A relationship between two organisms in which both members benefit is said to be
(a) parasitic.
(b) saprotrophic.
(c) mutualistic.
(d) heterotrophic.
(c) mutualistic.
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The situation in which an active regulatory protein "turns on" gene expression is an example of
A) feedback inhibition. B) positive control. C) negative control. D) constitutive gene elements. E) a mutation.
Which substance would be unlikely to function as a coenzyme?
a. a water-soluble vitamin b. an iron ion c. glucose d. NAD+ e. a magnesium ion
Diffusion is slow over distances of a few millimeters, making diffusion an unsuitable mechanism for
large animals to exchange oxygen and carbon dioxide between the external environment and body tissues and cells.
Indicate whether the statement is true or false.How does modern day sequencing detect dyes on the nucleotides?
A. dye terminator chemicals B. DNA breakage C. radioactivity D. laser E. by eye