Isotopes are unstable and dissipate radioactive energy because they _____________
A. contain additional electrons in the electron orbital
B. contain additional protons in the nucleus
C. contain additional neutrons in the nucleus
D. do not contain enough electrons in the electron orbital
E. do not contain enough protons in the nucleus
Ans: C. contain additional neutrons in the nucleus
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The type of plant hormone primarily responsible for inhibiting growth of lateral meristems on shoots and restricting
the formation of branches is/are ____.
a. abscisic acid b. cytokinins c. auxins d. salicylic acid e. gibberellins
Myelin around peripheral nerves is made by _____
a. Schwann cells c. sensory neurons b. motor neurons d. interneurons
In the figure above, the honeycomb on which
the bee is standing is made up primarily of which of the following:a. carbohydrates b. nucleotides c. proteins d. lipids e. amino acids
Resting membrane potential may be defined as
a. the difference of charge between cytoplasmic side of cell’s membrane and outer membrane side of cell. b. a positive charge. c. an action potential. d. axon generated. e. a nerve impulse.