Microorganisms characterized by the absence of a nucleus are called
A) fungi.
B) pathogens.
C) eukaryotes.
D) prokaryotes.
E) viruses.
D
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Most human embryos that are aneuploid
A. result in Down's syndrome. B. result in sterility. C. are spontaneously aborted in the first trimester. D. can develop and survive to adulthood. E. are usually the result of increased nondisjunction in the gametes of older men.
The lateral line is part of the system to
a. process light. b. sense electrical currents in the water. c. control balance. d. detect vibrations. e. detect dissolved substances.
What is the specific site of blood cell formation?
a. heart b. blood vessel walls c. red bone marrow d. compact bone e. yellow bone marrow
The mycoplasmas have been successively classified as viruses, Gram-negative bacteria, and Gram-positive bacteria largely due to the lack of cell (membranes/walls/RNA) in their structure
What will be an ideal response?