Normally, the xanthophylls present in the thylakoid membrane are associated mainly with photosystem II
If a mutation occurred that caused xanthophylls to be randomly distributed in the thylakoid membrane, which of the following would you predict would happen?
A. the frequency of nonspecific oxidation of
molecules in the cell would increase
B. NADPH production would increase under
conditions of intense light
C. levels of reactive oxygen species in the
thylakoid lumen would drop dramatically
D. the rate of cyclic electron transport would
increase
A
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Lipids _____
A) are insoluble in water B) are made from glycerol, fatty acids, and nitrogen C) contain less energy than proteins and carbohydrates D) are made by dehydration reactions E) contain sulfur polymers
An example of an obligatory mutualism involves which two organisms?
a. acacia trees and ant colonies b. mycorrhizae and legumes c. cattle egrets and cattle d. plants and herbivores e. tapeworms and pigs
Identify the incorrect statement from below
A. Donor (TetR) and Recipient (StrepR) grow only on those antibiotic plates to which they are resistant. B. Donor and Recipient being sensitive to Streptomycin and Tetracycline respectively will not grow on those antibiotic plates. C. Both parental strains do not grow on the double antibiotic plate as it contains one or the other antibiotic to which they are sensitive. D. There is no gene transfer of antibiotic resistance from F factor of donor to recipient. E. A bacterial lawn is also seen on plating conjugated sample on the individual antibiotic plates.
Biologists identify __________, which are larger regions characterized by their physical
characteristics as well as the species in them. Fill in the blank(s) with the appropriate word(s).