Cell Organelles and Arrangements + The Fluid Mosaic Model

Question 1

What structu the fluid mosaic model demonstrating?

Answer 1

the structure of the cell membrane

Question 2

Why is the fluid model model widely accepted?

Answer 2

Because the:
-estimated surface area

• chemical analysis

-electron microscope studies

• functions associated with the cell membrane are accounted for
• are all compatible with the model

Question 3

How does the fluid mosaic model show the cell membrane

Answer 3

as a ‘lipid sea” with many various proteins

Question 4

What is the function of a membrane?

Answer 4

they act as gatekeepers of the cell, controlling what can enter and what can leave a cell

Question 5

How are membranes distributed in eukaryotic cells?

Answer 5

they have a cell surface membrane around the outside of their cells, and membranes inside the cell around some of their organelles

Question 6

What is an organelle?

Answer 6

subcellular structures that carry out specific functions

Question 7

What is the effect of membranes surrounding organelles?

Answer 7

they allow different conditions in the organelles and so different reactions to occur in separate regions of the cells

Question 8

What is compartmentalization?

Answer 8

the separation of cell components

Question 9

How many layers of cell membrane are possible?

Answer 9

1) one or single layer
2) two layers or double membrane

Question 10

Which organelles have a double membrane?

Answer 10

• the nucleus
• the mitochondria
• the chloroplasts