Peptide hormones

A. bind to receptors in the cytoplasm of a target cell.

B. bind to receptors that extend from the plasma membrane of the target cell.

C. are typically water-soluble and bind to a receptor in the cytoplasm of a target cell.

D. are typically water-soluble and bind to receptors that extend from the plasma membrane of the target cell.

E. are typically lipid-soluble and bind to a receptor in the cytoplasm of a target cell.


D. are typically water-soluble and bind to receptors that extend from the plasma membrane of the target cell.

Biology & Microbiology

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Fill in the blank with the appropriate word.

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Metagenomics offers a DNA-based method to understand

A. the history of species diversity. B. the time hypothesis. C. microbial diversity. D. the organismic model of Clements. E. the Shannon Diversity Index.

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A ddNTP, used often in DNA sequencing, lacks a(n) ________ at the ________ and ________ carbons

A) methyl; 2'; 3' B) carboxyl; 5'; 3' C) OH; 2'; 3' D) OH; 2'; 5' E) None of the listed answers is correct.

Biology & Microbiology

The amphibians are believed to have arisen from ancestral:a

chondrichthyean fishes. b. actinopterygian fishes. c. reptiles. d. sacropterygian fishes. e. amphibians.

Biology & Microbiology