Most membrane functions are performed by _____
a. proteins c. nucleic acids
b. phospholipids d. hormones
A
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A new experimental pesticide is being tested by a large agricultural chemical company. An unfortunate side effect in plants treated with this new product is a decrease in NADPH production in the chloroplasts
(Interestingly, reduction of NAD+ to NADH in the mitochondria is unaffected.) Given this observation, which of the following would you expect to observe in the chloroplasts of these plants? A. an increase in 3-phosphoglycerate levels and a decrease in RuBP production B. a decrease in 3-phosphoglycerate levels and an increase in RuBP C. an increase in glyceraldehyde-3- phosphate production D. an increase in 3-phosphoglycerate production and an increase in RuBP
The step of DNA replication in which two replication forks moving in opposite directions may meet is called
A) initiation. B) elongation. C) termination. D) translation. E) translocation.
Which are the components of an ATP molecule?
A. ribose, 3 phosphates, 1 adenine B. glucose, 3 phosphates, 1 guanine C. deoxyribose, 3 phosphates, 1 guanine D. deoxyribose, ribose, 1 cytosine E. ribose, 2 phosphates, 1 thymine
If a gene is found in different groups, it is said to be
A. variable. B. active. C. conserved. D. associational. E. endogenous.