Question

are the molecules able to cross the membrane? click the view image button to display the image from the microscopes screen in the labpad. a) no, because there is red fluorescence in the cells b) yes, because there is green fluorescence in the cells c) no, because there is yellow fluorescence in the cells d) yes, because there is red fluorescence in the cells

Explanation:

To determine if molecules cross the membrane, we analyze fluorescence. If a specific fluorescence (like green or red) is in cells, it indicates molecule entry. Option b says yes due to green fluorescence in cells, which is a common indicator of successful membrane crossing (e.g., in fluorescence - based assays for molecule transport). Other options have inconsistent reasoning (e.g., red fluorescence reasoning in a and d, yellow in c doesn't align with typical assays).

Answer:

b) Yes, because there is green fluorescence in the cells