Answer: it’s C
Explanation:
one characteristic that taxonomists use to distinguish protists from fungi is the presence of a nucleus. true or false?
Answer:
False.
Explanation:
Both protists and fungi are eukaryotic organisms, which means they have a true nucleus. Therefore, the presence of a nucleus cannot be used to distinguish between protists and fungi. Other characteristics such as cell structure, mode of nutrition, and reproduction are used to differentiate between these groups.
Select all the offspring phenotypes that could be
produced from a BbEE x bibee cross (shown
above)
black fur, red eyes
black fur, black eyes
white fur, black eyes
white fur, red eyes
Based on the cross, the possible phenotypes are:Black fur, red eyesWhite fur, red eyes
Answer:
Black fur, black eyes, white fur black eyes.
Explanation:
ow are recessive traits inherited when multiple alleles or sexlinked genes are involved?
When multiple alleles or sex-linked genes are involved, the inheritance of recessive traits can be a bit more complex than when only a single pair of alleles are involved.
Multiple alleles will refer to the existence of more than two alleles for a single gene. For example, a gene that controls blood type in humans has three alleles: A, B, and O. In this case, the expression of the recessive allele (O) depends on the presence of two O alleles, one from each parent. If an individual has one A allele and one O allele, the A allele will be dominant and the individual will have type A blood.
Sex-linked genes are genes located on the X or Y chromosomes, which determine an individual's sex. The X chromosome is present in both males and females, while the Y chromosome is present only in males. Because females have two X chromosomes, they are more likely to express recessive traits associated with X-linked genes.
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--The given question is incomplete, the complete question is
"How are recessive traits inherited when multiple alleles or sex linked genes are involved?"--
Describe the ecosystem. Is this a grassland? A forest? A desert?
Record abiotic factors you see in the ecosystem such as water, nutrients, rocks, and sun.
Document and describe the different types of plants, mushrooms, and animals that you see. Take pictures.
Measure a square 10 meters by 10 meters, and mark it off with the rope or cones. Describe every plant and animal species you encounter in the 100 square meters and count the number of individuals. If you are describing grass or some other extensive groundcover, estimate how much square footage it covers.
Use a dichotomous key to identify as many different plants as possible. You may need to take pictures and then use an online key later.
Answer:
An ecosystem is a community of living and non-living things that interact in a specific environment
Explanation:
It can include forests, grasslands, deserts, wetlands, etc. Abiotic factors include water, nutrients, rocks, sun, temperature, etc. Living components include plants, animals, fungi, and microorganisms. To understand an ecosystem, consider both its physical and biological components and their interactions.
after menstruation, estrogen levels decrease. what does this decrease in estrogen levels lead to? mark all that apply.
After the estrogen levels decrease after menstruation, this leads to a surge in the levels of progesterone, LH, FSH and GnRH.
Menstruation is the vaginal bleeding that occurs due to breakdown of the blood lining formed upon the endometrial layer of the uterus. The menstruation occur every month within a period of 28-32 days. The menstruations do not occur during pregnancy because the blood lining is required for the development of the fetus.
Estrogen is the female hormone produced in the ovaries of females. These hormones are required for the normal reproductive development of females. The adrenal glands and fat cells can also produce minute amounts of estrogen.
The given question was incomplete, and therefore has been answered in a general way.
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Uhh i need some help with this science assignment is due tomorrow..
1. The curves line which exhibits exponential growth is yellow line.
2. The two curves line which exhibits a carrying capacity is green line.
3. 1000 individuals is the carrying capacity of this graph.
4. In 23rd generation which this population reach its carrying capacity.
About CurveThe curve above shows a exponential growth as yellow line.
Exponential growth is a condition/event that experiences an exponential increase or increase in each period.
