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Helga [31]
3 years ago
12

What is the main difference between an endothermic reaction and an exit hermit reaction

Biology
1 answer:
OverLord2011 [107]3 years ago
6 0
In exothermic rxn heat is evolved
in endothermic rxn heat is consumed
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The increasing trend of sexual assault and violence strongly influences the growth of the number of nurses involved in both fore
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Forensic nursing involved psychological use of mind to treat one's problem.

Sexual assault and violence are problems 80% treated spiritually cause one's mind maybe damaged due to fear.

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Plants have glucose, but what else does the plant need in order to build carbohydrates or to carry out photosynthesis?
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They need to have sunlight and carbon dioxide in order to produce glucose and oxygen

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Describe the Watson and Crick model of DNA structure. How did it fit the data provided by Chargaff and the X-ray diffraction pat
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DNA model given by Watson and Creek in the year of 1953 gave a very detailed study regarding the structure of B DNA which is valid till date and is essentially corroborating with Chargaff's data and Xray diffraction pattern.

<h3><u>Explanation:</u></h3>

The DNA is the most common nucleic acid found in the living organisms as a genetic material. As stated by Watson and Creek, this DNA contains a double helical structure with two sugar phosphate backbones and the nitrogen bases getting projected from it inwards. The backbones are formed of ribose sugar and phosphate and joined together with a phosphodiester bond. The ribose sugar is attached to phosphates at its 3' and 5' Carbon atoms. The nitrogen bases found in DNA are Adenine, Guanine, Thymine and Cytosine. The Adenine has two hydrogen bonds with thymine and guanine has 3 hydrogen bonds with cytosine.

Each full turn of a helix is 34A and each base pair is 3.4A apart. The distance between two strands of DNA is 20A.

Chargaff's rule regarding the equal amount of adenine and thymine as well as guanine and cytosine is matching with this structure. All the other rules also do match with this DNA structure.

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A scientist is testing a new plant food to see if it causes plants to grow faster. The scientist tests two plants with the new p
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The independent variable is the new plant food
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stems and leaves

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