DescriptionPineapple juice is a liquid made from pressing the natural liquid from the pulp of the pineapple tropical plant. Numerous pineapple varieties may be used to manufacture commercial pineapple juice, the most common of which are Smooth Cayenne, Red Spanish, Queen, and Abacaxi.
        
             
        
        
        
So we know that to transport materials in or out of the cell, we need to have access to both the inside and outside of the cell. This would require that the protein be a transmembrane protein that reaches both the inside and the outside of the cell.
So in this case, let's look at pore proteins. These are proteins that cross a membrane and act as a pore for the materials that need to cross the membrane.
One example of a pore protein is an aquaporin. These proteins aid in the transport of water into or out of a cell.
Therefore, the answer to your question is: A) Pore proteins.
 
        
             
        
        
        
Answer:
The correct answer is - at the G1/S phase and G2/M phase.
Explanation:
The G1/S transition phase or checkpoint is a phase where the cell cycle arrested if during the evaluation of the DNA found damaged or other factors including external factors. Due to this evaluation and inadequate conditions, the cell will not enter the S phase.
The G2/M phase or transition phase is a checkpoint which takes place just before the M phase that ensures that all replicated DNA is not damaged before entering mitosis phase or M phase.
Thus, the correct answer is - at the G1/S phase and G2/M phase.
 
        
             
        
        
        
Answer:
The amount of energy the flowing H(+) ions have
Explanation:
Hope it helps.