Q: Which equation represents the relationship between gene expression and protein abundance?

Protein abundance $$= \text{mRNA expression} \times \text{translation rate}$$

Q: Which equation best represents the separation of proteins in SDS-PAGE?

Migration distance $$\propto \frac{1}{\text{molecular weight}}$$

Question 1

Which of the following best describes the central dogma of molecular biology?

Accepted Answer

DNA is transcribed into RNA, which is then translated into protein.

Question 2

Which equation represents the relationship between gene expression and protein abundance?

Accepted Answer

Protein abundance $$= 	ext{mRNA expression} 	imes 	ext{translation rate}$$

Question 3

Which of the following is NOT a limitation of microarray technology?

Accepted Answer

Can detect novel RNA sequences without prior knowledge

Question 4

A researcher wants to study the transcriptome of a cancer cell. Which technique would provide the most comprehensive information about both known and novel RNA transcripts?

Accepted Answer

RNA-Seq

Question 5

Which step in cDNA synthesis is responsible for removing the original RNA template?

Accepted Answer

Degradation with RNAse

Question 6

What is the main advantage of mass spectrometry over SDS-PAGE in proteomics?

Accepted Answer

It can identify proteins based on their mass-to-charge ratio and sequence.

Question 7

Which of the following best defines the transcriptome?

Accepted Answer

The complete set of transcribed elements of the genome, including mRNAs, tRNAs, rRNAs, and non-coding RNAs.

Question 8

Which RNA molecule is responsible for carrying amino acids to the ribosome during translation?

Accepted Answer

tRNA

Question 9

A patient sample is analyzed using a protein microarray to detect disease biomarkers. Which step ensures that only specific binding occurs on the array?

Accepted Answer

Blocking with BSA

Question 10

Which of the following statements about the proteome is TRUE?

Accepted Answer

The proteome is dynamic and changes with conditions such as stress or disease.

Question 11

Which equation best represents the separation of proteins in SDS-PAGE?

Accepted Answer

Migration distance $$\propto \frac{1}{	ext{molecular weight}}$$

Question 12

Which of the following is a real-world application of RNA-Seq?

Accepted Answer

Detecting alternative splicing events in disease states

Question 13

In affinity capture, what is the most common ligand used to isolate specific proteins?

Accepted Answer

Antibody

Question 14

Which of the following omics approaches would be most appropriate for studying post-translational modifications?

Accepted Answer

Proteomics

Question 15

A scientist is comparing gene expression between healthy and diseased tissue using microarrays. Which step is crucial for ensuring accurate quantification?

Accepted Answer

Labeling cDNA with fluorescent nucleotides

Question 16

Which of the following best explains why the proteome is more complex than the genome?

Accepted Answer

Alternative splicing and post-translational modifications increase protein diversity.

Question 17

Which of the following is a limitation of SDS-PAGE in proteomics?

Accepted Answer

It is difficult to automate and requires simple proteomes.

Question 18

Which process is used to convert mRNA into cDNA?

Accepted Answer

Reverse transcription

Question 19

Which of the following best describes the workflow of protein microarrays?

Accepted Answer

Surface preparation, protein immobilization, blocking, sample incubation, detection and imaging

Question 20

Which omics approach would be most useful for identifying drug targets by screening protein interactions?

Accepted Answer

Proteomics

(W 6 Slides) RNA and Protein Technologies in Genetics: Transcriptomics, cDNA, Microarrays, and Proteomics

Study Guide - Practice Questions

Study Guide - Flashcards