Catabolic pathways _____
A) combine molecules into more energy-rich molecules
B) supply energy, primarily in the form of ATP, for the cell's work
C) are endergonic
D) are spontaneous and do not need enzyme catalysis
E) build up complex molecules such as protein from simpler compounds
Answer: B
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Humans are an example of
a. bulk feeders. b. deposit feeders. c. fluid feeders. d. suspension feeders. e. bulk and fluid feeders.
"Rapture of the deep" is characterized by ____
a. increased O2 in the blood b. altitude sickness c. excess CO2 in the blood d. excess CO in the blood e. euphoria
Glucose and fructose are different
a. in the number of carbons they possess. b. in their proportion in sucrose molecules. c. in the way that their atoms are arranged. d. in the number of double bonds they possess. e. both in the way that their atoms are arranged and in the number of double bonds they possess.
In the formation of biofilms, such as those forming on unbrushed teeth, cell signaling serves which function?
A) formation of mating complexes B) aggregation of bacteria that can cause cavities C) secretion of substances that inhibit foreign bacteria D) digestion of unwanted parasite populations