11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A

Published on: 26/09/2019
Botany - Biomolecules
Download Tamil Nadu 11th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
Starch is not a single material, but is regarded as a homopolysaccharide prove the statement.
2.
Why are starch and glycogen more suitable than glucose as storage product?
3.
Are reducing sugars different from non-reducing sugars? Yes means give reason.
4.
What is tRNA?
5.
6.
Distinguish between Reducing sugars and Nonreducing sugars.
7.
What is meant by activation energy?
8.
What is a prosthetic group?
9.
Distinguish between nitrogenous base and a base found in inorganic chemistry.
10.
Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown & one blank component " X" in it.

| Category | Compound |
| Cholesterol | Guanine |
| Amino acid | NH2 |
| Nucleotide | Adenine |
| Nucleoside | Uracil |
1.
1. Starch consists of two components (i.e) Unbranched spirally coiled amylose molecules and branched amylopectin molecules.
2. Both are glucose polymers, hence it is called as homopolysaccharide.
2.
Starch and glycogen are branched polysaccharides made up of glucose units. Therefore, they occupy lesser space and are less bulky. Moreover, they can be hydrolysed to glucose whenever required.
3.
1. Yes. Reducing sugars have a free aldehyde or ketone group. They reduce cupric ions of Benedicts or Fehling's solution to form cuprous ions. Eg: Glucose.
2. Non Reducing sugar do not have a free aldehyde or ketone group. They do not respond to Benedicts / Fehling's solution. Eg: Sucrose.
4.
1. It is a RNA which translates the code from mRNA and transfers amino acids to the ribosome to build proteins.
2. It is highly folded into an elaborate 3D structure and comprises about 15% of total RNA
5.
6.
| S.No | Reducing Sugars | non-reducing Sugars |
|---|---|---|
| 1 | The sugars have a free aldehyde or ketone group The sugars can reduce cupric ions of Benedict's or Fehling's solution to forming brick red precipitate cuprous ions | A free aldehyde or ketone group is absent. They do not reduce cupric ions of Benedict's or Fehling's solution to cuprous ions |
| 2 | Eg: Glucose. | Eg: Sucrose. |
7.
In a enzyme catalysed reaction, the starting substance is the substrate. It is converted to the product. The substrate binds to the specially formed pocket in the enzyme - the active site, this is called lock state and this minimum energy needed is called the activation energy.
8.
Prosthetic groups are organic molecules that assist in catalytic function of an enzyme. Flavin adenine dinucleotide (FAD) contains riboflavin (vit B2), the function of which is to accept hydrogen.
9.
| Nitrogenous base | Inorganic base |
| In nitrogenous base the basic character is because of lone pair electron called lewis base | Inorganic base is because of hydroxyl ion that is Arrhenius base |
| Eg: Pyridine, Pyrimidine | Eg: NaOH |
10.
| Category | Compound |
| Nucleoside | Uracil |
A Nitrogenous base is linked to pentose sugar through a n-Glycosidic linkage and forms a nucleoside.
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
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Physics

Chemistry

Maths

Biology

Economics

Physics

Chemistry

History

Business Maths and Statistics

Computer Science

Accountancy

Computer Applications

History

Computer Technology

Commerce

Computer Applications

Computer Technology

Tamil

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