Cell functions - specific organlles

Question 1

cell membrane

Answer 1

sperates it fome neighbouring cells and the external environment

Question 2

cytoplasm

Answer 2

fills all the space between the nucleus and cell membrane. It is a thick fluid within the cell membrane and all the structures are suspended in it.

Question 3

centrioles

Answer 3

Centrioles’ function is to form spindle fibres and pull chromosomes in opposite directions. Involved in the reproduction of the cell.

Question 4

endoplasmic reticulum

Answer 4

provides a surface on which chemical reactions can occur. the channels between the paired membranes are used for storage or transport of materials

Question 5

Ribosomes

Answer 5

amino acids join together to make proteins

Question 6

cytoskeleton

Answer 6

gives the cell its shape and assist the movement of materials, organelles and the whole cell

Question 7

inclusions

Answer 7

substances that are not part of the cell structure but are found in the cytoplasm
i.e haemoglobin in red blood cells

Question 8

lysosomes

Answer 8

break down materials that are taken into the cell or break down worn-out organelles

Question 9

nucleus

Answer 9

• To control chemical reactions within the cytoplasm because the nucleus contains DNA (instructions for cell process)
• stores information needed for cellular divisions

Question 10

mitochondria

Answer 10

releases energy for the cell through the process of respiration

Question 11

Golgi body

Answer 11

packages proteins into vesicles for secretion of a cell,

Question 12

cytosol

Answer 12

• is the liquid part of the cell

- 75-90% water

Question 13

what is the difference between the smooth and rough endoplasmic reticulum

Answer 13

the smooth endoplasmic reticulum has no ribosomes attached to it but with the rough endoplasmic reticulum, ribosomes are attached.