Biology Revision Y7 End Of Year Exams

Question 1

MRS GREN

Answer 1

Movement, respiration, sensitivity, growth, reproduction, excretion, nutrition

Question 2

Difference between breathing and respiration?

Answer 2

Breathing is the process of taking fresh air into your lungs and getting rid of carbon dioxide in your lungs, respiration is the process which takes place in every cell to release energy from the simple sugars (eg glucose) by reacting glucose with oxygen

Question 3

Difference between excretion and egestion?

Answer 3

Excretion, is the removal of toxic materials, waste products and excess substances for organisms, egestion is the passing out of undigested food as faeces, through the anus

Question 4

Word equation for respiration

Answer 4

Glucose + oxygen = carbon dioxide + water

Question 5

Word equation for photosynthesis

Answer 5

Carbon dioxide + water = oxygen + glucose

Question 6

Function of the ribosomes

Answer 6

Makes proteins

Question 7

Function of the cell membrane is an animal cell?

Answer 7

Controls what goes in and out of the cell

Question 8

Function of mitochondria in an animal cell?

Answer 8

Site of respiration

Question 9

Function of cytoplasm in an animal cell?

Answer 9

Sight of the other chemical reactions

Question 10

Function of the nucleus in an animal cell?

Answer 10

Controls all activities

Question 11

Function of chloroplast in an animal cell?

Answer 11

Absorbs light for photosynthesis

Question 12

Function of the vacuole in a plant cell?

Answer 12

Keeps the cell in place and stores waste

Question 13

Function of the cell wall in a plant cell?

Answer 13

Maintains the shape

Question 14

Groups (tissues eg)

Answer 14

Cells are grouped into tissues, tissues are groups of similar cells working together to perform a specific function, and organs are grouped into organ systems

Question 15

Main organs for plants?

Answer 15

Leaves, stem, roots

Question 16

Respiratory organ system?

Answer 16

The lungs, airway and blood

Question 17

Urinary

Answer 17

.

Question 18

Nervous organ system?

Answer 18

Eyes, ears, nose, tongue, and skin

Question 19

Digestive organ system?

Answer 19

Mouth, oesophogus, stomach, pancreas, small intestine, large intestine, anus

Question 20

Circulatory organ system?

Answer 20

The heart and all the blood vessels in the body which carry cells and substances to all its parts

Question 21

Food test for starch

Answer 21

IODINE = BROWN OR ORANGE = POSITIVE

Question 22

Food test for glucose?

Answer 22

BENEDICTS = ORANGE OR RED = POSITIVE

Question 23

Food test for protein?

Answer 23

BIURET = PURPLE = POSITIVE

Question 24

A balanced diet contains:

Answer 24

Carbohydrates, proteins, fats, vitamins, minerals, fibre and water

Question 25

Carbohydrates?

Answer 25

Examples: bread, cereal Gives energy

Question 26

Proteins?

Answer 26

Example: fish, chicken Growth and repair

Question 27

Fats (lipids)?

Answer 27

Examples: nuts, butter Gives energy, stores energy

Question 28

Vitamins?

Answer 28

Examples: fruits, vegetables Small amounts to maintain health

Question 29

Minerals?

Answer 29

Examples: salt, milk Small amounts to maintain health

Question 30

Fibre?

Answer 30

Example: vegetables, bran To help the food move through the digestive system

Question 31

Water?

Answer 31

Examples: water, juice Needed for cells and body fluids

Question 32

Peristalsis?

Answer 32

Food moves through the digestive system, uses muscular contractions to push food along

Question 33

Difference between mechanical (physical) and chemical digestion

Answer 33

Mechanical digestion physically breaks down food into smaller molecules. Chemical digestion uses enzymes to break the food molecules down.

Question 34

Ingestion

Answer 34

The process of food entering the mouth and going into the digestive system

Question 35

Digestion

Answer 35

Breaking down large insoluble molecules into smaller soluble ones that we absorb into the blood

Question 36

Absorption

Answer 36

The process of which small soluble food molecules pass through the wall of the small intestine into the bloodstream

Question 37

What are digestive enzymes produced to do

Answer 37

Digestive enzymes are produced by our body to digest large insoluble food molecules into smaller soluble food molecules, to enable absorption in the blood

Question 38

The three enzymes:

Answer 38

Carbohydrase, protease and lipase

Question 39

Where does carbohydrate digestion begin

Answer 39

In the mouth with a carbohydrase enzyme produced with saliva

Question 40

Where does protease digestion start

Answer 40

In the stomach with a protease enzyme

Question 41

Where does fat digestion begin

Answer 41

In the small intestine with a lipase enzyme

Question 42

Five kingdoms and an example

Answer 42

Animals - dog Fungi - athletes foot Protoctists - amoebia Prokaryotes - E.coli Plants - rose

Question 43

What’s a microbe?

Answer 43

A tiny organism that can only be seen in detail using a microscope, they grow in warm, moist, protein rich enviro environments

Question 44

Pathogen

Answer 44

A harmful or disease causing bacteria

Question 45

What is diffusion

Answer 45

The movement of particles from higher to lower concentration

Question 46

Carbon cycle

Answer 46

Sunlight, photosynthesis, feeding, respiration, fossilisation, combustion, excrution, egestion, decomposition

Question 47

Key processes of the carbon cycle

Answer 47

Photosynthesis, take sunlight, absorbs carbon dioxide and turns it into sugar/starch = energy Respiration, living organisms release carbon dioxide Combustion, burning fossil fuels to release carbon dioxide Decomposition, dead carbon organisms broken down by fungi/bacteria