health and well-being.
Answer:
Mutations are serious malfunctions to the human genetics. An example is cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Explanation:
describe the rate of uptake of nitrate ions along the root
Answer:
Roots absorb water and mineral ions through root hair cells and are transported ... are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. ... The size of the stomatal opening is used by the plant to control the rate of ... A diagram showing the stoma open and closed.
The rate of uptake of nitrate ions along the root depends upon nitrate concentration in the soil and water availability.
What are the factors influencing the nitrate ions uptake along the root?
Nitrate is a major source of nitrogen for plant growth and is absorbed by the roots from the soil solution. The nitrate uptake rate by roots is influenced by several factors such as the concentration of nitrate in the soil, the availability of water, and the characteristics of the root system.
The nitrate uptake occurs through the root epidermis, which is covered by root hairs which are the primary sites of nutrient uptake and increases the root surface area. The specific transporters located root hair plasma membrane was used for nitrate uptake.
The nitrate uptake rate by roots is influenced by nitrate concentration in the soil. When nitrate concentration is low, plants increase the nitrate transporters expression to increase the nitrate uptake. This process is known as nitrate induction.
Water availability also influences nitrate uptake rate as it is required for active transport of ions across the plasma membrane to increase the rate of nitrate uptake.
Therefore, rate of nitrate uptake depends upon nitrate concentration in the soil and water availability.
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the sequence of gradual changes which takes place in the primitive organisms over millions of years in which new species are produced is known as
The sequence of gradual changes in primitive organisms over millions of years that result in the production of new species is known as evolution.
Evolution is the process by which populations of organisms change over time through mechanisms such as mutation, natural selection, genetic drift, and gene flow.
Evolution is a central concept in the field of biology, and it provides a scientific explanation for the diversity of life on Earth. The theory of evolution was first proposed by Charles Darwin and Alfred Russel Wallace in the mid-19th century, and it has since been supported by a wealth of empirical evidence from the fields of genetics, comparative anatomy, and paleontology.
The process of evolution is driven by natural selection, which is the mechanism by which certain traits become more or less common in a population over time based on their relative fitness. Traits that provide a reproductive advantage tend to become more common in a population, while traits that are disadvantageous tend to become less common.
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if someone with auburn hair has children with someone with red hair (but whose mother had black hair), what are the genotype and phenotype probabilities for their children?
Nearly 50% of genotypes and phenotypes are having possibilities.
Mendel noted in his breeding studies that 100% of the YG progeny will have a yellow phenotype because the Y (yellow) allele is dominant over the G (green) allele in pea plants.
In a different illustration (shown below), if the male parent plants are heterozygous (YG), there will typically be 25% YY, 50% YG, and 25% GG offspring. These percentages are based on the fact that each of a Punnett square's four offspring boxes is 25%. (1 out of 4).
Blonde, either HBdHBd or HBdhBk HBdHBr = mousy brown
Strawberry blonde is HBdhR. Brown is HBrHBr or HBrhBk.
HBrhR stands for auburn and hRhBk for red.
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of the elements below, two are much more abundant in earth's crust than in living organisms. what are these two elements?
Iron and silicon are more abundant then living organism .
In general the earth's crust is composed up of eight major elements. Were Oxygen is placed at the top in the list when we talk about the abundance, On the other hand the planet's shell is being composed of almost 47% of this nonmetallic chemical element. Also Silicon holds the second-place at nearly 28% by weight.
Hence, the elements that occurs in the highest quantities in living organisms are oxygen, carbon, hydrogen, nitrogen, and phosphorus. They together makes up about 99% of their living mass. Minerals that combine with these two elements are known as the silicates.
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The random movement of molecules down their concentration gradient is called:__________
The random movement of molecules down the concentration gradient is called diffusion. Here the molecules move from a region of higher concentration to lower concentration.
One example of movement of molecules down the concentration gradient is the movement of oxygen. Oxygen which is breathed in into the lungs have a higher concentration than the blood stream reaching lungs. Thus oxygen is diffused into the blood RBCs. This blood reaches the tissues. Now concentration is higher in blood than the tissues. So the oxygen diffuses into the tissues.
Another molecule which undergo diffusion is glucose. After digestion, concentration of glucose is higher in small intestine. So it diffuses into blood capillaries. When this reaches the cells it again diffuses down the concentration gradient. Water also moves down the concentration gradient and is called osmosis.
Only selected molecules undergo diffusion in human body. So the movement down the concentration gradient is called diffusion.
