Cell organelles and functions

Question 1

Structure and function of cell surface membrane

Answer 1

made of lipid and proteins
regulates movement of substances in and out of cell and responds to chemicals such as hormones using receptor molecules

Question 2

Nucleus structure and funtion

Answer 2

Double membrane, nuclear envelope that has pores, contains chromosomes as linear protein bound dna and has a nucleolus

Control cell activity by controlling transcription of dna
Nucleolus makes ribosomes
Pores allow substances such as rna to move between nucleus and cytoplasm

Question 3

Mitochondria structute and function

Answer 3

Is double membrane bound organelle with inner membrane being folded forming cristea and has a matrix containg enzymes involved in respiration
Site of aerobic respiration and production of ATP

Question 4

Chloroplast structure and function

Answer 4

Flattend structure with double membrane with membranes inside called thylakoids that are stacked against to form grana that are linked by lamellae
Site of photosynthesis with light dependent in grana and light independent in stroma

Question 5

Golgi structure and function

Answer 5

Fluid filled membrane bound flattend sacs with vesicles
Processes and packages new lipids and proteins
Forms lysosomes

Question 6

Golgi Vesicles

Answer 6

Fluid filled sac surrounded by membrane
Stores lipid and proteins made by golgi and transports them out of cell

Question 7

Lysosome structure and function

Answer 7

surrounded by membrane made from golgi vesicle
Contains digestive enzymes called lysozymes that can digest invading cells or break down worn out components of cell

Question 8

Ribosome

Answer 8

No membrane and made up of proteins and ribosomal rna
Site of protein synthesis

Question 9

Rer structure and function

Answer 9

System of membranes enclosing fluid filled space covered in ribsokes
Fold and process proteins made at ribsomes

Question 10

Ser structure and function

Answer 10

No ribosomes
Synthesise and process lipids

Question 11

Cell wall structure and function

Answer 11

In plant and algal cells made of cellulose and in fungi is chitin
Supports cell and prevents it from changing shape

Question 12

Cell vacuole structure and function

Answer 12

Membrane bound called tonoplast and contains cells sap
Helps maintain pressure in cell and keep cell rigid also stops wilting and isolation of unwanted chemicals in cell