A red blood cell will burst when placed in which of
the following kinds of solution?
a. hypotonic
b. hypertonic
c. isotonic
d. any of these
e. none of these
Answer: a
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The responsible management (use and conservation) of the earth's resources indefinitely is called ________.
A. the maximum sustainable yield B. landscape ecology C. sustainable development D. carrying capacity
The rectal gland of sharks is involved in the excretion of:
a. urea. b. sodium chloride. c. calcium and magnesium. d. trimethyamine oxide. e. carbon dioxide.
How many chromosomes do human somatic cells contain?
a. 23 b. 46 c. 92 d. 108
Answer the following questions true (T) or false (F)
1. Double fertilization occurs within the embryo sac in the carpels of angiosperms. 2. The fruit that surrounds a seed provides the primary nourishment for the germinating embryo. 3. Although they may look different, all fruits come from one carpel and produce one seed.