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Please select the characteristics exhibited by most protozoans. Check all that apply Unicellular Cell walls containing cellulose Motile by means of flagella, cilia or pseudopodia Heterotrophic 3 μm-300 μm size range Contain a nucleus and variety of organelles
Protozoans can move around their aquatic environments thanks to their motility; almost all of them have flagella, cilia, or pseudopodia.
What's a protozoa's structure?They are eukaryotes with only one cell. Its nucleus is encased in a membrane, just like the nuclei of other eukaryotic cells. Additionally, the nucleus has vesicular and has scattered chromatin, giving it a diffuse look. In addition, every nucleus in a single organism looks the same.
Cell walls: do they exist in protozoans?Protozoa have cell walls, can migrate during some phases of their cycle, and can consume food particles, just like animal cells. However, certain phytoflagellate protozoa resemble plants and produce energy through photosynthesis. The normal interior features of an animal are present in protozoan cells.
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even if two colonies on a streak plate are touching, it is okay to use them for further testing when trying to identify or characterize a bacterial species. T/F
Even if two colonies on a streak plate are touching, it is okay to use them for further testing when trying to identify or characterize a bacterial species, which is false as touching colonies on a streak plate indicates bacterial overgrowth.
What is the significance of the streaking technique?Proper streaking technique involves streaking the bacteria in a way that results in isolated colonies, while contaminated colonies do not provide the pure culture that is necessary for accurate bacterial identification.
Hence, even if two colonies on a streak plate are touching, it is okay to use them for further testing when trying to identify or characterize a bacterial species, which is false as touching colonies on a streak plate indicates bacterial overgrowth.
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Place the following steps of lymphatic flow in the correct order beginning with the interstitial fluid and ending with the blood vessels.a. Interstitial fluidb. Lymph capillariesc. Lymph vesselsd. Lymph trunkse. Lymph ductsSubclavian veins
a. Interstitial fluid - This is the fluid that surrounds the cells in the body and collects waste products from them.
What is cells?Cells are the basic unit of life. They are microscopic and contain the genetic material that makes up all living organisms. Cells come in many different shapes and sizes and perform a variety of functions that are essential for the survival of the organism
b. Lymph capillaries - These are small, thin vessels located in the interstitial spaces that collect the interstitial fluid and direct it to the lymph vessels.
c. Lymph vessels - These vessels carry the interstitial fluid to the lymph nodes, where it is filtered and then directed to the lymph trunks.
d. Lymph trunks - These are larger vessels that carry the filtered fluid to the lymph ducts.
e. Lymph ducts - These are the largest lymphatic vessels that carry the filtered fluid to the subclavian veins, which in turn drain it into the bloodstream.
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Which process changes metamorphic rock into sedimentary rock?
Deposition and Burial
Weathering and Erosion
Compaction and Cementation
Solidification
Melting
Heat and Pressure
Answer and Explanation: The three processes that transform metamorphic and sedimentary rock into sediment are weathering, erosion, and dissolution. These three processes are quite similar in the fact that they break down all types of rocks into sediment.
Which organism is an example of an organism created with recombinant DNA?
A: corn with a gene from bacteria inserted into its genome
B: different dog breeds created by selecting for different traits
C: daisies with striped flowers created by pollinating two different daisy plants
D: potatoes cloned as exact copies of other potato plants
Corn with a gene from bacteria inserted into its genome is an example of an organism created with recombinant DNA. So, the correct option is A.
What is Recombinant DNA?Recombinant DNA molecules are defined as DNA molecules formed by laboratory methods of genetic recombination that bring together genetic material from multiple sources which create sequences that would not otherwise be found in the genome.
The main focus of all genetics is the gene which is the basic goal of laboratory geneticists is to isolate, characterize, and manipulate genes.
Thus, Corn with a gene from bacteria inserted into its genome is an example of an organism created with recombinant DNA. So, the correct option is A.
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Answer: corn with a gene from bacteria inserted into it's genome .
Explanation: i took the test !
in infancy, growth spurts may occur in a single day and alternate with long time frames of little or no growth for days and weeks. True/False ?
True,in infancy, growth spurts may occur in a single day and alternate with long time frames of little or no growth for days and weeks.
What is infancy?Infancy is the earliest stage of life, beginning at birth and lasting up to two years of age. This is a time of rapid development, as infants learn and grow at a remarkable rate. During infancy, babies learn to control their body movements, recognize and respond to the people and objects around them, express their basic needs, and develop emotional connections with those who care for them. Infants also begin to understand and use language, form relationships with others, and explore their environment. During this time, infants need a safe and loving environment in which their physical, emotional, and cognitive needs can be met. Parents can provide this by responding to their baby's needs, playing with them, and providing comfort, love, and affection.
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