the molecule that stores the energy of glucose in plants
What will be an ideal response?
starch
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In mammals, females have two copies of the X chromosome, whereas males have only one copy. Dosage compensation is accomplished in mammals by:
A. females inactivating the X chromosome from the mother in all the cells. B. males inactivating the X chromosome from the father in all the cells. C. females expressing the X-encoded genes at 2 times the level of the male. D. males expressing the X-encoded genes at half the level of the female. E. females possessing a randomly inactivated X chromosome in all cells.
Which of the following statements is TRUE?
A. The leading strand is replicated continuously for the entire length of the chromosome, e.g. while the lagging strand has multiple origins of replication. B. The lagging strand is synthesized in a semiconservative fashion while the leading strand is synthesized in a conservative fashion. C. Synthesis of the lagging strand requires more DNA helicase enzymes than synthesis of the leading strand. D. The lagging strand has a higher mutation rate than the leading strand. E. None of these are true
Erica is taking birth control pills that have high levels of estrogen. Which of the following is
true about estrogen?
a. Having high levels of estrogen is a risk factor associated with breast cancer. b. Estrogen moves into the DNA to signal cell division. c. The production of estrogen decreases when females reach puberty. d. All of these are true.
Boiling water for 10 minutes is effective in ridding it of
A) actively growing bacteria. B) enveloped viruses. C) bacterial endospores. D) protozoan cysts. E) both growing bacteria and enveloped viruses.