Biology

When 5110 first appeared, the Grants did not know how to classify him. Where did he come from? Was he a new species of finch, or was he an infertile hybrid of known species? If birds prefer to mate with other birds from their own species, what would 5110's fate be on Daphne where there were no other birds like him?
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Two alleles of a given gene exist in a population: CTGT and TGTC. (Note: The codes given are only for the transcribed strand of the DNA in the two alleles.) Three possible single crossover events are possible between these two alleles. As a result of the three different crossover events, how many total new alleles (new sequences of DNA) could be produced? A. 3. B. 4. C. 5. D. 6. E. 12.
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The ____ monitors all the information about eye, head, and body positions and passes it on to brain areas that control movement. Select one: a. occipital lobe b. central sulcus c. precentral gyrus d. parietal lobe
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Which of the following statements is true? a. The right brain helps people analyze and verbalize. b. Right and left brain concepts are meaningless. c. The left brain helps people understand analogies and imagine things. d. The right brain helps people understand analogies and imagine things.
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What is one method or line of reasoning that scientists could NOT use when testing the hypothesis that dolphins and Ichthyosaurs form a monophyletic group?
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Temperate grasslands andare two biomes that are dominated by grass species, share similar wildlife, and havefew. However, while temperate grasslands havethe other grassland biomehasResetNext
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Give 3 reasons that the world's oceans so important to life on Earth.
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A researcher is comparing the sequences of genes encoding cell wall proteins in archaeons with those coding cell wall proteins in bacteria. How similar do you expect these sequences will be?
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Match the components of MSW landfill to its description.
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DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Today, instead, DDT is largely useless against many insects. What would need to be true for pest eradication efforts to have been successful in the long run?
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Im a scientific investigation the term quantitative data refers to niera that are usually followed by
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Which is the correct order of egg layer development? Group of answer choices chitin, vitelline, lipid vitelline, lipid, chitin lipid, vitelline, chitin vitelline, chitin, lipid
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What is the energy transformation taking place as a moving roller coaster slowly climbs a steep hill? Potential energy to kinetic energy Kinetic energy to potential energy Radiant energy to chemical energy Chemical energy to radiant energy
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Extend your thinking: In living organisms, the cell cycle is closely regulated. What do youthink will happen if cell division is not controlled?
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You observe two groups of frogs that are closely related. Males from each group "sing" with a species-specific song to attract a female frog. Females only respond to songs sung by males of their species. This is an example of _____ separation and _____ reproductive isolation between two species.
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What is it called when molecules move from low to high concentration across plasma membranes?
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Penicillins mode of action is to inhibit Choose one: A. cell wall cross-link formation. B. DNA replication by allosterically binding to DNA polymerase. C. translation by binding to the 50S ribosomal subunit. D. translation by binding to the 30S ribosomal subunit.
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Which of these sounds has the largest amplitude?Select one:a. a deep, loud blast from a tubab. a leaf crunching underfootc. a light tap on a drumd. a flute playing a soothing high-pitched note
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Which conditions are necessary for natural selection to occur? Select all of the answers that apply.A. Inheritable adaptations vary among individuals.B. The population size is increasing.C. More individuals are born than can survive.D. Fitness varies among individuals.E. The environment changes suddenly and drastically.
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Consider the data on cliff swallow mortality. Why is this an example of directional selection?Overall genetic variation decreased.Selection did not occur, because no reproduction occurred (just survival).Individuals with intermediate phenotypes survived best.The average trait value changed in one direction (in this case, larger size).
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What are the end products of the electron transport chain?
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How does cellular respiration help you body perform life functions?
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This is a photograph of a maritime forest on the coast of South Carolina. Notice the Spanish moss hanging from the tree branches. Spanish moss is a ___________ and the oak tree is its host. A) predator B) parasite C) producer Eliminate D) disease agent
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An 8 hour exposure to a sound intensity level of 95.0 dB may cause hearing damage. What energy in joules falls on a 0.850 cm diameter eardrum so exposed?
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