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Course: Alhussan Biology — Stage 9
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Alhussan Biology — Stage 9

Chapter 9: Plants and Photosynthesis

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Chapter 10: Excretion in Humans

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Chapter 11: Human Genetics and Development

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Chapter 12: The Carbon Cycle and Climate Change

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Chapter 13: Variation and Natural Selection

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Quiz

Biology 10.1 What is excretion? — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Urea rose from 5 to 10 units after a meal. Calculate the percentage increase.
50%
5%
100%
200%
2.
Waste removed by different organs per day. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
3.
Which term matches this definition? “Liquid containing urea, water and salts.”
Ultrafiltration
Dialysis
Urine
Urethra
4.
Which statement is NOT correct?
Urea is carried to the kidneys in blood plasma.
An adult passes 15 L of urine a day.
Excretion is a characteristic of all living organisms.
A lion eating lots of protein makes a lot of urea.
5.
Which term matches this definition? “Removal of undigested food as faeces.”
ADH
Concentrated urine
Egestion
Faeces
6.
Urea excreted per day on different diets. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
7.
Which is the correct definition of “Excretion”?
Liquid containing urea, water and salts.
Removal of the waste products of metabolism.
Control of water and salt in the body.
Carries blood with less urea from the kidney.
8.
A person makes 20 g of urea a day. How much in 10 days?
2 g
30 g
200 g
10 g
9.
Where is urea made?
Kidney
Bladder
Lungs
Liver
10.
A person makes 20 g of urea a day. How much in 30 days?
6000 g
30 g
50 g
600 g
11.
Urea in blood after a high-protein meal. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 3
A
B
C
D
12.
Protein eaten and urea made by a group of students. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
13.
Urea rose from 4 to 11 units after a meal. Calculate the percentage increase.
275%
175%
64%
7%
14.
A person makes 25 g of urea a day. How much in 7 days?
32 g
7 g
4 g
175 g
15.
Waste removed by different organs per day. About how many times bigger is Kidneys than Lungs?
Dr Dabour Hub Academy - figure 5
7.2
2.4
4.8
9.5
16.
An adult passes 1.5 L of urine a day containing 25 g of urea. What is the urea concentration in g per litre?
23.5 g/L
16.7 g/L
0.1 g/L
37.5 g/L
17.
Urea in blood after a high-protein meal. At what value of "Time after meal (h)" is "Blood urea (units)" greatest?
Dr Dabour Hub Academy - figure 6
3
1
8
6
18.
Urea excreted per day on different diets. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
19.
Urea in blood after a high-protein meal. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
20.
Which term matches this definition? “Organ where urea is made.”
Tubule
Metabolism
Osmosis
Liver
21.
An adult passes 1.5 L of urine with 25 g of urea. What is the urea concentration?
23.5 g/L
0.1 g/L
37.5 g/L
16.7 g/L
22.
Urea in blood after a high-protein meal. At what value of "Time after meal (h)" is "Blood urea (units)" smallest?
Dr Dabour Hub Academy - figure 9
8
4
0
1
23.
A person makes 30 g of urea a day. How much in 10 days?
3 g
300 g
10 g
40 g
24.
Urea excreted per day on different diets. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
25.
Which statement is correct?
Urea is insoluble.
Removing faeces is excretion.
An adult passes 15 L of urine a day.
Urea is carried to the kidneys in blood plasma.
26.
Urea excreted per day on different diets. What is the value for Medium protein?
Dr Dabour Hub Academy - figure 11
32
13
52
51
27.
Protein eaten and urea made by a group of students. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 12
A
B
C
D
28.
A person makes 20 g of urea a day. How much in 7 days?
27 g
7 g
3 g
140 g
29.
Urea in blood after a high-protein meal. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
30.
Which statement is NOT correct?
Plant fibre is passed out in faeces.
Urine is yellow because of urea.
The yellow colour of urine comes from other substances.
A kidney is about 10 cm long.
31.
Which term matches this definition? “Removal of the waste products of metabolism.”
Ultrafiltration
Filtrate
Kidney
Excretion
32.
Urea excreted per day on different diets. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 14
A
B
C
D
33.
Which is the correct definition of “Kidney”?
Selective uptake of useful substances back into blood.
Organ that removes urea from blood.
Part of the nephron where reabsorption happens.
Difference that drives diffusion of urea.
34.
Which is the correct definition of “Amino acid”?
Building block of protein.
Small molecules forced out of blood under high pressure.
Control of water and salt in the body.
Desert mammal that makes thick, syrupy urine.
35.
An adult passes 2 L of urine with 30 g of urea. What is the urea concentration?
28.0 g/L
15.0 g/L
60.0 g/L
0.1 g/L
36.
Protein eaten and urea made by a group of students. What is the value of "Urea made (g/day)" when "Protein eaten (g/day)" is 100?
Dr Dabour Hub Academy - figure 15
22
41
29
45
37.
Which statement is correct?
A kidney is about 10 cm long.
Urea is insoluble.
Lions make little urea.
Excess amino acids are stored in the body.
38.
Urea in blood after a high-protein meal. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 16
A
B
C
D
39.
Which term matches this definition? “Waste made in the liver from excess amino acids.”
Pituitary gland
Urea
Reabsorption
Concentration gradient
40.
Urea in blood after a high-protein meal. What is the value of "Blood urea (units)" when "Time after meal (h)" is 1?
Dr Dabour Hub Academy - figure 17
6
11
9
12
41.
The amino group is turned into ____.
oxygen
urea
fat
glucose
42.
Urea forms ____ crystals.
red
white
green
black
43.
The yellow colour of urine comes from other ____.
substances
blood cells
urea crystals
bones
44.
Faeces were never absorbed into the ____.
stomach
mouth
gut
blood
45.
The carbon part is used in respiration or turned into carbohydrate or ____.
DNA
urea
bone
fat
46.
True or false? Urea is carried to the kidneys in blood plasma.
True
False
47.
True or false? Carbon dioxide makes blood alkaline.
True
False
48.
True or false? Faeces were never absorbed into the blood.
True
False
49.
True or false? Plant fibre is passed out in faeces.
True
False
50.
True or false? Excretion is a characteristic of all living organisms.
True
False
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Part of Chapter 10: Excretion in Humans — see every lesson and quiz in this unit.
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