NEET BIOLOGY IMPORTANT

1. What is the structure and function of DNA?

Answer: DNA (Deoxyribonucleic acid) is a double-stranded helical structure that carries genetic information. It consists of nucleotides made up of sugar, phosphate, and nitrogenous base. The function of DNA is to store and transmit genetic information from one generation to another.

Keywords: DNA structure, DNA function, genetic information, nucleotides, nitrogenous base.

2. What are enzymes and their role in metabolic processes?

Answer: Enzymes are biological catalysts that speed up chemical reactions in cells. They play a vital role in metabolic processes such as digestion, respiration, and photosynthesis. Enzymes work by lowering the activation energy required for a reaction to occur.

Keywords: Enzymes, biological catalysts, metabolic processes, activation energy, chemical reactions.

3. What is osmosis and how does it differ from diffusion?

Answer: Osmosis is the movement of water molecules across a selectively permeable membrane from a region of high concentration to a region of low concentration. Diffusion is the movement of molecules from a region of high concentration to a region of low concentration. The key difference between osmosis and diffusion is that osmosis only involves the movement of water molecules, while diffusion involves the movement of any type of molecule.

Keywords: Osmosis, diffusion, selectively permeable membrane, water molecules, concentration gradient.

4. What are the different types of blood vessels and their functions?

Answer: There are three types of blood vessels - arteries, veins, and capillaries. Arteries carry oxygenated blood away from the heart to the rest of the body, while veins carry deoxygenated blood back to the heart. Capillaries are the smallest blood vessels that connect arteries and veins and allow for the exchange of oxygen, nutrients, and waste products between the blood and tissues.

Keywords: Blood vessels, arteries, veins, capillaries, oxygenated blood, deoxygenated blood, exchange of nutrients.

5. What is mitosis and its significance in cell division?

Answer: Mitosis is a process of cell division in which a single cell divides into two identical daughter cells. It is important for growth, repair, and maintenance of tissues. Mitosis ensures that each daughter cell receives an identical copy of the genetic material.

Keywords: Mitosis, cell division, daughter cells, growth, tissue repair, genetic material.

I hope these NEET biology questions and answers, along with the suggested keywords, help you create engaging and informative content for NEET aspirants in 2023!