Organelles

Question 1

Define organelles

Answer 1

Small structures inside cells that perform a specific function

Question 2

What is the structure of a nucleus

Answer 2

A spherical structre enclosed by a double layer of plasma membrane which has pores and also contains a nucleolus

Question 3

Role of nucleus

Answer 3

Composed of chromosomes which contain the cells genetic DNA material

Question 4

Role of the mitochondria

Answer 4

Site of aerobic respiration and provides energy for the cell in the form of ATP.

Question 5

Where are ribosomes found?

Answer 5

Floating alone in the cell or attached to the e.r

Question 6

Role: Ribosomes

Answer 6

Site of protein synthesis

Question 7

Structure: Ribosomes

Answer 7

Non-membrane bound organlles that are made up of rRNA and protein

Question 8

Role: Rough ER

Answer 8

Involved in the synthesis and transportation of proteins

Question 9

Structure: Rough ER

Answer 9

A series of membrane bound channels, studded with proteins

Question 10

Role: Smooth ER

Answer 10

Involved in the synthesis and transportation of lipids

Question 11

Role: Golgi Apparatus

Answer 11

Stores, modifies and pacakages synthesised proteins for secretion from the cell

Question 12

Role and structure of lysosomes

Answer 12

Membrane bound strcutres that contain digestive enzymes> lysosomes digest any unwanted structures or substances inside the cell

Question 13

Define cytosol

Answer 13

Fluid inside the cell that surrounds the organelles

Question 14

Define cytoplasm

Answer 14

Fluid inside the cell that includes the cytosol and the fluid inside all the organelles exept the nucleus

Question 15

Define protoplasm

Answer 15

All the fluid inside the cell including the cytoplasm and the fluid inside the nucleus