A(n) ________ operon is one whose transcription is decreased by effector molecules.
A. activated
B. repressible
C. inducible
D. coinducible
E. compressible
B. repressible
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Slime molds feed by phagocytosis and are more closely related to amoebas than to fungi
Indicate whether the statement is true or false.
The best control for your experiment in the question above is a tree in which you __________ and you measure the abundance of _____________ over time. remove the ants and the aphids; other insects
A. do not remove any insects; ants B. do not remove any insects; aphids C. add a second ant species; the first ant species D. Actually, the control is built into the original experiment; you do not need to set up a separate control.
Which of the following events increases variability in a population?
a. genetic drift b. bottleneck c. stabilizing selection d. gene flow
Commercially available skin substitutes are made from ________
a. living adult donor skin b. human embryos donated through fertility clinics c. infant foreskins d. cadaver skin