Sub topic 2

Question 1

The process used to transport molecules across the membrane without energy:

Answer 1

Passive Transport

Question 2

Expulsion of molecules requiring energy to do so is an example of:

Answer 2

Exocytosis

Question 3

Passive transport of molecules occurs through:

Answer 3

Movement across a concertation gradient

Question 4

A microscope was set up to view some cells. An ocular lens of x10 magnification and an objective lens of x4 magnification was used. Calculate the total magnification.

Answer 4

X14

Question 5

A process in which cells absorb external material by engulfing it with the cell membrane.

Answer 5

Endocytosis

Question 6

The fluid mosaic phospholipid bilayer model describes:

Answer 6

Same type of molecule arranged in 2 layers with hydrophilic heads and hydrophobic tails

Question 7

A semi-permeable membrane:

Answer 7

Allows certain molecules to pass through the membrane

Question 8

Identify 2 types of active transport:

Answer 8

Phagocytosis and Endocytosis

Question 9

The difference between simple diffusion and facilitated diffusion:

Answer 9

Simple diffusion allows the direct transport of molecules across the cell membrane. Facilitated diffusion occurs via transmembrane proteins like carrier proteins and channel proteins.