The original published articles describing the structure of DNA were authored by _____ and _____
a. Crick; Franklin
b. Watson and Crick; Franklin
c. Wilkins; Franklin
d. Wilkins; Watson and Crick
e. Watson; Crick
ANSWER: b
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While studying eukaryotic mRNA processing, you encounter the sequence GUACACACAUGAG in the middle of a long mRNA transcript. Which statement can you make, based on your discovery?
a. This sequence will be replaced by a poly-A tail. b. This transcript will be assembled into a ribosome. c. This transcript has not yet undergone splicing. d. This is a transcript for Asparagine tRNA.
Explain why chloroplasts and mitochondria both have a sac-within-a-sac structure
What will be an ideal response?
Once DNA is separated on a gel, it is often desirable to gain some idea of its informational content. How might this be done?
What will be an ideal response?
Which of the following statements about viral spikes is FALSE?
A) They are composed of carbohydrate-protein complexes. B) They are used for attachment. C) They may cause hemagglutination. D) They bind to receptors on the host cell surface. E) They are found only on nonenveloped viruses.