Cell Structure

Question 1

What is in an animal cell?

Answer 1

Chromatin, Ribosomes, Plasma membrane, Cytoplasm, Mitochondrion, Nucleus and Nuclear membrane

Question 2

What is the purpose of the mitochondria?

Answer 2

Mitochondria supply energy to the cell in a process known as respiration

Question 3

What part of the cell has one loop of DNA?

Answer 3

Each mitochondrion has a loop of DNA, mitochondrial DNA comes only from your mother

Question 4

What are ribosomes functions?

Answer 4

Their function is to make proteins

Question 5

What is the cytoplasm?

Answer 5

Jelly-like liquid in the cell that surrounds the nucleus

Question 6

What is the function of the cytoplasm?

Answer 6

Small bodies called organelles are suspended in the cytoplasm (e.g. ribosomes mitochondria)

Question 7

What is the cell membrane made up of?

Answer 7

The cell membrane is made up of phospholipids and proteins, which are in constant motion. Membranes are said to be fluid.

Question 8

What are the functions of the cell membrane?

Answer 8

• It is semi-permeable which allows some molecules freely into and out and others to enter
• Membranes give some support to the cell
• Membranes recognise molecules that touch them

Question 9

What is the nucleus?

Answer 9

• A large organelle near the centre of the cell is the nucleus
• It contains the genetic information
• It controls the activities of the cell

Question 10

What is in a nucleus?

Answer 10

• Double membrane with numerous nuclear pores
• These pores control the movement of substances into and out of the nucleus.
• A nucleolus which contains RNA, DNA and proteins and it makes ribosomes
• Chromatin which contains DNA that is arranged into chromosomes

Question 11

What are the functions of the nucleus?

Answer 11

• Genetic material
• Makes ribosomes
• Controls cell division
• Control centre of cell

Question 12

What is in a plant cell?

Answer 12

• Chloroplast
• Cell wall
• Plasma membrane
• Cytoplasm
• Vacuole
• Ribosomes
• Nuclear pores
• Chromatin (DNA)
• Nuclear membrane
• Mitochondrion

Question 13

What is the protoplasm?

Answer 13

All the living parts of a cell