8) each time a molecule of glucose is completely oxidized via aerobic respiration, how many oxygen (o2) molecules are required?
a) 1
b) 2
c) 6
d) 12
e) 38

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.

Drag the tiles to the correct boxes to complete the pairs. match each cell organelle with its description.