A mutated form of the CFTR gene is associated with
a. recognition proteins.
b. gap junction formation.
c. peripheral proteins in plasma membranes.
d. sinus problems.
e. passive transporters.
Answer: d
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Which of the following amino acids is not one of the 20 common amino acids found in cells?
A) leucine B) isoleucine C) glutamine D) proline E) pyrrolysine
Which of the following types of molecules are most important for a cell to protect from damage if the
cell is to stay alive and reproduce?
a. proteins b. lipids c. nucleic acids d. carbohydrates e. amino acids
The correct sequence of events in viral multiplication is
A. uncoating, penetration, synthesis, assembly, absorption, and release. B. adsorption, penetration, uncoating, synthesis, assembly, and release. C. adsorption, release, synthesis, uncoating, assembly, and penetration. D. assembly, synthesis, uncoating, release, penetration, and adsorption. E. penetration, uncoating, synthesis, adsorption, assembly, and release.
Melanin is produced in ____
a. connective tissue b. muscle tissue c. the integumentary system d. epithelial tissue e. the circulatory system