The brain is not a muscle, like the heart, that can be worked and built. Which BEST explains why a consistent exercise regime has a positive impact on the brain?
ОА. .
Exercise generally requires a lot of thinking.
ОВ.
Exercise can eliminate all of the impact of stress.
OC.
Exercise helps maintain and create pathways in the brain.
OD.
Exercise is the only way to moderate the hormones that control the brain.

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)

Which one of the following represents the reduced forms of the two major electron carriers? nadh and fadh2 nad+ and fadh2 nad+ and fad nadh and fad