Organisation of the Organism (1.6-1.7)

→Semi permeable

; allows some /specific substances in and out of the cell.

→Chlorophyl absorbs

light energy and converts it into chemical energy by photosynthesis.

turgor pressure

→ Provides to the plant cell and helps maintain its shape.

Flagellum

allows sperm to travel.

fatty sheath

The Axon (extenstion of the cytoplasm away from cell body to carry impulse long distances) is covered with which insulates the cell and speeds up the nerve impulse.

Haploid nucleus

containing genetic material for fertilisation.

Nucleus

: Contains genertic material of the cell in chromosomes which controls cell functions.

bulk transport of water

Do not have a nucleus or cytoplasm to make space for and minerals.

doublr membrane

Mitochondria: Made up of a(n) : inner and outer.

Vesicle

: Sac like structures containing secretory substances eg.

quantity of proteins

→Determines quality and made by the cell.

Ribosome

: The smallest cell of organelles present in the cytopplasm.

Motos

nerve cell: Carries message from central nervous system to the effector.

Vacoule

: Large, permanent, cenraly located in a plant cell but small and temporary in animal cells.

→Cell

: The basic structural unit of life.

Organism

: A group of organ systems which coordinate with each other to create an effective functioning of the body.

egg cell

Acrosome in head contains digestive enzymes to breakdown jelly coat around so sperm can penetrate .

nerve cell

Sensort : Conducts message from sense organ to the central nervous system.

Rough of Endoplasmic Reteculum

: Membranous outgrowth of outer nuclear membranes and has ribosomes attached to its surface.

→ Inner

has many foldings to increase the surface area for enzyme reactions.

Cells

are dead and hollow and connected from end to end to form a long continous tube.

Tissue

: A group of identical cells which work together to perform a specific function.

Organ

: Many tissues which work together to perform a specific function.

image size

The is usually given in centimetres or millimetres so make sure to convert both the actual size and units to be the same to get thr correct magnification.

Cell membrane

that modifies after fertilisation so that only one sperm cell can penetrate.

Cell wall

: Outer most sstructure in the plant cell, made of cellulose and is dead.