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Explain chemical bonds in basic chemistry?
Chemical Bonds : Chemical bonds are forces that join atoms together in a functional unit. There are three types of bonds that can occur between atoms: ionic bonds, covalent bonds, and hydrogen bonds. Ionic bonds hold atoms together in crystals. Ionic bonds are formed when a positively charged atom, usually a metal, completes its outer shell by borrowing elecron(s) from a negatively charged nonmetal. Covalent bonds form when atoms share electrons to form the molecules that compose compounds, substances with different physical and chemical properties than the component atoms. For instance, hydrogen gas and oxygen gas join to form water, a liquid. Hydrogen bonds tend to make water and certain other compounds more cohesive and adhesive. Van der Waals forces and hydrophobic interactions are weak nonpolar associations important in living cells.
What are the elements that constitute the stomata? The Stomata is made of a central opening the ostiole or slit delimited by two guard cells responsible for its closing or open
Chordal Sparing Operation : For sparing both leaflets, an incision is made on the anterior leaflet close to the annulus and then extended centrally and the two segments,
SURGERY FOR CORONARY ARTERY DISEASE : Stenotic coronary artery disease (CAD) is caused by the thickening and narrowing of the coronary arteries (Atherosclerosis). Initially it cau
Amiodarone, quinidine, propafenone, and verapamil may increase digoxin levels up to 100 per cent. It is prudent to measure a blood level after 7-14 days (and at least 6 hours after
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Doppler echocardiojgraphy measures blood flow velocities and direction of blood flow in the heart add great vessels. The characteristics of blood flow are evaluated using both a
Q. Of which substance do elastic fibers of the connective tissue are made? What are few functions of these fibers? The elastic fibers are made of a protein called as elastin.
What factor helps us in identifying the type of bone graft to be used? The following factors help us in identyfying the bone graft to be used: i) Whether graft is osteoinduc
Q. What is the antagonism between the sympathetic and the parasympathetic neural actions? In general the action of the parasympathetic and the sympathetic are antagonistic that
Explain Eicosanoids Eicosanoids are the local hormones formed by body tissues during self-healing responses to stimuli. Eicosanoids are a family of compounds deriv
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