What are signaling molecules that are used by cells of the immune system to communicate with each other?
a. complement
b. neurotransmitters
c. hormones
d. cytokines
e. PAMPs
d
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Which of the following statements is correct regarding C4 plants as compared with CAM plants?
A. In C4 plants, CO2 capture and the Calvin cycle happen in different places, whereas in CAM plants CO2 capture and the Calvin cycle happen at different times. B. In C4 plants, CO2 capture and the Calvin cycle happen at different times, whereas in CAM plants CO2 capture and the Calvin cycle happen in different places. C. C4 plants produce a 4-carbon organic acid as a storage form, whereas CAM plants produce a 4-carbon inorganic acid as a storage form. D. C4 plants do not require additional ATP, whereas CAM plants do require additional ATP. E. C4 plants are found in hot sunny environments, whereas CAM plants are found in moist cool environments.
The only diploid cell of the life cycle of basidiomycetes is produced within the basidium by
A. mitosis. B. meiosis. C. karyogamy. D. ascus bursting. E. budding.
Nitrifying bacteria are important in the conversion of nitrogen gas to usable forms of nitrogen
Indicate whether the statement is true or false
Which of these is an altruistic behavior?
a. geese leaving their nests to fly south before the onset of winter b. male seahorses fertilizing eggs and carrying them until they hatch c. a gorilla living in a zoo feeding and protecting a stray kitten d. baby ducks following the first adult duck they see after hatching