In an inflammatory response, the direct effect of histamine is to ____

a. dilate blood vessels causing increased blood flow to the area of infection
b. decrease heat accumulation in the area of infection
c. directly kill bacteria
d. attack cytotoxic T cells
e. cause B cells to release antibodies


a

Biology & Microbiology

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In an enzyme-catalyzed reaction, the reactant is called the  

A.  coenzyme B.  catalyst C.  substrate D.  product

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Answer the following statements true (T) or false (F)

1. Somatic cell mutations are heritable. 2. Mutations can produce a polypeptide with increased function. 3. The timing of a mutation during development has negligible effects on the severity of the genetic defect. 4. Larger genes are usually more likely to incur a mutation than smaller genes.

Biology & Microbiology

Which of the following is NOT a characteristic

of type 2 diabetes?

a. pancreatic islet cells are destroyed b. onset of symptoms typically begins in middle age c. obesity is a big risk factor d. diet and exercise can help control it e. all of these are characteristics of type 2 diabetes

Biology & Microbiology

In most species, all mRNA transcripts begin with _____

a. methionine b. a ribosome c. AUG d. the P site e. an anticodon

Biology & Microbiology