About this Study Set
This study set covers Human Biology through
25 practice questions.
A collection of multiple-choice questions focusing on biological measurements, historical discoveries, and human anatomy figures. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 25 questions from the
Human Biology Quantitative Facts study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
In what year did James Watson and Francis Crick publish their discovery of the double helix structure of DNA?
-
A
1951
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B
1953
-
C
1955
-
D
1957
2
How many pairs of cranial nerves are present in the human peripheral nervous system?
3
What is the average pH value of human arterial blood?
4
How many bones are found in the adult human axial skeleton?
5
The average volume of blood in an adult human male is approximately how many litres?
-
A
3-4 litres
-
B
5-6 litres
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C
7-8 litres
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D
9-10 litres
6
Which scientist is credited with discovering the ABO blood group system in 1901?
-
A
Louis Pasteur
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B
Karl Landsteiner
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C
Robert Koch
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D
Paul Ehrlich
7
How many chambers are located within the human heart?
8
The human adult small intestine typically measures approximately how many metres in length?
-
A
3 metres
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B
6 metres
-
C
9 metres
-
D
12 metres
9
Approximately what percentage of the human body weight is composed of water in an average adult?
10
In which year did the Human Genome Project officially begin?
-
A
1980
-
B
1990
-
C
1995
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D
2000
11
How many primary teeth (deciduous teeth) does a typical human child develop?
12
What is the approximate number of individual nephrons found in a single healthy human kidney?
-
A
10,000
-
B
100,000
-
C
1,000,000
-
D
10,000,000
13
How many cervical vertebrae are located in the human spinal column?
14
The protein insulin is produced by which specific cells in the pancreas?
-
A
Alpha cells
-
B
Beta cells
-
C
Delta cells
-
D
Gamma cells
15
What is the normal resting heart rate for a healthy adult, measured in beats per minute?
-
A
40-50
-
B
60-100
-
C
110-130
-
D
140-160
16
How many chromosomes are typically contained in a normal human somatic cell?
17
The human eye contains approximately how many rod cells responsible for low-light vision?
-
A
12 million
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B
60 million
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C
120 million
-
D
200 million
18
What is the standard length of a human pregnancy, measured in weeks from the last menstrual period?
-
A
36 weeks
-
B
40 weeks
-
C
42 weeks
-
D
44 weeks
19
How many muscles are responsible for the movement of the human eyeball?
20
In 1628, which English physician published the work 'De Motu Cordis', describing the circulation of blood?
-
A
William Harvey
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B
Andreas Vesalius
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C
Galen
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D
Hippocrates
21
What is the estimated number of scent receptors in the human nose?
-
A
1 million
-
B
10 million
-
C
50 million
-
D
100 million
22
The human liver is typically divided into how many anatomical lobes?
23
Approximately how many breaths does a healthy adult take per minute at rest?
-
A
8-12
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B
12-20
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C
22-30
-
D
32-40
24
How many pairs of ribs are found in the human ribcage?
25
What is the approximate weight of an average adult human brain, in grams?
-
A
800g
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B
1300g
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C
1800g
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D
2300g
