BSCS Biology: A Molecular Approach

Chapter 4: Autotrophy: Collecting Energy from the Nonliving Environment

Photosynthesis and the Environment

Your Results:

The correct answer for each question is indicated by a .

1.			A decline in photosynthesis, caused by damaging molecules produced by a saturation of light energy, is known as what? Need a Hint?
			A)	materialism
			B)	respiration
			C)	photoreduction
			D)	photoinhibition
2.			The graph shows that as temperature increases, the rate of photosynthesis does what? <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078664276/281029/ccq_u1_ch4_q2.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a> Need a Hint?
			A)	declines steadily
			B)	increases, then declines
			C)	increases with the temperature
			D)	gets hotter, then cooler
3.			What effect does photorespiration have on photosynthesis? Need a Hint?
			A)	it speeds it up
			B)	it has no effect
			C)	it slows it down
			D)	it can speed it up or slow it down, depending on the barometric pressure
4.			What is CAM? Need a Hint?
			A)	part of the Calvin cycle
			B)	a chemical that inhibits photosynthesis
			C)	a byproduct of cellular respiration
			D)	an adaptation of photosynthesis in desert plants
5.			Why do scientists think that C3 plants are showing increased growth in many parts of the world? Need a Hint?
			A)	They can survive better at high temperatures.
			B)	They use less energy.
			C)	Increased levels of carbon dioxide in the atmosphere favor their growth.
			D)	They use CAM exclusively.

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