Questions and Answers
History of life on Earth
1.
Which element is present in all living organisms?
Carbon
2.
Complete the sentence.
Amino acids serve as the fundamental building blocks of proteins, which are essential to life.
3.
Complete the sentence.
It is believed that heterothropswere the first signs of life on Earth, absorbing organic material directly from the sea.
4.
Earth was created around:
4.5 billion years ago
Which statements are true and which are false?
5.
Planet Mars is too far from Sun making it too cold to develop life.
True
6.
The Sun was created the same time Earth was.
False
7.
First life forms on Earth were multicellural organisms.
False
8.
It is most probable, that first living organisms on Earth inhabitet the oceans.
True
9.
Which of those organisms are capable of synthesyzing energy from inorganic sources?
autotrophs
10.
When the first living organisms developed?
The first living organisms arose about 3.5billion years ago
11.
Remains of living organisms preserved in rocks are called fossils, and scientists who study them are called paleontologists.
Which statements are true and which are false?
12.
All present-day living organisms share common ancestor organism.
True
13.
Photosynthesis first emerged around 3.5 billion years ago.
True
14.
First multicellural organisms emerged about 250 million years ago.
False
15.
When Earth first formed, the oxygen in the atmosphere was almost non-existent.
True
16.
Process of diversification of organisms into different species over the successive generations is called:
evolution
17.
Which bacteria were resposible for starting the mass produciton of atmospheric oxygene?
Cyanobacteria
18.
What is the name of theory describing continental movement?
The theory of continental driftclaims that continents slowly move across the Earth.
19.
What is Pangea?
large supercontinent that existed about 250 million years ago