Question

The structure of the cell membrane allows it to be selectively permeable. What is the name for the larger, brown structure in the diagram? Responses A lipid bilayerlipid bilayer B protein channelprotein channel C hydrophilic headshydrophilic heads D hydrophobic tailshydrophobic tails Question 2 What is the purpose of your answer for question #1? Responses A can only move substance into the cell with the use of ATPcan only move substance into the cell with the use of ATP B is only used to remove large waste products from the cellis only used to remove large waste products from the cell C are specifically meant to carry the smallest ions in and out of the cellare specifically meant to carry the smallest ions in and out of the cell D to assist in the movement of substances across the membrane by facilitated diffusion or active transportto assist in the movement of substances across the membrane by facilitated diffusion or active transport

Answer 1

Based on the context of your questions, let's address them one at a time:

Question 1: The larger, brown structure in the diagram likely refers to a component of the cell membrane that facilitates transport. Given the options, the correct answer would be:

B. protein channel.

Question 2: The purpose of a protein channel in the cell membrane is to aid in the transport of substances. Therefore, the correct response would be:

D. to assist in the movement of substances across the membrane by facilitated diffusion or active transport.

So, the answers are:

• Question 1: B. protein channel
• Question 2: D. to assist in the movement of substances across the membrane by facilitated diffusion or active transport.