What is the function of the low temperature second step in PCR (polymerase chain reaction)?
A) Activation of the DNA polymerase.
B) Allowing primers to bind complementary sequences.
C) Facilitate DNA synthesis.
D) Deactivate DNA polymerase to pause synthesis.
E) Facilitate the base pairing of deoxyribonucleotide triphosphates.
B
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Angiosperms that have only one embryonic seed leaf are called:
A. eudicots. B. gnetophytes. C. ginkos. D. monocots. E. bryophytes.
Match the term with its description.
A. Associated with the reproduction of aquatic fungi B. Method of asexual reproduction demonstrated by yeast cells C. Found at the tips of special hyphae
The seminal vesicles (“sperm vessels”) are
misnamed. Sperm are actually stored in the a. vas deferens. b. epididymis. c. prostate. d. scrotum. e. urethra.
Which of the following statements regarding thermodynamics is false?
A) Thermodynamics is the study of energy transformations that occur in a collection of matter. B) A single cell or the planet Earth could be a thermodynamic system. C) An open system exchanges both energy and matter with its surroundings. D) An automobile engine is a closed system because it does not exchange energy and matter with its surroundings.