CELLS

CELLS

Cells:

• Prokaryotes 
• (Eg. Bacteria) absence of membrane bound organelles (any organelles in a cell that is surrounded by a membrane)

• Eukaryotes 
• (Eg. Animal and plant cells) presence of membrane bound organelles

Membrane bound organelles

Cytoplasm= cytosol + organelles within it

Eukaryotes:

Nucleus

membrane bound organelle that contains genetic material of cell DeoxyriboNucleic Acid (DNA)

↪ heredity

↪ direct cell activities

Chromosomes:

Chromosomes are compact structures into which DNA are organised. Contains proteins known as histones (basic protein)

Plasma membrane

To contain cytoplasm within the cell

Regulate/ control substances entering/ leaving the cell

This whole thing is a phospholipid bilayer. WHich means to say the cell membrane is a phospholipid bilayer. O.O

Lipid- Stands for what we know as FATS. Lipids consist of oil and fats.

Alcohol can be used to kill the lipid stuff in the membrane, which is why hand sanitizer is effective against bacteria

Membranes are partially permeable

semi-permeable ✘

selectively permeable ✘

Mitochondria

• Site of respiration.
• Breaks down the carbohydrates to monosaccharides.