4. The diagram shows an experiment kept at room temperature. What is present in the water surrounding the membrane after 45 minutes? * A amino acids and simple sugars
B protein and amino acids
C protein and simple sugars
D starch and simple sugars

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

Cells a and b are the same size and shape, but cell a is metabolically quiet and cell b is actively consuming oxygen. oxygen will diffuse more quickly into cell because . b the oxygen molecules inside cell b have a higher kinetic energy b. a its membrane transport proteins will not be saturated c. a the diffusion gradient there is shallowerd. b the diffusion gradient there is steeper

Forensic scientists think they know the identity of a skeleton. what rule should they use to select a relative whose dna could be used to try to confirm the identity?