Exponential growth is expressed as follows:
Pn = P0 ( 1 + i )ⁿ
Information :
Pn = condition of the object during the eke-n period
P0 = initial condition of the object
i = growth percentage
n = period
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who was the first person to look at cells with a microscope
Celery stalks that are immersed in fresh water for several hours become stiff. Similar stalks left in a 0. 15 M salt solution become limp. From this we can deduce that the fresh water_____.
a. And the salt solution are both hypertonic to the cells of the celery stalks is hypotonic
b. And the salt solution is hypertonic to the cells of the celery stalks is isotonic
c. And the salt solution is hypertonic to the cells of the celery stalks is hypertonic
d. And the salt solution is hypotonic to the cells of the celery stalks
Celery stalks become stuff when immersed in freshwater but become limp in salt water because the salt solution is hypotonic to the cells of celery stalks. The correct option is Option D.
This condition occurs due to osmosis. Osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane. In salt solution, there is a higher concentration of solutes in the solution than in the cells of celery stalks. So it creates a hypotonic environment and the water moves out of the celery stalks hence it becomes limp. But in freshwater solution, water enters the cell and fills the spaces between the cells. So, the celery stalks become stiff when immersed in fresh water.
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which observation should the scientists see as most promising for developing a testable hypothesis that helps determine the connection between organic farming and biodiversity?
The observation that stands out as the most promising for developing a testable hypothesis is the observation that organic farming operations support a greater variety of species than conventional farming operations.
What is hypothesis?Hypothesis is an educated guess or prediction about the outcome of a scientific experiment or study. It is a statement that can be tested and verified through scientific research. A hypothesis is a tool used by scientists to organize and focus their research. It gives direction and structure to the research process, allowing the scientist to narrow their focus and avoid collecting unnecessary data.
This observation can be used to develop a hypothesis that organic farming supports higher biodiversity than conventional farming, and then this hypothesis can be tested by comparing biodiversity levels in organic and conventional farming operations.
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before traveling to the rest of the body, all absorbed nutrients or toxins must pass through the .
All ingested substances, whether nutrients or poisons, must pass through the liver before reaching the rest of the body.
Describe the liver.The liver is a gland and an organ in the human body. Its size is comparable to a football and it is spongy, wedge-shaped, reddish-brown in hue, and Depending on your height and weight, the size will change. The liver is a vital organ that serves hundreds of vital tasks for maintaining life.
Because it produces proteins and hormones that are required by other bodily components, it is also a gland. The liver is the largest internal organ in an adult, weighing on average three pounds. The liver is often found on the right side of the body, beneath the ribcage. The liver is on the left side in a condition known as situs inversus.
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Which human populations have the highest levels of genetic variation?
The human population which have the highest levels of genetic variation is referred to as Africans.
What is Genetic variation?This is referred to as the difference in DNA among individuals or the differences between populations and the sources of genetic variation include mutation and genetic recombination.
Nearly all genetic studies indicate greater diversity in African populations which is consistent with an African origin of modern humans and is also due to Africans being the most genetically diverse people in the world.
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the central nervous system is comprised of . a. the somatic and autonomic divisions b. the sympathetic and parasympathetic divisions c. your brain and spinal cord d. your body's organs and glands
The central nervous system (CNS) is comprised of the brain and spinal cord.
The brain is the most complex part of the CNS, and it is responsible for controlling and coordinating all the body's functions, from sensory processing and motor control to emotion, thought, and memory. The spinal cord is a long, thin column of nerve tissue that runs from the brain down the center of the back. It acts as a relay center for signals between the brain and the peripheral nervous system, which includes all the nerves that branch off the spinal cord and extend to other parts of the body.
Together, the brain and spinal cord make up the central nervous system and play a crucial role in regulating and coordinating the body's functions and responses to the environment. The CNS is protected by the skull and vertebral column, and it is surrounded by cerebrospinal fluid, which helps to cushion and protect the delicate nerve tissue. Any damage to the CNS can have serious consequences, so it is important to protect it from injury and disease.
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when studying population growth curves with a spectrophotometer, why is it unlikely that you will see the typical steep decrease of the curve during the death phase?
The spectrophotometer measures turbidity of the tube, that is encouraged via way of means of each dwelling and lifeless cells.
