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GCSE Biology Unit 3
Where is urea produced?
What does haemoglobin do?
GCSE Biology Unit 3
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Quiz for AQA GCSE Biology Unit 3.
Flashcards
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Questions
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Answers
1
What does haemoglobin do?
carry CO2 from tissue to lungs
carry oxygen from lungs to tissue
carry oxygen from tissue to lungs
carry CO2 from lungs to tissue
2
Where is urea produced?
stomach
pancreas
kidneys
liver
3
What do ions do in the body?
make us into charged particles
keep muscles healthy
get rid of creases in clothes
make us sweat
4
Which blood vessel carries both oxygenated and deoxygenated blood?
capillaries
arteries
veins
5
Biodiversity is...
the range of different species in a habitat
the range of different animals in a habitat
the range of different plants in a habitat
the range of different squirrels in a habitat
6
What acts as a food source in the production of mycoprotein?
glucose syrup
ammonia
cough syrup
oxygen
7
Normal glucose level in the human blood is...
73mg per 100cm cubed
74mg per 100cm cubed
72mg per 100cm cubed
71mg per 100cm cubed
8
Why is filtered air added in the production of mycoprotein?
to provide oxygen
to provide CO2
to provide glucose
to provide ammonia (nitrogen)
9
How do the fungal cells respire?
aerobically
anaerobically
10
The movement of particles from a low to a high concentration which requires energy is...
respiration
active transport
diffusion
osmosis
11
Excretion is...
removing CO2
removing waste
removing water
removing toxins
12
Give a feature of a good exchange surface
lots of particles to create energy
thin surface so shorter diffusion distance
good blood supply to maintain concentration gradient
large surface area for diffusion
13
Blood returns to the heart through...
veins
arteries
14
Any temperature above 35 degrees is...
hypothermia
hyperthermia
15
Name one greenhouse gas
ethane
butane
methane
propane
16
How does the hypothalamus control body temperature?
monitors blood temperature flowing through the brain
nerves in the skin detect skin temperature and send messages
17
Which part of the heart is thickest?
left atrium
right ventricle
right atrium
left ventricle
18
Which blood vessel has the highest pressure?
veins
arteries
capillaries
19
Which mushroom makes mycoprotein?
quark
fusarium
futarium
quorn
20
What does plasma do in the bloodstream?
transports oxygen
helps blood to clot at the site of a cut
transports CO2
transports urea
21
Disadvantage of a transplant?
cheaper
lack of donors
long term solution
rejection
22
Sustainability is...
the use of resources without considering the environment
the use of resources without harming the environment
the use of resources while harming the environment
the use of resources without damaging the environment
23
How is the population increase putting strain on global environment?
aren't enough houses for everyone
more waste and pollution is being created
raw materials are used rapidly
non-renewable energy sources are running out
24
Name one factor that can affect the rate of transpiration
humidity
wind
temperature
light
25
Which region of the brain controls the body temperature?
pituitary gland
hippopotamus
homestasis
hypothalamus
26
Give one main function of blood
regulation - maintains body temperature
protection - from infection and blood loss
transport - carries substances & cells around the body
defense - fights infections
27
Advantage of dialysis?
allows kidneys to recover
effective waste removal
expensive
treatment time reduces quality of life
28
Treatment of diabetes?
regular health checks on eyesight and circulation
monitor blood glucose levels
diet control and exercise
inject insulin after every meal
29
In the double circulatory system to blood enters the...
left ventricle
left atrium
right ventricle
right atrium
30
Give one effect of global warming
global temperature will rise
biodiversity will reduce
ice caps will melt - increased sea levels
migration patterns change
31
An example of sustainability is...
handling waste correctly to avoid pollution
burning fossil fuels
avoiding overuse of resources e.g. fishing quotas
replacing resources where possible e.g. planting trees
32
Vasoconstriction is when blood vessels...
constrict so less blood is directed through them
dilate so more blood is directed through them
33
Which is the unit for the amount of energy transferred?
