Meiosis results in __________ in the male and __________ in the female
A) four sperm; one ovum
B) one sperm; four ova
C) millions of sperm; about 40,000 ova
D) four sperm; millions of ova
Answer: A
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Selection bias is a threat to external validity
a. True b. False Indicate whether the statement is true or false
Amanda went on a crash diet in order to look terrific for a friend's wedding. She consumed only 800 calories per day compared to the 3,000 calories per day she normally consumed. After the wedding, she found that she rapidly passed up her original weight by ten pounds, even though she was eating 2,500 calories per day instead of her original 3,000 . What's going on here? a. Amanda must have
reduced her activity level substantially. b. Amanda's metabolism must have slowed down too much because of her dramatic restriction of calories. c. Amanda must be cheating. There is no way this could happen if she ate 2,500 calories per day. d. Everybody gets larger when they get older.
Which of the following could not be an accurate statement? a. Tom has been hospitalized due to lung cancer that has metastasized to his brain
b. Tom has been hospitalized due to a glioma that has caused him to have seizures. c. Tom has been hospitalized due to a benign tumor that has spread to his liver. d. Tom has been hospitalized due to a meningioma that will be removed from his brain tomorrow.
To aid the newborn's breathing:
a. s/he is slapped on the buttocks. c. suction is used to remove mucus. b. s/he is held upside down to expel mucus. d. All of these are typically used.