Smoking has multiple potential effects on the embryo and fetus. Explain how it can slow fetal growth, leading to low birth weight babies
What will be an ideal response?
Answer: Smoking can cause epigenetic modifications that lead genes critical to growth to be turned off at the wrong times. It also interferes directly with the absorption of oxygen into the fetal bloodstream.
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Six-month-old Barbie watches as two dolls are placed behind a screen. When the screen is removed, Barbie sees either two dolls (possible) or one doll (impossible). Which of the following reactions is the infant likely to show?
a. Barbie will not notice any difference between the possible and impossible outcomes, as evidenced by no difference in looking times at the two outcomes. b. Barbie will look longer at the impossible outcome than the possible outcome. c. Barbie will look longer at the possible outcome because it is familiar to her. d. Barbie will not look at either outcome because they will have habituated to the original stimulus.
Regions of the left prefrontal cortex of the brain appear to be specialized for positive emotions, such as happiness
Indicate whether this statement is true or false.
If an image of Abraham Lincoln's face was flashed on a screen, the viewer could hold the visual impression in their sensory register as a
a. memory code. c. memory trace. b. sensory trace. d. all of these
The purity, richness, or vividness of a hue is known as its ______
a. brightness c. additive mix b. saturation d. depth