Edexcel IGCSE Section 1

Question 1

Herbaceous legumes, which have nitrogen fixing bacteria in root nodules, include

Accepted Answer

Peas and beans

Question 2

Most bacteria feed by:

Accepted Answer

Feeding on living and dead organisms

Question 3

Give the life process defined by the 'release of energy from food'

Accepted Answer

Respiration

Question 4

Which kingdom has plasmids, which are small loops of DNA?

Accepted Answer

Bacteria

Question 5

Lactobacillus, which is used to make yoghurt, are a type of:

Accepted Answer

Bacteria

Question 6

Which system is common to all animals?

Accepted Answer

Nervous

Question 7

Which of these groups do not include any pathogens?

Accepted Answer

Plants

Question 8

Which kingdom carries out photosynthesis?

Accepted Answer

Plants

Question 9

When plants carry out photosynthesis, this is an example of the life process:

Accepted Answer

Nutrition

Question 10

Which kingdom have cell walls made of chitin?

Accepted Answer

Fungi

Question 11

Which kingdom is a 'dumping ground' for any species that don't fit elsewhere?

Accepted Answer

Protoctist

Question 12

Unicellular Plasmodium, which causes malaria, have a nucleus and are in which kingdom?

Accepted Answer

Protoctists

Question 13

Which of these kingdoms only has multicellular organisms?

Accepted Answer

Plant

Question 14

Bacterial DNA is found:

Accepted Answer

As a circular chromosome

Question 15

Which group of organisms has the smallest individuals?

Accepted Answer

Virus

Question 16

What can viruses infect?

Accepted Answer

All types of organisms

Question 17

When humans release carbon dioxide from their lungs, this is an example of which life process?

Accepted Answer

Excretion

Question 18

Some fungi, like mucor, have hyphae which are:

Accepted Answer

Thread like structure

Question 19

Which two kingdoms store carbohydrates and glycogen?

Accepted Answer

Fungi and Animals

Question 20

Algae are Protoctists rather than plants even though they photosynthesise because:

Accepted Answer

They are unicellular

Question 21

Which of these kingdoms don't have cell walls?

Accepted Answer

Animal

Question 22

Viruses are surrounded by:

Accepted Answer

Protein coat

Question 23

Which of these do animal cells have?

Accepted Answer

Cell membrane

Question 24

Which life process is not included in MRS NERG?

Accepted Answer

Control internal conditions

Question 25

Which of these is a pathogen?

Accepted Answer

The bacteria pneumococcus

Question 26

Humans increasing their breathing rate during exercise is an example of which life process?

Accepted Answer

Control internal conditions

Question 27

Which kingdom store carbohydrate as starch and sucrose?

Accepted Answer

Plants

Question 28

Tobacco mosaic virus discolours tobacco plant leaves by:

Accepted Answer

Prevent chloroplasts forming

Question 29

Heterotrophic organisms do what?

Accepted Answer

Eat other organisms

Question 30

Viruses can only reproduce inside other organisms, so are known as:

Accepted Answer

Parasites

Question 31

Seaweed is not a plant because it do not:

Accepted Answer

Have roots

Question 32

Which kingdom contains chloroplasts?

Accepted Answer

Plants

Question 33

What type of nutrition do fungi carry out?

Accepted Answer

Saprotrophic

Edexcel IGCSE Section 1

Questions 33

Edexcel IGCSE Section 1

Questions 33