Which type of species is most likely to go extinct?
a. underharvested
b. endemic
c. widely distributed
d. generalist
e. introduced
ANSWER: b
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The three-dimensional shape of a protein is determined by the ____ and the results of chemical modifications and other processing events
a. interaction of R groups b. interaction with other polypeptide chains c. amino acid sequence d. bonds formed with other proteins e. initiation complex
The following are major events in expression of a gene for insulin, which is secreted outside of certain
mammalian cells. Place these events in order, from earliest to latest. 1: binding of a release factor 2: binding of signal recognition particle (SRP) 3: binding of transcription factors 4: removal of introns 5: scanning of mRNA
a. 4?2?3?1?5 b. 1?4?3?2?5 c. 5?2?1?4?3 d. 3?4?5?2?1 e. 3?2?1?5?4
What happens when a ribosome encounters the codons UGA or UAA?
a. Translation begins b. Transcription proofreading begins c. Translation ends d. Transcription end
In incomplete dominance,
a. one allele is not dominant to another allele. b. the genotype can be determined by the phenotype. c. the heterozygote is somewhat intermediate to the two homozygotes. d. the intermediate phenotype may be the result of enzyme insufficiency. e. all of these are true.