22. A - Nucleolus
23. B - golgi apparatus
24. C - Vacuole
25. B - Lock and Key model
26. B
Answer:
Solution
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Correct option is
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Prokaryotic cells have a cell wall surrounding the cell membrane. The fluid matrix filling the cell is the cytoplasm. There is no well-defined nucleus. The genetic material is basically naked in the cytoplasm, not enveloped by a nuclear membrane. The nuclear membrane is found in eukaryotes. The prokaryotic cells lack mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, microtubules, microfilaments, and centrioles.
Cytoplasmic streaming, also called cyclosis, is the directed flow of cytosol (the liquid component of the cytoplasm) and organelles that aids in the delivery of organelles, nutrients, metabolites, genetic information, and other materials to all parts of the cell. In prokaryotes, cytoplasm does not show cyclosis or streaming movements.
So, the answer is A.
Answer: They are classified as a glia, it is not related to any other nervous system cell due to it’s distinct embryonic origin .
Therefore, the statement is true.
Answer: The answer would be heredity.
Explanation: This passage is describing the passing of genetic material, and the definition of heredity is the passing on of physical or mental characteristics genetically from one generation to another. This can also be down sexually or asexually.
True. it is essentially ascorbic acid and has the tendency to produce hydrogen ion when in an aqueous solution