Concept explainers
The clear, structureless gel in a cell is its
- a. nucleoplasm.
- b. protoplasm.
- c. cytoplasm.
- d. neoplasm.
- e. cytosol.

Introduction:
All living organisms are made up of cells and its products. Cells are regarded as the simplest unit (structural and functional) of life. Cellular membrane, nucleus, and cytoplasm are the three major components of a cell. Cellular membrane, which surrounds the entire cell, is composed of phospholipids and proteins. The nucleus is bound by a nuclear membrane, and it possesses the genetic material of the cell. The cytoplasm consists of organelles, cytoskeleton (filaments and tubules), and inclusion bodies.
Answer to Problem 1TYR
Correct answer:
The organelles, cytoskeleton (filaments and tubules), and inclusion bodies present in the cell are dispersed in a clear, structure-less gel known as cytosol. Therefore, option e is correct.
Explanation of Solution
Justify reasons for the correct statement:
Cytosol (cell substance) or intracellular fluid (ICF) is a clear, gel-like substances that is mostly made up of water, water-soluble molecules, and dissolved ions.
Option (e) is given as “cytosol”.
Cytosol is a structure-less, gel-like substance, which fills the cytoplasm of the cell.
Hence, option (e) is correct.
Justify reasons for the incorrect statements:
Option (a) is given as “nucleoplasm”.
Nucleoplasm is a structure-less, gel-like material that fills the nucleus. Hence, it is a wrong answer.
Option (b) is given as “protoplasm”.
Protoplasm denotes all living materials that are present in the cell enclosed by the cellular membrane (inside and outside the nucleus). The protoplasm inside and outside the nucleus is known as nucleoplasm and cytoplasm, respectively. Hence, it is a wrong answer.
Option (c) is given as “cytoplasm”.
The protoplasm that is enclosed within the cellular membrane and outside the nucleus of the cell is called as cytoplasm. Cytoplasm consists of organelles, cytoskeleton (filaments and tubules), and inclusion bodies. Hence, it is a wrong answer.
Option (d) is given as “neoplasm”.
The abnormal tissue growth resulting from rapid and uncoordinated cell division is referred to as neoplasm. Hence, it is a wrong answer.
Hence, options (a), (b), (c), and (d) are incorrect.
The clear, structure-less gel-like substance present in the cell is called as the cytosol.
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