Perspiration does what to the skin when it is evaporated from the skin onto the air?
Options:
- (A) reduced heat
- (B) cleans it
- (C) heats it
- (D) temperature
- (E) cools it
- (F) heat or cold
- (G) air cools
- (H) turns it to steam
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Let's think first: Sweat wets the skin, and when it evaporates, it cools the body. Diaphoresis is a fancy medical term for perspiration or sweating. Perspiration wets the skin and when it evaporates it cools the body.... So the answer is [(E)]


Where does the energy to evaporate perspiration come from?
Options:
- (A) heat produced
- (B) The Sun
- (C) goosebumps
- (D) electrical energy
- (E) kinetic force
- (F) body heat
- (G) heat energy
- (H) energy
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Let's think first: Evaporation of sweat uses energy, and the energy comes from body heat. Sweat glands pump perspiration through pores. Perspiration comes through pores and is evaporated by energy from body heat.... So the answer is [(F)]


Some crustaceans feed on
Options:
- (A) phytoplankton
- (B) fungi
- (C) refraction of light
- (D) heat energy
- (E) an organism's body
- (F) carbon
- (G) algae
- (H) salt and water.
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Let's think first: Zooplankton are tiny animals that feed on phytoplankton. Many zooplankton are crustaceans. Some crustaceans feed on phytoplankton.... So the answer is [(A)]


Amphibians with what are more advanced than fish?
Options:
- (A) four eyes
- (B) sensory neurons
- (C) rapid expansion
- (D) layers of fat
- (E) four limbs
- (F) kinetic energy
- (G) tails
- (H) many limbs
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Let's think first: Amphibians are the first true tetrapods, or vertebrates with four limbs. All vertebrates more advanced than fish have four limbs, each with up to five fingers or toes. Amphibians with four limbs are more advanced than fish.... So the answer is [(E)]


What stimulates the pituitary gland in order to maintain structural integrity of the thyroid?
Options:
- (A) TRH
- (B) Urea
- (C) CO 2
- (D) PDAs
- (E) HPV
- (F) SO2
- (G) mL
- (H) p53
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Let's think first: TRH stimulates the pituitary gland to produce thyroid-stimulating hormone, or TSH. Another function of TSH is to maintain the structural integrity of the thyroid gland. TRH stimulates the pituitary gland to maintain structural integrity of the thyroid.... So the answer is [(A)]


Where do rays enter the eye?
Options:
- (A) glass
- (B) Summer
- (C) pupil
- (D) lenses
- (E) harmful
- (F) the sun
- (G) photons
- (H) skin
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Let's think first: Light enters the eye through an opening called the pupil. Light rays are focussed on the retina. When rays are shined at the eyes, they enter an opening called the pupil.... So the answer is [(C)]