The basic tool of genetic regulation is the ability of certain proteins to bind to specific
A. regulatory DNA sequences.
B. promoter parts of the gene.
C. enzymes of the cell.
D. repressor parts of the gene.
E. regulatory RNA sequences.
Answer: A
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Which of the following characteristics do fungi share with plants?
a. Their cell walls both use cellulose to keep their structure. b. They both have chloroplasts. c. Their cells both have cell walls. d. Their plasma membranes are both stabilized by ergosterol.
A population is composed of individuals of ____
a. the same species b. interacting species of different kinds c. interacting species and nonliving things d. a single species interacting with nonliving things e. all species found in a given area
Which male reproductive structure is “snipped” during a vasectomy?
1.epididymis
2.vas deferens
3.seminal vesicle
4.urethra
What does light absorption trigger during phototaxis?
a. rapid changes in the concentrations of ions, including potassium and oxygen b. rapid changes in the concentrations of ions, including sodium and oxygen c. rapid changes in the concentrations of ions, including sodium and calcium d. rapid changes in the concentrations of ions, including potassium and calcium