How many chromosomes are contained within a human zygote?
A) 8
B) 23
C) 32
D) 46
E) 64
Answer: D
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The head of the humerus and the glenoid cavity form a ball-and-socket joint.
Answer the following statement true (T) or false (F)
The acromion is an anatomical feature of the __________.
A. clavicle B. scapula C. ulna D. scaphoid E. pollex
If carbon dioxide levels rise in the body, negative feedback mechanisms will trigger
A. an increase in breathing so that carbon dioxide levels decline to the set point. B. a decrease in breathing so that carbon dioxide levels decline below set point. C. a decrease in breathing so that carbon dioxide levels rise to the set point. D. an increase in breathing so that carbon dioxide levels rise further above set point.
A membrane that allows only certain molecules to pass through it is called ________.
A. permeable B. countertransport C. selectively permeable D. porous