NEET · Biology · STD 11 - 8. Cell the unit of life
Microtubules are the constituents of
- A centrioles, spindle fibres and chromatin
- B centrosome, nucleosome and centrioles
- C cilia, flagella and peroxisomes
- D spindle fibres, centrioles and cilia
Answer & Solution
Correct Answer
(D) spindle fibres, centrioles and cilia
Step-by-step Solution
Detailed explanation
(d) : Microtubules are unbranched hollow submicroscopic tubules of protein tubulin which develop on specific nucleating regions. It can undergo quick growth or dissolution at their ends by assembly or disassembly of monomers. They are present in the cytoplasm as well as in specialised structures like centrioles, basal bodies, cilia or flagella, sensory hair, equatorial ring of thrombocytes, spindle apparatus, chromosome fibres, nerve processes, sperm tails, axostyle of parasitic flagellates, fibre system of Stentor, cytopharyngeal basket of Nassula, etc.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Biology
- Match the following columns and select the correct option.
\((a)\quad(b)\quad(c)\quad(d)\)Column \(- I\) Column \(- II\) \((a)\) Clostridium butylicum \((i)\) Cyclosporin \(- A\) \((b)\) Trichoderma polysporum \((ii)\) Butyric Acid \((c)\) Monascus purpureus \((iii)\) Citric Acid \((d)\) Aspergillus niger \((iv)\) Blood cholesterol lowering agent NEET 2020 Easy - Given below are two statements : One is labelled as Assertion \(A\) and the other is labelled as Reason \(R\):
Assertion \(A\) : Late wood has fewer xylary elements with narrow vessels.
Reason \(R\) : Cambium is less active in winters.
In the light of the above statements, choose the correct answer from the options given below :NEET 2023 Medium - Which of the following characteristics is incorrect with respect to cockroach?NEET 2021 Medium
- Which of the following is correct about viroids?NEET 2020 Easy
- You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two ?NEET 2014 Medium
- How many hotspots of biodiversity in the world have been identified till date by Norman Myers ?NEET 2016 Medium
More PYQs from NEET
- The rate of a reaction quadruples when temperature changes from \(27^{\circ} \mathrm{C}\) to \(57^{\circ} \mathrm{C}\). Calculate the energy of activation. Given \(\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}, \log 4=0.6021\)NEET 2024 Medium
- An energy of \(484\,J\) is spent in increasing the speed of a flywheel from \(60\,rpm\) to \(360\,rpm\). The moment of inertia of the flywheel is \(.............\,kg - m ^2\)NEET 2022 Easy
- Match List \(I\) with List \(II\)
Choose the correct answer from the options given below:List \(I\) List \(II\) \(A\). Two or more alternative forms of a gene \(I\). Backcross \(B\). Cross of \(F_1\) progeny with homozygous recessive parents \(II\). ploidy \(C\). Cross of \(F_1\) progeny with any of the parents \(III\). Allele \(D\). Number of chromosome sets in plant \(IV\). Test cross NEET 2024 Medium - \(2\left( C _{51} H _{98} O _6\right)+145 O _2 \rightarrow 102 CO _2+98 H _2 O +\) energy
The Respiratory Quotient (RQ) of a biomolecule, used for respiration, as per the above equation would be :NEET 2026 Hard - If the half-life \(\left(t_{1 / 2}\right)\) for a first order reaction is 1 minutes, then the time required for \(99.9 \%\) completion of the reaction is closest to:NEET 2025 Easy
- If the monochromatic source in Young's double slit experiment is replaced by white light, thenNEET 2024 Medium