The unique pattern is diluted via way of means of streaking it over successive quadrants, the quantity of organisms decreases. Device for detecting and reading wavelengths of electromagnetic radiation, normally used for molecular spectroscopy; greater broadly, any of diverse units wherein an emission (as of electromagnetic radiation or particles) is unfold out in step with a few property (as strength or mass) right into a spectrum . A spectrometer is a systematic device used to research the mild residences of a luminous item or meditated mild.
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what is the main function of the nucleolus? it is the site of photosynthesis in photosynthetic cells.
Facilitating ribosome biogenesis is the main function of the nucleolus.
What role does the nucleolus play?The nucleolus, a structure in the nucleus, is in charge of the Ribosome Biogenesis process, which produces ribosomes by utilizing four different rRNAs.
The ribosome, which is where the protein synthesis takes place, is made up of the components that the nucleolus produces and puts together. By putting the ribosome subunits together, the nucleolus serves a supporting function in protein synthesis. Numerous r-genes located in the nucleolus are responsible for the nucleolus' ability to produce 50% of the RNA that is produced by the cells overall.
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What functional groups are in glucose?
Aldehyde, alcohol and hemiacetal are the functional groups in glucose.
Aldehyde, alcohol, and hemiacetal groups are found in glucose. Both straight-chain and other cyclic forms of glucose are known to exist. Aldehyde group is the functional group at C-1 in the straight-chain form. Alcohol groups make up the functional groups on C-2 to C-6. Hemiacetal group is the functional group on C-1 in the cyclic form.
One of the carbohydrates referred to as simple sugars is glucose, commonly known as dextrose (monosaccharides). The chemical formula for glucose is C6H12O6, which means "sweet" in Greek. It is the main free sugar present in higher animals' blood and can be found in fruits and honey. It is the source of energy for cellular activity, hence controlling its metabolism is crucial.
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Describe why woxygen to the is it body cells important For blood to transport
Answer:
When the red blood cells reach tissues that need oxygen, the oxygen is released from the haemoglobin and diffuses into the cells where it is used to make energy. All the systems in our body rely on oxygen to make energy.
Explanation:
the site where most of the atp is generated in a cell is the a. nucleus b. plasma membrane c. endoplasmic reticulum d. golgi apparatus e. mitochondria
The site where most of the ATP is generated in a cell is the mitochondria.
The mitochondria are known as the "powerhouses" of the cell because they are the primary site of cellular respiration, a metabolic process that generates ATP. During cellular respiration, glucose and oxygen are oxidized to produce energy in the form of ATP.
The process of ATP production in the mitochondria is called oxidative phosphorylation, which involves the transfer of electrons along an electron transport chain, coupled with the pumping of protons across the inner mitochondrial membrane, generating a proton gradient. This proton gradient drives the movement of protons back across the membrane, which in turn powers the ATP synthase complex to produce ATP.
ATP is an important molecule in the cell, as it serves as the main source of energy for cellular processes such as muscle contraction, active transport, and protein synthesis. The high concentration of ATP produced by the mitochondria helps to sustain the energy needs of the cell.
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what did the dna look like? relate what you know about the chemical structure of dna to what you observed today
How do you identify the family each shark belongs?
Sharks are members of the class Chondrichthyes' superorder Selachimorpha and subclass Elasmobranchii. Skates and rays are also members of the Elasmobranchii, while chimeras are members of the Chondrichthyes.
In the science of taxonomy, species are categorized and given names. It serves as the foundation for our knowledge of sharks and is essential to the protection of biodiversity. In order to comprehend each species' function within the ecosystem, it is essential to grasp who they are and how they are linked.
Sharks are members of the Animalia kingdom. Sharks are classified as members of the Phylum Chordata and Subphylum Vertebrata. This indicates that they have a backbone, notochord, and spinal cord. Chondrichthyes is the class that includes sharks.
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Which of the following explains why a high protein meal on Tuesday won’t be useful for building muscle protein on the weekend?
Amino acids are not required for building muscle proteins.
