Quiz
GCSE AQA Biology Unit 3
Perguntas do quiz (72)
1dissolved substances move by active transport and diffusion
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2how does water move across boundaries
- Adiffusion
- Bactive transport
- Cosmosis
3osmosis is from an area of...
- Alow concentration (dilute) to high concentration (concentrated)
- Bhigh concentration to low
4the membrane in osmosis is semi permeable
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5what causes the water to move In or out of the cell?
- ADifference in substance
- BDifference in concentration
- CDifference in energy
6what do most soft drinks contain? (3 answers)
- Awater
- Bair
- Ccarbon dioxide
- Dsugar
- Eions
7why do sports drinks contain sugars?
- Aso they can run faster and further
- Bto replace sugar used in energy release during the activity
8if water ions aren't replaced the ion/water balance of the body is disturbed so cells don't work efficiently.
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9why do sports drinks contain water?
- Ato provide them with more energy
- Bto replace water lost when sweating
10which process of exchanging materials requires energy?
- AOsmosis
- BActive transport
11Facts about active transport: (3 answers)
- ASubstances absorbed with the concentration gradient
- Bsubstances absorbed against the concentration gradient
- Cuses energy from respiration
- Ddoesn't require energy
- Eallows cells to absorb ions from very dilute solutions
12How can you increase the efficiency of an exchange surface?
- Ahave a lower surface area
- Bhave a high surface area
- Cbeing thin
- Dhaving a long diffusion path
- E(In animals) having a good blood supply
- Fbeing well ventilated (also only in animals)
13why are exchange surfaces adapted in humans?
- ATo increase effectiveness
- Bto make sure things don't diffuse too fast
14the size and complexity of an organism increases the difficulty of exchanging materials
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15what is the surface area of the lungs increased by?
- Aalveoli
- Bvilli
16what is the surface area of the small intestine increased by?
- Aalveoli
- Bvilli
17villi have an extensive network of capillaries to absorb products from digestion by active transport and diffusion
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18facts about the lungs: (4 answers)
- Aprotected by the ribs
- Bbelow the diaphragm
- Cabove the diaphragm
- Ddiaphragm separates it from the thorax (the upper part of the body)
- Ediaphragm separates it from the abdomen (lower part of the body)
- Fin the upper part of the body
19why does the breathing system take air into and out of the body?
- Aso oxygen from the air can diffuse into the bloodstream and carbon dioxide can diffuse out into the air
- Bso carbon dioxide from the air can diffuse into the bloodstream and oxygen can diffuse out into the air
20what happens to make air move into the lungs, find the wrong answer?
- Aribcage moves up and out
- Bribcage move down and in
- Cdiaphragm becomes flatter
- Dintercostal muscles contract as well as the diaphragm
21the movement of air into and out of the lungs is known as what?
- Abreathing
- Brespiration
- Cventilation
22carbon dioxide enters leaves by diffusion
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23where are most of the water and mineral ions absorbed?
- Athe leaves from the air
- Bthe roots from the soil
24how is the surface area of the roots increased?
- Aby root hairs
- Bby thin walls
25how are leaves surface area increased?
- Aby their flattened shape
- Binternal air spaces
- Cguard cells
- Dbeing green
26plants have stomata to get CO2 from the atmosphere and to remove/release oxygen produced in photosynthesis
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27where do plant mainly lose water vapour?
- Astem
- Bleaves through the stomata
- Croot systems
28where is evaporation more rapid
- Ahot dry windy conditions
- Bcold wet and still conditions
29if plants lose water faster than it is replaced what happens?
- Astomata close to prevent wilting
- Bstomata open to induce wilting
30the size of the stomata is controlled by the guard cells
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31What does the circulatory system do?
- ATransport blood around the body
- BTransport substances around the body
32The heart is an organ that pumps blood around the body and the walls are made from mostly muscle tissue
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33How many chambers does the heart have?
- A2
- B3
- C4
34when blood enters the atria they contract to force blood into where?
- AVena cava
- BPulmonary vein
- Cventricles
- Datrium
35where do ventricles force blood?
- AInto the heart
- BOut of the heart
36Where does blood flow through to the organs?
- Aarteries and veins
- Bcapillaries and veins
- Carteries and capillaries
37Arteries have thick walls containing muscle and elastic fibres
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38why do veins have thinner walls and valves?
