8. In catabolism Complex or polymeric molecules are degraded into small molecule

Question

8. In catabolism Complex or polymeric molecules are degraded into small molecules and energy is consumed Polymeric and complex molecules are synthesized from small molecules and energy is released Complex or polymeric molecules are degraded into small molecules and energy is released Polymeric and complex molecules are synthesized from small molecules and energy is consumed A. B. C. D. Which of the following organelle is considered to be the result of endosymbiosis A. ribosome B. Smooth Reticulum C. nucleus D. mitochondria 9.

Explanation / Answer

Answers: 8. Option C: Complex or polymeric molecules are degraded into small molecules and energy is released

9. Option D: Mitochondria

Explanation:

8. Catabolism (Breaking up process) is the process where macromolecules are broken down into small molecules with release of energy. So. option A which states that energy is consumed is not a correct answer

The energy thus lliberated during catabolism process is used to form macromolecules which is termed as Anabolism (building up process) So, option B is defines anabolism except for the wrong statement that energy is released. In anabolism energy is consumed

Option D is the statement related to Anabolism as discussed above

Hence, option C is the correct statement. (Catabolic and anabolic activities are together called as metabolism)

9. Mitochondria called as power house of the cell is said to be the evolution of prokaryotic cells. The engulfing vesicle is represented as outer mitochondrial membrane.

In plant cells, chloroplast is the result of endosymbiosis.

The remaining options in the given question are not related to endosymbiosis. Ribosome is evolved from the RNA whose evidence was drawn from LUCA(Last universal common ancestor). Smooth endoplasmic reticulum, rough endoplasmic reticulum, golgi apparatus, lysosomes are evolved from the invagination of plasma membrane. Nuclear pore complexes and nuclear membranes are coevolved with endomembrane system.

Thus, the correct answer is D. Mitochondria

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