Explore topic-wise MCQs in Bioinformatics.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Bioinformatics knowledge and support exam preparation. Choose a topic below to get started.

1.

DNA is methylated at

A. AC sequences
B. TATA sequences
C. CAAT sequences
D. CG sequences
Answer» E.
2.

In the presence of tryptophan in the cell, the repressor is __________

A. bound to tryptophan
B. bound to DNA
C. bound to both DNA and tryptophan
D. bound to neither tryptophan nor DNA
Answer» D. bound to neither tryptophan nor DNA
3.

The TATA box is often used as an indicator of the presence of a promoter.

A. True
B. False
Answer» B. False
4.

Eukaryotic RNA polymerase II does not directly bind to the promoter, but relies on a dozen or more transcription factors to recognize and bind to the promoter in a specific order before its own binding around the promoter.

A. True
B. False
Answer» B. False
5.

In eukaryotes, genes often form an operon with a shared promoter.

A. True
B. False
Answer» B. False
6.

The upstream sequence where the σ protein binds constitutes the promoter sequence.

A. True
B. False
Answer» B. False
7.

THE_TATA_BOX_IS_OFTEN_USED_AS_AN_INDICATOR_OF_THE_PRESENCE_OF_A_PROMOTER.?$

A. True
B. False
Answer» B. False
8.

EUKARYOTIC_RNA_POLYMERASE_II_DOES_NOT_DIRECTLY_BIND_TO_THE_PROMOTER,_BUT_RELIES_ON_A_DOZEN_OR_MORE_TRANSCRIPTION_FACTORS_TO_RECOGNIZE_AND_BIND_TO_THE_PROMOTER_IN_A_SPECIFIC_ORDER_BEFORE_ITS_OWN_BINDING_AROUND_THE_PROMOTER.?$

A. True
B. False
Answer» B. False
9.

In eukaryotes, genes often form an operon with a shared promoter?

A. True
B. False
Answer» B. False
10.

In eukaryotes, gene expression is not regulated by a protein complex formed between transcription factors and RNA polymerase.

A. True
B. False
Answer» C.
11.

The specific DNA sequences to which the transcription factors bind are referred to as _____

A. replication elements
B. blocking factors
C. transcription factors
D. regulatory elements
Answer» E.
12.

In addition to the RNA polymerase, there are also a number of DNA-binding proteins that facilitate the process of transcription.

A. True
B. False
Answer» B. False
13.

The promoter sequence may determine the expression of one gene or a number of linked genes downstream.

A. True
B. False
Answer» B. False
14.

The upstream sequence where the σ protein binds constitutes the promoter sequence.$

A. True
B. False
Answer» B. False
15.

In bacteria, transcription is initiated by DNA polymerase.

A. True
B. False
Answer» C.