B4 Organisng Animals And Plants

Question 1

Cell

Answer 1

The basic building blocks of all living things

Question 2

Tissue

Answer 2

A group of cells with a similar structure and function is called a tissue

Question 3

Organ

Answer 3

Combination of tissues carrying out a specific function

Question 4

Organism

Answer 4

Organ systems working together to form living organisms

Question 5

Sugar test

Answer 5

Benedicts solution

Blue-green to yellow-red

Question 6

Starch test

Answer 6

Iodine

Blue-black

Question 7

Lipid

Answer 7

Sudan III

Top layer bright red

Question 8

Iodine used for test in presence of starch

Independant variable -

Dependant variable -

Answer 8

Independant - the pH of solution

Dependant - time taken

Question 9

Dependant variable

Answer 9

The variable that is measured

Question 10

Independant variable

Answer 10

The variabe that isn’t changed

Question 11

Which is the liver and which is the pancreas in digestuve system

Answer 11

Liver is the bigger one and the one above the pancreas

Pancreas is between stomach and large intestine

Question 12

Purpose of digestive system

Answer 12

To break down large molecules into smaller soluble molecules

The rate sped up by enzymes

Question 13

How does an enzyme speed up rate of reactions without being changed or used up

Answer 13

The enzyme lowers the activation energy required for the reaction to occur

Question 14

What are enzymes made up of

Answer 14

Chains of amino acids folded into a globular shape

Question 15

What shape does the enzyme substrate fit into

Answer 15

Active site

Question 16

Enzymes

Answer 16

Proteins which are biological catalysts which speed up the rate of reactions

Question 17

Enzymes function in the digestive system

Answer 17

Break down food and aid digestion

Question 18

What happens when an enzyme is in extremes of pH or temperature

Answer 18

The enzyme will denature

Question 19

Denature

Answer 19

The bonds holding the 3D shape of active site will break and active site deforms

Substrate doesn’t fit in active site and enzyme cannot function

Question 20

Amylase

Reactant -

Product -

Answer 20

Starch

Sugars (glucose)

Question 21

Protease

Reactant -

Product -

Answer 21

Protein

Amino acids

Question 22

Lipase

Reactant

Product

Answer 22

Lipid

Glycerol and fatt acids

Question 23

Examples of enzymes

Answer 23

Amylase

Protease

Lipase

Question 24

Where is bile produced and stored

Answer 24

Produced in liver

Stored in gall bladder

Question 25

Bile

Answer 25

An alkaline which neutralises the
hydrochloric acid in the stomach

Question 26

What does bile do to fats

Answer 26

Emulsify fats into small droplets

Question 27

Heart

Answer 27

A large muscular organ which pumps blood carrying oxygen or waste products around the body

Question 28

Lungs

Answer 28

Site of gas exhange where oxygen from the air is exchanged for waste carbon dioxide in the blood

Question 29

Respiration reaction

Answer 29

Glucose + oxygen ———–> carbon dioxide + water + energy

Question 30

What does oxygen do in the respiration reaction

Answer 30

Release energy for the cells and carbon dioxide is made as a waste product during the reaction

Question 31

3 types lf blood vessels

Answer 31

Vein

Artery

Capillary

Question 32

Capillary

Answer 32

Narrow vessels which form networks to closely supply cells and organs between the veins and arteries