Sometimes a prokaryotic activator protein interacts with a small molecule in the cell and undergoes a change in shape that alters its affinity for binding to DNA. This change in shape is an example of an ____ effect

Fill in the blank with the appropriate word.


Answer Key: allosteric

Biology & Microbiology

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Which of the following describes the sepal of a flower?

a. a modified leaf that encloses the bud b. a long thin structure that links the stigma to the ovary c. a thin stalk that links the anther to the flower’s base d. a sac-like structure at the tip of the stamen

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Explain why rare recessive alleles are more likely to produce a recessive phenotype as a result of inbreeding

What will be an ideal response?

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____ are known as master genes of development, and may hold clues to the field of evolutionary developmental

biology known as Evo Devo. a. Nuclear equivalent genes b. Stem cell genes c. Prokaryotic transcription factors d. Segmentation genes e. Homeobox genes

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The greatest long-distance sound communication occurs among

A) whales. B) insects. C) bats. D) birds. E) elephants.

Biology & Microbiology