B1-b4

Question 1

Growth

Answer 1

The increase of mass in an organism that occurs due to the increase in cell size or cell number

Question 2

Movement

Answer 2

All organisms are able to move. Most animals move their whole body and plant slowly move part of themselves.

Question 3

Sensitivity

Answer 3

An organism’s ability to perceive and respond to various stimuli in their environment.

Question 4

Excretion

Answer 4

Removing toxic materials and waste substances out of the body of an organism.

Question 5

Reproduction

Answer 5

The process of a living organism giving rise to a offspring

Question 6

Nutrition

Answer 6

Living things taking in materials for their surroundings that they use for growth and to provide energy.

Question 7

Respiration

Answer 7

Produces energy that is necessary for the functioning of the body.

Question 8

Cells

Answer 8

The smallest unit from which all organisms are made.

Question 9

Multicellular

Answer 9

Consisting of many cells

Question 10

Unicellular

Answer 10

Made of a single cell

Question 11

Eukaryotic and prokaryotic

Answer 11

Cells can be eukaryotic or prokaryotic. Eukaryotic cells are complex, animal and plant cells are eukaryotic cells. Prokaryotic cells are smaller and simpler, bacterial cells are prokaryotic cells.

Question 12

Animal cell

Answer 12

Nucleus - contains dna- controls what the cell does. It’s stored in structures called chromosomes.
Cytoplasm- where chemical reactions happen.
Cell membrane- holds the cell together and controls what goes in and out.
Mitochondria- where respiration happens. Respiration realises energy for the cell.
Ribosomes- join amino acids together to form proteins

Question 13

Plant cells

Answer 13

Contains everything a animal cell has including:
Cell wall- made of cellulose, it supports the cell and strengthens it.
Chloroplasts- where photosynthesis happens. Photosynthesis makes food for the plant.
Large vacuole- stores cell sap(solution of sugar/salt)

Question 14

bacterial cells

Answer 14

Chromosomal dna - one long singular strand of dna that controls what the cell does.
Ribosomes
Cell membrane
Plasmid dna- small loops of extra dna
Flagellum- one strand of hair like structure that helps the cell move.

Question 15

Metabolic reactions

Answer 15

Chemical reactions that take place in an organism.

Question 16

Magnification

Answer 16

Size of image divided by size of an actually object

Question 17

Particles

Answer 17

The smallest pieces of which a substance is made from; particles can be a molecule, atom or ion.

Question 18

Diffusion

Answer 18

The net movement of particles from a region of their higher concentration to a region of their lower concentration, as a result of their random movement.

Question 19

Independent variable

Answer 19

The variable that you change in an expirement

Question 20

Dependant variable

Answer 20

The variable , that you measureas you collect your results

Question 21

High water potential

Answer 21

An area where their are many water molecules, that is, a dilute solution.

Question 23

Low water potential

Answer 23

An area where their are not so many water molecules, that is, a concentrated solution

Question 24

Water potential gradient

Answer 24

The difference in water potential between 2 areas

Question 25

Turgor pressure

Answer 25

The pressure of water pushing out wards on a plant cell wall

Question 26

Plasmolysed

Answer 26

A description of a cell in which the cell membrane tears away from the cell wall