2440856
Descripción
Test por Gabi Germain, actualizado hace más de 1 año
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Creado por Gabi Germain
hace alrededor de 9 años
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Pregunta 1
Pregunta
dissolved substances move by active transport and diffusion
Respuesta
- True
- False
Pregunta 2
Pregunta
how does water move across boundaries
Respuesta
-
diffusion
-
active transport
-
osmosis
Pregunta 3
Pregunta
osmosis is from an area of...
Respuesta
-
low concentration (dilute) to high concentration (concentrated)
-
high concentration to low
Pregunta 4
Pregunta
the membrane in osmosis is semi permeable
Respuesta
- True
- False
Pregunta 5
Pregunta
what causes the water to move In or out of the cell?
Respuesta
-
Difference in substance
-
Difference in concentration
-
Difference in energy
Pregunta 6
Pregunta
what do most soft drinks contain? (3 answers)
Respuesta
-
water
-
air
-
carbon dioxide
-
sugar
-
ions
Pregunta 7
Pregunta
why do sports drinks contain sugars?
Respuesta
-
so they can run faster and further
-
to replace sugar used in energy release during the activity
Pregunta 8
Pregunta
if water ions aren't replaced the ion/water balance of the body is disturbed so cells don't work efficiently.
Respuesta
- True
- False
Pregunta 9
Pregunta
why do sports drinks contain water?
Respuesta
-
to provide them with more energy
-
to replace water lost when sweating
Pregunta 10
Pregunta
which process of exchanging materials requires energy?
Respuesta
-
Osmosis
-
Active transport
Pregunta 11
Pregunta
Facts about active transport: (3 answers)
Respuesta
-
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
Pregunta 12
Pregunta
How can you increase the efficiency of an exchange surface?
Respuesta
-
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)
Pregunta 13
Pregunta
why are exchange surfaces adapted in humans?
Respuesta
-
To increase effectiveness
-
to make sure things don't diffuse too fast
Pregunta 14
Pregunta
the size and complexity of an organism increases the difficulty of exchanging materials
Respuesta
- True
- False
Pregunta 15
Pregunta
what is the surface area of the lungs increased by?
Respuesta
-
alveoli
-
villi
Pregunta 16
Pregunta
what is the surface area of the small intestine increased by?
Respuesta
-
alveoli
-
villi
Pregunta 17
Pregunta
villi have an extensive network of capillaries to absorb products from digestion by active transport and diffusion
Respuesta
- True
- False
Pregunta 18
Pregunta
facts about the lungs: (4 answers)
Respuesta
-
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
Pregunta 19
Pregunta
why does the breathing system take air into and out of the body?
Respuesta
-
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
Pregunta 20
Pregunta
what happens to make air move into the lungs, find the wrong answer?
Respuesta
-
ribcage moves up and out
-
ribcage move down and in
-
diaphragm becomes flatter
-
intercostal muscles contract as well as the diaphragm
Pregunta 21
Pregunta
the movement of air into and out of the lungs is known as what?
Respuesta
-
breathing
-
respiration
-
ventilation
Pregunta 22
Pregunta
carbon dioxide enters leaves by diffusion
Respuesta
- True
- False
Pregunta 23
Pregunta
where are most of the water and mineral ions absorbed?
Respuesta
-
the leaves from the air
-
the roots from the soil
Pregunta 24
Pregunta
how is the surface area of the roots increased?
Respuesta
-
by root hairs
-
by thin walls
Pregunta 25
Pregunta
how are leaves surface area increased?
Respuesta
-
by their flattened shape
-
internal air spaces
-
guard cells
-
being green
Pregunta 26
Pregunta
plants have stomata to get CO2 from the atmosphere and to remove/release oxygen produced in photosynthesis
Respuesta
- True
- False
Pregunta 27
Pregunta
where do plant mainly lose water vapour?
Respuesta
-
stem
-
leaves through the stomata
-
root systems
Pregunta 28
Pregunta
where is evaporation more rapid
Respuesta
-
hot dry windy conditions
-
cold wet and still conditions
Pregunta 29
Pregunta
if plants lose water faster than it is replaced what happens?
Respuesta
-
stomata close to prevent wilting
-
stomata open to induce wilting
Pregunta 30
Pregunta
the size of the stomata is controlled by the guard cells
Respuesta
- True
- False
Pregunta 31
Pregunta
What does the circulatory system do?
Respuesta
-
Transport blood around the body
-
Transport substances around the body
Pregunta 32
Pregunta
The heart is an organ that pumps blood around the body and the walls are made from mostly muscle tissue
Respuesta
- True
- False
Pregunta 33
Pregunta
How many chambers does the heart have?
Respuesta
-
2
-
3
-
4
Pregunta 34
Pregunta
when blood enters the atria they contract to force blood into where?
Respuesta
-
Vena cava
-
Pulmonary vein
-
ventricles
-
atrium
Pregunta 35
Pregunta
where do ventricles force blood?
Respuesta
-
Into the heart
-
Out of the heart
Pregunta 36
Pregunta
Where does blood flow through to the organs?
Respuesta
-
arteries and veins
-
capillaries and veins
-
arteries and capillaries
Pregunta 37
Pregunta
Arteries have thick walls containing muscle and elastic fibres
Respuesta
- True
- False
Pregunta 38
Pregunta
why do veins have thinner walls and valves?