Your body would require at least two weeks to build the amino acids required for the muscle protein.
The human body cannot store amino acids that long.
The body would need an influx of glucose to build the protein, not amino acids.
Which one is correct^ help!
A high protein meal on Tuesday won’t be useful for building muscle protein on the weekend because the human body cannot store amino acids that long. Thus, third option is correct.
Since, the human body cannot store amino acids for an extended period of time, a high protein meal on Tuesday will not be useful for building muscle protein on the weekend. Amino acids are protein building blocks, and the body requires a steady supply of them to synthesise new proteins, including muscle proteins. However, because the body cannot store amino acids for long periods of time, a single high-protein meal will not provide the amino acids required for muscle protein synthesis over several days. As a result, it's critical to consume enough protein on a regular basis to support muscle protein synthesis and other bodily functions.
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why is a flower of pumpkin incomplete?
Answer:
each flower is lacking either the male or female structure
Answer: The reason is because each flower is lacking either the male or female structure
Explanation:
Which front brings several days of steady rain or snow into an area
A cold front is a front that provides a region many days of steady rain or snow.
In a noticeable surface trough of low pressure, a cold front is the leading edge of a cooler mass of air at ground level that replaces a warmer body of air. It frequently develops near the leading edge of an extratropical cyclone's cold air advection pattern, also referred to as the cyclone's dry "conveyor belt" flow, which is to the west in the Northern Hemisphere and to the east in the Southern Hemisphere. Temperatures on either side of the barrier can vary by more than 30 °C (54 °F). Rain can fall along the boundary if there is enough moisture in the air. A thin line of thunderstorms may develop along the frontal zone if there is substantial instability along the boundary.
A large rain shield may creep in behind the front if instability is insufficient, and the rain's evaporative cooling may enhance the temperature difference across the front. The transitional seasons of the fall and spring are when cold fronts are strongest, and the summer is when they are weakest. When a mass of air that is somewhat colder travels into an area of warmer air, it forms a cold front. The colder, drier air elevates the warmer, moister air at the surface by creating a steeply sloping boundary beneath it. When there is adequate moisture available, this frequently results in cloud formations with a strong vertical development that may seem as a line of showers and thunderstorms.
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krystyna investigated how a person's pulse rate changes when they exercise. She tested four of her friends. Belinda and Jasmina do a lot of sport. Jade and Mara prefer reading books and playing computer games. Krystyna measured the four girls pulse rates, in beats per minute, when they were relaxing .then she asked them to run up two flights of stairs , and measured their pulse again
From her investigation, Krystyna concluded that the level of physical activity a person engages in has a significant effect on their pulse rate.
What were the results of the investigation?After comparing the results, Krystyna found that the pulse rates of Belinda and Jasmina increased significantly when they ran up the two flights of stairs, which indicated that exercise had a strong impact on their heart rate. On the other hand, Jade and Mara's pulse rates only increased slightly, which indicated that exercise had a much lesser impact on their heart rate.
From her investigation, Krystyna concluded that the level of physical activity a person engages in has a significant effect on their pulse rate. Those who exercise regularly tend to have a more rapid increase in pulse rate when they engage in physical activity, whereas those who are less physically active tend to have a more modest increase in pulse rate. These results suggest that regular exercise can help to improve cardiovascular health and increase the body's ability to respond to physical activity.
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Students investigated the pitch of sound. They took two metal bowls of the same size. They filled half of one bowl and three-fourths of the second bowl with water. Using a wooden stick, they struck the edges of the bowls gently and sequentially. What is the difference in the pitch of the sound produced in both the bowls? Give reasons for your answers.
A sound wave, like any other wave, is introduced into a medium by a vibrating object. The vibrating object is the source of the disturbance that moves through the medium.
What is Pitch of sound?The vibrating object that creates the disturbance could be the vocal cords of a person, the vibrating string and sound board of a guitar or violin, the vibrating tines of a tuning fork, or the vibrating diaphragm of a radio speaker.
Regardless of what vibrating object is creating the sound wave, the particles of the medium through which the sound moves is vibrating in a back and forth motion at a given frequency.
