The extracellular matrix contains

A. collagen.
B. cartilage.
C. smooth muscle.
D. carbohydrates.
E. both collagen and carbohydrates.


E. both collagen and carbohydrates.

Biology & Microbiology

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Which of the following is the single most important stage when regulating gene expression?

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Four of the five answers listed below are effects of acid rain. Select the exception

a. attacks marble, metals, mortar, and nylons b. causes air inversion and pollution events c. makes toxic heavy metals more mobile d. has different effects in different watersheds e. produces sterile lakes

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A characteristic that is shared by snakes and birds is ________

A) being ectothermic B) the presence of only a single ovary in females C) the amniotic egg D) being endothermic

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DNA polymerases require all of the following for DNA replication, EXCEPT ____________.

a) 3' to 5' polymerase activity b) free 3' OH c) DNA template d) primer e) dNTPs

Biology & Microbiology