About this Study Set
This study set covers Human Biology through
25 practice questions.
A collection of knowledge-based questions focusing on historical dates, anatomical measurements, and scientific constants in human biology. 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
How many pairs of chromosomes are typically found in a normal human somatic cell?
2
In which year was the first draft of the Human Genome Project officially announced?
-
A
1990
-
B
1995
-
C
2000
-
D
2003
3
What is the approximate number of bones in a fully developed adult human skeleton?
4
The human heart typically beats approximately how many times per day?
-
A
50,000
-
B
75,000
-
C
100,000
-
D
150,000
5
Who is credited with discovering the ABO blood group system in 1901?
-
A
Karl Landsteiner
-
B
Louis Pasteur
-
C
Robert Koch
-
D
Gregor Mendel
6
What is the average length of the small intestine in a living adult human?
-
A
3 metres
-
B
6 metres
-
C
9 metres
-
D
12 metres
7
Approximately what percentage of the total human body weight is made up of water?
8
The human brain consumes approximately what percentage of the body's total oxygen supply?
9
How many primary teeth are typically found in a complete set of human deciduous teeth?
10
In what year did James Watson and Francis Crick publish their paper on the double helix structure of DNA?
-
A
1948
-
B
1953
-
C
1958
-
D
1962
11
What is the average lifespan of a human red blood cell?
-
A
30 days
-
B
60 days
-
C
120 days
-
D
180 days
12
How many lobes are present in the right lung of a human?
13
The total surface area of the human skin in an average adult is approximately how many square metres?
14
How many cervical vertebrae are found in the human spinal column?
15
What is the approximate number of taste buds on the human tongue?
-
A
2,000
-
B
5,000
-
C
10,000
-
D
20,000
16
The human body contains how many principal organ systems?
17
In which decade was the first successful human heart transplant performed by Christiaan Barnard?
-
A
1950s
-
B
1960s
-
C
1970s
-
D
1980s
18
How many chambers are there in a human heart?
19
The average human body temperature is often cited as 37 degrees Celsius; what is this in Fahrenheit?
-
A
95.6°F
-
B
98.6°F
-
C
100.4°F
-
D
102.2°F
20
A human sperm cell contains how many chromosomes?
21
The human retina contains approximately how many rod cells?
-
A
50 million
-
B
90 million
-
C
120 million
-
D
150 million
22
How many pairs of cranial nerves are attached to the human brain?
23
Approximately how many litres of blood does an average adult human body contain?
-
A
3-4 litres
-
B
5-6 litres
-
C
7-8 litres
-
D
9-10 litres
24
What is the number of muscles in the human body approximately?
-
A
over 300
-
B
over 600
-
C
over 900
-
D
over 1200
25
How many nucleotides make up the human genome?
-
A
1 billion
-
B
3 billion
-
C
6 billion
-
D
9 billion
