The helix-turn-helix (HTH) domain is a DNA-binding motif in proteins, typically found in transcription factors. It consists of two alpha helices connected by a short turn. The HTH domain facilitates specific binding to DNA sequences, regulating gene expression in various cellular processes. This is an MCQ on Helix-Turn-Helix (HTH) Domain […]
Continue ReadingCategory Archives: Biology MCQ
MCQ on Helix-Loop-Helix (HLH) Domain
The helix-loop-helix (HLH) domain is a protein structural motif involved in DNA binding and protein dimerization. Commonly found in transcription factors, it consists of two alpha helices connected by a loop, enabling the formation of homo- or heterodimers essential for gene regulation and cellular processes. This is an MCQ on […]
Continue Reading
MCQ on G Protein-Coupled Receptors (GPCRs)
GPCR, or G protein-coupled receptor, is a cell membrane protein that detects external signals and activates intracellular responses. It plays a crucial role in cell communication, mediating processes such as neurotransmission, immune response, and hormonal regulation in various physiological functions. This is an MCQ on G Protein-Coupled Receptors (GPCRs). | […]
Continue Reading
MCQ on Tertiary Structure of Proteins
Tertiary structure refers to the overall three-dimensional arrangement of a single polypeptide chain in a protein. It results from the folding and interactions between distant amino acid residues, forming a complex, functional structure crucial for the protein’s biological activity. This is an MCQ on Tertiary Structure of Proteins. | Biochemistry […]
Continue Reading
MCQ on Secondary Structure of Proteins
The secondary structure of a protein involves local folding patterns, primarily α-helices and β-sheets, stabilized by hydrogen bonds between amino acids in the polypeptide chain. It contributes to the three-dimensional shape of the protein and influences its function. This is an MCQ on Secondary Structure of Proteins. | Biochemistry Notes […]
Continue Reading