7269910
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace casi 8 años
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Pregunta 1
Pregunta
From which chamber of the human heart is blood pumped most strongly?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 2
Pregunta
Which of the following is part of a haemoglobin molecule?
Respuesta
-
calcium
-
iron
-
vitamin C
-
vitamin D
Pregunta 3
Pregunta
The diagram shows a human kidney and its blood supply.
Compared with the blood in vessel P, the blood in Q has:
Respuesta
-
less urea and more oxygen.
-
less urea and less oxygen.
-
more urea and less oxygen.
-
more urea and more oxygen.
Pregunta 4
Pregunta
What conditions are needed for a plant to have drooping leaves but not a drooping stem?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 5
Pregunta
The arrows in the diagram show oxygen in the lungs moving from an alveolus into a blood capillary.
By what process does this movement take place?
Respuesta
-
breathing
-
diffusion
-
respiration
-
transpiration
Pregunta 6
Pregunta
The diagram shows a section through the human heart.
What happens to valves X and Y when blood leaves chamber W?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 7
Pregunta
The diagram shows a section through the heart.
Which two blood vessels are arteries?
Respuesta
-
1 and 2
-
2 and 3
-
3 and 4
-
4 and 1
Pregunta 8
Pregunta
Which structures carry blood towards the heart?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 9
Pregunta
In which direction does blood circulate in the body?
Respuesta
-
from the left ventricle through the tricuspid valve
-
from the limbs to the right atrium
-
from the lungs along the pulmonary artery
-
from the right ventricle to the right atrium
Pregunta 10
Pregunta
The diagram shows a section through the heart with blood vessels, seen from the front.
In one circulation of the body, excluding the lungs, in which order does blood flow through the vessels shown?
Respuesta
-
1 → 2 → 4 → 3
-
2 → 3 → 1 → 4
-
3 → 4 → 1 → 2
-
4 → 3 → 1 → 2
Pregunta 11
Pregunta
The diagram shows the heart, liver and kidneys with connecting blood vessels.
What are the labelled blood vessels?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 12
Pregunta
The diagram below shows a leaf palisade cell.
Type in the names of the organelles marked with a dot.
Respuesta
-
nucleas
-
chloroplast
-
vacuole
-
cell wall
-
cytoplasm
Pregunta 13
Pregunta
What is the correct sequence for blood being pumped from the heart to the lungs?
Respuesta
-
left atrium → left ventricle → pulmonary artery
-
left atrium → left ventricle → pulmonary vein
-
right atrium → right ventricle → pulmonary artery
-
right atrium → right ventricle → pulmonary vein
Pregunta 14
Pregunta
Which structures in plants and in humans normally carry amino acids?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 15
Pregunta
Why is the circulatory system of mammals described as a double circulation?
Respuesta
-
Blood flows firstly through arteries and then through veins.
-
Blood flows through the heart twice on one complete circuit of the body.
-
In the heart, blood flows firstly through atria and then through ventricles.
-
The atria and the ventricles contract alternately.
Pregunta 16
Pregunta
What is carried by the xylem?
Respuesta
-
chlorophyll
-
mineral ions
-
starch
-
sugars
Pregunta 17
Pregunta
What are the functions of xylem vessels?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 18
Pregunta
Which substance, needed for protein synthesis, is carried into a leaf from the stem?
Respuesta
-
carbon dioxide
-
nitrate
-
oxygen
-
starch
Pregunta 19
Pregunta
The diagram shows a potted plant and the same plant 24 hours later.
What causes the change in the appearance of the plant?
Respuesta
-
Water loss is greater than water uptake.
-
Water moves from the leaves to the stem.
-
Water uptake is equal to water loss.
-
Water uptake is greater than water loss.
Pregunta 20
Pregunta
Which graph shows most clearly what will happen to the rate of transpiration in a plant as humidity increases?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 21
Pregunta
Which substances are dissolved in human blood plasma?
Respuesta
-
carbon dioxide, haemoglobin and glucose
-
carbon dioxide, oxygen and haemoglobin
-
glucose, hormones and urea
-
oxygen, urea and starch
Pregunta 22
Pregunta
Which chamber of the heart has the thickest muscle wall?
Respuesta
-
left atrium
-
left ventricle
-
right atrium
-
right ventricle
Pregunta 23
Pregunta
What is carried by the xylem in plants?
Respuesta
-
A) chlorophyll
-
B) mineral ions
-
C) starch
-
D) sugars
Pregunta 24
Pregunta
What is the correct sequence for blood being pumped from the heart to the lungs?
Respuesta
-
A) left atrium → left ventricle → pulmonary artery
-
B) left atrium → left ventricle → pulmonary vein
-
C) right atrium → right ventricle → pulmonary artery
-
D) right atrium → right ventricle → pulmonary vein
Pregunta 25
Pregunta
Why is the circulatory system of mammals described as a double circulation?
