Which of the following triggers flowering for plants sensitive to photoperiod?
A) temperature
B) night length
C) day length
D) intensity of sunlight
B
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Darwin's book in which he described his views on evolution is:
A. Principles of Geology. B. Survival of the Fittest. C. On the Origin of Species. D. On the Principle of Population.
Genes that are exchanged between prokaryotes
are contained in
a. pili. b. plasmids. c. prokaryote RNA. d. the nucleus. e. capsules
In fermentation,
A. hydrogen combines with pyruvic acid. B. pyruvic acid is changed to an amino acid. C. sugar is changed to acetyl. D. pyruvic acid is converted to hydrogen.
____ is an adrenal hormone that makes kidney tubules more permeable to sodium and encourages sodium reabsorption, thus increasing water reabsorption and concentrating the urine.
A. ADH B. ANP C. Angiotensinogen D. Aldosterone E. AMP