Respuesta
-
to allow blood to flow faster
-
to prevent backflow of blood
-
to increase blood pressure
Pregunta 39
Pregunta
If arteries begin to narrow and restrict blood flow stents are used to keep them open
Respuesta
- True
- False
Pregunta 40
Pregunta
in organs where does the blood flow through, to get certain substances through their walls?
Respuesta
-
veins
-
arteries
-
capillaries
Pregunta 41
Pregunta
Facts about blood: (2 facts)
Respuesta
-
it is a tissue
-
consists of a fluid called plasma
-
Its red
-
platelets are suspended in the cells of blood
Pregunta 42
Pregunta
Blood plasma transports:
Respuesta
-
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
Pregunta 43
Pregunta
Red blood cells transport CO2 from the lungs to the organs
Respuesta
- True
- False
Pregunta 44
Pregunta
2 facts about white blood cells:
Respuesta
-
they have a nucleus
-
they have no nucleus
-
they form part of the body's defence mechanisms
-
carry oxygen
Pregunta 45
Pregunta
what are platelets and do they have a nucleus?
Respuesta
-
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
Pregunta 46
Pregunta
Platelets help blood clot at the side of a wound
Respuesta
- True
- False
Pregunta 47
Pregunta
What does xylem tissue transport?
Respuesta
-
Water and mineral ions
-
Nutrients
Pregunta 48
Pregunta
What does phloem tissue transport?
Respuesta
-
dissolved sugars to the leaves
-
nutrients to the leaves
-
Phloemeliosus
Pregunta 49
Pregunta
the movement of water from the roots through the xylem out of the leaves is called the what?
Respuesta
-
Diffusion
-
Transpiration stream
-
Osmosis
Pregunta 50
Pregunta
How is carbon dioxide produced?
Respuesta
-
From trees
-
By respiration
-
Photosynthesis
Pregunta 51
Pregunta
Carbon dioxide is removed from the body by the lungs when we breathe out
Respuesta
- True
- False
Pregunta 52
Pregunta
How is urea produced?
Respuesta
-
The breakdown of amino acids in the liver
-
The breakdown of amino acids in the kidneys
Pregunta 53
Pregunta
Urea is removed by kidneys in the urine and stored by the bladder
Respuesta
- True
- False
Pregunta 54
Pregunta
A healthy kidney produces urine by: (3 points)
Respuesta
-
Filtering the blood
-
Reabsorbing urea
-
Reabsorbing dissolved ions, water and sugars
-
Releasing urea
-
Releasing all sugars
Pregunta 55
Pregunta
How can a person be treated with kidney failure?
Respuesta
-
Dialysis
-
Dieting
-
Kidney transplant
-
Exercising
Pregunta 56
Pregunta
Facts about dialysis: (4 points)
Respuesta
-
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
Pregunta 57
Pregunta
The donor kidney may be rejected by the immune system unless precautions are taken
Respuesta
- True
- False
Pregunta 58
Pregunta
What are antigens?
Respuesta
-
Proteins on the surface of cells
-
Proteins on the surface of antibodies
-
Proteins in the blood
Pregunta 59
Pregunta
What two ways can rejection be prevented from a transplant?
Respuesta
-
Immunosuppressants and excersize
-
Diet and good tissue match
-
Good tissue match and taking immunosuppressants
Pregunta 60
Pregunta
More water is lost when it is cold and more water has to be taken in to balance this loss
Respuesta
- True
- False
Pregunta 61
Pregunta
Sweating helps to cool the body
Respuesta
- True
- False
Pregunta 62
Pregunta
Where is the body temperature controlled?
Respuesta
-
Skin (touch sensitive cells)
-
The thermoregulatory system
-
The prefrontal cortex
Pregunta 63
Pregunta
If the core body temperature is too high:
Respuesta
-
Blood vessels dilate
-
Blood vessels constrict
-
More sweat is produced
-
Less sweat is produced
Pregunta 64
Pregunta
If the core body temperature is too low:
Respuesta
-
Blood vessels dilate
-
Blood vessels constrict
-
Muscles shiver
-
Sweat is produced
Pregunta 65
Pregunta
Where is blood glucose monitored?
Respuesta
-
Pancreas
-
Liver
-
Kidney
Pregunta 66
Pregunta
The pancreas produces the hormone insulin which allows glucose to move from the blood into cells
Respuesta
- True
- False
Pregunta 67
Pregunta
glucagon is produced in the pancreas when blood glucose levels fall, but what does it do?
Respuesta
-
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
Pregunta 68
Pregunta
What are 3 ways type 1 diabetes can be controlled?
Respuesta
-
Diet
-
Exercise
-
Environment
-
Insulin injections
-
Glucose injections
Pregunta 69
Pregunta
Type 1 diabetes is when someones blood glucose rises too high as their pancreas doesn't produce enough insulin
Respuesta
- True
- False
Pregunta 70
Pregunta
Deforestation leads to ______ in biodiversity
Respuesta
-
Increase
-
reduction
Pregunta 71
Pregunta
Which gas is released when peat bogs were destroyed?
Respuesta
-
Carbon dioxide
-
Hydrogen
-
Oxygen
Pregunta 72
Pregunta
Fishing quotas and fish net size are two ways we can reduce the amount of fishing
Respuesta
- True
- False
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