The only electrolyte that exerts significant osmotic pressure is the ______.
A. chloride ion
B. potassium ion
C. calcium ion
D. sodium ion
Answer: D. sodium ion
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Which of the following consists of a set of flattened membranous disks?
A) rough ER B) smooth ER C) mitochondria D) nucleoli E) Golgi apparatus
If the structure of a fibrous joint makes it highly stable, what is likely regarding its mobility?
A. It will have a low degree of mobility. B. It will have a high degree of mobility.
The average glomerular filtration rate is equal to ________.
A. 8 mg/hour B. 180 L/day C. 5.5 L/min D. 100 mmHg/hour
Slow oxidative/Type I muscle fibers would be the predominant fiber recruited during a marathon run because ________.
A. the rate of twitch is faster in Type I than Type II muscle fibers, which will lead to better race performance B. the greater number of mitochondria present in Type I muscle fiber would provide sustained amounts of ATP for muscle contraction C. the increased concentration of myosin ATPase would allow for faster hydrolysis of ATP than Type II muscle fibers D. the small diameter of the muscles would allow someone to perform work for a longer period of time without fatigue