Answer:
how much food is being moved at one time
Explanation:
Diffusion.
diffusion is passive, and the oxygen and carbon dioxide move to the area of lower concentration
Answer:
proteins
Explanation:
proteins embedded in the cellular membrane act as ushers. They help carry nutrients from bloodstream into cell. Glucose,amino acids,fats,and vitimans use carrier proteins to get inside cells.
Opiates (morphine and codeine) can be detected in urine for at least 48 hours after one eats food containing poppy seeds. As little as a single bagel covered with poppy seeds could produce a false positive test for these drugs.
a. can have both positive and negative
