All of the following are useful indicators of evolutionary relationships EXCEPT
a. base sequences in DNA.
b. amino acid sequences in a protein.
c. similar ecological requirements.
d. similar embryonic development.
e. similar polypeptides
C
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The result of double fertilization in an angiosperm is ____
a. two embryos b. an embryo and a megaspore c. an embryo and endosperm d. an embryo and a pollen grain e. an embryo and a female gametophyte
For glycolysis to begin, ____
a. glucose must enter the mitochondria b. there must be an input of energy from ATP c. oxygen must be available d. some hydrogen acceptors must be available e. there must be an input of energy from ADP
Arsenic is a potent poison because it causes ________
a. carbon dioxide to buildup b. enzymatic activity to stop c. ATP production to stop d. too much oxygen build up e. lactate to build up in the muscles