Topic B2-Circulatory Sysytem, Digestion System, Cancer, Plant Tissues

Question 1

What is a group of cells with a similar function and structure?

Answer 1

Tissue

Question 2

What are aggregations of tissues performing specific functions called?

Answer 2

Organs

Question 3

Which model is used to explain enzyme activity?

Answer 3

Lock and Key
🔒🔑

Question 4

Where is amylase produced?

Answer 4

Salivary glands
Pancreas

Question 5

Where is protease produced?

Answer 5

Stomach
Pancreas
Small intestine

Question 6

What does amylase do?

Answer 6

Breaks down starch into sugars

(amalyaSe = Starch&raquo_space; Sugars)

Question 7

What does protease do?

Answer 7

Breaks down proteins into amino acids

(PROtease ~ PROteins&raquo_space; amino acids)

Question 8

What to lipases do?

Answer 8

Break down lipids into fatty acids and glycerol

(LIPases ~ LIPids)

Question 9

Where is bile produced and stored?

Answer 9

• Produced - liver
• Stored - gall bladder

Question 10

What are the functions of bile?

Answer 10

• neutralise stomach acid
• emulsified fats so lipids can work efficiently

Question 11

Test for sugars?

Answer 11

Benedicts Test

Blue to brick red upon heating

Question 12

Test for starch?

Answer 12

Iodine

Orange/ brown&raquo_space; blue/black

Question 13

Test for protein

Answer 13

Bieuret reagent

Question 14

Why is heart described as double lump?

Answer 14

• right side pumps to the lungs (for oxygen)
• left side pumps around rest of body

Question 15

Which blood vessel brings deoxygenated blood from the body back to the heart?

Answer 15

Vena cava

Question 16

Which blood vessel transports blood from the heart to the lungs to pick up oxygen?

Answer 16

Pulmonary artery

Question 17

Which blood vessel transports blood from the lungs to the heart

Answer 17

Pulmonary vein

Question 18

Which blood cell transports oxygenated blood from the heart to the rest of the body?

Answer 18

Aorta 🫀

Question 19

Where is lipase produced?

Answer 19

Pancreas
Small intestines

Question 20

Where does gas exchange take place in animals?

Answer 20

Alveoli

Question 21

What is the natural resting heart rate controlled by?

Answer 21

Pacemaker cells located in the right atrium

Question 22

Which device can correct irregularlarities in the heart rate

Answer 22

Artificial pacemaker

Question 23

What are the 3 types of blood vessels

Answer 23

Capillaries
Arteries
Veins

Question 24

Which blood vessels have the thinnest walls

Answer 24

Capillaries

Question 25

Which blood vessels contain valves?

Answer 25

Veins

Question 26

Which blood vessels have the narrowest lumen?

Answer 26

Arteries

Question 27

Which blood vessels mainly carry oxygenated blood

Answer 27

Arteries

Question 28

Which blood vessels mainly carry DEoxygenated blood

Answer 28

Veins

Question 29

What 4 main substances does blood consist of?

Answer 29

White blood cells Red blood cells Plasma Platelets

Question 30

What 3 main ways can cardiovascular disease be treated?

Answer 30

Drugs Mechanical devices Transplants

Question 31

What are stents used for

Answer 31

Keeping Coronary arteries open

Question 32

What do statins do?

Answer 32

Reduce blood cholesterol

Question 33

What can faulty valves be replaced with?

Answer 33

Biological or mechanical valves

Question 34

What might happen if valves become faulty

Answer 34

Not open properly Or develop a leak

Question 35

What can be used whilst waiting for a heart transplant or to allow the heart to rest as an aid to recovery?

Answer 35

Artificial heart

Question 36

What is health

Answer 36

The state of physical and mental wellbeing

Question 37

What are risk factors?

Answer 37

Factors that lead to an increased rate of disease

Question 38

What can a poor diet, lack or exercise and smoking lead to?

Answer 38

Cardiovascular disease

Question 39

What can obesity lead to?

Answer 39

Type 2 diabetes

Question 40

What organs are affected by alcohol?

Answer 40

Brain Liver

Question 41

What risk factor can lead to lung cancer and lung disease?

Answer 41

Smokinh

Question 42

What can carcinogens, including ionising radiation lead to?

Answer 42

Cancer

Question 43

What is cancer?

Answer 43

Changes in cells that lead to uncontrolled growth and division

Question 44

What type of tumour is contained in one are and does not spread

Answer 44

Benign - does not spread

Question 45

What type of tumour can invade neighbouring tissues and other body parts to from secondary tumours?

Answer 45

Malignant - can spread

Question 46

What type of tumours are cancers?

Answer 46

Malignant

Question 47

Which lead cell layer contains the most chloroplasts?

Answer 47

Palisade mesophyll

Question 48

In which leaf cell layer does gaseous diffusion exchange occur?

Answer 48

Spongy mesophyll

Question 49

Which plant tissue transports water and dissolved ions up the plant

Answer 49

Xylem

Question 50

Which plant tissue is found growing at the tips of roots and shoots

Answer 50

Meristem tissue

Question 51

Which cells are responsible for controlling the opening and closing of stomata

Answer 51

Guard cells

Question 52

What are the pores on the underside of a leaf called

Answer 52

Stomata

Question 53

Which ch plant tissue transports dissolved sugars up and down the plant?

Answer 53

Phloem

Question 54

Which 4 factors affect the rate of transpiration?

Answer 54

Temperature Humidity Air movement Light intensity

Question 55

What is transpiration

Answer 55

The only evaporation of water through the stomata in the leaf

Question 56

Which 2 processes do root hair cells take in water and mineral ionsV

Answer 56

Osmosis Active transport