Making a protein from mRNA is known as ____
a. translation
b. transcription
c. polymerase
d. replication
e. promoter
ANSWER: a
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When a steroid hormone and a peptide hormone exert similar effects on a population of target cells, then _____
A) the steroid and peptide hormones must use the same biochemical mechanisms B) the steroid and peptide hormones must bind to the same receptor protein C) the steroid hormones affect the synthesis of effector proteins, whereas peptide hormones activate effector proteins already present in the cell D) the steroid hormones affect the activity of certain proteins within the cell, whereas peptide hormones directly affect the processing of mRNA E) the steroid hormones affect only the release of proteins from the target cell, whereas peptide hormones affect only the synthesis of proteins that remain in the target cell
A cohort is
a. a group of individuals of the same species born during the same time interval. b. any member of the same species. c. a group of individuals with the same parents. d. a group of individuals of the same sex. e. any group of closely related individuals
James Watson and Francis Crick
a. were both English researchers working at Cambridge University. b. performed elegant experiments in DNA chemistry. c. constructed an accurate model of the DNA molecule illustrating its structural simplicity. d. performed experiments that convinced scientists that DNA is a double-stranded molecule. e. did all of these
Assume that a cross is made between AaBb and aabb plants and that the offspring fall into approximately equal numbers of the following groups: AaBb, Aabb, aaBb, aabb. These results are consistent with which of the following?
A) complete linkage B) incomplete dominance C) hemizygosity D) alternation of generations E) independent assortment