Asked in ETEA MDCAT 2005 2005Moderate

The growth and reproduction of eukaryotic cell is dependent upon its

Correct answer: B. Nucleus

  • A. Cytoplasm
  • B. Nucleus
  • C. Vacuoles
  • D. Nuclear pores

Explanation

The cytoplasm is the gel-like fluid inside the cell. It is the medium for chemical reactions. It provides a platform upon which other organelles can operate within the cell. Hence, A is incorrect. The nucleus is a spherical-shaped organelle that is present in every eukaryotic cell. The nucleus is the control center of eukaryotic cells. It is also responsible for the coordination of genes and gene expression. Therefore, B is the correct answer. Vacuoles are membrane-bound cell organelles that are primarily involved in storing nutrients and water for the cell. Hence, C is incorrect. Nuclear pores are protein-lined channels in the nuclear envelope that regulate the transportation of molecules between the nucleus and the cytoplasm. Hence, D is incorrect.

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About Cytoplasmic Organelles

Cytoplasmic organelles are the specialized structures suspended in cytoplasm, including mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles and centrosomes. Questions compare their structures and functions in animal and plant cells, including chloroplasts and the role of the endomembrane system in transport and secretion.

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