The main role of myoglobin in muscle fibers is to
a. magnify responses to neurotransmitters.
b. sequester ions.
c. synthesize ATP.
d. store oxygen.
e. enhance the strength of the power stroke.
D
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Many anaerobic Gram-negative bacteria are normally found in the duodenum.
Answer the following statement true (T) or false (F)
Plastic pollution has had serious ecological consequences in ____.v
a. river ecosystems b. the atmosphere over urban areas c. oceans d. temperate deciduous forests e. desert biomes
Helix-turn-helix and zinc fingers are secondary structural motifs in DNA and RNA, respectively.
Answer the following statement true (T) or false (F)
The differentiating mechanism between a flagellar response to a chemoattractant or a chemorepellent involves the ________ activity being low or high (respectively) on ________
a. autophosphorylation / CheA b. autophosphorylation / MCPs c. demethylation / CheA d. demethylation / MCPs