In the amphibian embryo, the first cleavage bisects the gray crescent

Indicate whether the statement is true or false.


ANSWER: True

Biology & Microbiology

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Interaction of a PAMP with a TLR triggers transmembrane signal transduction and subsequent

A) clonal expansion. B) antibody production. C) complement protein activation. D) phagocytosis and inflammation.

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If the copy number of a proto-oncogene is increased by gene duplication then the proto-oncogene has undergone

A. a missense mutation. B. a nonsense mutation. C. a chromosomal translocation. D. gene amplification. E. retroviral insertion.

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A strain of bacteria containing F? factor genes is called a

A. hemizygote. B. merozygote. C. homozygote. D. heterozygote. E. monozygote.

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Fats, proteins, and complex carbohydrates are all synthesized by

A. hydrolytic reactions. B. dehydration synthesis. C. exchange reactions. D. hydrogen bonding. E. catabolic reactions.

Biology & Microbiology