The accompanying figures are representative of which of the following?
a. Anthophyta
b. Gnetophyta
c. Ginkophyta
d. Cycadophyta
e. Coniferophyta
e
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The term N-terminus refers to the presence of a(n) ________ at the 5? end of a polypeptide.
A. oxygen atom B. carboxyl group C. amino group D. carbonyl group E. sulfate group
A gametophyte that develops from a ____ spore is bisexual, meaning that it can produce both sperm and eggs
a. homosporous b. polysporous c. heterosporous d. diplosporous e. bisporous
A molecule that binds noncovalently to an enzyme at the active site and thereby prevents a substrate from binding and reacting is a(n) ________ inhibitor.
Fill in the blank(s) with the appropriate word(s).
Natural selection acts most directly on:
a. populations. b. communities. c. ecosystems. d. the biosphere. e. K-selected organisms