GCSE AQA Biology Unit 3

Gabi Germain
Quiz by , created over 4 years ago

Questions on the whole unit 3 Biology specification!

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Gabi Germain
Created by Gabi Germain over 4 years ago
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Question 1

Question
dissolved substances move by active transport and diffusion
Answer
  • True
  • False

Question 2

Question
how does water move across boundaries
Answer
  • diffusion
  • active transport
  • osmosis

Question 3

Question
osmosis is from an area of...
Answer
  • low concentration (dilute) to high concentration (concentrated)
  • high concentration to low

Question 4

Question
the membrane in osmosis is semi permeable
Answer
  • True
  • False

Question 5

Question
what causes the water to move In or out of the cell?
Answer
  • Difference in substance
  • Difference in concentration
  • Difference in energy

Question 6

Question
what do most soft drinks contain? (3 answers)
Answer
  • water
  • air
  • carbon dioxide
  • sugar
  • ions

Question 7

Question
why do sports drinks contain sugars?
Answer
  • so they can run faster and further
  • to replace sugar used in energy release during the activity

Question 8

Question
if water ions aren't replaced the ion/water balance of the body is disturbed so cells don't work efficiently.
Answer
  • True
  • False

Question 9

Question
why do sports drinks contain water?
Answer
  • to provide them with more energy
  • to replace water lost when sweating

Question 10

Question
which process of exchanging materials requires energy?
Answer
  • Osmosis
  • Active transport

Question 11

Question
Facts about active transport: (3 answers)
Answer
  • Substances absorbed with the concentration gradient
  • substances absorbed against the concentration gradient
  • uses energy from respiration
  • doesn't require energy
  • allows cells to absorb ions from very dilute solutions

Question 12

Question
How can you increase the efficiency of an exchange surface?
Answer
  • have a lower surface area
  • have a high surface area
  • being thin
  • having a long diffusion path
  • (In animals) having a good blood supply
  • being well ventilated (also only in animals)

Question 13

Question
why are exchange surfaces adapted in humans?
Answer
  • To increase effectiveness
  • to make sure things don't diffuse too fast

Question 14

Question
the size and complexity of an organism increases the difficulty of exchanging materials
Answer
  • True
  • False

Question 15

Question
what is the surface area of the lungs increased by?
Answer
  • alveoli
  • villi

Question 16

Question
what is the surface area of the small intestine increased by?
Answer
  • alveoli
  • villi

Question 17

Question
villi have an extensive network of capillaries to absorb products from digestion by active transport and diffusion
Answer
  • True
  • False

Question 18

Question
facts about the lungs: (4 answers)
Answer
  • protected by the ribs
  • below the diaphragm
  • above the diaphragm
  • diaphragm separates it from the thorax (the upper part of the body)
  • diaphragm separates it from the abdomen (lower part of the body)
  • in the upper part of the body

Question 19

Question
why does the breathing system take air into and out of the body?
Answer
  • so oxygen from the air can diffuse into the bloodstream and carbon dioxide can diffuse out into the air
  • so carbon dioxide from the air can diffuse into the bloodstream and oxygen can diffuse out into the air

Question 20

Question
what happens to make air move into the lungs, find the wrong answer?
Answer
  • ribcage moves up and out
  • ribcage move down and in
  • diaphragm becomes flatter
  • intercostal muscles contract as well as the diaphragm

Question 21

Question
the movement of air into and out of the lungs is known as what?
Answer
  • breathing
  • respiration
  • ventilation

Question 22

Question
carbon dioxide enters leaves by diffusion
Answer
  • True
  • False

Question 23

Question
where are most of the water and mineral ions absorbed?
Answer
  • the leaves from the air
  • the roots from the soil

Question 24

Question
how is the surface area of the roots increased?
Answer
  • by root hairs
  • by thin walls

Question 25

Question
how are leaves surface area increased?
Answer
  • by their flattened shape
  • internal air spaces
  • guard cells
  • being green

Question 26

Question
plants have stomata to get CO2 from the atmosphere and to remove/release oxygen produced in photosynthesis
Answer
  • True
  • False

Question 27

Question
where do plant mainly lose water vapour?
Answer
  • stem
  • leaves through the stomata
  • root systems

Question 28

Question
where is evaporation more rapid
Answer
  • hot dry windy conditions
  • cold wet and still conditions

Question 29

Question
if plants lose water faster than it is replaced what happens?
Answer
  • stomata close to prevent wilting
  • stomata open to induce wilting

Question 30

Question
the size of the stomata is controlled by the guard cells
Answer
  • True
  • False

Question 31

Question
What does the circulatory system do?
Answer
  • Transport blood around the body
  • Transport substances around the body

Question 32

Question
The heart is an organ that pumps blood around the body and the walls are made from mostly muscle tissue
Answer
  • True
  • False

Question 33

Question
How many chambers does the heart have?
Answer
  • 2
  • 3
  • 4

Question 34

Question
when blood enters the atria they contract to force blood into where?
Answer
  • Vena cava
  • Pulmonary vein
  • ventricles
  • atrium

Question 35

Question
where do ventricles force blood?
Answer
  • Into the heart
  • Out of the heart

Question 36

Question
Where does blood flow through to the organs?
Answer
  • arteries and veins
  • capillaries and veins
  • arteries and capillaries

Question 37

Question
Arteries have thick walls containing muscle and elastic fibres
Answer
  • True
  • False

