It can be very difficult to select an angle for sneaking up to a grasshopper to catch it because grasshoppers have _____

A) excellent hearing for detecting predators
B) compound eyes with multiple ommatidia
C) eyes with multiple fovea
D) a camera-like eye with multiple fovea
E) binocular vision


Answer: B

Biology & Microbiology

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Which of the following contributes to the extensive variability of immunoglobin genes?

A. The genes for the light-chain variable regions undergo rearrangement in germ-line cells. B. RNA transcripts from the recombinant genes undergo splicing that further changes the combinations in the final protein chains. C. The light chains generated by rearrangement and splicing can combine with the numerous heavy chains that have also undergone rearrangement and splicing. This results in even more variability in the final assembled antibody. D. The genes for the heavy-chain variable regions undergo rearrangement in germ-line cells. E. All of the choices given are correct.

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How do corallivores keep certain corals from being overgrown? a. None of these choices

b. Moves sediment towards slow growing corals. c. Prevent larval corals to settle in certain areas. d. Feed on fast-growing, branching corals.

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What produces four daughter cells?

A) Meiosis B) Mitosis C) Both of these D) Neither of these

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To repress transcription, corepressors bind to ________, and inducers bind to ________ proteins

a. repressor proteins / inducer b. repressor proteins / repressor c. RNA polymerase / inducer d. RNA polymerase / repressor

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