In eukaryotes, transcription involves RNA polymerase binding to the promoter region on DNA, followed by synthesis of a complementary mRNA strand. This pre-mRNA undergoes processing, including splicing and addition of a poly-A tail and a 5′ cap, before being exported to the cytoplasm for translation. This is an MCQ on […]
In prokaryotes, transcription is the process where RNA polymerase binds to the promoter region of DNA and synthesizes a complementary mRNA strand using one of the DNA strands as a template. This mRNA carries genetic information from DNA and serves as a template for protein synthesis. This is an MCQ […]
Mitosis is a type of cell division in eukaryotic organisms, resulting in two identical daughter cells. It plays a crucial role in growth, development, and tissue repair. Mitosis consists of stages: prophase, metaphase, anaphase, and telophase, ensuring accurate distribution of chromosomes. This is an MCQ on Mitosis. | Cell and […]
Meiosis is a type of cell division that produces gametes (sperm and egg cells) in sexually reproducing organisms. It involves two rounds of division, resulting in four daughter cells with half the chromosome number of the parent cell, enabling genetic diversity. This is an MCQ on Meiosis. | Cell and […]
Chromosomes are thread-like structures found in the nucleus of eukaryotic cells. They consist of DNA tightly coiled around histone proteins. Chromosomes carry genetic information in the form of genes and are essential for cell division, reproduction, and inheritance. Humans typically have 23 pairs of chromosomes, totaling 46 chromosomes in each […]
Histone proteins are highly alkaline proteins found in eukaryotic cell nuclei. They form the core around which DNA wraps to form nucleosomes, the basic units of chromatin. Histones play crucial roles in DNA packaging, gene regulation, and epigenetic modifications, influencing gene expression and cellular processes within the nucleus. This is […]
The rough endoplasmic reticulum (RER) is a cellular organelle characterized by its studded appearance due to ribosomes attached to its surface. It plays a vital role in protein synthesis, folding, and transport, contributing significantly to the endomembrane system’s functions within eukaryotic cells. This is an MCQ on Rough Endoplasmic Reticulum […]
The smooth endoplasmic reticulum (SER) lacks ribosomes on its surface and is involved in lipid synthesis, detoxification, and calcium storage within eukaryotic cells. It plays crucial roles in various cellular processes, including metabolism, steroid hormone production, and drug metabolism. This is an MCQ on Smooth Endoplasmic Reticulum Structure and Functions. […]
MCQ on Protein Function: Proteins serve diverse roles in living organisms, including enzymatic catalysis, structural support, transport of molecules, immune defense, and cell signaling. They contribute to the regulation of gene expression, muscle contraction, and overall cellular function, essential for life processes. Biochemistry Notes | Biochemistry PPTs | Biochemistry MCQs […]