The primary difference between the amino acids commonly found in proteins is in their:a
R or variable groups.
b. number of potassium groups.
c. number of phosphate groups.
d. number of carbonyl groups.
e. number of asymmetric carbons.
a
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The mouse is a particularly useful model for studying human disease because _____
a. mice and humans are 100% genetically identical b. all mice are in essence, clones c. mice do not feel pain and discomfort d. mice and humans are the only species whose genomes have been sequenced e. approximately 90% of human disease-associated genes are present in the mouse genome
Cutaneous mycoses are called ________.
A. tineas B. dermatomycoses C. ringworms D. All of the choices are correct.
On Long Island, New York, a population of wall lizards that originated from a group in Italy is present. Several had been imported to be sold as pets many decades ago, and some escaped and started a new population in this suburban area
What concept applies to this situation? A) genetic drift B) the founder effect C) a population bottleneck D) gene flow
You engineer yeast cells that express the M cyclin during S phase by replacing the promoter sequence of the M cyclin gene with that of S cyclin
Keeping in mind that yeast cells have one common Cdk that binds to all cyclins, which of the following outcomes is least likely during this experiment? (a) There will be both M cyclin–Cdk and S cyclin–Cdk complexes in the cell during S phase. (b) Some substrates that are normally phosphorylated in M phase will now be phosphorylated in S phase. (c) G1 cyclins will be expressed during S phase. (d) S-Cdk targets will be phosphorylated during S phase.