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What is the normal pH for the human body?
0%
7
0%
1
0%
14
0%
3
Explanation
In biology, the pH scale measures how acidic or basic something is. The lower the number, the more acidic while the higher the number means it is basic. A pH of 7 is neutral which is what the human blood pH is, more specifically around 7.35–7.45.
Which scientist is credited with discovering the idea of natural selection?
0%
Charles Darwin
0%
Louis Pasteur
0%
Isaac Newton
0%
Galileo Galilei
Explanation
Charles Darwin is a scientist who coined the idea of natural selection – that animals who have the ability to adapt to their environment have a better chance at survival and reproduction.
What metal is present in the blood?
0%
Iron
0%
Cobalt
0%
Nickel
0%
Silver
Explanation
Iron is the metal that is found in blood. It is very important in the transpiration process and helps transport oxygen throughout the body.
What is the longest bone in the body?
0%
Femur
0%
Humerus
0%
Tibia
0%
Fibula
Explanation
The femur is the longest bone in the body and can be found in the thigh. It begins at the pelvic bone and continues to the patella (knee).
How many pairs of chromosomes can be found in the human gene?
0%
23
0%
46
0%
1
0%
14
Explanation
The human genome should have a total of 46 chromosomes but 23 pairs. These pairs can determine things such as whether you're a male or female or whether you'll have any conditions or diseases.
What does the A in DNA stand for?
0%
Acid
0%
Anatomy
0%
Alternate
0%
Aloe
Explanation
DNA is essentially the genetic instructions of the human body. It is a code that, when analyzed, can be used to determine genetic traits. The acronym stands for deoxyribonucleic acid.
What word is used to describe a single-celled organism that doesn't have a nucleus?
0%
Prokaryote
0%
Eukaryote
0%
Amoeba
0%
Protozoa
Explanation
When it comes to single-celled organisms, they can either be a prokaryote or a eukaryote. The defining factor is that eukaryotes have a nucleus while prokaryotes do not.
When you eat both plants and animals, what are you called?
0%
An omnivore
0%
A carnivore
0%
A herbivore
0%
A botanist
Explanation
Omnivore is the term reserved for an animal that eats both meat and plants with the prefix omni- meaning everything. A carnivore only eats meat, while herbivores only eat plants.
Which blood type can receive blood from anyone?
0%
AB
0%
A
0%
B
0%
O
Explanation
While blood type O is known as the universal donor, blood type AB is known as the universal receiver. This means that someone with blood type AB can receive blood from someone with blood type A, B, or O.
How many bones are in the average adult human body?
0%
206
0%
100
0%
50
0%
157
Explanation
When a baby is born they have about 300 bones in their body. This is why they're so flexible. As they get older, their bones start to fuse together, and this becomes the 206 bones that the average adult has.
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