Which of the following forms the insoluble layer of aromatic alcohols found primarily in woody tissues?

A) hyaluronates
B) cadherins
C) proteoglycans
D) lignins
E) pectins


Answer: D

Biology & Microbiology

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Synaptic integration refers to

A. the summing of multiple excitatory or inhibitory influences in a postsynaptic neuron. B. the fusing of presynaptic and postsynaptic membranes. C. the binding of Ca2+ions to secretory vesicles in presynaptic neurons. D. the binding of secretory vesicles to the presynaptic neuron membrane. E. the enzymatic degradation of neurotransmitters in the synaptic cleft.

Biology & Microbiology

In the DNA strand above, which of the

following would be the complementary sequence?

a. ACTGAGCATTAG b. TGACTCGTAATC c. GTCAGATGCCGA d. CAGTCTACGGCT e. CTCAGACGAAGA

Biology & Microbiology

The addition of methyl groups to DNA by chemicals in tobacco can cause DNA to _____

a. replicate b. polymerize c. hybridize d. mutate e. fragment

Biology & Microbiology

What does CSA stand for?

A. Community Supported Agriculture B. Commodity Subsidized Agriculture C. Conservation Soil Association D. Concentrated Space for Animals E. Corn and Soy-based Agriculture

Biology & Microbiology