The hormone IAA helps plants to respond to and grow toward a light source by:
A) triggering release of growth factors at the tip of the stem.
B) slowing growth under low light conditions.
C) elongating cells on the opposite side of the shoot facing light.
D) increasing mitosis on the side of the shoot facing light.
Answer: C
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The diversity of microorganisms in culture collections is representative of the diversity of microorganisms found in nature
Indicate whether the statement is true or false.
Taxol is an anti-cancer drug that prevents uncontrolled cell proliferation by stabilizing microtubules, which causes arrest of the cell cycle
If dividing cells are treated with Taxol, at what stage of the cell cycle would you predict the arrest would occur? A. prophase B. metaphase C. anaphase D. telophase E. G1 of interphase
The group of bacteria that can be described as being normal inhabitants of soil and water and primarily responsible for the decomposition of plant material is:
a. Rhodococcus. b. Nocardia. c. Gordonia. d. Tsukamurella.
In all of the following characteristics, prokaryotes differ from eukaryotes except in
A. multicellularity. B. organelles. C. cell size. D. chromosomes. E. nucleic acids as the hereditary material.