Module 2 Chapter 1 Lesson 3 - Cell Structure

Question 1

What is the function of the ribosomes?

Answer 1

Protein synthesis

Question 2

What are two features of ribosomes?

Answer 2

Contains ribosomal DNA.
Float freely in the cytoplasm or attached to the membrane of the RER.

Question 3

What are the two functions of the cell membrane?

Answer 3

Controls movement in and out of the cell.
Compartmentalisation of the cell

Question 4

What are two features of the cell membrane?

Answer 4

Has a phospholipid bilayer.
Has cholesterol to maintain fluidity.

Question 5

What are three features of mitochondria?

Answer 5

Double membrane - controls entry and exit.
Cristae - folded extensions on the inner membrane so it increases the S:A for enzyme extensions.
Matrix - semi rigid material.

Question 6

What is function of the mitochondria?

Answer 6

Site of aerobic respiration to produce ATP.

Question 7

What are two features of the lysosome?

Answer 7

Double membrane
Enzymes such as protease and lipase.

Question 8

What are three functions of the lysosome?

Answer 8

Break down material ingested by phagocyte.

Release enzymes to destroy material around the cell.

Digest worn out organelles.

Question 9

What is a use of plant cell walls being freely permeable?

Answer 9

Gives it shape.

Question 10

What are five features of the chloroplasts?

Answer 10

Double membranes.
Stroma - fluid inside.
Thylakoid membranes
Chlorophyll pigment
Granum - a stack of thylakoid membranes.

Question 11

What is a function of chloroplasts?

Answer 11

Site of photosynthesis.

Question 12

What are two features of centrioles?

Answer 12

Made of microtubules and microfilaments.
Form spindle fibres during cell division.

Question 13

What are two features of the flagellum?

Answer 13

Made up of microtubules and microfilaments.
Made up of flagellin in prokaryotic cells.

Question 14

What is the function of the flagella?

Answer 14

Move cells.

Question 15

What is the function of the cilia?

Answer 15

To move mucus.