Revision Test Nov Yr 8

Question 1

What is photosynthesis

Answer 1

Plants make food through the process of photosynthesis

Question 2

Where does photosynthesis take place

Answer 2

Mainly takes place in the chloroplasts in the leaf cell

Question 3

Photosynthesis word equation

Answer 3

Carbon dioxide + water —> glucose + oxygen

Question 4

What else is needed - photosynthesis

Answer 4

Light and chlorophyll

Question 5

What minerals do plants need & how could u tell if they are deficient in these?

Answer 5

Nitrates, phosphates, potassium, magnesium

Question 6

Aerobic respiration- what is it ?

Answer 6

A chemical reaction that is used with oxygen to create energy from carbohydrates (sugar)

Question 7

How can u tell they are deficient? Minerals

Answer 7

Nitrates - plant will have poor growth and older leaves are yellowed

Magnesium- plants leaves will turn yellow

Phosphorus- plant will have poor root growth and younger leaves look purple

Potassium- has yellow leaves with dead patches

Question 8

We’re does aerobic respiration take place ?

Answer 8

That takes place inside a cell in the mitochondria

Question 9

Word equations- aerobic respiration

Answer 9

Glucose + Oxygen —> carbon dioxide + water + energy

Question 10

Anaerobic respiration- what is it ??

Answer 10

Plants and microorganisms can also respire without oxygen

Question 11

Word equation - anaerobic respiration

Answer 11

Glucose —> ethanol + carbon dioxide (+energy)

Question 12

In animal cells - anaerobic respiration

Answer 12

Glucose -> lactic acid _ creates cramp

Question 13

In yeast - Anaerobic respiration

Answer 13

Yeast form ethanol and carbon dioxide during anaerobic respiration- this is known as fermentation and is used in the manufacture of bread and alcoholic drinks - ethanol ends in “ol” so we know it’s an alcohol - useful bc it makes bread and alcohol

Question 14

Exercise - what happens to our ❤️rate and breathing rate when we exercise

Answer 14

It increases a lot - because you need energy to make ur muscles work and to get energy you need respiration and for that to happen you need oxygen and glucose so you heart pumps faster to get more blood around the body which delivers oxygen and glucose.

Question 15

What is oxygen dept? Exercise

Answer 15

After you have done exercise you become out of breath cus u need to take in oxygen to break down all the Latic acid

Question 16

Ecology definitions: interdependence

Answer 16

If two organisms both depend on each other for something this is called interdependence

Question 17

Food chain?

Answer 17

A food chain is a diagram that shows what an organism eats

Question 18

Food web?

Answer 18

Most animals eat more than one organism so scientists show this in food webs

Question 19

Producer?

Answer 19

Plants are producers they make their own food through the process of photosynthesis

Question 20

Consumer?

Answer 20

Are organisms that eat other animals or plants to obtain food

Question 21

Herbivore?

Answer 21

Animals that only eat plants and vegetation

Question 22

Carnivore?

Answer 22

Animals that only eat meat

Question 23

Predator?

Answer 23

They eat other animals

Question 24

Prey?

Answer 24

They get eaten by other animals

Question 25

Bioaccumulation?

Answer 25

Toxic chemicals can build up in organisms through a food chain this is bioaccumulation

Question 26

Ecosystem?

Answer 26

This is the name given to the plants and animals that are found in a particular location and the area in which they live these animals and plants depend on each other to survive

Question 27

Habitat?

Answer 27

The area they live in

Question 28

Community?

Answer 28

The organisms in an ecosystem

Question 29

Population?

Answer 29

The number of organisms of one species

Question 30

Niche

Answer 30

This is a particular place or role that an organism has within an ecosystem

Question 31

Periodic table - what do we call group 0

Answer 31

Noble gases

Question 32

What is listed and how are these classified

Answer 32

They are listed by elements and classified as metals and non metals

Question 33

Columns are called?

Answer 33

Groups

Question 34

Rows are called?

Answer 34

Periods

Question 35

What are the properties of metals

Answer 35

Metals ————- Sonorous Good conductor of electricity High density Shiny Malleable Good conductor of heat Oxides form alkaline solutions Ductile

Question 36

Properties of non metal?

Answer 36

Non metals ——————- Not sonorous Poor conductor of electricity Low density Dull Brittle Poor conductor of heat Oxides form acidic solutions

Question 37

What do we call group 1?

Answer 37

Alkaline metals

Question 38

What is group 7 called ?

Answer 38

Halogens

Question 39

What is the trend in reactivity? - group 1

Answer 39

Gets more reactive as it goes down

Question 40

How do they react with h20

Answer 40

Very aggressively

Question 41

Trend in reactivity group 7

Answer 41

Decreases as it goes down

Question 42

What is the displacement reaction

Answer 42

When 1 thing kicks out antöne mother to do with we’re it is in the list

Question 43

What properties do the elements have?

Answer 43

Very unreactive