Which of the above letters represents the brain
or controlling system of nerve reactions in this
organism?
a. A
b. B
c. C
d. D
e. none of these
E
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Which of the following factors has delayed the development of laboratory-based genetic systems in Archaea?
A) There are no documented systems of conjugation in Archaea. B) Homologous recombination does NOT occur in Archaea. C) Archaea do NOT host viruses or plasmids. D) Many archaea grow in extreme or unusual conditions that make the use of agar and traditional mutant screening techniques problematic.
The covalent bond between a hydrogen atom and the oxygen atom in water is formed when:a
hydrogen gains an electron from oxygen. b. hydrogen and oxygen share an electron pair. c. hydrogen and oxygen both lose electrons from their outer shells. d. hydrogen and oxygen both gain electrons in their outer shells. e. hydrogen gains an electron from oxygen.
The interstitial cells of the testes produce
A) LH. B) testosterone. C) FSH. D) alkaline mucus. E) sperm.
Structure across a dividing plant cell that signals the location of new plasma membranes and cell walls.
What will be an ideal response?