The streptomycetes form spores by division of the cells of the aerial mycelia in ________.
A. two division planes consecutively
B. two division planes simultaneously
C. multiple division planes
D. a single division plane
Answer: D
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Which of the following is a TRUE statement
concerning ecosystems?
a. Energy flow through an ecosystem is one way and nutrients are recycled. b. Energy and nutrients are both recycled. c. Energy flow and nutrient flow are both one way. d. Nutrient flow through an ecosystem is one way and energy is recycled. e. None of these statements is true.
One of the properties of genes is that they can "recombine." This refers to their ability to ____
A. be transmitted from parents to children B. move from one chromosome to another C. be turned on and off D. undergo changes E. break into pieces and then reassemble
Which form of DNA is a left-handed double helix?
A) A-DNA B) B-DNA C) L-DNA D) R-DNA E) Z-DNA
Intermediate hosts become infested with tapeworms through ingestion of
A) cysticerci. B) gravid proglottids. C) tapeworm eggs. D) mature tapeworms. E) tapeworm larvae.