Photosystems are mainly
a. light-trapping molecules.
b. enzymes for splitting water.
c. clusters of ATP molecules.
d. sugar assembly sites.
e. electron transport systems.
Answer: a
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Crossing over between the A and B genes in a parental cell containing an AB chromosome and an ab chromosome yields which of the following ratios of parental:recombinant gametes?
A) 100:0 B) 75:25 C) 50:50 D) 25:75 E) The ratio depends on whether the parental cell is male or female.
A single type of receptor is responsible for detecting all tactile pressure in humans.
Answer the following statement true (T) or false (F)
Regular use of antibacterial cleaning products
a. Prevents occurrence of infections. b. Is necessary for good health. c. Promotes survival of bacteria that are resistant. d. Prevents bacteria from growing. e. Prevents occurrence of infections, Is necessary for good health, and Prevents bacteria from growing
Where is chlorophyll found in a plant cell?
A) stroma B) thylakoid membranes C) cytoplasm D) cristae