1. What is the difference between an animal cell and a plant cell?
2. Why are chloroplast found only in plant cells?
3. Cells are the basic structural and functional unit of life. Explain.
4. What is the difference between eukaryotes and prokaryotes?
5. Explain the process of photosynthesis.
6. Explain cytoplasm in brief.
7. Write a note on nucleus of a cell.
8. What is the function of Nerve Cells?
9. What is the function of Nucleus?
10. Draw a neat diagram of a Nerve Cell.
Answers
Answer:
1 Plant cells have a cell wall, but animals cells do not. ... Plant cells have chloroplasts, but animal cells do not. Chloroplasts enable plants to perform photosynthesis to make food. Plant cells usually have one or more large vacuole(s), while animal cells have smaller vacuoles, if any are present.
2 Chloroplasts are found in plant cells only because chloroplasts contain chlorophyll which is essential for photosynthesis. Chlorophyll traps sunlight and uses it to prepare food for plants by the process of photosynthesis.
3 The cell is known as the structural and functional unit of life because all living beings are formed of cells. ... Moreover, cells give form and structure, process nutrients and make it into usable energy. Multicellular organisms consist of specialized cells which perform specific
4. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information. ... Prokaryotes, on the other hand, have no membrane-bound organelles.
5 photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
6. Cytoplasm is the gelatinous liquid that fills the inside of a cell. It is composed of water, salts, and various organic molecules. Some intracellular organelles, such the nucleus and mitochondria, are enclosed by membranes that separate them from the cytoplasm.
7. The spherical round body present in the centre of the cell is called nucleus. It is an important component of the living cell. Nucleus is separated from the cytoplasm by a membrane called the nuclear membrane. ... Nucleus also contains thread-like structures called chromosomes.
8. Neurons (also called neurones or nerve cells) are the fundamental units of the brain and nervous system, the cells responsible for receiving sensory input from the external world, for sending motor commands to our muscles, and for transforming and relaying the electrical signals at every step in between
9 The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information.