Let us now look at individual cell organelles to understand their structure and functions.
Which of the following statements are correct regarding the comparison of onion peel cells (plant cell) and human cheek cells (animal cell)? S1: Both onion peel cells and human cheek cells are enclosed by a distinct cell wall as their outermost boundary. S2: The cytoplasm in both cell types is the main arena of cellular activities and contains non-membrane bound organelles like ribosomes. S3: Plastids, which are responsible for diverse functions including photosynthesis and storage, are characteristic features of onion peel cells but are absent in human cheek cells. S4: A large central vacuole, occupying up to 90% of the cell volume, is a unique feature of mature plant cells like onion peel cells, while animal cells like human cheek cells typically lack them or have small, temporary ones. S5: Centrioles, which play a crucial role in cell division, are present in almost all animal cells including human cheek cells, but are generally absent in plant cells.
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