How did the eye that exists in humans and other animals appear?
a. It did not appear suddenly.
b. It possibly appeared suddenly.
c. It definitely appeared suddenly.
d. It is not known.
Ans: a. It did not appear suddenly.
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Leptin works to reduce weight gain by
a. preventing absorption of fat by the small intestine. b. suppressing the urge to eat. c. making fat less soluble. d. stimulating the conversion of fat cells into skeletal muscle cells. e. stimulating the increased production of acid in the stomach that more thoroughly breaks down fatty acids
All of the following are recommended ways to reduce the risk of developing cardiovascular disease EXCEPT which one?
A) reduce fat and cholesterol intake B) reduce or quit smoking C) engage in regular moderate exercise D) older adults — use hormone replacement therapy E) avoid chronic stress
Which of these is a characteristics of a pure command economy?
a) prices are determined by market forces b) the goods and services that a country produces are planned by consumers c) all businesses are owned by the state d) there is free and fair competition between private producers
What are CRISPRs?
What will be an ideal response?