The correct answer is:(b) vacuole. The tonoplast is a differentially permeable membrane that surrounds the vacuole in plant cells. It regulates the movement of ions, nutrients, and waste materials between the vacuole and the cytoplasm, helping maintain cellular homeostasis.
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The correct answer is (d) glycolipids and glycoproteins. Carbohydrates in the plasma membrane are attached to lipids (glycolipids) or proteins (glycoproteins). They play a crucial role in cell recognition, signaling, and adhesion but are not present as cellulose, starch, or ...
The false statement is: (d) Cytoplasm is also called protoplasm. Mitochondria and plastids have their own DNA and can replicate independently.Lysosomes are formed from the Golgi apparatus. ATP (energy currency of the cell) is produced in mitochondria. Class 9th ...
The correct answer is (c) A virus. Viruses can be crystallized because they are non-living outside a host and have a well-organized structure made of proteins and genetic material. Unlike amoebas, sperms, and bacteria, which are living cells and cannot ...
The correct answer is (d) (i) and (ii). Ribosomes are responsible for protein synthesis and help in the manufacture of enzymes (which are proteins). However, they do not manufacture starch grains (carbohydrates) or hormones (some of which are proteins but ...