B3 + B4

Question 1

Cells

Answer 1

Building blocks of cells

Question 2

Tissues

Answer 2

A group of cells with a similar structure or function

Question 3

Organs

Answer 3

Group of tissues working together to do a specific job

Question 4

Organ system

Answer 4

Group of organs that carry out a specific job

Question 5

The mouth

Answer 5

Where the teeth and tongue work together to chop and grind the food into smaller pieces

Question 6

Salivary glands

Answer 6

Produce an enzyme called amylase which catalyses the reaction to break down the starch into simple sugars. Also makes mucus which makes the food slippery to swallow

Question 7

Emulsification

Answer 7

Bile breaks down the fat in the food into smaller droplets which mix together to form watery liquids

Question 8

The gallbladder

Answer 8

Bile is stored there it travels along the bile duct and into the small intestine.

Question 9

Ileum glands

Answer 9

Produce enzymes to break down food

Question 10

The oesophagus

Answer 10

Has a muscled wall, these contract behind the food to push it in a wave like motion

Question 11

The stomach

Answer 11

Food enters the stomach through the ring of muscle called the sphincter

Question 12

Sphincter

Answer 12

Contractions of the muscle churn up food into a liquid known as chyme

Question 13

Stomach - what happens

Answer 13

Mixes the food with stomach acid so they can regulate the protein digesting enzymes so they can work efficiently, also kills the bacteria that is digested with the food

Question 14

The pancreas

Answer 14

A gland which secretes the hormones which controls glucose levels in the blood. This rises after eating which means insulin is released and then it is converted into glycerol for storage in the liver

Question 15

The large intestine

Answer 15

Made up of the colon, appendix and rectum, all the food had been digested and absorbed into the blood, the colon absorbed the water into the blood and poo is made

Question 16

What is everything broken down to
Proteins
Carbs
Lipids

Answer 16

Proteins are broken down into amino acids
Carbohydrates are broken down into simple sugars
Lipids are broken down into fatty acids and glycerol

Question 17

Protease
Act on substrate
Products
Where

Answer 17

Act on substrate - protein
Products - amino acids
Where - stomach and small intestine

Question 18

Carbohydrase
Act on substrate
Products
Where

Answer 18

Carbohydrates
Simple sugar
Mouth and small intestine

Question 19

Amylase
Act on substrate
Products
Where

Answer 19

Carbohydrates
Simple sugar
Mouth and small intestine

Question 20

Lipase
Act on substrate
Products
Where

Answer 20

Fats and lipids
Fatty acids and glycerol
Small intestine

Question 21

Enzymes

Answer 21

a biological catalyst that doesn’t take part in the reaction, but speeds it up

Question 22

Lock and key

Answer 22

Substrate is the substance on which an enzyme acts upon ( building or breaking down) - food particles

Question 23

Benidicts solution

Answer 23

Sugar test

Question 24

Iodine

Answer 24

Starch

Question 25

Blurest test

Answer 25

Protien

Question 26

Ethanol

Answer 26

Lipids

Question 27

Active site

Answer 27

Middle of lock and key

Question 28

Combined enzyme and substate complex

Answer 28

The substrate of the reaction fits perfectly into the enzyme like a lock and key. It goes straight into the active site.

Question 29

The effect of Temperature on enzyme activity

Answer 29

higher than 40 degrees. This is because the temperature increases more of the energy is being realsed, meaning the kenetic energy is allowing it to move quicker, allowing more reactions to take place in the enzymes. However, if it becomes hotter than 41 degrees the enzymes will begin to die and deactivate resulting in death.

Question 30

Ph effect

Answer 30

Force and shape on the enzyme

Question 31

Components to the blood

Answer 31

red blood cells , white blood cells, plasma, platelets

Question 32

Function if a red blood cell

Answer 32

packed with haemoglobin which binds with oxogen - it also transports the oxogen around the body

Question 33

White blood cells

Answer 33

Bigger than red blood cells , and help fight harmful microorganisms and digest bacteria and diseases

Question 34

Plasma

Answer 34

Yellow liquid to transport waste co2 around the body to digest in the small intestine

Question 35

Platelets

Answer 35

Small fragments of cells which repair blood clots and scabs

Question 36

High in oxogen =

Answer 36

Oxygenated

Question 37

Low in oxogen

Answer 37

Deoxygenated

Question 38

Double system

Answer 38

Two loops that the blood circulates

Question 39

Blood suppies what

Answer 39

Oxogen and glucoses

Question 40

Levels of organisation in a plant

Answer 40

Cells -——> palisade cell, epidermal cell, guard cell Tissue ——-> palisade mesophyll, epidermal mesophyll, xylem phloem Organs——-> leaf

Question 41

Guard cells

Answer 41

Guard cells - control the opening and closing of the stomata

Question 42

Stomata

Answer 42

Stomata - allows gases to move in and out of the leaf and into the mesophyll tissue

Question 43

Spongy mesophyll

Answer 43

Spongy mesophyll - carry out photosynthesis but also have big air spaces and a large surface area to make the diffusion of gasses quicker and easier

Question 44

Palisade mesophyll

Answer 44

Palisade mesophyll - carry out photosynthesis as they have lots of chloroplast

Question 45

Upper and lower epidermal

Answer 45

Upper and lower epidermal - cover the surface of the leaf and protects them

Question 46

Field view equation

Answer 46

Field number | objective magnification

Question 47

Volume equation

Answer 47

Volume = pi r2 x h

Question 48

Rates of reaction equation

Answer 48

Volume | time

Question 49

Rates of reaction units

Answer 49

mm3 min -1