Explain why it takes energy to create starch from glucose, but it does not take energy to create glucose from starch. In your explanation, describe the law of thermodynamics that explains this, and describe how
What will be an ideal response?
Creating starch requires energy because it involves adding more order to the system, thereby decreasing entropy. By the second law of thermodynamics, to decrease entropy requires energy.
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. One of the advantages of PCR is the ability to ____
a. sequence DNA b. transcribe DNA into mRNA transcripts c. make millions of copies of the entire genome d. double the amount of a rare DNA sequence e. make millions of copies of a rare DNA sequence
Reproductive isolating mechanisms are
a. specific behaviors that allow males to compete against other males for females. b. the processes by which sexual selection evolves within a population. c. the ways that gene flow is blocked between populations. d. the ways in which individuals within a species are unable to produce fertile offspring. e. the various geographic barriers to immigration and emigration of individuals between populations.
Which of the following is caused by a virus?
a. pernicious anemia b. sickle cell anemia c. infectious mononucleosis d. hemolytic anemia e. iron-deficiency anemia
When does fertilization occur in flowering plants?
A) Pollen grains land on the anthers of the female flower parts. B) The female carpels and male anthers are united. C) Sperm join with eggs inside the ovules. D) Pollen joins with eggs inside the stigma.