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Explain about the Chemical Carcinogens?
Chemicals have been shown to be carcinogenic. Some are naturally occurring components of plants and microbial organisms. Some are synthetic products created by industry. Chemical carcinogens can be classified into two general categories based on the ability of compounds to bind to DNA.
Compounds that bind to DNA are genotoxic, whereas compounds that are carcinogenic, but have no evidence of DNA binding are termed epigenetic. Some of the major chemical carcinogens are alkylating agents, acylating agents, and aromatic amines. Aflatoxin B, Betel nuts, nitrosamines and amides, vinyl chloride, nickel, chromium insecticide and fungicide are also some of the chemical carcinogens. Tobacco, smoking, drug abuse are also known to cause cancers.
Heart of cockroach: In cockroach, heart is situated in pericardial sinus. It has13 chambers These are one behind the other. Each chamber opens into preceeding one. The
In most axons, myelin sheath is interrupted at intervals of about 1 millimeter or more. These interruptions are known as: a) Collaterals b) Nodes of Ranvier (pron: ron-vee-ay)
Q. Illustrate Dilated cardiomyopathy? It is a disease of unknown etiology, affecting myocardium. Its diagnosis is established by presence of left ventricular dilatation and sys
The major factor which controls glycogen metabolism in the liver is the concentration of phorphorylase alpha. Certainly, this enzyme catalyzes the limiting step of glycogen breakdo
Explain the biomechanics of cantilevers The biomechanics of cantilevers need to be understood. It has been found that when a three unit prosthesis is supported by two implants
a) Describe the electron transport system. Where does it happen in a mitochondrion and what is the role of oxygen in it ? b) Explain the events that happen in the human heart du
What is a recessive gene? With the birth of a child, it gets its genes from both parents. Some genes 'override' other genes. Using hair color as instance: If single parent i
Many of the free energy free during the oxidation of glucose to CO 2 is retained in the decreasing coenzymes NADH and FADH 2 producing while glycolysis and the citric acid cycle.
Algae have cell wall made up of: 1. Cellulose, galactans and mannans 2. Hemicellulose, pectins and proteins 3. Pectins, cellulose and proteins 4. Cellulose, hemicellulo
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