CUET > General Test Preparation for CUET > Cell - Biology, General Science
Cell - Biology, General Science Video Lecture - General Test Preparation for CUET
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FAQs on Cell - Biology, General Science Video Lecture - General Test Preparation for CUET
| 1. What is cell biology? |  |
Ans. Cell biology is a branch of science that focuses on the study of cells, their structure, function, and interactions with their environment. It explores how cells are formed, how they reproduce, and how they carry out various processes necessary for life.
| 2. How are cells classified? | |
Ans. Cells are classified into two main categories: prokaryotic and eukaryotic cells. Prokaryotic cells, such as bacteria, lack a nucleus and other membrane-bound organelles. Eukaryotic cells, found in plants, animals, fungi, and protists, have a distinct nucleus and various membrane-bound organelles.
| 3. What is the function of the cell membrane? | |
Ans. The cell membrane, also known as the plasma membrane, acts as a barrier that separates the cell from its external environment. It regulates the movement of substances in and out of the cell, maintaining a stable internal environment. Additionally, the cell membrane plays a crucial role in cell signaling and communication.
| 4. How do cells reproduce? | |
Ans. Cells can reproduce through two main processes: mitosis and meiosis. Mitosis is a type of cell division that produces two identical daughter cells, each with the same number of chromosomes as the parent cell. It is involved in growth, repair, and asexual reproduction. Meiosis, on the other hand, is a specialized form of cell division that produces gametes (sex cells) with half the number of chromosomes. It is essential for sexual reproduction.
| 5. What are the major organelles in a cell and their functions? | |
Ans. Cells contain various organelles that perform specific functions. Some of the major organelles include the nucleus (controls cell activities and contains genetic material), mitochondria (produces energy through cellular respiration), endoplasmic reticulum (involved in protein synthesis and lipid metabolism), Golgi apparatus (modifies, sorts, and packages proteins for transport), and lysosomes (contain enzymes for digestion and waste removal). Each organelle plays a vital role in maintaining cell structure and carrying out specific cellular functions.
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