Cell structure

Question 1

What is the nucleus?

Answer 1

Contains the cells chromosomes which are made of DNA. These hold the genetic information which controls the cell.

Question 2

What is the mitochondria?

Answer 2

This is the site of aerobic respiration. Found in cells with high energy demands, such as muscle cells.

Question 3

What is the cell membrane?

Answer 3

This consists of phospholipid and protein molecules. It is selectively permeable and controls the entry and exit of materials in and out of the cell.

Question 4

What is the ribosomes?

Answer 4

This is the site of protein synthesis. Ribosomes are found in the cytoplasm.

Question 5

What is the chloroplast?

Answer 5

This is the site of photosynthesis. Contain the green pigment chlorophyll which absorbs light energy.

Question 6

What is the cell wall?

Answer 6

Freely permeable layer around the cell membrane that supports and strengthens the cell.

Question 7

What is the cytoplasm?

Answer 7

A jelly-like substance that fills the cell. Where chemical reactions take place.

Question 8

What is the vacuole?

Answer 8

Contains cell sap, containing solution of salts and sugars.

Question 9

What is a plasmid?

Answer 9

Small circular DNA molecule that contains genes which helps cells to function.