Gluconeogenesis is primarily used for biosynthesis of
a. cell walls.
b. fatty acids.
c. purines and pyrimidines.
d. proteins.
Answer: A
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A researcher wants to introduce the human gene encoding tissue plasminogen activator (used to dissolve blood clots) into a mammal so that the protein will be secreted into the milk of the mammary gland. What is required for the researcher's success?
A. The gene should be placed a considerable distance away from the promoter of a gene that is expressed in mammary cells. B. The gene should be placed next to the promoter of a gene that is expressed in mammary cells. C. The gene should be placed a considerable distance away from the promoter of a gene that is expressed in multiple types of cells. D. The gene should be placed next to the promoter of a gene that is expressed in multiple types of cells. E. The gene should be inserted in place of the promoter of a gene that is expressed in multiple types of cells.
Which of the following tissue types is characterized by having cells suspended within an extracellular matrix consisting of a mixture of fibrous proteins and carbohydrates?
A. nervous B. muscular C. epithelial D. connective E. digestive
Rubbery cartilage, calcium-hardened bone tissue, lipid-storing adipose tissue, and blood are examples of specialized
____________________ tissues. Fill in the blank(s) with the appropriate word(s).
Nonpathogenic Vibrio cholerae can acquire the cholera toxin gene by
A) phagocytosis. B) transduction. C) conjugation. D) transformation. E) infecting a pathogenic Vibrio cholerae.