Explore topic-wise MCQs in Biochemistry.

This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Plasma membrane protein predicted to have seen 7 transmembrane helices segment binds __________

A. Progesterone
B. Thyroid stimulating hormone
C. Insulin
D. Follicle stimulating hormone
Answer» B. Thyroid stimulating hormone
Discussion
2.

Which drug is used to terminate early pregnancies?

A. RU486
B. Metformin
C. Glucophage
D. Victoza
Answer» B. Metformin
Discussion
3.

What is the drug antagonist of estrogen?

A. Tanoxifen
B. Metformin
C. Glucophage
D. Victoza
Answer» B. Metformin
Discussion
4.

Mode of action of steroid hormones involve ______________

A. Stimulation of DNA replication
B. Stimulation of m-RNA transcription
C. Inhibition of protein synthesis
D. Secondary messenger
Answer» C. Inhibition of protein synthesis
Discussion
5.

Steroid hormones receptor binds to _____________

A. Hormone response elements in m-RNA
B. Hormone response elements in DNA
C. Hormone response elements in proteins
D. Ribosomes to stimulate translation
Answer» C. Hormone response elements in proteins
Discussion
6.

Steroid regulatory proteins mediate the act by binding at ___________

A. Zinc finger motif
B. Leucine zipper motif
C. Helix turn helix motif
D. Histone helix motif
Answer» B. Leucine zipper motif
Discussion
7.

Which is an example of negative regulator?

A. CAP
B. Lac 1 gene
C. Nuclear receptors
D. Phosphorylated STAT proteins
Answer» C. Nuclear receptors
Discussion
8.

Which is an example of a positive regulator?

A. CAP
B. Lac 1 gene
C. Trp operon
D. Met operon
Answer» B. Lac 1 gene
Discussion
9.

THE_DRUG_USED_TO_TERMINATE_EARLY_PREGNANCIES_IS?$

A. RU486
B. Metformin
C. Glucophage
D. Victoza
Answer» B. Metformin
Discussion
10.

Plasma membrane protein predicted to have seen 7 transmembrane helices segment binds
A. Progesterone
B. Thyroid stimulating hormone
C. Insulin
D. Follicle stimulating hormone
Answer» B. Thyroid stimulating hormone
Discussion
11.

The drug antagonist of estrogen i?

A. Tanoxifen
B. Metformin
C. Glucophage
D. Victoza
Answer» B. Metformin
Discussion
12.

Mode of action of steroid hormones involve

A. Stimulation of DNA replication
B. Stimulation of m-RNA transcription
C. Inhibition of protein synthesis
D. Secondary messenger
Answer» C. Inhibition of protein synthesis
Discussion
13.

Steroid hormones receptor binds to

A. Hormone response elements in m-RNA
B. Hormone response elements in DNA
C. Hormone response elements in proteins
D. Ribosomes to stimulate translation
Answer» C. Hormone response elements in proteins
Discussion
14.

Which out of the following statements is true about gene regulation in bacteria?

A. Repressor protein blocks transcription by binding to operator sequence
B. Activator proteins bind near promoters and increase the efficiency of transcription
C. Enhancers commonly regulate transcription
D. Genes with related functions are often grouped together and have a single start codon
Answer» B. Activator proteins bind near promoters and increase the efficiency of transcription
Discussion
15.

Steroid regulatory proteins mediate the act by binding at

A. Zinc finger motif
B. Leucine zipper motif
C. Helix turn helix motif
D. Histone helix motif
Answer» B. Leucine zipper motif
Discussion
16.

An example of positive regulator

A. CAP
B. Lac 1 gene
C. Trp operon
D. Met operon
Answer» B. Lac 1 gene
Discussion
17.

How do steroid hormones produce their effects in cells?

A. By activating key enzymes in metabolic pathway
B. By binding to intracellular receptors and promoting transcription of specific genes
C. By promoting degradation of specific m-RNAs
D. By activating translation of certain m-RNAs
Answer» C. By promoting degradation of specific m-RNAs
Discussion