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Structure of HIV
HIV is a spherical enveloped virus of about 90-120 nm diameter .In nucleocapsid is icosahedral. Its genome consists of a single stranded RNA filament segmented into two identical filaments and associated with a reverse transcriptase enzyme. The envelope is comprised of a lipid bilayer derived from host cell membrane, and projecting. Knoblike glycoprotein spikes with pedicles formed virus coded glycoproteins.
In studies of human body, which of the below terms is used to describe a very rapid heart rate or pulse rate? Is it: a) Tachycardia b) Bradycardia c) Cardiosis d) Myoc
What is the most accepted hypothesis about the origin of life on earth? How does it compare to the other main hypotheses? The heterotrophic hypothesis is the strongest and most
If water dousing, homeopathic cures, and so on work for just me but not for anyone else, it is still science.
Why Iron is required as a part of haemoglobin? As a part of haemoglobin, iron is required for the transport of oxygen, to all cells in the body. Thus, haemoglobin is critical f
How is opening and closing of stomata controlled? Describe a) Why is the length of a food chain in an ecosystem generally limited to 3 - 4 trophic levels? Explain with an examp
To study the conditions essential for the germination of seeds:- In the diagram below a having seeds on cotton wool with air, warmth, but no water; b has water, warmth, but no
Explain the repair mechanisms of brain Scientists are just beginning to understand how these innate repair mechanisms might be harnessed to treat disease. On leading edge of th
Louis Pasteur (1860-1862) French): Even after the experiments of Spallanzani, the conflict of a biogenesis and biogenesis continued well into the middle of 19 th century till
Encystment – Protozoan Encystment is characteristic of the life cycle of many protozoan. The protozoan secretes a thickened envelope (cyst) around itself and becomes inactive
A n t h r a x It is also known as spleenic fever. The peracute form of the disease in animals is manifested by sudden death with oozing of dark-coloured blood from body o
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