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