Question 38

Question
why do veins have thinner walls and valves?
Answer
  • to allow blood to flow faster
  • to prevent backflow of blood
  • to increase blood pressure

Question 39

Question
If arteries begin to narrow and restrict blood flow stents are used to keep them open
Answer
  • True
  • False

Question 40

Question
in organs where does the blood flow through, to get certain substances through their walls?
Answer
  • veins
  • arteries
  • capillaries

Question 41

Question
Facts about blood: (2 facts)
Answer
  • it is a tissue
  • consists of a fluid called plasma
  • Its red
  • platelets are suspended in the cells of blood

Question 42

Question
Blood plasma transports:
Answer
  • CO2 from organs to the lungs
  • CO2 out of the body
  • Urea from the liver to the kidneys
  • Soluble products of digestion from the small intestine to other organs
  • Soluble products of digestion from the large intestine to other organs

Question 43

Question
Red blood cells transport CO2 from the lungs to the organs
Answer
  • True
  • False

Question 44

Question
2 facts about white blood cells:
Answer
  • they have a nucleus
  • they have no nucleus
  • they form part of the body's defence mechanisms
  • carry oxygen

Question 45

Question
what are platelets and do they have a nucleus?
Answer
  • small fragments of a cell and yes
  • large fragments of a cell and yes
  • large fragments of a cell and no
  • Small fragments of a cell and no

Question 46

Question
Platelets help blood clot at the side of a wound
Answer
  • True
  • False

Question 47

Question
What does xylem tissue transport?
Answer
  • Water and mineral ions
  • Nutrients

Question 48

Question
What does phloem tissue transport?
Answer
  • dissolved sugars to the leaves
  • nutrients to the leaves
  • Phloemeliosus

Question 49

Question
the movement of water from the roots through the xylem out of the leaves is called the what?
Answer
  • Diffusion
  • Transpiration stream
  • Osmosis

Question 50

Question
How is carbon dioxide produced?
Answer
  • From trees
  • By respiration
  • Photosynthesis

Question 51

Question
Carbon dioxide is removed from the body by the lungs when we breathe out
Answer
  • True
  • False

Question 52

Question
How is urea produced?
Answer
  • The breakdown of amino acids in the liver
  • The breakdown of amino acids in the kidneys

Question 53

Question
Urea is removed by kidneys in the urine and stored by the bladder
Answer
  • True
  • False

Question 54

Question
A healthy kidney produces urine by: (3 points)
Answer
  • Filtering the blood
  • Reabsorbing urea
  • Reabsorbing dissolved ions, water and sugars
  • Releasing urea
  • Releasing all sugars

Question 55

Question
How can a person be treated with kidney failure?
Answer
  • Dialysis
  • Dieting
  • Kidney transplant
  • Exercising

Question 56

Question
Facts about dialysis: (4 points)
Answer
  • Restores concentration of dissolved substances in blood to normal levels
  • Permeable membrane
  • Partially permeable membrane
  • Dialysis fluid has the same concentration of useful substances as the blood
  • Removes urea from the blood
  • Removes glucose from the blood

Question 57

Question
The donor kidney may be rejected by the immune system unless precautions are taken
Answer
  • True
  • False

Question 58

Question
What are antigens?
Answer
  • Proteins on the surface of cells
  • Proteins on the surface of antibodies
  • Proteins in the blood

Question 59

Question
What two ways can rejection be prevented from a transplant?
Answer
  • Immunosuppressants and excersize
  • Diet and good tissue match
  • Good tissue match and taking immunosuppressants

Question 60

Question
More water is lost when it is cold and more water has to be taken in to balance this loss
Answer
  • True
  • False

Question 61

Question
Sweating helps to cool the body
Answer
  • True
  • False

Question 62

Question
Where is the body temperature controlled?
Answer
  • Skin (touch sensitive cells)
  • The thermoregulatory system
  • The prefrontal cortex

Question 63

Question
If the core body temperature is too high:
Answer
  • Blood vessels dilate
  • Blood vessels constrict
  • More sweat is produced
  • Less sweat is produced

Question 64

Question
If the core body temperature is too low:
Answer
  • Blood vessels dilate
  • Blood vessels constrict
  • Muscles shiver
  • Sweat is produced

Question 65

Question
Where is blood glucose monitored?
Answer
  • Pancreas
  • Liver
  • Kidney

Question 66

Question
The pancreas produces the hormone insulin which allows glucose to move from the blood into cells
Answer
  • True
  • False

Question 67

Question
glucagon is produced in the pancreas when blood glucose levels fall, but what does it do?
Answer
  • causes glucagon to be converted into glucose and this is released into the blood
  • Causes glycogen to be converted into glucose and be released into the blood

Question 68

Question
What are 3 ways type 1 diabetes can be controlled?
Answer
  • Diet
  • Exercise
  • Environment
  • Insulin injections
  • Glucose injections

Question 69

Question
Type 1 diabetes is when someones blood glucose rises too high as their pancreas doesn't produce enough insulin
Answer
  • True
  • False

Question 70

Question
Deforestation leads to ______ in biodiversity
Answer
  • Increase
  • reduction

Question 71

Question
Which gas is released when peat bogs were destroyed?
Answer
  • Carbon dioxide
  • Hydrogen
  • Oxygen

Question 72

Question
Fishing quotas and fish net size are two ways we can reduce the amount of fishing
Answer
  • True
  • False