What is the gelatinous matrix inside chloroplasts that contains ribosomes, DNA, and enzymes?
A. granum
B. chlorophyll
C. thylakoid
D. stroma
E. mitochondria
Ans: D. stroma
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The presence of a specific plasmid in a bacterial cell may be determined if the plasmid _____
A. is exceptionally large B. is an expression vector C. contains pieces of a viral genome D. contains a selectable marker
Passive transport across a membrane refers to
a. transport into the interior of a cell. b. transport out of a cell. c. transport in the energetically favorable direction. d. simple diffusion across membranes, without the help of proteins such as channels or carriers.
As a result of the transition from daytime to nighttime, how will the relative concentrations of glyceraldehyde 3-phosphate (G3P) and ribulose 1,5-bisphosphate (RuBP) change in C3 plants?
A. G3P would increase and RuBP would decrease. B. The concentrations of G3P and RuBP would remain the same. C. The concentrations of G3P and RuBP would both decrease. D. G3P would decrease and RuBP would increase.
Creutzfeldt-Jakob, Huntington, Alzheimer, and Parkinson disease are all characterized with which part of protein synthesis?
A) N-terminal modification B) protein folding C) elongation D) initiation E) termination