Topic 1 Characteristics Of Living Organisms

Front 1

Nutrition

Back 1

Taking in of nutrients which are substances and mineral ions, containing raw material or energy for growth and tissue repair, absorbing them and assimilating them.

Front 2

Excretion

Back 2

The removal of toxic material from organisms, the waste product of metabolism

Front 3

Respiration

Back 3

This involves chemical reactions which break down nutrient molecules in living cells.

Front 4

Sensitivity

Back 4

This is the ability of organisms to detect or sense change in the environment and to make responses

Front 5

Reproduction

Back 5

This is the process which makes mode of the same kind of organism

Front 6

Growth

Back 6

This is the perminent increase in size and dry mass by an increase in the cell number, size or both

Front 7

Movement

Back 7

This is an action by an organism or part is an organism causing a change in position or place

Front 8

Diffusion

Back 8

Thus is the net movement of molecules from a region of their higher to their lower concentration down a concentration gradient, as a result of their random movement

Front 9

Osmosis

Back 9

This is the movement of water from a region of high to low concentration through a partially permeable membrane, down a water potential gradient.

Front 10

Hypotonic solutions

Back 10

A solution that has a higher water potential and a lower solute concentration compared to it's surroundings

Front 11

Hypertonic solutions

Back 11

A solution that had a lower water potential and a higher concentration compared with it's surroundings

Front 12

Isotonic solutions

Back 12

A solution that has equal water and skits concentration compared with it's surroundings

Front 13

Cell membrane

Back 13

Contracts the entry and exit of substances into and of of the cell

Front 14

Cell wall

Back 14

Gives plant Creek rigidity and strength

Front 15

Cytoplasm

Back 15

It contains the cell organelles in which the chemical reactions occur. This provides energy and chemical for cerulean function

Front 16

Chloroplast

Back 16

It contains chlorophyll to capture solar energy and concert CO2 and H2O into glucose

Front 17

Nucleas

Back 17

It regulates all cell activity. Ur contains chromosomes, structures made up of genetic information, that direct a cells Grier and reproduction

Front 18

Vacuole

Back 18

It gives the plant cell rigidity as water pushed against the membrane. It can also act as a storehouse for things such as water and sugar.

Front 19

Preparing a slide of a onion cell

Back 19

1. Clean slide

2. Take a piece of membrane from inner leaf

3. Must be thin and small

4. Lay fair to remove air bubbles

5. Add iodine

6. Add cover skip from one side to eliminate air bubbles

Front 20

Plant cell

Back 20

Hint 20

- chloroplast present

- large vacuole

- cell wall present

Front 21

Animal cell

Back 21

- no chloroplast

- small or no vacuole

-no cell wall