Answer the following statements true (T) or false (F)
1. Reactions that produce glucose have less entropy than those that oxidize glucose.
2. A reaction with a ?G 0 is endergonic and requires a net input of energy.
3. Enzymes are consumed in chemical reactions and must therefore be replenished.
4. Temperature, pH, and ionic concentrations play an important role in the proper functioning of enzymes.
5. Noncompetitive inhibition within a metabolic pathway prevents excess accumulation of the pathway's product. This occurs when the product binds the active site of an enzyme, reducing its activity, and the subsequent accumulation of product.
1. FALSE
2. TRUE
3. FALSE
4. TRUE
5. FALSE
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Of which materiais is cartilage composed?
A. glycoproteins and calcium phosphate B. glycoproteins and collagen fibers C. collagen fibers and osteocytes D. osteocytes and glycoproteins E. osteocytes and calcium phosphate
. Which organisms are believed to be closely related to arthropods based on molecular analysis?
a. mollusks b. annelids c. brachiopods d. nematodes
The KN-1 gene in maize is normally expressed
a. in primary meristems, where it initiates the process of differentiation. b. in apical meristems, where it maintains the undifferentiated state. c. in apical meristems, where it initiates the process of differentiation. d. in primary meristems, where it maintains the undifferentiated state. e. in lateral meristems, where it initiates the process of secondary growth.