What might be a reason for the accumulation of improperly folded protein complexes in the bacterial cell cytoplasm following translation?
A. The cell is synthesizing proteins too rapidly.
B. Polysomes are forming on the mRNA.
C. A problem exists with the functioning of molecular chaperones.
D. The proteins are being transcribed but not translated.
Answer: C
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If a region of DNA contained numerous mismatches due to a modifying agent that caused methylation of guanine, which of the following mutagens is most likely the cause?
A. Ionizing energy such as gamma radiation B. An intercalating agent such as acridine orange C. A DNA modifier such as an alkylating agent D. A deaminating base such as nitrous oxide
How is the NO pathway manipulated by Viagra to treat erectile dysfunction?
a. NO synthesis is decreased b. NO synthesis is increased c. the enzyme catalyzed by NO is stabilized d. the enzyme catalyzed by NO is inhibited e. the breakdown of cGMP is inhibited
A newly hatched cuckoo bird is blind, but contact with an object beside it stimulates it to push the object out of the nest. What term best describes this behavior?
a. learned b. time sensitive learning c. imprinting d. instinct e. social landscape learning
In areas where malaria is endemic, sickle cell disease heterozygote carriers are less fit than individuals
homozygous for the normal allele. Indicate whether the statement is true or false.