Respuesta
-
A) Blood flows firstly through arteries and then through veins.
-
B) Blood flows through the heart twice on one complete circuit of the body.
-
C) In the heart, blood flows firstly through atria and then through ventricles.
-
D) The atria and the ventricles contract alternately.
Pregunta 26
Pregunta
The diagram shows a section through a leaf.
Which arrow shows the direction of diffusion of carbon dioxide on a sunny day
Respuesta
-
A
-
B
-
C
-
D
Pregunta 27
Pregunta
Four leafy plant stems were placed into measuring cylinders with 100 cm^3 of water. A layer of oil prevented the water in the measuring cylinder from evaporating.
The plant stems were exposed to different air humidities and temperatures for 48 hours as shown in the table.
The final volume of water in the measuring cylinders is shown for plant stems 1, 3 and 4.
What would be a likely final volume for plant stem 2?
Respuesta
-
A) less than 65 cm^3
-
B) between 65 cm^3 and 75 cm^3
-
C) between 75 cm^3 and 95 cm^3
-
D) greater than 95 cm^3
Pregunta 28
Pregunta
Which blood vessel, if it becomes blocked, could lead directly to a heart attack?
Respuesta
-
A) coronary artery
-
B) pulmonary artery
-
C) pulmonary vein
-
D) vena cava
Pregunta 29
Pregunta
A hospital patient who is feeling unwell is given a blood test. The results of the blood test show a very low level of platelets.
What effect will this have?
Respuesta
-
A) The blood will be unable to transport nutrients, hormones and carbon dioxide.
-
B) The blood will not be able to carry as much oxygen to the tissues as normal.
-
C) There will be a greater risk of bleeding because the blood will take longer to clot.
-
D) There will be a greater risk of infection because the blood cannot make antibodies.
Pregunta 30
Pregunta
Which statement describes transpiration?
Respuesta
-
A) evaporation of water from leaf mesophyll cells
-
B) intake of water from the atmosphere through the stomata
-
C) transport of water through xylem tissue to the leaves
-
D) uptake of water by root hairs in the soil
Pregunta 31
Pregunta
Oxygenated blood returns to the heart from the lungs in vessel X and leaves the heart to circulate
around the body in vessel Y.
What are X and Y?
Respuesta
Pregunta 32
Pregunta
Which is a description of translocation?
Respuesta
-
A) movement of amino acids and sucrose from sink to source
-
B) movement of amino acids and sucrose from source to sink
-
C) movement of water down a water potential gradient
-
D) movement of water up a water potential gradient
Pregunta 33
Pregunta
Active transport is the movement of:
Respuesta
-
A) molecules from a region of their higher concentration to a region of their lower concentration.
-
B) particles from a region of lower concentration to a region of higher concentration using energy from respiration.
-
C) urine by relaxation of a sphincter muscle in the bladder.
-
D) water through a partially permeable membrane from a more dilute to a more concentrated solution.
Pregunta 34
Pregunta
The diagram shows an experiment to demonstrate the movement of molecules.
After one hour, the water in the beaker turned red.
What is the most likely reason for this colour change?
Respuesta
-
A) Molecules of red ink move through the membrane by diffusion.
-
B) Molecules of red ink move through the membrane by osmosis.
-
C) Molecules of water move through the membrane by diffusion
-
D) Molecules of water move through the membrane by osmosis.
Pregunta 35
Pregunta
The diagram shows a potted plant and the same plant 24 hours later.
What causes the change in the appearance of the plant?
Respuesta
-
A) Water loss is greater than water uptake. .
-
B) Water moves from the leaves to the stem.
-
C) Water uptake is equal to water loss.
-
D) Water uptake is greater than water loss
Pregunta 36
Pregunta
The lower end of a plant stem is placed in water coloured with red dye. After three hours, the stem is cut as shown in the diagram.
Which labelled region is stained red?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 37
Pregunta
In which order does water pass through the cells of a plant, as the water travels from the roots to a leaf?
Respuesta
-
A) mesophyll cells → root hair → root cortex → xylem
-
B) root cortex → root hair → xylem → mesophyll cells
-
C) root hair → mesophyll cells → root cortex → xylem
-
D) root hair → root cortex → xylem → mesophyll cells
Pregunta 38
Pregunta
The diagram shows a cross-section through a plant root.
Q shows the part that is stained red when the root is placed in water containing a red dye.
What is found at Q?
Respuesta
-
A) guard cells
-
B) palisade cells
-
C) phloem
-
D) xylem
Pregunta 39
Pregunta
A decrease in which factor normally causes transpiration rate to increase?
Respuesta
-
A) humidity
-
B) light intensity
-
C) stomatal opening
-
D) temperature
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