Plastids used in storing proteins are called as:
1. Amyloplasts
2. Aleuroplasts
3. Elaioplasts
4. Chromoplasts
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA centriole-like structure, from which the cilium and the flagellum emerge, is the:
1. Centrosome
2. Basal body
3. Axoneme
4. Vimentin
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe outer membrane of the nucleus:
I. is continuous with the Endoplasmic reticulum
II. does not bear ribosomes.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the centromere is situated close to the end of a chromosome, it is called as:
1. Metacentric
2. Submetacentric
3. Acrocentric
4. Telocentric
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCentrioles, cilia, flagella, and basal bodies have remarkably similar structural elements and arrangements. This leads us to which of the following as a probable hypothesis?
1. Disruption of one of these types of structure should necessarily disrupt each of the others as well.
2. Loss of basal bodies should lead to loss of all cilia, flagella, and centrioles.
3. Motor proteins such as dynein must have evolved before any of these four kinds of structure.
4. Natural selection for motility must select for microtubular arrays in circular patterns.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe presence of cholesterol in the plasma membranes of some animals.
1. enables the membrane to stay fluid more easily when cell temperature drops.
2. enables the animal to remove hydrogen atoms from saturated phospholipids.
3. enables the animal to add hydrogen atoms to unsaturated phospholipids.
4. makes the membrane less flexible, allowing it to sustain greater pressure from within the cell.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyProkaryotic cells have something unique in the form of:
1. Inclusion bodies
2. Plasmids
3. Cell wall
4. 70 S ribosomes
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGas vacuoles allow cyanobacteria to:
1. Store carbon dioxide for assimilation
2. Control their buoyancy
3. Provide anaerobic conditions to nitrogenase
4. Eliminate toxic ammonia
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe lipid component of the plasma membrane mainly consists of:
1. Triglycerides
2. Cholesterol
3. Phosphoglycerides
4 Proteins
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCarotenoid pigments are found in:
I. Chloroplasts
II. Chromoplasts
III. Leucoplasts
(1) Only I
(2) Only I and II
(3) Only II
(4) I, II and III
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology