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Unit 1 Biology (Edexcel IAL): Nucleic acids Exam Questions with 100% Correct Answers

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Unit 1 Biology (Edexcel IAL): Nucleic acids Exam Questions with 100% Correct Answers What are nucleotides? - Molecules that carry the information needed to form new cells What is DNA? - Deoxyribonucleic acid Where is DNA found? - In chromosomes of the nucleus of cells What is the structure of DNA? - Polymers consisting of nucleotide monomers Nucleotide consists of: - Pentose sugar (deoxyribose) - Phosphate group (phosphoric acid) - Nitrogenous base What is RNA? - Ribonucleic acid

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Unit 1 Biology (Edexcel IAL): Nucleic

acids Exam Questions with 100%

Correct Answers

What are nucleotides? - ✔✔Molecules that carry the information needed to

form new cells

What is DNA? - ✔✔Deoxyribonucleic acid

Where is DNA found? - ✔✔In chromosomes of the nucleus of cells

What is the structure of DNA? - ✔✔Polymers consisting of nucleotide

monomers

Nucleotide consists of:

- Pentose sugar (deoxyribose)

- Phosphate group (phosphoric acid)

- Nitrogenous base

What is RNA? - ✔✔Ribonucleic acid

1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

, What is the structure of RNA? - ✔✔Polymers consisting of nucleotide

monomers

Nucleotide consists of:

- Pentose sugar (ribose)

- Phosphate group (phosphoric acid)

- Nitrogenous base

What is the difference between deoxyribose and ribose? - ✔✔Deoxyribose

contains 1 less oxygen atom

What are the purine bases? - ✔✔Bases with 2 nitrogen containing rings:

adenine and guanine

What are the pyrimidine bases? - ✔✔Bases with 1 nitrogen containing ring:

cytosine, thymine, and uracil

What are the base pairings in DNA? - ✔✔A - T

G-C

What are the base pairings in RNA? - ✔✔A - U

G-C

What forms the backbone of DNA and RNA? - ✔✔Pentose sugar and

phosphate group

2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

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Unit 1 Biology (Edexcel IAL): Nucleic acids Exam Questions with 100% Correct Answers

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