S1 Biology Unit 2

Cell

A basic unit of life

MRS. GREN Long Form

Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition

Microscope Types

Light Microscope, Electron Microscope

Nucleus Function

Control the cell, contain genetic material

Cell Membrane Function

Controls what goes in and out of the cell

Cytoplasm Function

Jelly-like substance in which chemical reactions takes place

Mitochondria Function

Provide energy using aerobic respiration

Cell Wall Function

Outer layer of a plant cell that keeps its shape in place

Vacuole Function

Pushing against the cell wall to keep the plant cell firm

Chloroplast Function

Capture light energy to make food for the plant

Specialized Cells

Cells that are adapted to carry out a particular function

Red Blood Cell Facts

Red blood cells:

make up more than half of your body’s cells.

are filled with haemoglobin

are small and flexible

don't have a nucleus

have a biconcave shape

A neurone’s parts

axon, insulation, branches

Neurone Facts

Neurones:

have long axons (up to 1m or longer)

connects to other neurones with branches

have insulation for electrical signals to travel faster

Ciliated Cell’s Function

Push away mucus from your lungs

Ciliated Cells Facts

Ciliated cells:

have cilia to push away mucus

have many mitochondria for energy

Palisade Cells’ location

Near the top of a leaf tightly packed together

Chlorophyll

Green coloured substance that traps light for the plant to use

Palisade Cell Facts

Palisade Cells:

are shaped like a brick

found in the top parts of a leaf

have chlorophyll

have many chloroplasts