Which statement is true of water?
a. Water molecules attract hydrophobic substances.
b. Water evaporates after absorbing small amounts of heat energy.
c. Water’s hydrogen atom is slightly negative.
d. Water molecules are polar.
e. Water’s oxygen atom is slightly positive.
ANSWER: d
You might also like to view...
A pathway that generates ATP by substrate-level phosphorylation that does not require oxygen and produces various end products, including alcohols, acids, carbon dioxide, and hydrogen, is:
a. substrate-level phosphorylation. b. fermentative metabolism. c. oxidative phosphorylation. d. aerobic respiration.
Which flow of electrons is correct?
a. NADPH - photosystem II - Photosystem I - water b. Water - photosystem II - NADPH - Photosystem I c. Water - photosystem II - Photosystem I - NADPH d. Water - NADPH - photosystem II - Photosystem I e. Water - photosystem I - Photosystem II - NADPH
Which of the following is a characteristic of all chordates?
A) They all have vertebral columns. B) They all exhibit radial symmetry. C) They all have a notochord sometime during their life cycle. D) They all have an exoskeleton sometime during their life cycle.
Four of the following are true of euglenids. Which statement is false?
A. Many move by pseudopods. B. Many contain chloroplasts. C. Can be mixtrophs. D. Belongs to the same group as kinetoplastids. E. Use a contractile vacuole to maintain water balance.