Which of the following hormones are not matched with the proper function?

A. gibberellic acid: mobilizes seed resources
for the developing embryo
B. auxin: stimulates stem elongation
C. cytokinins: stimulates cell division
D. ethylene: inhibits fruit ripening
E. abscisic acid: maintains seed dormancy


D

Biology & Microbiology

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The acetylcholine receptor is

A. a ligand-gated ion channel that produces depolarization by allowing Na+ ions to enter the muscle fiber. B. a ligand-gated ion channel that produces hyperpolarization by allowing Na+ ions to enter the muscle fiber. C. a ligand-gated ion channel that produces depolarization by allowing Cl- ions to enter the muscle fiber. D. a ligand-gated ion channel that produces depolarization by allowing K+ ions to leave the muscle fiber. E. a metabotropic receptor that stimulates muscle activity by activating second messenger systems within the muscle fiber.

Biology & Microbiology

Humans belong to the phylum ________.

A. chordates B. echinoderms C. arthropods D. mollusks

Biology & Microbiology

Which ovarian hormone is at its highest concentration after ovulation?

a. GnRH b. estrogen c. progesterone d. FSH e. LH

Biology & Microbiology

Explain the importance of decomposition in an ecosystem. Cite an application of this process for human systems

What will be an ideal response?

Biology & Microbiology