Choose the one most appropriate answer for each.
A. Activation energy
B. NAD+
C. Phosphorylation
D. Feedback inhibition
E. Active site
F. Allosteric enzyme
G. Enzyme
H. Adenosine triphosphate
I. Catalase
J. Entropy
A. Amount of energy to start a reaction
B. Coenzyme that can accept electrons and hydrogen
C. Attachment of a phosphate group with a high-energy bond
D. An excess of end-product molecules alters the shape of the first enzyme in the pathway and shuts off that metabolic pathway
E. Part of an enzyme that binds to the substrate
F. By binding a regulatory molecule, it allows a metabolic reaction to proceed
G. Affects rates of chemical reactions by reducing activation energy
H. Important energy currency in metabolism
I. Enzyme that participates in the neutralization of hydrogen peroxide
J. A measure of the amount of energy that has been diffused from a concentrated form of energy within a system
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You are interested in studying a receptor and decide to make a knockout mouse. However, you notice severe developmental defects that result in embryonic lethality in this receptor knockout
Which developmental process is most likely affected when you disrupt a receptor on the cell surface, disrupting its ability to receive a signal and initiate a transduction pathway? A) Cell proliferation B) Cell-cell interactions C) Cell differentiation D) Cell movement E) Apoptosis
Which of the following describes reinforcement of reproductive isolation?
A. The physical separation of two populations with diverging characteristics B. The reduced fitness of hybrid offspring C. The ability to identify and preferentially mate with only members of the same population D. An outbreak of disease that wipes out one of the two populations that would otherwise mate and form hybrid offspring
External fertilization is common in most _____
a. insects b. amniotes c. lizards d. bony fish e. hydra
Refer to Figure 31-1. Which of the following structures are feeding polyps?
A. 1. B. 4. C. 6. D. 7. E. 9.