Which of the following groups were first to

have an amniotic egg?



a. birds
b. reptiles
c. amphibians
d. bony fishes
e. mammals


B

Biology & Microbiology

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What class of neurons in the central nervous system sends commands to muscles?

A. afferent neurons B. efferent neurons C. peripheral neurons D. interneurons

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Which of the following processes does notcontribute to the formation of a biologically active form of a protein?

A. posttranslational modification of amino acids B. degradation of mRNA C. removal of one or more amino acid residues D. formation of intrachain or interchain disulfide bonds

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If an injection to the mouse contains live S strain Streptococcus pneumonia, ____

a. the mouse will die b. live R strain will be detected in the mouse's blood

c. the mouse will live d. no live S strain will be detected in the mouse's blood e. the live S strain bacteria will lose their pathogenicity

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Which of the following is an inherited disorder in which skeletal muscle fibers break down?

a. sclerosis b. dystrophy c. atrophy d. sarcoma e. tetanus

Biology & Microbiology