HUMAN BODY
Which organ pumps blood around your body?
The heart
What is the basic unit of life?
The cell
What is the largest animal on Earth?
The blue whale
Which gas do plants absorb from the atmosphere during photosynthesis?
Carbon dioxide (CO₂)
True or false: Humans are animals.
True
What is the largest organ of the human body?
The skin
Where is most DNA found in a human cell?
In the nucleus.
Which group of vertebrates has feathers?
Birds
What is the green pigment in plants called?
Chlorophyll
True or false: All bacteria are harmful to humans.
False
Which organs filter the blood and produce urine?
The kidneys
Which organelle is known as the “powerhouse of the cell”?
Which organelle is known as the “powerhouse of the cell”?
What is the only group of mammals capable of true powered flight?
Bats
In which organelle does photosynthesis take place?
The chloroplast
Is a virus considered a cell?
No
What is the name of the red pigment in red blood cells that carries oxygen?
Hemoglobin
How many chromosomes are normally found in a human body cell?
46
What type of animal is an axolotl: fish, reptile or amphibian?
Amphibian
What do we call an organism that makes its own organic food from inorganic substances?
An autotroph / producer
Approximately how many bacterial cells live in and on the human body?
A) Thousands
B) Millions
C) Billions
D) Trillions
Trillions
What is the smallest bone in the human body and where is it found?
The stapes; in the middle ear
What process produces two genetically similar daughter cells during ordinary body-cell division?
Mitosis
Which living animals are the closest relatives of birds?
Crocodilians (crocodiles and alligators)
What is the relationship called when both organisms benefit from living together?
Symbiosis
Two randomly selected humans have approximately what percentage of their DNA sequence in common: 50%, 75%, 90% or more than 99%?
More than 99%