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Which one of the following cellular parts is correctly described?
Options
(a) Centrioles – Sites for active RNA synthesis
(b) Lysosomes – Optimally active at a pH of about 8.5
(c) Thylakoids – Flattened membranous sacs forming the grana of chloroplasts
(d) Ribosomes – Those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S)
Correct Answer:
Thylakoids – Flattened membranous sacs forming the grana of chloroplasts
Explanation:
Centrioles serve as basal bodies for cilia and flagella. They are concerned with spindle formation during cell division. Lysosomes are membrane-bound organelles containing many hydrolytic enzymes, which are optimally active at an acid pH (near pH 5). Thylakoids are membrane-bound organelles found within chloroplasts. The thylakoid membrane, forms many flattened, fluid-filled tubules that enclose a single convoluted compartment. These tubules tend to stack on top of each other to forma structure called a granum.
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Topics: Cell Structure and Functions
(413)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Potatoes are cultivated by
- In mammalian eye, the ‘fovea’ is the center of the visual field, where:
- A professor kept some moist seeds in an airtight jar and started lecturing
- Highest cranial capacity is present in
- Bone is connected to muscle with the help of
Topics: Cell Structure and Functions (413)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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