An important characteristic of the double-stranded DNA molecule is that ___________.
A. DNA is composed of amino acids linked together by peptide bonds that form a double helix.
B. DNA contains four nucleotides: cytosine, uracil, adenine, and guanine.
C. Phosphodiester bonds are formed between bases in opposing DNA strands to form a double helix.
D. Hydrogen bonding between base pairs is responsible for formation of a double helix.
D. Hydrogen bonding between base pairs is responsible for formation of a double helix.
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What is the name of the neurotransmitter used at a skeletal neuromuscular junction?
A. Norepinephrine B. Calmodulin C. Acetylcholinesterase D. Acetylcholine
As the human body grows to trillions of cells, DNA replication occurs about how many times?
A) one billion. B) three trillion. C) 100 trillion. D) 100 quadrillion.
The homeostatic maintenance and remodeling of bone structure depends on the balanced activity of ________.
Fill in the blank(s) with the appropriate word(s).
How many DNA molecules are in a somatic cell of the snail in G2 phase?
A) 4 B) 8 C) 16 D) too many to count