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NEET 2012
Exam
NEET
Year
2012
Subject
Botany
Chapter
Cell - The Unit of Life

NEET 2012 · Botany · Cell - The Unit of Life

Which one of the following cellular parts is correctly described?

Which one of the following cellular parts is correctly described?

Options

  1. AThylakoids-Flattened membranous sacs forming the grana of chloroplasts
  2. BCentrioles-Sites for active RNA synthesis
  3. CRibosomes-Those on chloroplasts are larger (80 S)(80 \mathrm{~S}) while those in the cytoplasm are smaller (70 S)
  4. DLysosomes-Optimally active at a pH of about 8.5

Correct answer

A. Thylakoids-Flattened membranous sacs forming the grana of chloroplasts

Step-by-step solution

Centrioles are a membranous hollow microcylinders occur in pair and play important role in cell division. Ribosomes in chloroplast are 70 S70 \mathrm{~S} type while those of cytoplasm in eukaryotic cells are 80 S80 \mathrm{~S} type. The enzymes of lysosome (called suicidal bag) function at acidic pH\mathrm{pH} (i.e., 5).
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