Last seen: Jan 13, 2022
(c) If Assertion is correct but Reason is incorrect.
Answer is: (c) Explanation: Lipids present in the outer and inner side of the bilayer are commonly different, e.g., lecithin on the outer side and...
Answer is: (b) Explanation: Eukaryotic cells contain three types of filaments as microtubules, microfilament and intermediate filament which give ...
Answer is: (d) Explanation: The size and shape of the cell in multicellular organism depends upon the location and function performed by them.
Answer is: (a) Explanation: Specialization of the cell increases the efficiency of the cell for a particular function.
Answer is: (a) Explanation: Cells are the basic structural and functional unit of organism.
Answer is:(a) Explanation: Animal cells are covered by semipermeable plasma membrane. Cell wall is absent in animal because cell wall is incompati...
Answer is: (b) Explanation: Mitochondria are called power house of a cell because they produce large amount of energy in the form of ATP.
(a) (iii) and (iv) Explanation: The special membranous structure formed by the extension of prokaryotic plasma membrane is known as mesosome while...
(b) Lysosome — Protein synthesis Explanation: Protein synthesis takes place in ribosomes, which are attached to surface of endoplasmic reticulum b...
(b) Acentric chromosome Explanation: Acentric chromosome may be lost during cell division as centromere is absent in them. During metaphase and an...
(b) Cisternae, tubules and vesicles Explanation: Three morphological forms of golgi complex are cisternae, tubules and vesicles. Varied number of ...
(b) pinocytosis Explanation: Pinocytosis, or pinching in of the cell membrane, allows cells, such as the Paramecium, to capture larger food molecu...
(c) Storage of starch, proteins and lipids. Explanation: Chromoplasts are plastids responsible for pigment synthesis and storage. They, like all o...
(a) mitochondria and inherited via egg cytoplasm Explanation: Genes present in the cytoplasm of eukaryotic cells are found in mitochondria and inh...
(a) Virchow Explanation: The cell is the basic structural and functional unit of living organisms. In 1855, Rudolf Virchow showed that all cells a...
(d) Endoplasmic reticulum Explanation: Endoplasmic reticulum (ER) is a system of flattened membranes running through the cytoplasm. Rough ER conta...
(d) internal membrane systems that may become extensive and complex in photosynthetic bacteria. Explanation: In prokaryotes, chromatophores are in...
(a) Presence of pigments. Explanation: C4 pathway/Hatch and Slack pathway ensures the Calvin cycle to be operated only in bundle sheath cell. It i...
(a) Lysosomes are double membraned vesicles budded off from Golgi apparatus and contain digestive enzymes. Explanation: Lysosomes are single membr...