Multiple Choice Quiz


1	_____ is another term for biosynthesis.
		A)	catabolism
		B)	anabolism
		C)	metabolism
		D)	catalyst


2	Catabolism is a form of metabolism in which _________ molecules are converted into __________ molecules.
		A)	large, small
		B)	small, large
		C)	amino acid, protein
		D)	food, storage


3	An enzyme _______ the activation energy required for a chemical reaction.
		A)	increases
		B)	converts
		C)	lowers
		D)	catalyzes


4	An enzyme
		A)	becomes part of the final products
		B)	is nonspecific for substrate
		C)	is consumed by the reaction
		D)	is heat and pH labile


5	An apoenzyme is where the _________ is located
		A)	cofactor
		B)	coenzyme
		C)	redox reaction
		D)	active site


6	Many coenzymes are
		A)	metals
		B)	vitamins
		C)	proteins
		D)	substrates


7	To digest cellulose in its environment, a fungus produces a/an
		A)	endoenzyme
		B)	exoenzyme
		C)	catalase
		D)	polymerase


8	In negative feedback control of enzymes, a build-up in the amount of _____ decreases the activity in the enzyme.
		A)	substrate
		B)	reactant
		C)	product
		D)	ATP


9	Energy in biological systems is primarily
		A)	electrical
		B)	chemical
		C)	radiant
		D)	mechanical


10	Energy is carried from catabolic to anabolic reactions in the form of __________.
		A)	ADP
		B)	high-energy ATP bonds
		C)	coenzymes
		D)	inorganic phosphate


11	Exergonic reactions
		A)	release potential energy
		B)	consume energy
		C)	form bonds
		D)	occur only outside the cell


12	A reduced compound is
		A)	NAD
		B)	FAD
		C)	NADH
		D)	ADP


13	Most oxidation reactions in microbial bioenergetics involve the
		A)	removal of electrons and hydrogens
		B)	addition of electrons and hydrogens
		C)	addition of oxygen
		D)	removal of oxygen


14	Products of glycolysis are
		A)	ATP
		B)	H2O
		C)	CO2
		D)	both a and b


15	Fermentation of a glucose molecule gives off a net number of ATPs.
		A)	4
		B)	2
		C)	40
		D)	0


16	Complete oxidation of glucose in aerobic respiration yields a net output of ATP.
		A)	40
		B)	6
		C)	38
		D)	2


17	The compound that enters the TCA cycle from glycolysis is
		A)	citric acid
		B)	oxaloacetic acid
		C)	pyruvic acid
		D)	acetyl coenzyme A


18	The FADH2 formed during the TCA cycle enters the electron transport system at which site?
		A)	NADH dehydrogenase
		B)	cytochrome
		C)	coenzyme Q
		D)	ATP synthase


19	ATP synthase complexes can generate _______ATP(s) for each NADH that enters electron transport.
		A)	1
		B)	2
		C)	3
		D)	4

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