ATP acts as what type of agent in almost all metabolic pathways?
a. energy transfer
b. feedback
c. catalytic
d. synthetic
e. enzymatic
A
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Which of the following is a characteristic shared by DNA and RNA polymerases?
A) efficiency of proofreading B) type of nucleotides used C) direction of polymerization D) speed E) dependence on helicase
Marbles is a calico cat with a Manx tail. She wants to have kittens with a male calico, but can't find one. Male calicos are rare; the only ones have the sex chromosome constitution XXY. Male calicos are therefore rare because
A) all male cats have a dominant gene on the Y chromosome that masks the calico gene on the X chromosome. B) most male cats only have one Y chromosome, so it cannot be shut off. C) most male cats have only one X chromosome, so it cannot be shut off. D) male calico cats lack sex chromosomes.
Nematocysts in cnidarians are:
a. reproductive cells b. excretory organs c. sets of muscle cells d. circulatory cells e. defensive cells
Why do eukaryotic cells have to undergo the individual steps of mitosis while prokaryotic cells can merely pull in half by binary fission?
What will be an ideal response?