The toxin of Vibrio cholerae causes severe diarrhea because it ____
a. modifies DAG and activates a cascade of protein kinases
b. activates phospholipase to produce inositol triphosphate
c. decreases the cytosolic concentration of Ca++
d. modifies a G protein involved in regulating salt and water secretion
e. binds with adenylyl cyclase and triggers formation of cAMP
D
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Which of the following is a flaplike structure
that helps prevent food from entering the windpipe?
a. uvula b. pharynx c. larynx d. epiglottis e. esophagus
What protein makes up a thick myofilament?
A) T tubules
B) Muscle twitch
C) Testosterone
D) Myosin
Stress, relaxation, hunger, consuming the wrong foods, and too much or too little sleep can contribute to which of the following?
A) stroke B) coma C) headache D) spinal cord injury
Choose the letter of the best match from the following:A. protodermB. vascular cambiumC. apical meristemD. procambiumE. ground meristemLateral meristem that contributes to the increase in thickness of a stem or root.
Fill in the blank(s) with the appropriate word(s).