Thymine dimers
A. form when DNA is exposed to carcinogens such as tobacco smoke.
B. result in abnormal protein structure which causes red blood cells to sickle.
C. are rarely removed by DNA repair enzymes.
D. form when DNA is exposed to UV radiation.
Answer: D
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Random dispersion of individuals in a
population occurs when habitat conditions are ____, resource availability is ____, and individuals or pairs of individuals ____ one another. a. random; scarce; either attract or avoid b. clumped; fairly steady; neither attract nor avoid c. nearly uniform; random; neither attract nor avoid d. nearly uniform; fairly steady; neither attract nor avoid e. clumped; scarce; either attract or avoid
Gene regulation can involve a protein repressor that blocks ________ from initiating transcription.
A. RNA polymerase B. mRNA C. rRNA D. DNA polymerase I E. DNA polymerase III
Transcription of inverted repeats produces an mRNA with complementary segments that fold to form what type of secondary structure?
What will be an ideal response?
Which plant compound is involved in systemic acquired resistance and shows potential as a drug for preventing heart disease in humans?
A. Curcumin B. Strigolactone C. Resveratrol D. Caffeine E. Epicatechin