The number of sperm cells ejaculated at one time is about:
a. 100,000–200,000
b. 300 million–500 million
c. 1 million–3 million
d. 3 million–5 million
b. 300 million–500 million
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Immature, active bone cells that produce new bone matrix are termed
A) osteocytes. B) stem cells. C) osteoblasts. D) osteoclasts. E) chondrocytes.
Identify the correct statement(s) about digestive enzymes made by the small intestine
a. They are secreted into the intestinal lumen, where they perform their function b. They act intracellularly within the brush border c. They complete the digestion of carbohydrates d. Both a and c e. Both b and c
What percentage of total oxygen (O2) is carried within red blood cells chemically bound to hemoglobin?
a. 5 percent b. 68 percent c. 98 percent d. 100 percent
The liver is primarily located in the ________ quadrant
A) right upper B) left upper C) right lower D) left lower E) hepatic