What is a capsid?
a. The protein container that holds DNA or RNA
b. The cell membrane of a virus
c. The genetic material of a virus
d. None of the above.
e. Both the second and third choices are correct.
Ans: a. The protein container that holds DNA or RNA
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Genes can affect behavior by encoding proteins that
A) function as neurotransmitter transporters, neurotransmitter receptors, and enzymes that control the synthesis of neurotransmitters and myelin. B) aggregate to form synapses. C) are neurotransmitters or neuroregulators. D) alter synaptic connections when a person thinks in a certain way.
What do scientists believe was the original genetic material able to copy itself without assistance?
A. Proteins B. Carbohydrates C. DNA D. RNA
A lichen is a composite organism made up of:
a. two different fungi b. a fungus and an autotroph c. a fungus and a gymnosperm d. a fungus and an amoeba e. a fungus and a sporozoan
Hydrogen bonds
1.occur between non-polar molecules or groups. 2.are as strong as covalent bonds. 3.occur between polar molecules or groups. 4.never occur in water.