Long-term exposure to cold can alter metabolism and encourage __________ in which brown adipose

tissue produces heat. Fill in the blank(s) with the appropriate word(s).


nonshivering heat production

Biology & Microbiology

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Pain relievers such as endorphins and enkephalins

are a. depressants. b. stimulants. c. analgesics. d. hallucinogens. e. antipsychotics.

Biology & Microbiology

Evidence exists that atmospheric CO2 has increased over the last several decades, due to human activities. How could increased CO2 levels affect the pH of Earth's waters?

a. Due to the formation of carbonic acid, increased CO2 levels will increase the pH of Earth's waters. b. Due to the formation of carbonic acid, increased CO2 levels will decrease the pH of Earth's waters. c. Due to the formation of carbonic acid, increased CO2 levels will cause Earth's waters to become neutral. d. It will not affect the pH of Earth's waters, as atmospheric CO2 is not located in oceans.

Biology & Microbiology

The divisions of the nervous system that have antagonistic, or opposing, actions are _____

A) motor and sensory systems B) sympathetic and parasympathetic systems C) presynaptic and postsynaptic membranes D) central nervous system and peripheral nervous system

Biology & Microbiology

While peering through the microscope, a classmate of yours said, "I know that this thing is supposed to be a ciliate, a flagellate, or an amoeba, but I can't figure out which." You replied, "That's easy, ________."

A. watch how it moves B. all you have to do is see whether it has a nucleus C. watch and see what it eats D. see how big it is

Biology & Microbiology