Though the known diversity of acetotrophic methanogens is low, they are ecologically significant in nature
Indicate whether the statement is true or false.
Answer: TRUE
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Why do plants use cotransporters instead of ion channels to transfer anions into cells?
A) Cotransporters are able to transfer anions against the membrane potential gradient, but ion channels cannot. B) Cotransporters can transfer ions across cell membranes, but ion channels cannot transport ions across cell membranes. C) Cotransporters are able to transfer anions against the proton gradient, but ion channels cannot. D) Anions are too bulky to be transported by ion channels.
Which of the following statements is false?
a. Long-day plants bloom in the summer. b. Short-day plants bloom at noon. c. Short-day plants bloom in late summer and early fall. d. Chrysanthemums and cockleburs are short-day plants. e. Day-neutral plants flower when mature enough to do so.
Compare and contrast the osmoregulatory challenges and solutions used by sharks and freshwater
fishes. What will be an ideal response?
Motor proteins require which of the following to function in the movement of chromosomes toward the poles of the mitotic spindle?
A) intact centromeres B) a microtubule-organizing center C) ATP as an energy source D) synthesis of cohesin