Given that most ligands form covalent bonds with their associated receptors, these complexes are more or less permanent and can only be broken through the hydrolysis of ATP.
a. true
b. false
Ans: b. false
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Some simple epithelia have one layer that appears to be several layers due to the cells' nuclei not lining
up. This type of tissue is a. stratified. b. columnar. c. cuboidal. d. squamous. e. pseudostratified.
A group of thylakoid discs make up what part of a chloroplast?
a. lumen b. stroma c. granum d. vacuole e. mesophyll layer
Which factor explains a uniform distribution of individuals in a population?
A) soil nutrients available to a species of plant B) territoriality in a species of bird C) oxygen levels in a pond, where an oxygen-dependent bacterial species lives D) food availability for humans living in a certain geographic area
Each time a molecule of glucose (C6H12O6) is completely oxidized via aerobic respiration, how many oxygen molecules (O2) are required?
A) 1 B) 2 C) 6 D) 12 E) 38