Molecular Biology II FiniteQuest

Molecular Biology II

Molecular Biology is the study of biological processes at the molecular level, primarily focusing on the interactions between various systems of a cell, including the interrelationships of DNA, RNA, and proteins, and their biosynthesis, regulation, and functions.

1 / 10

The spliceosome is a complex responsible for splicing pre-mRNA in eukaryotic cells. What are the primary components of the spliceosome?

rRNA and proteins

DNA and RNA polymerase

snRNA and proteins

tRNA and ribosomes

2 / 10

Which process describes the incorporation of foreign DNA into a bacterial cell, enabling it to acquire new genetic traits?

Transduction

Transformation

Conjugation

Recombination

3 / 10

Which molecular technique is used to measure the expression levels of thousands of genes simultaneously by hybridizing labeled cDNA to a solid surface containing many DNA probes?

Microarray analysis

Sanger sequencing

Western blotting

Northern blotting

4 / 10

What is the function of the polyadenylation signal sequence in eukaryotic mRNA?

To initiate transcription

To bind ribosomes during translation

To promote the formation of the 5′ cap

To signal the addition of the poly-A tail

5 / 10

Which of the following RNA molecules is involved in the regulation of gene expression by binding to complementary mRNA molecules and preventing their translation?

Ribosomal RNA (rRNA)

Transfer RNA (tRNA)

Messenger RNA (mRNA)

Small interfering RNA (siRNA)

6 / 10

Which molecular technique is used to amplify specific DNA sequences and can be utilized for various applications such as cloning, gene analysis, and forensic science?

Gel electrophoresis

Polymerase chain reaction (PCR)

Southern blotting

DNA sequencing

7 / 10

The signal recognition particle (SRP) is crucial for the targeting of proteins to which cellular organelle?

Endoplasmic reticulum

Nucleus

Mitochondria

Golgi apparatus

8 / 10

Which type of RNA molecule is primarily involved in the removal of introns from pre-mRNA during the process of RNA splicing?

tRNA (transfer RNA)

rRNA (ribosomal RNA)

snRNA (small nuclear RNA)

miRNA (microRNA)

9 / 10

In eukaryotic cells, which of the following elements is essential for the regulation of transcription by allowing for the assembly of transcription factors and RNA polymerase at the promoter region?

Enhancers

Silencers

Mediator complex

Insulators

10 / 10

Which process ensures that only properly folded proteins are allowed to leave the endoplasmic reticulum and are transported to their final destinations?

Post-translational modification

Protein sorting

Unfolded protein response (UPR)

Quality control mechanism

Your score is

The average score is 0%