When cultured normal human cells were infected with a virus that carried the genes that coded for a

subunit of telomerase:a.
the cells underwent more cell divisions than normal.
b. the cells underwent fewer cell divisions than normal.
c. the cells died almost immediately.
d. the cells underwent gene expression more vigorously.
e. the cell cycle shortened.


A

Biology & Microbiology

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List three hypotheses that explain why selection would favor large brains in early humans. ____

Fill in the blank with the appropriate word.

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________ is the inner most germ cell layer that forms during gastrulation.

A. Ectoderm B. Mesoderm C. Endoderm D. Mesentery E. Epidermis

Biology & Microbiology

If you were presented with a tissue sample that contained long rows of cells surrounded by parallel

bundles of collagen and elastin fibers, that tissue would most likely be

a. bone tissue. b. fibrous connective tissue. c. cartilage. d. blood. e. adipose tissue.

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The system of binomial nomenclature was devised by

A. Charles Darwin. B. Charles Lyell. C. Aristotle. D. Carolus Linnaeus.

Biology & Microbiology