In the 1960s, evolutionary biologists identified protein polymorphisms using ____, which allowed them to infer how
much genetic variation exists within populations.
a. genome sequencing
b. gel electrophoresis
c. artificial selection
d. polymerase chain reactions
e. DNA microarrays
ANSWER: b
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Which of the following is a possible use for gene cloning?
A. Cloned genes can be introduced into bacteria or livestock to make pharmaceutical products such as insulin. B. Cloned genes can be introduced into plants and animals to alter their traits. C. Cloned genes can be used to treat diseases. D. Large amounts of protein can be produced to study structure and function. E. All of the choices are correct.
Why have sports governing bodies banned the use of EPO in athletes?
What will be an ideal response?
Which of the following is incorrect about archaeal translation?
A. Archaeal translation uses no chaperone proteins for folding new polypeptides. B. Archaeal translation uses 70S ribosomes, similar to bacterial ribosomes. C. Archaeal translation may recognize ribosome binding sites homologous to bacterial Shine-Dalgarno sequences. D. Archaeal translation is coupled to transcription, similar to bacterial processes.
The digestive juices found in the stomach include
A. trypsin and maltase. B. insulin and bile. C. pepsin and hydrochloric acid. D. sodium bicarbonate and hydrochloric acid. E. pancreatic and salivary amylase.