For each of the following statements, answer with a D if the statement is true of simple diffusion, with an F if it is true for facilitated diffusion, and with an A if it is true of active transport. Any, all, or none of the choices maybe appropriate for a given statement. a) Requires the presence of an integral membrane protein. b) Depends primarily on the solubility properties of the solute. c) Work is done during the transport process. d) Applies only to ions e) Transport can occur in either direction across the membrane, depending on the prevailing concentration gradient. Solution Simple Diffusion: The term refers to process where substance through a membrane without the help of integeral membrane protien. the force used in this process is named as diffusion. Facilated Diffusion: This is the process in which solutes are transported across the plasma membranes with the help of membrane protien. Also known as passive transport. Even though transport protiens are invoved in the process its still a passive transport because solutes moving down the concentration gradient. Carrier protiens, gated channel protiens and channel protiens are the three types of transport protiens involved in this process. Active Transport: It is the process in which molecules are transported from lower concentration to higher concentration. The protiens are embeded inside the lipid bilayer and in this process the cell uses energy to transport something. In this process cell has to work to mantain proper balance of ions and molecules. If the process uses chemical energy such as ATP then it is called primary active transport and if there is use of electrochemical gradient then it is called Secondary active transport. So according to this the answers will be. a) requires the presence of integral membrane protien: F and A. b)Depends primarily on the solubility properties of the solute: D c)Work is done during the transport process: A d)Applies only to ions: A e) Transport can occur in either direction across the membrane, depending on the prevaling cncentration gradient: A..

1. For each of the following statements, answer with a D if the statement is true of simple diffusion,
with an F if it is true for facilitated diffusion, and with an A if it is true of active transport. Any,
all, or none of the choices maybe appropriate for a given statement. a) Requires the presence of
an integral membrane protein. b) Depends primarily on the solubility properties of the solute. c)
Work is done during the transport process. d) Applies only to ions e) Transport can occur in
either direction across the membrane, depending on the prevailing concentration gradient.
Solution
Simple Diffusion: The term refers to process where substance through a membrane without the
help of integeral membrane protien. the force used in this process is named as diffusion.
Facilated Diffusion: This is the process in which solutes are transported across the plasma
membranes with the help of membrane protien. Also known as passive transport. Even though
transport protiens are invoved in the process its still a passive transport because solutes moving
down the concentration gradient. Carrier protiens, gated channel protiens and channel protiens
are the three types of transport protiens involved in this process.
Active Transport: It is the process in which molecules are transported from lower concentration
to higher concentration. The protiens are embeded inside the lipid bilayer and in this process the
cell uses energy to transport something. In this process cell has to work to mantain proper
balance of ions and molecules. If the process uses chemical energy such as ATP then it is called
primary active transport and if there is use of electrochemical gradient then it is called Secondary
active transport.
So according to this the answers will be.
a) requires the presence of integral membrane protien: F and A.
b)Depends primarily on the solubility properties of the solute: D
c)Work is done during the transport process: A
d)Applies only to ions: A
e) Transport can occur in either direction across the membrane, depending on the prevaling
cncentration gradient: A.