APT
ATP
TAP
PTA
34
What is measured in the fermenter?
temperature
pH
oxygen levels
time
35
Osmosis is the movement of...
water particles from a high to a low concentration
water particles from a low to a high concentration
particles from a low to a high concentration
particles from a high to a low concentration
36
How are useful molecules (e.g glucose, ions) reabsorbed?
osmosis
respiration
diffusion
active transport
37
Platelets are...
small fragments of blood
large fragments of blood
small fragments of cells
large fragments of cells
38
If blood glucose is too low...
glucose converted to glycogen
glucagon released from pancreas
insulin released from the pancreas
glycogen converted to glucose
39
What do platelets do in the bloodstream?
transport urea
transport CO2
transport oxygen
help blood to clot at the site of a cut
40
Cells make up __% of the blood
45
65
55
41
When you overheat...
hairs relax allow air currents closer to the skin
hairs rise to stop air currents getting near the skin
muscles contract and you shiver
sweat glands make sweat and deposit on skin surface
42
What happens when you inhale?
diaphragm contracts, ribs move down and in
diaphragm relaxes, ribs move up and out
diaphragm relaxes, ribs move down and in
diaphragm contracts, ribs move up and out
43
When you overcool...
sweat glands make sweat and deposit on skin surface
muscles contract and you shiver
hairs rise to stop air currents getting near the skin
hairs relax allow air currents closer to the skin
44
Disadvantages of an artificial heart?
has a limited lifespan
you could die spontaneously
risk of infection
it's uncomfortable
45
Transpiration is the movement of...
particles from the leaves to the roots
water from the roots to the leaves
particles from the roots to the leaves
water from the leaves to the roots
46
The scientific name for controlling body temperature is...
homeostasis
thermoregulation
hypothalamus
hemostasis
47
Any temperature below 35 degrees is...
hyperthermia
hypothermia
48
What happens when CO2 builds up?
damages red blood cells
damages proteins in cells
highers pH
lowers pH
49
Symptoms of diabetes?
constipation
frequent urinating
thirst
hunger
50
Vasodilation is when blood vessels...
dilate so more blood is directed through them
constrict so less blood is directed through them
51
This percentage is made up of...
water
platelets
red blood cells
white blood cells
52
Which blood vessel has the largest lumen?
vein
artery
capillary
53
In the kidneys, where are glucose, ions and water removed?
zone of filtration
ultrafiltration
zone of reabsorbtion
54
What does a potometer measure?
rate of transpiration
rate of reaction
rate of respiration
metabolic rate
55
If blood glucose is too high...
glycogen converted to glucose
glucose converted to glycogen
insulin released from the pancreas
glucagon released from pancreas
56
Which piece of equipment is this?
potometer
potatometer
potameter
potemeter
57
Which blood vessels have valves?
veins
capillaries
arteries
58
Name one cause of diabetes
trauma
drugs
genetics
virus
59
Formula for respiration in plants?
oxygen + water -> CO2 + glucose
oxygen + glucose -> CO2 + water
CO2 + water -> oxygen + glucose
water + glucose -> CO2 + oxygen
60
Why would someone have protein in their urine?
pancreatic problems
kidney problems
stomach problems
liver problems
61
What is glucose needed for?
to conserve energy during respiration
to release energy during respiration
to conserve energy during breathing
to release energy during breathing
62
Why is caffeine added to sports drinks?
to make us more alert
it's cheap
to wake us up
to make us go to sleep
63
Why do veins have valves?
to prevent backflow
to prevent cholesterol
to prevent pooling
64
Which gas causes acid rain?
sulfur dioxide
carbon monoxide
carbon dioxide
sulfur monoxide
65
Blood flows from the heart to the organs through...
veins
arteries
66
Transpiration is driven by...
the respiration of water from the leaves
the condensation of water from the leaves
the evaporation of water from the leaves
67
How is biogas made?
anaerobic respiration of carbohydrates in plants and sewage
aerobic respiration of carbohydrates in plants and sewage
68
Urea is...
alkaline
acid
69
Advantages of an artificial heart?
allows you to live longer
you don't have feelings
you don't have to wait for a donor
it's uncomfortable
70
How long before the fermenter is drained of mycoprotein and sterilised?
7 weeks
6 weeks
8 weeks
5 weeks
