20895734
Description
Quiz by Blen Abate, updated more than 1 year ago
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Created by Blen Abate
almost 5 years ago
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Question 1
Question
What are the components of a DNA molecule?
Answer
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deoxyribose, a phosphate and one of the bases: adenine, cytosine, guanine or thymine
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ribose, a phosphate, and one of the bases: adenine, cytosine, guanine or uracil
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Deoxyribose, a nitrate and one of the bases: adenine, cytosine, guanine or thymine
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Ribose, a nitrate and one of the bases: adenine, cytosine, guanine or thymine
Question 2
Question
What type of bond holds the complementary base pairs together in a double helix of DNA?
Answer
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Covalent bonds
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Peptide bonds
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Glycosidic bonds
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Hydrogen bonds
Question 3
Question
What enzyme is used in transcription but not in translation?
Answer
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DNA polymerase
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Helicase
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Protease
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RNA polymerase
Question 4
Question
A certain gene in a bacterium codes for a polypeptide that is 120 amino acids long. How many nucleotides are needed in the mRNA to code for this polypeptide?
Answer
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30
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40
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360
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480
Question 5
Question
What is responsible for the conservation of the base sequence during DNA replication?
Answer
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DNA polymerase working on one strand at the same time.
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Unpaired bases always attracting their complementary nucleotides.
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DNA helicase and polymerase are complementary.
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Both strands are identical to each other.
Question 6
Question
During the process of replication, which bond(s) in the diagram of DNA below is/are broken?
Answer
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3
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4/5
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1,2,6,7
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1,7,4,5
Question 7
Question
How would the following DNA sequence, ACGTTGCATGGCA, be transcribed?
Answer
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UGCAACGUACCGU
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TGCAACGTACCGT
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ACGTTGCATGGCA
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ACGUUGCAUGGCA
Question 8
Question
The base sequence is the store of information.
Answer
- True
- False
Question 9
Question
Nitrogenous bases have two rings.
Answer
- True
- False
Question 10
Question
The base-phosphate backbone ensures that the store is stable and secure.
Answer
- True
- False
Question 11
Question
In order to link nucleotides into a chain, a hydrogen bond is formed b/n the phosphate and a pentose sugar.
Answer
- True
- False
Question 12
Question
Polymers of nucleotides also known as "strands"
Answer
- True
- False
Question 13
Question
The four bases in RNA are [blank_start]adenine[blank_end], [blank_start]uracil[blank_end], [blank_start]cytosine[blank_end] and [blank_start]guanine[blank_end].
Answer
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uracil
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adenine
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cytosine
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guanine
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