Specialized outgrowths of roots that increase the efficiency of absorbing water from the soil are called
A. root hairs.
B. nodules.
C. xylem.
D. phloem.
A. root hairs.
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The group of enzymes able to relax supercoils in DNA is called
A) primases. B) helicases. C) topoisomerases. D) telomeres. E) ligases.
Estuaries receive nutrients both from tides and from streams and rivers
Indicate whether the statement is true or false
The immediate ancestors of the genus Homo belonged to the genus:a
Australopithecus. b. Pongo. c. Pan. d. Sahelanthropus. e. Ardipithecus
Which of the following is (are) proposed to be a function of telomeres?
a) They are required for the complete replication of the chromosome. b) They prevent the ends of chromosomes from fusing with one another. c) They form caps that protect the chromosomes from nucleases and other destabilizing influences. d) All of the choices are correct.