Category: Biochemistry
The Respiratory Puzzle: Gaseous Exchange vs. Breathing
Respiration is a fundamental process for all living organisms, ensuring the supply of oxygen and the removal of carbon dioxide, critical for sustaining life. While “breathing” is a term we commonly associate with the respiratory process, it is essential to recognize that respiration is a multifaceted concept, involving both mechanical actions and intricate physiological processes.…
General Q&A part-2
This page contains general Q&A questions asked by curious people. What is biochemistry? Biochemistry is a branch of science that combines principles from both biology and chemistry to study the chemical processes and substances that occur within living organisms. It focuses on understanding the molecular mechanisms that underlie various biological functions and processes, including metabolism,…
General Q&A part-1
This page contains general Q&A questions asked by curious people. How many types of Air pollution? Air pollution can be categorized into several types based on the sources of pollutants, the nature of the pollutants, and their effects on the environment and human health. The main types of air pollution include: Particulate Matter (PM): Particulate…
What is enzyme and characteristics?
Enzymes are biological catalysts that facilitate chemical reactions in living organisms. They are typically proteins, although some RNA molecules also have catalytic activity. Enzymes are essential for life because they speed up the reactions that are necessary for cells to function properly. Without enzymes, many biochemical reactions in the body would occur too slowly to…
Plasma membrane
Delimiting membrane or boundary of all cells providing the characteristic shape to the cell. Structure ● Composed of approx. 7 nm thick phospholipid bilayer with hydrophilic heads facing outward from both sides into aqueous environment and hydrophobic tails facing inside the bilayer. ● A symmetrical the presence of proteins, floating in the bilayer imparts a…
Mutation
Mutation is a change in the DNA sequence of an organism’s genetic material. DNA, or deoxyribonucleic acid, is the molecule that carries the genetic instructions for the development and function of all living things. DNA is made up of four chemical bases, adenine (A), cytosine (C), guanine (G), and thymine (T), which are arranged in…
Chromosome
A chromosome is a structure found in cells that is made up of a long strand of DNA, which is the genetic material that contains the instructions for the development and function of all living organisms. Chromosomes are found in the nucleus of eukaryotic cells and play a crucial role in the cell cycle, replication,…
True Or False On Carbohydrates
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BLOOD CLOTTING (HAEMOSTASIS)
The clot or coagulam is a dark -reddish-brown ‘scum’ formed mainly by a network of threads in which dead or damaged blood elements are trapped. It is the property of plasma. Normal blood clotting time is 3−10 min. The clot inside the blood vessels is called a thrombus. A moving thrombus is called embolus. In…
CARBOHYDRATES
Table of Contents Carbohydrates are classified into two types on the basis of molecular weight. Micromolecules – Monosaccharides and Oligosaccharides (Including Disaccharides) Macromolecules – Polysaccharides The micromolecules have the molecular weight of < 1000 Daltons whereas themacromolecules have > 1000 Daltons as molecular weight. Why do we need carbohydrates in our food? Carbohydrates provides about…
MCQs ON PLANT KINGDOM
1. Sexual reproduction involving the fusion of two cells in Chlamydomonas is (a) isogamy (b) homogamy (c) somatogamy (d) hologamy Answer and Explanation: 1. (d): Isogamy involves the fusion of gametes which are morphologically and physiologically similar. They are called isogametes. In Chlamydomonas, two vegetative cells may fuse to form a zygospore and the phenomenon is…
What is the function of the cell membrane?
The cell membrane is otherwise called a Plasma membrane. It may be defined as the thin, elastic, semipermeable living membrane that serves as a boundary for the Cytoplasm. The Cell membrane is made up of glycoproteins and phospholipids. The Functions of the Cell membrane are as follows: Cell membrane or Plasma membrane is a semipermeable membrane present…
