The general model for animal development states: _______________ and ______________ particular genes are expressed determines how an animal body develops

Fill in the blank(s) with correct word


when; where

Biology & Microbiology

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In mammals, which of the following substances is produced in a muscle that operates anaerobically?

(A) Citrate (B) NADPH (C) Lactate (D) Oxygen

Biology & Microbiology

Cephalosporins and penicillins act on the cross-linkages in peptidoglycan. This usually results in

A) membrane breakdown. B) cell lysis. C) gram-positive cells becoming gram-negative. D) inhibition of protein synthesis.

Biology & Microbiology

The bacterial cell wall can contain ________

Fill in the blank(s) with correct word

Biology & Microbiology

Ammonium ion (NH4+) is oxidized to nitrate (NO3-) in a process known as

A. assimilation. B. anammox. C. nitrogen fixation. D. nitrification. E. denitrification.

Biology & Microbiology