cells

Question 1

what does the nucleus do in a cell

Answer 1

• contains genetic material,DNA determining the development, structure and material of the cell
  -The nucleus controls protein synthesis and the development and function of a cell
  -The DNA and protein is in the form of chromosomes

Question 2

name all parts of the nucleus

Answer 2

Question 3

what does the nuclear envelope do and what does it have

Answer 3

It allows communication with the cytoplasm
it does this using nuclear pores

Question 4

name the different sub cellular structures in a Eukaryotic cell

Answer 4

Question 5

what are ribosomes made up of

Answer 5

Protein and RNA ( rRNA)

Question 6

what is the function of the ribosomes

Answer 6

Used in protein synthesis

Question 7

structure of ribosomes and where are they found

Answer 7

• 2 sub units
  -some in cytoplasm some in REM

Question 8

ribosomes in eukaryotes

Answer 8

80s

Question 9

ribosomes in prokaryotic

Answer 9

70s

Question 10

What is the endoplasmic reticulum formed from

Answer 10

consist of flattened membrane sacs which form an internal transport system in the cell

Question 11

what is the rough endoplasmic reticulum covered in

Answer 11

ribosomes

Question 12

what is the function of the rough endoplasmic reticulum

Answer 12

to transport polypeptides

Question 13

what does the surface of the rough endoplasmic reticulum do

Answer 13

the ribosomes produce secretory proteins which are sent to the Golgi body for modification and/or packaging

Question 14

what does the smooth endoplasmic recticulum do

Answer 14

transports lipids/ fats

Question 15

what does the Golgi body do

Answer 15

-Adds carbohydrates to proteins recieved from rough endoplasmic reticulum to form glycoproteins
-Packages proteins/glycoproteins into Golgi vesicles for secretion
-Produces lysosomes a type of Golgi body that releases lyzozymes

Question 16

What is the function of lysosomes in the cell

Answer 16

-Digestion of material taken in by phagocytosis- lysosomes fuse with the vesticles formed during phagocytosis, releasing hydrolytic enzymes which digest the material inside
-Non functioning organelles within the cell may be engulfed and digested within lysosomes
-Release of enzymes outside the cell-sometimes the enzymes of lysosomes are released from the cell

Question 17

what are lysosomes/what are they made of

Answer 17

They are simple sacs containing hydrolytic enzymes surrounded by a single membrane
lysosomes formed in the Golgi body

Question 18

What is mitochondria involved in

Answer 18

Aerobic respiration

Question 19

What is the usual shape of mitochondria

Answer 19

rod shaped

Question 20

What is mitochondria bounded by

Answer 20

two membranes forming around an inner matrix

Question 21

What is between the outer smooth membrane and the inner folded membrane in mitochondria

Answer 21

inter-membrane space

Question 22

what are the folds of the inner membrane in mitochondria called

Answer 22

cristae

Question 23

what does the matrix contain in mitochondria

Answer 23

contains enzymes for respiration and contains DNA and ribosomes

Question 24

describe the structure of mitochondria