Cell structure and Cell size - Biology

Study of cell structure

Functions of the cells

• Living things are made up of cells

• Cells are the smallest working unit of living things

• All cells are from pre-existing cells through cell division

Smallest unit capable of performing life functions

• Ameoba proteus

• Bacteria

• Nerve

• Plant stem

• Blood

• Prokaryotic - simple cells e.g. bacteria

• Eukaryotic - complex cells e.g human and plant

• Free flowing structures

• Few internal structures

• Once celled organisms

• Cell wall/membrane

• Capsule

• Flagella

• Nucleoid

• Ribosomes

• Contain organelles

• Found in most living organisms

• Plant and Animal cells

• Nucleus

• Mitochondria

• Plasma cell membrane

• Endoplasmic Reticulum (Smooth and Rough)

• Nucleus

• Golgi

• Ribosomes

• Lysosomes

• Mitochondrion

• Cytoplasm

• Golgi

• Endoplasmic Reticulum (Smooth and Rough)

• Nucleus/Nucleoulus

• Large central vacuole

• Mitochondrion

• Cytoplasm

• Chloroplast

• An outer membrane that controls movement in and out of the cell

  • It is made of a phospholipid bi-layer

• Supports the shape of cells and protects cells

  • Commonly found in plant and bacteria cells

• An organelle that contains genetic material e.g. SNA and directs cell activities

• Surrounds the nucleus and opens to allow material to enter and leave the nucleus

  • Also made of two layers

• Genetic material loacted in the nucleus that contain