What is the function of hemoglobin?

a. to transport nutrients
b. to transport oxygen
c. to transport carbon dioxide
d. to transport oxygen and carbon dioxide
e. to transport wastes


D

Biology & Microbiology

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The nitrogenous base that is only found in RNA and not DNA is: 

A. adenine B. cytosine C. uracil D. guanine E. thymine

Biology & Microbiology

The appropriate folding of a newly translated protein is essential, and chronic misfolding often leads to disease, especially in vertebrates. This misfolding, particularly in the case of prion diseases, may be due to a defect in

A) the enzyme foldase. B) insertion of proper amino acids during translation. C) proteosome function. D) chaperone activity. E) translocase.

Biology & Microbiology

Which cells require specific antigens to become activated?

a. dendritic b. B and T cells c. macrophages d. phagocytes e. cytokines

Biology & Microbiology

Lipopolysaccharides are correctly described as

I. Found in both Gram(-) and Gram(+) bacteria II. Contains lipid A as part of its structure III. Infection of which are treated by antitoxin A. I only B. II only C. I and II only D. II and III only E. I, II, and III

Biology & Microbiology