- Ato allow blood to flow faster
- Bto prevent backflow of blood
- Cto increase blood pressure
39If arteries begin to narrow and restrict blood flow stents are used to keep them open
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40in organs where does the blood flow through, to get certain substances through their walls?
- Aveins
- Barteries
- Ccapillaries
41Facts about blood: (2 facts)
- Ait is a tissue
- Bconsists of a fluid called plasma
- CIts red
- Dplatelets are suspended in the cells of blood
42Blood plasma transports:
- ACO2 from organs to the lungs
- BCO2 out of the body
- CUrea from the liver to the kidneys
- DSoluble products of digestion from the small intestine to other organs
- ESoluble products of digestion from the large intestine to other organs
43Red blood cells transport CO2 from the lungs to the organs
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442 facts about white blood cells:
- Athey have a nucleus
- Bthey have no nucleus
- Cthey form part of the body's defence mechanisms
- Dcarry oxygen
45what are platelets and do they have a nucleus?
- Asmall fragments of a cell and yes
- Blarge fragments of a cell and yes
- Clarge fragments of a cell and no
- DSmall fragments of a cell and no
46Platelets help blood clot at the side of a wound
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47What does xylem tissue transport?
- AWater and mineral ions
- BNutrients
48What does phloem tissue transport?
- Adissolved sugars to the leaves
- Bnutrients to the leaves
- CPhloemeliosus
49the movement of water from the roots through the xylem out of the leaves is called the what?
- ADiffusion
- BTranspiration stream
- COsmosis
50How is carbon dioxide produced?
- AFrom trees
- BBy respiration
- CPhotosynthesis
51Carbon dioxide is removed from the body by the lungs when we breathe out
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52How is urea produced?
- AThe breakdown of amino acids in the liver
- BThe breakdown of amino acids in the kidneys
53Urea is removed by kidneys in the urine and stored by the bladder
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54A healthy kidney produces urine by: (3 points)
- AFiltering the blood
- BReabsorbing urea
- CReabsorbing dissolved ions, water and sugars
- DReleasing urea
- EReleasing all sugars
55How can a person be treated with kidney failure?
- ADialysis
- BDieting
- C Kidney transplant
- DExercising
56Facts about dialysis: (4 points)
- ARestores concentration of dissolved substances in blood to normal levels
- BPermeable membrane
- CPartially permeable membrane
- DDialysis fluid has the same concentration of useful substances as the blood
- ERemoves urea from the blood
- FRemoves glucose from the blood
57The donor kidney may be rejected by the immune system unless precautions are taken
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58What are antigens?
- AProteins on the surface of cells
- BProteins on the surface of antibodies
- CProteins in the blood
59What two ways can rejection be prevented from a transplant?
- AImmunosuppressants and excersize
- BDiet and good tissue match
- CGood tissue match and taking immunosuppressants
60More water is lost when it is cold and more water has to be taken in to balance this loss
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61Sweating helps to cool the body
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62Where is the body temperature controlled?
- ASkin (touch sensitive cells)
- BThe thermoregulatory system
- CThe prefrontal cortex
63If the core body temperature is too high:
- ABlood vessels dilate
- BBlood vessels constrict
- CMore sweat is produced
- DLess sweat is produced
64If the core body temperature is too low:
- ABlood vessels dilate
- BBlood vessels constrict
- CMuscles shiver
- DSweat is produced
65Where is blood glucose monitored?
- APancreas
- BLiver
- CKidney
66The pancreas produces the hormone insulin which allows glucose to move from the blood into cells
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67glucagon is produced in the pancreas when blood glucose levels fall, but what does it do?
- Acauses glucagon to be converted into glucose and this is released into the blood
- BCauses glycogen to be converted into glucose and be released into the blood
68What are 3 ways type 1 diabetes can be controlled?
- ADiet
- BExercise
- CEnvironment
- DInsulin injections
- EGlucose injections
69Type 1 diabetes is when someones blood glucose rises too high as their pancreas doesn't produce enough insulin
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70Deforestation leads to ______ in biodiversity
- AIncrease
- Breduction
71Which gas is released when peat bogs were destroyed?
- ACarbon dioxide
- BHydrogen
- COxygen
72Fishing quotas and fish net size are two ways we can reduce the amount of fishing
- AVerdadeiro
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Informações
- Descrição
- Questions on the whole unit 3 Biology specification!
- Autor
- Gabi Germain
- Idioma
- English
- Visualizações
- 446
- Etiquetas
- Avaliação
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