Which one of the following would not be found in an mRNA molecule?
a. the promoter
b. the protein coding region
c. the 3' untranslated region
d. the translation start and stop codons
Ans: a. the promoter
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In bacterial synthesis of polysaccharides, such as starch and glycogen, glucose is donated to the end of the growing chain by ADP-glucose. A similar reaction occurs in bacterial branching of phospholipids when phosphatidic acid is attached to a ________.
A. dihydroxyacetone phosphate B. fatty acyl-ATP C. acetyl-CoA D. cytidine diphosphate carrier
Four of the five viruses listed below are enveloped in
membrane from the host cell. Select the exception. a. adenoviruses b. influenzaviruses c. herpesviruses d. smallpox virus e. virus that causes AIDS
The type of bond illustrated in Figure 2-2 is:
a. an ionic bond.
b. a polar bond.
c. a single covalent bond.
d. a hydrogen bond.
e. a double covalent bond.
What compound is found at the reaction center of a photosystem?
A) chlorophyll b B) carotenoids C) phycobilins D) chlorophyll a