Douching after intercourse may
A) actually propel sperm toward the uterus.
B) decrease the chance of pregnancy by about 85%.
C) restore the natural chemical balance of the vagina.
D) decrease the risk of contracting an STI or HIV.
A
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While talking to a friend at a noisy party, Julianna stops in the middle of a sentence and turns her head. According to the cocktail party effect, what did she probably hear?
a. a funny joke b. uninhibited behavior c. her name d. laughter
An enzyme called telomerase __________.
Fill in the blank(s) with correct word.
Which example shows experience-expectant brain development?
A. Tristan's parents let him climb all the time when he was young; therefore, he has very good balance and little fear of heights. B. Mari was born with a congenital cataract in one eye and received treatment too late; therefore, she lost the capacity to process visual stimuli in the affected eye. C. McKenzie's parents bought her a trampoline when she was 2 years old that she jumped on all the time and learned to do a flip at a very young age. D. Alex has loved playing with blocks and Legos from a very young age; now, that he is older, he has very good eye-hand coordination.
Able, Bob, and Chris are brothers. Able was born in 1985, Baker in 1988, and Chris in 1990. Statistically speaking, which sibling is slightly more likely to have the greatest IQ score?
A) Able B) Bob C) Chris D) no one; they are all equally likely to have the greatest IQ score.