_____ are removed from new mRNA transcripts

a. Introns
b. Exons
c. Telomeres
d. Amino acids


A

Biology & Microbiology

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Which series of letters lists the first four steps of the scientific method (see question 5) in the correct order?

(a) a, b, c, d. (b) a, b, d, c. (c) c, a, b, d. (d) d, c, a, b.

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Which structure is a rod of stiffened support

tissue? a. A b. B c. C d. A and B e. none of these

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Cancer can be caused by many different factors that all alter genetic information within a set of cells and cause uncontrolled cell division to occur. Which type of gene that causes cancer can be carried in a virus?

A) mutation B) tumor-suppressor gene C) carcinoma D) oncogene

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If ATP accumulates in a cell

A) the cell receives a signal that there is a need for more energy. B) feedback inhibition speeds up cellular respiration. C) feedback inhibition slows down cellular respiration. D) the rate of cellular respiration does not change.

Biology & Microbiology