Organisation

Question 1

What are cells?

Answer 1

The basic building blocks of all living things.

Question 2

What is a tissue?

Answer 2

A group of cells with a similar structure and function.

Question 3

What is an organ?

Answer 3

A combination of tissues carrying out a specific function.

Question 4

What is an organ system?

Answer 4

Organs working together within an organ system.

Question 5

What is an organism?

Answer 5

Organ systems work together to form whole living organisms.

Question 6

What is the order of organisation. (Bottom to Top).

Answer 6

Cell - Tissue - Organ - Organ system - Organism.

Question 7

What indicator do you use to test for sugar?

Answer 7

Benedict’s reagent.

Question 8

What indicator do you use to test for starch?

Answer 8

Iodine.

Question 9

What indicator do you use to test for protein?

Answer 9

Biuret solution.

Question 10

What indicator do you use to test for lipids? (Fat)

Answer 10

Sudan III

Question 11

What is the colour change in the solution if sugar is present?

Answer 11

Change from blue/green to yellow/red.

Question 12

What is the colour of the solution if starch is present?

Answer 12

Blue/black.

Question 13

What is the colour change in the solution if protein is present?

Answer 13

Blue to pink/purple.

Question 14

What is the colour of the solution if lipid is present?

Answer 14

Bright red.

Question 15

What is the purpose of the digestive system?

Answer 15

To break down large molecules into smaller, soluble molecules which are then absorbed into the bloodstream.

Question 16

What is an enzyme?

Answer 16

A biological catalyst that speeds up the rate of a reaction without being changed or used up.

Question 17

What do enzymes do?

Answer 17

Lower the activation energy for the reaction to occur.

Question 18

What do enzymes have?

Answer 18

An active site which the substrate fits in to.

Question 19

What happens to enzymes in extreme pH or temperature?

Answer 19

The enzyme will denature.

Question 20

What is produced in the liver?

Answer 20

Bile.

Question 21

Where is bile stored?

Answer 21

The gall bladder.

Question 22

What do pacemakers do?

Answer 22

Produce electrical impulses which stimulate the surrounding muscle to contract, squeezing the chambers of the heart and pumping the blood.

Question 23

How is coronary heart disease caused in the body?

Answer 23

The main arteries which supply blood to the heart can become blocked due to the build up of fatty deposits.

Question 24

What does the plasma do?

Answer 24

Transports different blood cells around the body.

Question 25

What do red blood cells do?

Answer 25

Transport oxygen.

Question 26

What supplies deoxygenated blood?

Answer 26

The vena-cava.

Question 27

What is the pulse?

Answer 27

Number of heart beats per minute.

Question 28

What do leaves do?

Answer 28

Absorb sunlight energy for use in photosynthesis.

Question 29

What cells do leaves contain?

Answer 29

Xylem and phloem.

Question 30

How are leaves adapted?

Answer 30

Flat and thin with a large surface area.

Question 31

What do xylem do?

Answer 31

Transport water and dissolved minerals towards the leaves.

Question 32

What do the phloem do?

Answer 32

Transports glucose and other products from photosynthesis around the plant.

Question 33

How do plants absorb water?

Answer 33

By osmosis through the rot hair cells of the roots.