You discover a new species of plant in a tropical rain forest. You observe that it has flagellated sperm and the sporophyte emerges from the gametophyte; however, seeds and xylem tissue is lacking. This plant is probably a(n)

A) gymnosperm.
B) fern.
C) bryophyte.
D) alga.
E) angiosperm.


C

Biology & Microbiology

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In the biochemical regulation of metabolic pathways, how would one overcome the effects of a competitive inhibitor on enzyme activity?

A. Increase the amount of substrate for the enzyme. B. Increase the amount of competitive inhibitor. C. Increase the temperature of the reaction. D. Decrease the amount of enzyme. E. Add a noncompetitive inhibitor of the enzyme.

Biology & Microbiology

The growth of microorganisms in a food product is influenced by the availability of

A. moisture. B. acidity. C. nutrients. D. temperature. E. All of the choices are correct.

Biology & Microbiology

Epigenetic effects cause _____ behavior without altering _____

a. instinctive; oxytocin level b. instinctive; the genome c. conditioned; the genome d. heritable changes in; DNA sequence e. temporary changes in; RNA sequence

Biology & Microbiology

Which of the following lists of groupings or taxons is in descending order, from most inclusive to least inclusive? Some lists may be missing some of the intermediate taxons.

a) family, order, class, species, genus b) class, family, species, order, phylum c) domain, phylum, family, class, species d) phylum, class, order, genus, family e) kingdom, class, family, genus, species

Biology & Microbiology