cell organelles

Question 1

Cell wall

Answer 1

Provides strength and structure.
Made from microfibrils of cellulose.

Question 2

Cell membrane (plasma membrane)

Answer 2

Control the molecules/ions that can exit or enter the cell.

Question 3

Vacuoles

Answer 3

Plant only.
Provide support by making the cells turgid.
Membrane surrounding it is called a tonoplast.

Question 4

Nucleus

Answer 4

Contains the genetic information.
Controls the cells activities.

Question 5

Nuclear envelope

Answer 5

Controls the entry and exit of molecules.

Question 6

Nuclear pores

Answer 6

Allows large molecules to leave the nucleus.

Question 7

Nucleoplasm

Answer 7

Jelly like material that makes up the bulk of the nucleus.

Question 8

Nucleolus

Answer 8

Manufactures ribosomal RNA.

Question 9

Mitochondria

Answer 9

Site of aerobic respiration.
The inner membrane is folded into cristae.

Question 10

Chloroplasts

Answer 10

Site of photosynthesis.

Question 11

Ribosomes

Answer 11

Site of protein synthesis.

Question 12

Rough endoplasmic reticulum

Answer 12

Studded with ribosomes to provide a larger surface area for protein synthesis.
Provides a pathway for the transport of materials throughout the cell.

Question 13

Smooth endoplasmic reticulum

Answer 13

Does not have ribosomes.
Synthesises and transports lipids and carbohydrates.

Question 14

Golgi body

Answer 14

Made from sacs called cisternae.
Modifies and labels molecules.
Modified molecules are packaged in golgi vesicles and pinched off.

Question 15

Lysosomes

Answer 15

Also contain lysozymes.
Breaks down waste materials of the cell.

Question 16

Centrioles

Answer 16

Take part in cell division (they form the spindle fibres)