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The packaging of chromatin at a higher l...

The packaging of chromatin at a higher level requires an additional set of proteins that collectively are rerferred to as

A

Non - histone chromosomal proteins

B

Small nuclear ribonucleoprotein (SnRNP)

C

Nucleoplasmin protein

D

Ribophorin protein

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The correct Answer is:
A
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Go through the following statements: (i) a typical nucleosome contains 400 bp of DNA helix. (ii) The positively charged DNA is wrapped around the negatively charged histoned octamer to form a structure called nucleosome. (iii) Histones are rich in the basic amino acid residues asparagine ad valine (iv) The packaging of chromatin at higher level requires additional set of proteins that collectively are referred to as nonhistone chromosomal proteins. Find out the wrong statements:-

Assertion :- Packaging of chromatin at higher lever required additional set of proteins. Reason : Non histone chromsomal proteins provide scaffold for packaging of chromatin.

Which of the following statement is true for the packaging of DNA in eukayotes? A. DNA is packaged with a set of basic protein called histone. B. Histone contain negatively charged amino acid in its side chain. C. DNA packed with histone octamer are called nuclesome. D. Nuclesome is further packed to form chromatin fibre.

Breeding crops with higher levels of vitamins and minerals or higher protein and healthier fats, the most practical means it improve public health, is called:

Biofortification involves breeding crops with higher levels of vitamins, proteins, minerals and healthier fats. Which of the following vegetable crop has been produced by IARI that has been enriched with Vitamin C?

Shri Ltd'. Was carrying on a business of packaging in Delhi and earned good profits in the past years. The company wanted to expand its business and required additional funds. To meet its requirements the company issued equity shares of Rs. 30,00,000. It purchased a computerised machine for Rs. 20,00,000. It also purchased raw material amounting to Rs. 2,00,000. During the current year, the Net Profit of the company was Rs. 15,00,000. Find out 'Cash flow from Operating Activities' from the above transactions.

The amount of energy released when an electron is added to an isolated gaseous atom to produce a monovalent anion is called electron affinity of first electron affinity or electron gain enthalpy. The first electron affinity is given a negative sign as the addition of an electron to a neutral atom is an exoergic process. The addition of electron to A^(-) requires energy to overcome the force of repulsion. Thus, the second electron affinity is an endoergic process. The magnitude of electron affinity depends on a number of factors such as (i) atomic size (ii) effective nuclear charge (iii) screening effects (iv) half and fully filled orbitals and (v) shape of orbital. In general, electron affinity increase as the atomic radii decrease in a period. However, there are exceptions when the atoms have stable configuration. In a group, electron affinity decreases as the size increases. However, the members of 3rd period have somewhat higher values than the members in the 2nd period of the same subgroups. Which of the following has least electron affinity?

The amount of energy released when an electron is added to an isolated gaseous atom to produce a monovalent anion is called electron affinity of first electron affinity or electron gain enthalpy. The first electron affinity is given a negative sign as the addition of an electron to a neutral atom is an exoergic process. The addition of electron to A^(-) requires energy to overcome the force of repulsion. Thus, the second electron affinity is an endoergic process. The magnitude of electron affinity depends on a number of factors such as (i) atomic size (ii) effective nuclear charge (iii) screening effects (iv) half and fully filled orbitals and (v) shape of orbital. In general, electron affinity increase as the atomic radii decrease in a period. However, there are exceptions when the atoms have stable configuration. In a group, electron affinity decreases as the size increases. However, the members of 3rd period have somewhat higher values than the members in the 2nd period of the same subgroups. The electron affinities of halogens are: F =- 332, CI =- 349, Br =- 324,I =- 295 kJ mol^(-1) The higher value of CI as compared to that of F^(-) is due to:

NTA MOCK TESTS-NTA NEET SET 43-BIOLOGY
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  4. Which of the following is a family of monocots ?

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  9. Which of the following is not a fundamental character of a chordate?

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  16. Which of the following statements is not correct about Hisardale ?

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  18. Which of the following cells product factors that help in maturation o...

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