<span>Pepsin is an enzyme that breaks down proteins into amino acids in the stomach (where the pH is 1-3). Pepsin needs to be in an acidic environment to be activated. The optimum temperature is between 30 oC and 40 oC because the average human body temperature is 37 oC. The optimum pH is the acidic one because your stomach has an acidic pH.</span>
Answer:
d. Water is transported in the phloem.
Explanation:
Xylem is the vascular tissue responsible for the movement of water and dissolved minerals from roots to various plant parts. Phloem is another vascular tissue that serves mainly in the translocation of sugars. The cohesion-tension model of water transport explains that the upward movement of water from roots to the aerial plant parts is drive by transpiration pull. Transpiration of water from leaves results in a large negative pressure in xylem elements. Cohesion and adhesion properties of water maintain the water column in xylem elements.
The correct answer is true hope this helps! ^0^ :)
Explanation:
plant cell only
- nucleus
- cell wall
- chloroplast
- golgi apparatus
- cell membrane
- ribosome
both plant and animal cells
- nucleus
- cell membrane
- ribosome
- golgi apparatus
I would go for B, because it is informing other scientists that could've been working on the same subject that here is a possible solution
