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Molecular Biology Basics Flashcards | StudBud

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Molecular Biology Basics

19 terms·StudBud Administration

Test your knowledge on the fundamental concepts of DNA, RNA, and gene expression

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Questions 19

Answers

1
What is heterochromatin?
RNA strand
Tightly packed DNA
Loosely packed DNA
Protein complex
2
How does euchromatin affect gene expression?
Destroys DNA
Inhibits transcription
No effect
Promotes transcription
3
What is the central dogma of molecular biology?
DNA to Protein to RNA
Protein to RNA to DNA
DNA to RNA to Protein
RNA to DNA to Protein
4
True or false: RNA uses thymine.
True
False
5
What sugar is in RNA?
Ribose
Fructose
Deoxyribose
Glucose
6
Which bond is weaker: A-T or G-C?
Both equal
G-C
A-T
Neither
7
What is the role of transcription factors?
Replicate RNA
Inhibit RNA polymerase
Destroy DNA
Recruit RNA polymerase
8
What is the TATA box?
Promoter sequence
Mutation site
Protein complex
End of RNA
9
What is the shape of DNA?
Triple helix
Quadruple strand
Single strand
Double helix
10
Where does transcription occur in eukaryotes?
Nucleus
Ribosome
Cytoplasm
Mitochondria
11
What is RNA splicing?
Copying DNA
Breaking RNA
Adding nucleotides
Removing introns
12
Which base pairs with adenine in DNA?
Cytosine
Guanine
Thymine
Uracil
13
What is the role of DNA polymerase?
Synthesizes RNA
Synthesizes DNA
Destroys mutations
Breaks DNA strands
14
What is the RNA World Hypothesis?
RNA was first genetic material
RNA is a sugar
RNA is unstable
RNA is a protein
15
Which process involves RNA polymerase?
Translation
Mutation
Replication
Transcription
16
What is added to the 5' end of mRNA?
Exons
Introns
5' cap
Poly-A tail
17
What is a promoter in DNA?
Start of transcription
End of gene
Middle of gene
Mutation site
18
Where does translation occur in prokaryotes?
Mitochondria
Nucleus
Cytoplasm
Ribosome
19
What is the function of histones?
Wrap DNA
Mutate DNA
Replicate DNA
Unwind DNA