I just need somone kind enough to confirm my answers.
1. Membrane bound organelles are also referred to as ...
A) vesicles
B) channels
C) integral proteins
D) a and b
I think the probable answer is A.
2. Plasmolysis of human red blood cells would occur if the cell were in .. solution
A) isotonic
B) hypertonic
C) hypotonic
D) none of these
I'm really not sure, but my gut's telling me that the answer is B.
3. Gateway for ions to enter and leave a cell ...
A) hydrophobic end
B) hydrophilic end
C) protein channels
D) a, b, and c
I think this is C.
1. To confirm the answer for question 1, we can eliminate options B and C since they are not correct. The correct term for membrane bound organelles is not "channels" or "integral proteins." Option D, "a and b," includes option A, "vesicles," which is correct. Therefore, the confirmed answer for question 1 is A) vesicles.
2. To confirm the answer for question 2, we need to understand the concept of plasmolysis and the effects of different solutions on red blood cells. Plasmolysis refers to the process in which a cell shrinks and shrivels due to water loss. In this case, we need to determine which type of solution would cause water to move out of the red blood cells. If the solution surrounding the cells has a higher concentration of solutes (like salts or sugars) than the inside of the cells, it is considered hypertonic. Water will tend to move out of the cells to try and equalize the concentration, causing the cells to shrink. Based on this, the confirmed answer for question 2 is B) hypertonic.
3. To confirm the answer for question 3, we can eliminate options A and B since they refer to the properties of different ends of molecules rather than a gateway for ions to enter and leave a cell. Option D includes all the given options, but we can confirm the answer by considering the concept of ion movement through a cell membrane. Protein channels are responsible for allowing ions to pass through the cell membrane, so the confirmed answer for question 3 is C) protein channels.