Transport Across The Cell Membrane! Trivia Quiz

1. Which substance is required for the movement of substances across the membrane when going against the concentration gradient.

PC

Glucose

ATP

Carrier mediated process that does require energy provided by ATP. Movement of substance to another side of PM and subsequent release from carrier is fuelled by the breakdown of ATP.

Explanation

Carrier mediated process that does require energy provided by ATP. Movement of substance to another side of PM and subsequent release from carrier is fuelled by the breakdown of ATP.

2. Osmosis is the diffusion of water across a semi-permeable membrane. The water will move across the membrane where there is a lower concentration of water and a higher concentration of________

Air

Solute

O2

Osmosis sees the movement of water across the membrane where the concentration of water is less and the solute is higher.

Explanation

Osmosis sees the movement of water across the membrane where the concentration of water is less and the solute is higher.

3. The process of diffusion is where the particles move from low to high concentration.

True

False

The particles move down the concentration gradient i.e. from high to low concentration.

Explanation

The particles move down the concentration gradient i.e. from high to low concentration.

4. Channel mediated facilitated diffusion is dependent on __________ channels to develop pathways for materials to pass through.

Carbohydrate

Glucose

Protein

Protein channels create pathways for materials to pass through the transportable membrane.

Explanation

Protein channels create pathways for materials to pass through the transportable membrane.

5. The carrier in the mediated facilitated diffusion is known as the transporter.

True

False

Mediated facilitated diffusion is a process in which molecules are transported across the cell membrane with the help of specific carrier proteins. These carrier proteins are known as transporters. They bind to the molecules and facilitate their movement across the membrane. Therefore, the statement "The carrier in the mediated facilitated diffusion is known as the transporter" is true.

Explanation

Mediated facilitated diffusion is a process in which molecules are transported across the cell membrane with the help of specific carrier proteins. These carrier proteins are known as transporters. They bind to the molecules and facilitate their movement across the membrane. Therefore, the statement "The carrier in the mediated facilitated diffusion is known as the transporter" is true.

6. Which form of transport sees the movement of substances across the membrane as going against the concentration gradient?

Passive

Facilitated

Secondary Active

Active

diffusion is the movement of molecules down a diffusion gradient
Active transport is the movement against a concentration gradient

Explanation

diffusion is the movement of molecules down a diffusion gradient
Active transport is the movement against a concentration gradient

7. Particles which are free to move across the cell membrane have ________ energy.

Partial

Free moving

Kinetic

Kinematic

Particles that are free to move across the cell membrane have kinetic energy. Kinetic energy is the energy possessed by an object due to its motion. In the context of particles moving across the cell membrane, kinetic energy refers to the energy associated with their movement. This energy is essential for various cellular processes such as diffusion and active transport. Therefore, the correct answer is "Kinetic."

Explanation

Particles that are free to move across the cell membrane have kinetic energy. Kinetic energy is the energy possessed by an object due to its motion. In the context of particles moving across the cell membrane, kinetic energy refers to the energy associated with their movement. This energy is essential for various cellular processes such as diffusion and active transport. Therefore, the correct answer is "Kinetic."

8. Which of the following can move through the cell membrane as a means of simple diffusion?

Fatty acids

O2 and CO2

Ions

1. lipid soluble compounds (fatty acids, steroids, alcohols)
2. dissolved gasses (CO2 & O2)
3. absorption of nutrients and excretion of some waste products

Explanation

1. lipid soluble compounds (fatty acids, steroids, alcohols)
2. dissolved gasses (CO2 & O2)
3. absorption of nutrients and excretion of some waste products

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