The frequency of a wave refers to how often the particles of the medium vibrate when a wave passes through the medium. The frequency of a wave is measured as the number of complete back-and-forth vibrations of a particle of the medium per unit of time.
Therefore, A sound wave, like any other wave, is introduced into a medium by a vibrating object. The vibrating object is the source of the disturbance that moves through the medium.
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A wave is composed of oscillations that move with the particles being carried with them. True or False
Answer: Wave motion transfers energy from one point to another, often with no permanent displacement of the particles of the medium —that is, with little or no associated mass transport. They consist, instead, of oscillations or vibrations around almost fixed locations
Explanation:
7. A child who can roll their tongue (curl it) inherited an allele for tongue curling gene from both parents. What is the child's genotype for tongue curling?
homozygous
heterozygous
It's a homozygous recessive gene, I assume.
according to the endosymbiosis theory, what are the origins of the inner and outer membranes of mitochondria?
Both the inner and outer membranes are derived from the host cell that engulfed the bacterium.
The dominant evolutionary explanation for the formation of eukaryotic cells from prokaryotic creatures is symbiogenesis, often known as endosymbiotic theory or serial endosymbiotic theory.
The idea proposes that eukaryotic cells' mitochondria, plastids like chloroplasts, and perhaps other organelles are descended from prokaryotes that were formerly free-living and more closely related to bacteria than archaea. While chloroplasts are believed to be connected to cyanobacteria, mitochondria appear to be phylogenetically related to Rickettsiales bacteria.
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thinking about the minimum parental investment necessary for a biological offspring to survive, as an explanation of sex differences in mating strategies, is an example of:
This is an example of the concept of parental investment, which is an evolutionary theory that states that parents will invest more resources into their offspring when there is a greater chance of the offspring's survival and reproductive success.
Parental investment theory is also used to explain the differences in mating strategies between the sexes, as males are more likely to invest less in their offspring than females due to the lower costs associated with reproducing.
A biological offspring is an individual that is biologically related to its parents through the transmission of genetic material. This typically involves a process of sexual reproduction, in which two individuals (usually of different sexes) combine their genetic material to create a new organism that contains elements from both parents.
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What cytoskeletal element is susceptible to mitotic inhibitors?
The cytoskeletal element that is most susceptible to mitotic inhibitors is microtubules.
Microtubules are long, thin cylindrical structures made up of protein subunits called tubulin. They are an essential part of the eukaryotic cell's cytoskeleton and play a key role in cell division, or mitosis.
During mitosis, microtubules help to separate the chromosomes in the cell and distribute them evenly to the two daughter cells. Microtubules also help to organize the chromosomes and keep them aligned during the various stages of cell division.
Mitotic inhibitors are compounds that can disrupt the normal processes of cell division and are often used in cancer treatment to prevent cancer cells from dividing and growing. They do this by specifically targeting the microtubules and preventing them from functioning properly.
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why is high magnification not enough to give biological details of cells?
Microscopes allow us to see the microscopic world. While high magnification is useful for observing the overall shape and structure of a cell, it is not sufficient to reveal all the details of a cell. To see smaller structures and subcellular details, higher resolution microscopes are necessary. Therefore, understanding the limitations of microscopes and choosing the appropriate tool for the job is crucial in the study of biology.
When we observe a biological specimen through a microscope, the amount of information we can gather depends on the resolution of the microscope. Resolution is the ability of a microscope to distinguish two closely spaced structures as separate entities. In other words, it determines how much detail we can see in an image.
At high magnifications, we can see the overall shape and structure of the cell, but to see more details, we need a microscope with higher resolution. This is because many biological details of cells, such as the different organelles and subcellular structures, are too small to be resolved with a low-resolution microscope, even at high magnifications.
To achieve higher resolution, we need to use microscopes that utilize specific techniques such as electron microscopy or super-resolution microscopy. These techniques allow us to see smaller structures and details within a cell that are not visible with a conventional light microscope.
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