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Flashcards in All Deck (58):
1

What type of cell do plants have

Eukaryotic

2

Plant Cells - Cell Wall

Plants have a rigid cell wall made of Cellulose. It supports the wall and strengthens

3

Plant cells - nucleus

A plant nucleus contains genetic material that controls the activities of the cell

4

Plant cells - Chloroplasts

- chloroplasts are where photosynthesis occurs, which means food for the plant
- They contain a green substance called chlorophyll which absorbs the light needed for photosynthesis

5

Plant cells - Ribosomes

Where proteins are made in the cell

6

Plant Cells -Mitochondria

Where the reactions for aerobic respiration take place. Respiration transfers energy that the cell needs to work

7

Plant cells - Permanent Vacuole

Contains cell sap, a weak solution of sugar and salts

8

EXAM QUESTION - Describe how a captive breeding programme can help to conserve chimpanzees in the wild

- Increasing numbers will be allowed
- Breeding in captivity produces more offspring
- less infant mortality
- Can then later introduce them into the wild

9

EXAM QUESTION - State two methods, other than captive breeding, of conserving endangered species

- Maintaining/protecting habitats
- Maintaining/protecting species
- Education
- Seed banks

10

EXAM QUESTION - Enzymes are biological catalysts - Explain what is meant by the term catalyst

A catalyst speeds up/increases the rate of a chemical reaction and is not changed by the reaction

11

EXAM QUESTION - State why enzymes are important in organisms

Without enzymes, reactions would be too slow to sustain life

12

EXAM QUESTION - State the principal source of all energy in the ecosystem

Sun

13

EXAM QUESTION - Name the process which first traps the energy

Photosynthesis

14

EXAM QUESTION - What term is used to describe disease causing organisms

Pathogens

15

EXAM QUESTION - Describe the defences of the body which prevent of fight infection

- Mechanical/Chemical barriers
- Stomach acid kills pathogens
- Skin keeps out pathogens
- Pathogens stick to mucus in the mouth, nose and lungs
- Antibodies are produced by white blood cells

16

EXAM QUESTION - Explain why antibodies are not successful in treating influenza

Influenze is a virus (not bacterial), antibodies do not destroy virus', they only destroy bacteria

17

EXAM QUESTION - State the name of an organism that can be used to make ethanol bio fuel from sugars

Yeast

18

EXAM QUESTION - State the process that this organism uses to make ethanol biofuel from sugars

Anerobic respiration

19

EXAM QUESTION - A lot of heat is needed for the final stage of making the bio-fuel. The heat can be provided by burning fossil fuels
Explain why it would be better to burn the remains of the sugar cane instead of burning a fossil fuel

- Fossil fuels are non-renewable
- Sugar cane
- Combustion of fossil fuels increases carbon dioxide
- Burning plants releases carbon dioxide

20

EXAM QUESTION - State the word equation for photosynthesis

Glucose + Oxygen = Carbon Dioxide + Water

21

EXAM QUESTION - Suggest reasons why the main percentage of carbon dioxide in the atmosphere has increased during the last 100 years

- More combustion/use of fossil fuels (for heat and power)
- Larger human population
- Deforestation leading to less photosynthesis
- Decay of cut down materials

22

EXAM QUESTION - State the organ that removes alcohol from the blood

Liver

23

EXAM QUESTION - Suggesting why drinking alcohol makes driving a car more dangerous

- Slower reactions
- Depressant
- Reduced self-control

24

EXAM QUESTION - State two other harmful effects of alcohol on the body

- Liver damage
- Addiction
- Slower reaction time
- Depressant
- Reduced self control

25

EXAM QUESTION - What is an allele

each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

26

Characreristics of living organisms (MRS GREN)

Movement - Place change in an organism
Respiration - Chemical reaction break down for energy and metabolism
Sensitivity - Ability to detect and respond to stimuli
Growth - Increase in size
Reproduction - Makes same kind of organism
Excretion - Removal of waste products
Nutrition - Intake of materials for energy, growth and development

27

What is classification

The science of replacing organisms into categories on the basis of their observable characteristics

28

What are the 5 kingdoms

Animal
Plants
Fungi
Protista
Prokaryote

29

Wich one of the 5 kingdoms is NOT a Eukoryote

Prokaryote

30

What are the characteristics of an animal

- Hunt for their own food
- Do not have a cell wall
- Have a nucleus

31

What are the characteristics of a plant

- Makes food through photosynthesis
- Cell wall made of cellulose
- Has a nucleus

32

What are the characteristics of Fungi

- Gets food by growing on other living organisms and getting their food from that organism
- Cell wall made of Chitin
- Has a nucleus

33

What are the characteristics of Prokoyte

Does no have a nucleus
- Unicellular
- Divided into two groups called Archaea and Bacteria

34

TRUE OR FALSE - Protists are part of the animal kingdom

False - They do not belong to any kingdom

35

Characteristics considered through classification

Kingdom
Phylum
Class
Order
Family
Genus
Species

36

Virus' and kingdoms

Virus' are not in any kingdom as it does not show the 7 characteristics unless they are in cells

37

Animal kingdom - Vertebrates

Fish, Amphibians, Reptiles, Birds and Mammals

38

What are the characteristics of fish

- Scales
- Eyes
- Fins
- Lays eggs in water

39

What are the characteristics of amphibians

- Moist skin
- Four limbs (webbed back feet0
- Eggs in water
- Eyes and ears

40

What are the characteristics of reptiles

- Dry skins and scales
- Four legs (except snakes)
- Shelled eggs on land
- Eyes and ears

41

What are the characteristics of birds

- Feathers
- Wings and 2 les
- Eggs with hard shell
- Eyes and ears

42

What are the characteristics of Mammals

- Fur
- Four limbs
- Live young
- Eyes and ears

43

Animal Kingdom - Invertebrates/Arthropods

Insects, Arachnids, Crustuceans and Myriopods

44

What are the characteristics of insects

- 3 pairs of legs
- Body divided into head thorax and abdomen
- One pair of antennae
- Pair of compound eyes
- May have wings

45

What are the characteristics of arachnids

- 4 pairs of legs
- Body divided into cephalorax and abdomen
- Several pairs of eyes

46

What are the characteristics of crustaceans

- 5+ pairs of legs
- Body divided into cephalorax and abdomen
- 2 pairs of antennae
- Compound eyes

47

What are the characteristics of Myriapods

- 10+ pairs of legs
- No obvious body division
- 1 pair of atennae
- Simple eyes

48

What are the two groups of the plant kingdom

Ferns
Flowering plants

49

Plant kingdom - Pollen

Pollen is absent in ferns
Pollen is present in flowering plants - this is how they reproduce

50

Plant kingdom - Seeds

Absent in ferns but present in flowering plants such as fruits

51

Plant kingdom - Flowers

Absent in ferns
present in flowering plants

52

Plant kingdom - Water

Water is required for fertilisation - Present in ferns but not present in flowering plants

53

EXAM QUESTION - What system is used for naming species

Binomial

54

EXAM QUESTION - What organ produces Urea

Liver

55

EXAM QUESTION - The diagram shows a neuron carrying an impulse which describes the type of Neurone and the direction of impulse

MOTOR neuron AWAY from the spinal chord

56

EXAM QUESTION - The diagram shows an eagles, eagles have hooked beaks that help them to ingest food - what is this an example of

Adaptation

57

EXAM QUESTION - How is energy transferred between organisms in a food chain

Ingestion

58

EXAM QUESTION - Modern technology has resulted in the production of insecticides,
What statement is false when describing insecticides

- Insecticides target weeds