How many different types of amino acids can be used in the construction of proteins?
What will be an ideal response?
ANS:
20
Biology & Microbiology
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Which of the following is characteristic of animals?
(a) heterotrophy. (b) autotrophy. (c) photosynthesis. (d) both b and c.
Biology & Microbiology
Plant cells permit ions and small molecules to move between adjacent cells by means of cytoplasmic channels in their
cell walls known as ____.
a. gap junctions b. plasmodesmata c. desmosomes d. cell junctions e. tonoplasts
Biology & Microbiology
The hormone whose levels remain high when the
body is suffering from inflammation and stress is a. cortisol. b. somatotropin. c. thymosin. d. prolactin. e. parathyroid hormone.
Biology & Microbiology
Botox used in cosmetic medicine blocks ____
a. ATP production b. ACh release c. the ability of motor neurons to have electrical impulses d. oxygen transport e. ACh receptors
Biology & Microbiology