CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the phase where the cell interacts with other cells
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the resting phase wherein the cell grows in size, replicates its DNA, and prepares for cell division
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the phase where the cell dries up and dies
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the phase where the cell is preparing to exit the body
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Detailed explanation-1: -Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth). At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.
Detailed explanation-2: -During interphase, the cell grows and DNA is replicated. During the mitotic phase, the replicated DNA and cytoplasmic contents are separated and the cell divides.
Detailed explanation-3: -G2 Phase: This is also called the gap phase. Here the cell resumes cell growth and prepares for cell division. Mitochondria and chloroplast divide during this phase. So, the correct answer is option c, ‘no visible changes occur in the nucleus’.
Detailed explanation-4: -In G1, cells accomplish most of their growth; they get bigger in size and make proteins and organelles needed for normal functions of DNA synthesis. Here, proteins and RNAs are synthesized, and, more especially the centromere and the other components of the centrosomes are made.
Detailed explanation-5: -A cell grows during the G1 phase of the cell cycle. During this phase, more organelles are produced, a high amount of protein synthesis occurs and the volume of the cytoplasm increases. The cell continues to grow further in the G2 phase.