Biology Paper 2

Question 1

What does the term “Abiotic” mean?

Answer 1

Non-living factor in an eviroment

Question 2

List 5 abiotic factor

Answer 2

Moisture level
Light intercity
Temperature
CO2
Oxygen level
Soil pH and mineral content

Question 3

What does the term “biotic” mean?

Answer 3

living factor

Question 4

List 2 change in abiotic factor that can affect population

Answer 4

Decrease in a mineral content of the soil that affect the growth of a plant species

decrease in plant population could affect any animal species that depend on it for food

Increase OR decrease in an abiotic factor is a change in environment

Affect size of population in a community

Change in an abiotic factor that affect one species could also affect the population of the size of other species that depends on them

Question 5

List 3 biotic factor

Answer 5

Competition (One species may outcompete another so that number are too low to breed)

Availability of Food (If there is less food available, the population size will decrease)

New Pathogen (Predictors are animal that kill other animal)

New Predictors (Predator are animal that kill other animals)

Question 6

What does the term “Adaption” mean?

Answer 6

the process by which a species becomes better suited to its environment through changes in structure, behaviour, or function.

Question 7

List 3 adaptation that allows organism to survive

Answer 7

Structural (Features of an organism body structure - shape, colour)

Behavioural (The way the organism behave)

Functional(Chemical reaction happening in a body, things that go on inside an organism body)

Question 8

Describes the stages of your water cycle?

Question 9

What’s the formula for Photosynthesis

Answer 9

Carbon dioxide + water -> glucose + oxygen

Question 10

What’s the formula for respiration

Question 11

What does does the term “ Combustion” mean?

Answer 11

Burning a substance in oxygen, usually producing heat and light

Question 12

Which organisms decompose dead organic matter?

Answer 12

Fungi

Question 13

Give 2 benefits and drawback of distillation

Answer 13

adv - easy to access

dis - requires energy
& expensive

Question 14

List the formula reacquired to calculate a student BMI

Answer 14

Height (m)²

Question 15

Why is performing the BMI calculation not always accurate

Answer 15

Calculates you’re muscles weight and fat

Question 16

What is a more accurate calculation BMI (Body mass index)

Answer 16

Waist-to-hips ratios

Question 17

What does under 18.5 indicate?

Answer 17

Underweight

Question 18

What does 24.9 indicate?

Answer 18

described as the ‘healthy range’

Question 19

What does 29.9 indicate?

Answer 19

Overweight

Question 20

What does between 30 and 39.9 indicate

Answer 20

Obiesity

Question 21

What occurs when an individuals is at a 18.5 in term of BMI

Answer 21

Low risk/Less likely to develop type 2 diabetes

Question 22

What occurs when an individuals is at a 29.9 in term of BMI

Answer 22

High risk/More likely to develop type 2 diabetes

Question 23

How do you develop Type 1 diabetes?

Answer 23

Genetic mutation // Pass around DNA

Question 24

How do you develop Type 2 diabetes?

Answer 24

Through Life styles factors, Poor diet , Lack of exercise , Consuming sugary foods

Question 25

What type of diabetes is required to inject a insulin

Answer 25

Type 1

Question 26

Can you cure type 1 diabetes

Answer 26

No

Question 27

Can you cure type 2 diabetes

Answer 27

Yes, thought having a balanced diet, Exercise, reduce intake in sugary drinks/food

Question 28

What does the nitrogen cycle represent

Answer 28

How Nitrogen(N₂) is recycled in the ecosystem

Question 29

Why do Humans and Animals need Nitrogen

Answer 29

in order to produce protein and nuclei acid such as DNA and RNA)

Question 30

What does WHO stand for?

Answer 30

World Health Orgasition

Question 31

What percentage of the air contain nitrogen

Answer 31

78%

Question 32

What's the name of the bacteria is used to convert nitrogen gas INTO nitrogen cointaing compound

Answer 32

(nitrogen fixation), are called Rhizobium.-ONLY REQUIRED TO Know nitrogen fixation

Question 33

What does the immune system fight of?

Answer 33

Pathogen

Question 34

Explain what does the term "Phagocytosis"

Answer 34

White blood cells can engulfs (Surrounds) pathogen and digest them

Question 35

What's the unique shape every pathogen have on it surface?

Answer 35

Antibodies

Question 36

How does your skin defend the body against pathogen

Question 37

Role of an immune systerm

Question 38

What is meant by the term "antigen"

Question 39

How do bacteria become resistant to antibiotic

Question 40

What does Photosynthesis produced?

Answer 40

glucose using light.

Question 41

What is meant by efficacy of drug

Question 42

State what aspirin is used for

Question 43

State what penicillin is used for

Question 44

Define Hormones

Answer 44

A Chemical substance produced by a gland, Carried by the blood and can therefore circulates around the body

Question 45

Where is the adrenaline found

Answer 45

Adrenal gland

Question 46

Where is insulin found

Answer 46

Pancreas

Question 47

Where is the testosterone found?

Answer 47

Testee

Question 48

Where is Progesterone found

Answer 48

Ovaries

Question 49

Where is Oestrogen found

Answer 49

Ovaries

Question 50

What is the role of Adrenaline

Answer 50

ready the body for flight or flight response

Question 51

Role of testosterone

Answer 51

Main sex hormone in males

Question 52

Role of Progesterone

Answer 52

Maintain Pregnancy

Question 53

Role of Oestrogen

Answer 53

main sex hormone in female

Question 54

What does the term Endocrine System mean?

Answer 54

Chemicals messengers produced by the glands

Question 55

What does Pituitary gland produces

Answer 55

Produces thyroxine.. makes hormones such as FSH and LH

Question 56

What does Thyroid produces

Answer 56

controls metabolic rates and affect growth

Question 57

What does pancreases produces

Answer 57

produces INSULIN, which regulates blood glucose level

Question 58

What does the adrenal gland produces

Answer 58

adrenaline

Question 59

what does testee produces

Answer 59

testosterone

Question 60

What does the ovaries produces

Answer 60

Oestrogen

Question 61

Define Photosynthesis

Answer 61

Chemical reaction that takes reaction inside a photosynthetic organism By converting light energy INTO chemical energy

Question 62

Why is Photosynthesis important?

Answer 62

They produces GLUCOSE used in respiration to release energy.

Question 63

Where does Photosynthesis take place?

Answer 63

Chlorplant

Question 64

What type of reaction is photosynthesis

Answer 64

Endothermic reaction that takes in form of light

Question 65

What does chlorphyll mean

Answer 65

A green pigment found in chloroplasts to ABSORB light

Question 66

What does CO2 combine to form a glucose

Answer 66

Hydrogen ions

Question 67

Whats the funtions of a root hair cells

Answer 67

absorbs the water and nutrient from the soil OR Increase the overall surface area of water absorption

Question 68

List 3 key term to use when describing a root hair cell

Answer 68

Thin cell wall Elongated shape Numerous of mitochondria *lots of*

Question 69

How long does a women menstrual cycle last

Answer 69

28 days

Question 70

What does the term Contraceptives

Answer 70

A method or device used to prevent pregnancy