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
"The reduction in the number of chromosomes to half the normal count occurs during meiosis."
Meiosis is a type of cell division that results in the production of four gamete cells. To develop egg and sperm cells for sexual reproduction, this process is necessary. This division occurs in sexually reproducing organisms.
During meiosis, four haploid cells with one copy of each chromosome are produced after two rounds of division. The genetic material from the maternal and paternal copies of each chromosome is combined to produce new combinations. Following this, during fertilization, the haploid cells (made by a male and a female) fuse to form a cell with two copies of each chromosome, referred to as a zygote.
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Photosynthesis uses -light energy- and creates oxygen and glucose
Control fertiliser usage; this action will show a high decrease in the effect of harmful growth of algae
How will it work?
The fertilisers are chemical or biological mixtures that provide the essential inorganic and organic nutrients that a soil ordinarily lacks yet that plants need for healthy growth and crop production.
Increased fertiliser use has the potential to contaminate both land and water. Due to the addition of fertiliser minerals to the nearby water body as a result of surface runoff, plants and algae flourish excessively due to the availability of nutrients. Eutrophication is the term for this phenomenon.
As a result, fertilisers should only be used in limited quantities to prevent eutrophication.
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