Chapter 10, Problem 21CQ

(a)

Summary Introduction

To explain: Whether the given information suggests that the movement of substance X into the cells is mediated by a protein transporter.

Concept introduction: The membrane proteins are the proteins that are present in the plasma membranes and interact with different molecules and ions. The integral or intrinsic proteins are the membrane proteins that are embedded in a phospholipid bilayer. Peripheral or extrinsic membranes of proteins are attached to the integral membrane protein or peripheral part of lipid bilayer but do not interact with the hydrophobic core of the phospholipid bilayer. They can be linked to the extracellular matrix of the cell or the cytosolic face of the plasma membranes.

(b)

Summary Introduction

To explain: The additional experiment that is able to perform to verify that a transport protein is available or not.

Concept introduction: The membrane proteins are the proteins present in the membrane of cell that interacts with the different molecules and ions. Mainly, the membrane proteins are of two types, namely the transporter protein and membrane receptor. The transporter proteins are the proteins that move the molecules and ions across the membrane.