Question
Which of the following statements about molecule diffusion through the cell membrane of a LEAF cell is CORRECT? Oxygen diffuses IN for respiration __ [ALL of thesel __ Carbon dioxide diffuses IN for photosynthesis __ Glucose diffuses OUT as a product of photosynthesis
Answer
3.4
(224 Votes)
Daisy
Master · Tutor for 5 years
Answer
B
Explanation
This question revolves around basic concepts in biology. Specifically, it is examining the process of transport across the cell membrane in a leaf cell. To begin, it's vital to understand what diffusion is, a passive process where substance movies from a region of higher concentration to a region of lower concentration. In the context of a leaf cell:1. 'Oxygen diffuses in for respiration': This statement is correct. During respiration, cells in the leaves require oxygen that exists in the air spaces within spongy mesophyll in leaves.2. '[ALL of these]': To confirm if this statement is correct one must ensure if all other statements are also correct.3. 'Carbon dioxide diffuses in for photosynthesis': This statement is also true as Carbon Dioxide is a reactant in photosynthesis. It enters through the stomata in leaves and diffuses into the cells where photosynthesis occurs.4. 'Glucose diffuses out as a product of photosynthesis': This statement can be considered true. During photosynthesis, glucose is produced which can be transported to other parts of the plant where it is required.Since all the individual statements have been identified as correct, the '[ALL of these]' statement is also correct.