Examples of shapes in regulatory proteins that are used to bind to DNA include  

_____ zinc finger.
_____ TATA box.
_____ helix-turn-helix.
_____ leucine zipper.
_____ Doubledomain.


__X__ zinc finger.
_____ TATA box.
__X__ helix-turn-helix.
__X__ leucine zipper.
_____ Doubledomain.

Biology & Microbiology

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Which of the following is a neurotransmitter that triggers a contraction of a voluntary muscle?

A) synapse B) action potential C) sodium D) acetylcholine

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Mammals evolved from which group in the late Triassic period?

a. diapsids b. pelycosaurs c. therapsids d. anapsids

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In contrast to most other plant hormones, which hormone is a germination inhibitor?

a. auxin b. gibberellin c. cytokinin d. abscisic acid e. ethylene

Biology & Microbiology

________________ is defined as an organism's expressed physical traits.

a) Phenotype b) Genotype c) Heritable trait d) None of the above

Biology & Microbiology