The Building Blocks of Life: Nucleotides
Imagine you're on a construction site. The project? Building the codes of life! The workers are enzymes, and the bricks they use are called 'nucleotides'. Nucleotides are small but mighty, made up of three parts: a sugar, a phosphate, and a nitrogen base. There are four types of these 'bricks' in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T), and in RNA, uracil (U) replaces thymine. The enzymes carefully arrange them into chains, like bricklayers. This chain forms the 'blueprint' of life - the genetic information. So, next time you see a building, remember the incredible 'construction project' happening inside your cells, where nucleotides, the 'building blocks', are tirelessly working to make you, you!
Question 1
What are the 'bricks' in DNA called?
Nucleotides
Explanation. Nucleotides are the building blocks of DNA, made up of three parts: a sugar, a phosphate, and a nitrogen base.
Enzymes
Sugars
Phosphates
Nitrogen bases
Question 2
What replaces thymine in RNA?
Adenine
Cytosine
Guanine
Uracil
Explanation. In RNA, uracil (U) replaces thymine (T).
None of the above
Question 3
What is the role of enzymes in this 'construction project'?
They create the nucleotides
They destroy the nucleotides
They arrange the nucleotides into chains
Explanation. The enzymes in this 'construction project' are responsible for arranging the nucleotides into chains, like bricklayers.
They transform the nucleotides into RNA
None of the above
Question 4
What do these chains of nucleotides form?
The genetic information
Explanation. These chains of nucleotides form the 'blueprint' of life - the genetic information.
The enzymes
The building blocks of life
The DNA and RNA
All of the above
Question 5
How many types of 'bricks' are there in DNA?
Three
Four
Explanation. There are four types of these 'bricks' in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
Five
Six
Two
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