A large organelle surrounded by nuclear envelopes which contains many pores.
20 micrometres
What is the function of the nucleus? (3 marks)
Controls cell through the production of mRNA
Retain genetic material of the cell
Manufactures ribosomal RNA and ribosomes
What is the mitochondria and its size?( 2 marks)
A rod shape organelle
1-10 micrometres
What is the function of the mitochondria? 2MARKS
Site of aerobic respiration( Krebs cycle and oxidative phosphorylation pathway)
Responsible for creating ATP
A large organelle surrounded by nuclear envelopes which contains many pores.
Controls cell through the production of mRNA
Retain genetic material of the cell
Manufactures ribosomal RNA and ribosomes
Nucleus
A rod shape organelle
Site of aerobic respiration( Krebs cycle and oxidative phosphorylation pathway)
Responsible for creating ATP
Mitochrondria
What the function of the smooth endoplasmic membrane?
Synthesis, store and transport lipids.
Synthesis, store and transport carbohydrates
What the function of the rough endoplasmic membrane?
Provides a large surface area of for the synthesis of proteins and glycoprotein.
Provide a pathway for the transport of materials
Provides a large surface area of for the synthesis of proteins and glycoprotein.
Provide a pathway for the transport of materials
Rough endoplasmic membrane
Synthesis, store and transport lipids.
Synthesis, store and transport carbohydrates
Rough endoplasmic membrane
What is the Golgi apparatus?
A stack of membranes that make up cisternae, with vesicles
What is the function of the Golgi apparatus?(5 marks)
Add carbohydrates to proteins to produce glycoprotiens
Produce secretory enzymes
Secrete Carbohydrates
Transport, modify and store lipids
Form lysosomes
Add carbohydrates to proteins to produce glycoprotiens
Produce secretory enzymes
Secrete Carbohydrates
Transport, modify and store lipids
Form lysosomes
Golgi Apparatus
What are lysosomes and how are they formed?(2 marks)
Vesicles containing enzymes
Produced by golgi apparatus
What the function of a lysosome?(4 marks)
Break down material ingested by phagocytic cells (e.g whit blood cells)
Release enzymes outside of the cell in order to destroy material around it (exocytosis)
Digest worn out organelles so that useful chemical can be reused
Break down cells after they died (autolysis)
Break down material ingested by phagocytic cells (e.g whit blood cells)
Release enzymes outside of the cell in order to destroy material around it (exocytosis)
Digest worn out organelles so that useful chemical can be reused Break down cells after they died (autolysis)
Lysosome
What are ribosome and what do they contain? (2 marks)
Small cytoplasmic granules attached to rough ER or float in cytoplasm
Contain ribosomal RNA and protein
What are the function of ribosome?
Site where protein are made
Site where protein are made
Ribosome
What are the two types of ribosomes and where can they be found? (2 marks)