Biology

A species of fish living in a stream displays variation in body color. Fifty years ago, most of the fish were light colored but a few were dark colored. Over time, the clear water of the stream became cloudy and the population of dark-colored fish increased. Which statement explains why more dark colored fish were found after the water became cloudy
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using the development of reflecting telescopes as an example , explain how scientific inquiry leads to advances in technology
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A phospholipid is chemically similar to a fat molecule. Briefly explain how it is different.
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Suppose we found a solar system with the property described below. In light of what you have learned about the formation of our solar system, decide whether the discovery should be considered reasonable or surprising. (a): A solar system has 15 planets that all orbit the star in approximately the same plane. The two planets closest to the star are terrestrial and the rest are gas planets?
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Human carcinoembryonic antigen (CEACAM6)This gene codes for a protein that is located in the extracellular matrix. This protein is involved with cell cycle regulation, particularly with adhesion between cells. It is thought to be a proto-oncogene. When over-expressed, it becomes an oncogene, because it leads to unregulated cell division and inhibits cellular death T/F
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In pea plants being tall (T) is dominant over being short (t). Also in pea plants having green pods (G) is dominant over yellow pods (g). One plant named George, is heterozygous for height (Tt) and homozygous for yellow pods (gg). George is crossed with another plant named Cici that is homozygous for height (TT) and heterozygous for green pods (Gg). What gametes will the plant named George produce
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The characteristic of the human immunodeficiency virus (HIV) that makes it different from other RNA viruses is that it __________. View Available Hint(s) The characteristic of the human immunodeficiency virus (HIV) that makes it different from other RNA viruses is that it __________. can synthesize DNA from an RNA template causes hepatitis can synthesize mRNA from a double-stranded DNA template inserts into the DNA of the host
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Bacteria can regulate gene expression due to changes in the environment. How are these changes communicated to the cell?
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Tuberculosis (TB) is an example of an infectious disease that has been largely controlled in developed countries like the United States but remains a major cause of death in developing countries. Tuberculosis (TB) is an example of an infectious disease that has been largely controlled in developed countries like the United States but remains a major cause of death in developing countries. True False
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4 roomsWhat must be true for natural selection to happen?OA. The system must not be in Hardy-Weinberg equilibrium.OB. The population must be below carrying capacity.OC. All organisms must have the same alleles.OD. There can be no competition for resources,
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What does Socrates do when he finds a man with a reputation for wisdom? What three classes of people does Socrates question? How does he find all three lacking?
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In a study where participants rated the pleasantness of T-shirt odors, what gene alleles influenced their odor preference? a. Serotonin transporter b. Phosphatase enzyme c. Blood type d. Major histocompatibility complex
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Who were two of the most important anthropologists in the development of evolutionism in anthropology?
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Describe the manner in which you would determine how long ago two species of bacteria diverged from one another.
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Which of the following statements is/are accurate? A. Horses and Mules can be bred but their offspring is typically sterile. This could be an example of hybrid breakdown. B. One sponge species releases its gametes during the night and another species releases its gametes during the day. This is an example of ecological isolation C. One species of sea turtle mates during the early spring and closely related species mates during late spring. This is an example of temporal isolation D. One species of sea urchins can not fertilize another closely related species because the eggs do not have a receptor for the sperm. This is a good example of gametic isolation. E. Damselflies have sensory receptors that are sensitive to touch (tactile cues). Two related species of damselflies are unable to mate because their touch cues are not compatibale. This is a good example of mechanical isolation.
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1. Where do T-cells reach maturity?A. bone marrowC. thymusB. tonsilsD. lymph nodes
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Aerobic literally means "without oxygen." Aerobic activity is high-intensity activity. Group of answer choices True False
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What organ system is often the first to show signs and symptoms in multiple organ dysfunction syndrome (MODS)?
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What is the main purpose of the Ramsar convention?
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Which statement describes the outer planets
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Which two statements are true about dehydration synthesis? A. An OH group from one component and an H atom from the other form a water molecule. B. Polymers are broken down into shorter chains or monomers. C. Monomers or polymers are joined to form longer chains. D. A molecule of water is consumed. E. Its atoms are added to a bond, putting an OH group on one end and a hydrogen atom on the other.
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The darker parts occur on the cooler parts of the cat's body because the enzyme that catalyzes the formation of the dark pigment is more active when cool. This example shows that enzymes are affected by .
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In watermelons, solid green rind color (G) is dominant to stripes (g).A farmer crosses two watermelon plants that are heterozygous for rind color.What are the odds that the offspring will have solid green rinds?
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According to Yalom (2005), there are 11 therapeutic factors through which changes occur in group psychotherapy. Which factor correlates with learning to give to others?
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