Ultimate Biology Study Guide - Questions & Answers

ms. t. has come for a prenatal visit. she complains of dependent edema, varicosities in the legs, and hemorrhoids. the best response is:
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which part of the mitochondrial atp synthase binds h and transports it down its concentration gradient in order to drive atp synthesis?
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a branch of the autonomic nervous system that prepares the body for activity by speeding up the heart rate is called the system.
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what is the major advantage of a differential stain, such as the gram stain, over a simple stain? was this observed in your experiment?
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trace the movement of a hormone from the organ that produces it to its target binding site (organ or tissue). how does this hormone get from the organ/gland that produces it to its binding site
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motor neurons release the neurotransmitter acetylcholine (ach) and acetylcholinesterase degrades ach in the synapse. if a neurophysiologist applies onchidal (a naturally occurring acetylcholinesterase inhibitor produced by the mollusc onchidella binneyi) to a synapse, what would you expect to happen? motor neurons release the neurotransmitter acetylcholine (ach) and acetylcholinesterase degrades ach in the synapse. if a neurophysiologist applies onchidal (a naturally occurring acetylcholinesterase inhibitor produced by the mollusc onchidella binneyi) to a synapse, what would you expect to happen? convulsions due to constant muscle stimulation paralysis of muscle tissue decrease in the frequency of action potentials no effect
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after the drought of 1977, researchers on the island of daphne major hypothesized that medium ground finches that had large, deep beaks survived better than those with smaller beaks because they could more easily crack and eat the tough tribulus cistoides fruits. if this hypothesis is correct, what would you expect to observe if a population of these medium ground finches colonizes a nearby island where t. cistoides is the most abundant food for the next 1000 years? assume that (1) even the survivors of the 1977 drought sometimes had difficulty cracking the tough t. cistoides fruits and would eat other seeds when offered a choice; and (2) food availability is the primary limit on finch fitness on this new island.
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the selective toxicity of the sulfa drugs is due to the fact that bacteria . . . choose one:a. synthesize folic acid while mammals use preformed folic acid.b. have cell walls while mammals do not.c. polymerize nucleotides into nucleic acids while mammals do not.d. can take up sulfa drugs
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gremlins are creatures that should not be exposed to sunlight, should not get wet, and should absolutely never be fed after midnight. how would determine a gremlins diploid chromosome number
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what can we conclude about the herto skulls from ethiopia? group of answer choices they are distinctly archaic. they have a combination of archaic and modern features. they are distinctly modern. they are considered homo habilis.
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in criminal cases where dna evidence was used to overturn a previous conviction because the evidence exonerated the accused (and potentially imprisoned) person, what was found to be the compelling factor in more than 70 percent of the original cases that led to the wrongful conviction?
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using the group of cards just described in this section, the probability of drawing a red five is: choose... .
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in which of the following time spans will fatty acids be the major source of fuel for the tissues of the body?
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select all of the following processes that can cause changes in allele or genotype frequencies in populations.
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a motile bacterium with flagella arranged in a tuft at one of the cell has this type of flagellar arrangement:
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match the letter of the meiosis phase during which each event occurs. some answers may be used more than once.
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a group of organisms that can breed and produce fertile offspring is known as a ...
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Water is essential for life and is important for plant growth and function. which property of water is most responsible for its ability to move from the root of a plant to the stem?
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cells differentiate according to the chemical environment they are immediately exposed to.
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Remote sensing data helps scientists improve their understanding and predictions about climate change.a. Trueb. False
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An ecosystem is unlikely to be limited by the supply of _____ because it is obtained from the air.
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The following is now known about biofeedback as an effective relaxation technique.People can be taught to control their physiological functions, and researchers are still uncertain why biofeedback works. t or f
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Problem: Observe the Karyotype provided and answer the following 3 questions using the chromosomal syndrome table, karyotype, your notes and readings.What patterns do you observe in this karyotype?What chromosomal difference is seen in this karyotype?Use the table to identify the chromosomal syndrome and biological sex of this individual.
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Which of the following must take place before cell division can occur? A. the replication of a cell's genetic material B. the joining together of two unique cells C. the infection of a cell by a parasite D. the removal of a cell's organelles
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