sun
are you having a stroke
the milkyway is an entire galaxy
orion is a mythical shape we made in the sky
Answer:
Part A - Increases the mechanical strength of protein
Part B - Disulfide bonds in the BPTI cysteines residues prevent protein from changing its structure and form
Explanation:
Remaining part of question
Part B
Most globular proteins are denatured and lose their activity when briefly heated to 65 degree C. However, globular proteins that contain multiple disulfide bonds often must be heated longer at higher temperatures to denature them. One such protein is bovine pancreatic trypsin inhibitor (BPTI), which has 58 amino acid residues in a single chain and contains three disulfide bonds. On cooling a solution of denatured BPTI, the activity of the protein is restored. What is the molecular basis for this property?
Solution
Part A
Disulfide bonds are covalent bonds which are much stronger than the non-covalent forces in protein i.e hydrogen bonds, weak wander vaal forces etc. Being strong in nature, the disulfide bonds causes cross linking between the chains of protein. This cross linking develops strong bonds that enhance the stiffness and hardness of the protein thereby increasing its mechanical strength. Stability increases because the entropy decreases.
Part B
The disulfide bonds with in the BPTI’s three adjacent cysteines, prevents the protein from changing its structure to any stable form and hence prevent it from folding and unfolding completely
Answer: The question is incorrect, below is the correct question
Which DNA FINGERPRINTING technique examines the length variation of DNA repeat sequences in human DNA?
The correct answer to the question is option D
mtDNA (mitochondrial DNA) analysis
Explanation: DNA fingerprinting technique is a laboratory technique used by geneticists.it entails placing of DNA samples into wells,these wells are then placed in a slab of gels and thereafter passing a current through the gel.This is done to ascertain the uniqueness of a DNA pattern and thus be able to differentiate people of same species.
There are several methods of DNA fingerprinting as outlined in the options given with the question.
In mtDNA (mitochondrial DNA) analysis,The Genetic samples are extracted from the biological materials, these samples extracted are total genomic DNA like hair,tooth or samples of blood, Several copies of these genomic DNA are then produced using a polymerase chain reaction and flanking primers inorder to examines the length variation of DNA repeat sequences in human DNA.
Answer
Turgor potential also known as pressure potential develop in plant cell when water enter to cell through process of osmosis and vacoul is filled with water which exert pressure on cell wall from inside.
Role of pressure potential
It is one of the most important property of plant cell that help in maintain the proper shape of ell and keep plant straight or rigid. It also help in keeping water body that is required for plant under stress condition. Similarly primary cell wall become enlarge and grow in length due to turgor pressure.
When a cell is plasmolysed mean water move out from cell then it cause welting and bending of plant body. So it is pressure potential that keep away plants from such condition.
<span>CuSO4(aq)+2NaOH(aq)->Cu(OH)2(s)+Na2SO4
the ability of bases to release sodium ions into solution
the ability of bases to release hydrogen ions into solution
the ability of a base to react with carbonate or bicarbonate
the ability of a base to react with a soluble metal salt
In this reaction, the base (</span>2NaOH) reacts with a soluble salt of the metal copper (Cu).
Base molecules have a specific ability to accept a hydrogen ion, usually from an acid or an acidic salt, but In this reaction, the base (2NaOH) reacts with a soluble salt of the metal copper (Cu).