Which of the following descriptors is false regarding enzymes?
A) They are proteins.
B) They function as biological catalysts.
C) They lower the activation energy required for a reaction.
D) They affect only the rate of a chemical reaction.
E) They are consumed during the reaction.
E
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The fluid link between the external and internal environment is ________
A) plasma B) cerebrospinal fluid C) interstitial fluid D) intracellular fluid
Which tissue is found lining the lumen of the esophagus and adult vagina?
A. Stratified squamous epithelium B. Simple squamous epithelium C. Urothelium D. Stratified columnar epithelium E. Pseudostratified columnar epithelium
Angiotensin II is a substance made by the body to lower blood pressure during stress
Indicate whether the statement is true or false
The pulmonary trunk splits into what structure, taking blood to the lungs?
A. Pulmonary trunk B. Pulmonary veins C. Pulmonary valve D. Pulmonary arteries