What is the primary element that forms the basis of all known life forms on Earth?

Silicon and Life Forms Exploration

Interactive Video
•
Chemistry, Biology, Science
•
9th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxygen
Carbon
Silicon
Nitrogen
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is carbon considered unique among elements in forming the basis of life?
It forms unstable bonds with all elements.
It can form stable and diverse structures.
It can only bond with hydrogen.
It is the heaviest element.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which element is considered a potential alternative to carbon for life forms?
Hydrogen
Oxygen
Nitrogen
Silicon
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a major limitation of silicon compared to carbon in forming life?
Silicon cannot bond with oxygen.
Silicon forms unstable multiple bonds.
Silicon is lighter than carbon.
Silicon cannot form polymers.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What technique is used to evolve organisms to use silicon?
Natural selection
Artificial selection
Genetic engineering
Directed evolution
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary challenge in detecting alien life on exoplanets?
Lack of telescopes
Distance from Earth
Absence of water
Measuring light signatures
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key indicator that might suggest the presence of life on an exoplanet?
Abundance of small molecules like oxygen
High temperatures
Lack of atmosphere
Presence of large rocks
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