Which statement represents the biological characteristics that kittens, oak trees, swans, earth worms, elephants and crickets have in common?
A. DNA nucleotides form the basis of inherited life, with cells that are formed spontaneously from the environment.
B. DNA nucleotides form the basis of all inherited life, with cells that are formed from other cells.
C. RNA nucleotides form the basis of all inherited life, with cells that are formed from other cells.
D. RNA nucleotides form the basis of inherited life, with cells that are formed spontaneously from the environment.
B
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Lack of vitamin ____ leads to rickets
a. a b. b c. c d. d e. e
Most triploid zygotes probably arise from ____
a. incomplete meiosis I b. incomplete meiosis II c. incomplete mitosis d. nondisjunction e. dispermy
In the electron transport chain, exergonic redox processes drive the endergonic reaction in which:a
pyruvate is converted to acetyl CoA. b. ATP is produced by phosphorylation of ADP. c. G3P is produced from phosphorylation of ADP. d. ADP is produced by dephosphorylation of ATP. e. glucose is produced from phosphorylation of ADP.
The breathing center in the brain is most sensitive to the
a. concentration of oxygen b. concentration of carbon dixoide in the lungs c. concentration of carbon dioxide in the blood d. amount of oxygen in the cells