Which chemical condition describes the electrons in a water molecule being shared unequally between the hydrogen and oxygen atoms?
A) hydrophobic
B) ionic
C) noncovalent
D) polar
D
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Many metabolic pathways are ultimately concerned with ATP; either with the generation of ATP, or with the requirement of ATP for that pathway to function. Why is ATP so important to metabolism?
A. Hydrolysis of ATP is used to drive exergonic reactions B. Hydrolysis of the bond between adenine and ribose in ATP is commonly used to release energy that can be used to drive other cellular reactions C. The phosphate groups of ATP are held together by unstable bonds that can be broken to release energy D. ATP is a protein that serves as the energy currency of cells
Fecundity is ____
a. a summary of the demographic characteristics of a population b. a group of individuals of similar age c. the average number of offspring produced d. the proportion of individuals alive at the start of an interval that die during that interval e. the proportion of individuals alive at the start of an interval that survive to the start of the next interval
During which developmental stage is the human body plan set and organ formation occurs?
a. zygote b. blastocyst c. embryo d. fetus e. infant
Which of the following BEST explains the role of enzymes in a reaction
a. An enzyme causes an increase in the rate of reaction by binding to a substrate. b. An enzyme increases the amount of energy needed to complete the reaction. c. An enzyme binds to a product causing a decrease in the rate of the reaction. d. An enzyme increases the temperature of a reaction so that the reaction can occur faster.