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Biology NEET - XI: Chapter 8- Cell the unit of life Part 5

Biology25 CardsCreated about 2 months ago

This deck covers key concepts from Chapter 8 of the NEET Biology syllabus, focusing on cell organelles, ribosomal structures, and cytoskeletal fibers.

Which leucoplast stores starch?

Amyloplast
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Key Terms

Term
Definition
Which leucoplast stores starch?
Amyloplast
Which leucoplast stores proteins?
Aleuroplast
Which leucoplast stores fats?
Elaioplast
What are known as Palade particles?
Ribosomes
What is known as organelle within organelle?
Ribosomes
Which is the smallest cell organelle?
Ribosome

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TermDefinition
Which leucoplast stores starch?
Amyloplast
Which leucoplast stores proteins?
Aleuroplast
Which leucoplast stores fats?
Elaioplast
What are known as Palade particles?
Ribosomes
What is known as organelle within organelle?
Ribosomes
Which is the smallest cell organelle?
Ribosome
At what concentration of Mg2+ ions, the dimer of ribosomes is formed?
0.001 M
How many types of proteins are found in prokaryotic ribosomes?
55 types of proteins
Which RNA form the 50s ribosomal unit?
23s rRNA, 5s rRNA
Which RNA forms the 30s ribosomal unit?
16s rRNA
How many types of proteins form the eukaryotic ribosome?
73 types of proteins
Which RNA form the 60s ribosomal unit?
28s rRNA, 5s rRNA, 5.8s rRNA
Which RNA form the 40s ribosomal unit
18s rRNA
Which rRNA are ribozymes?
23s rRNA and 28s rRNA
Which RNA is extranuclear in origin?
5s rRNA
Which cytoskeletal fibres are thin, solid and contractile?
Microfilaments
Which protein forms microfilaments?
Actin proteins
Which cytoskeletal fibre is responsible for pseudopodia formation and cytolpasmic streaming?
Microfilaments
Which cytoskeletal fibre is strong, solid and contractile?
Intermediate protein fibre
Which protein forms the intermediate protein fibre?
Keratin
Which cytoskeletal fibres are present in desmosomes?
Intermediate protein fibres
Which cytoskeletal fibres form the nuclear basket?
Intermediate protein fibres
Which cytoskeletal fibre is hollow, broad and non contractile?
Microtubules
Which protein forms the microtubules?
1 α-tubulin + 1 β-tubulin
How many protofilaments come together to form a singlet microtubule?
13 protofilaments