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Q. Is pollution always caused by humans?
In the most cases pollution is caused by human activity. Other species and some abiotic factors though can also pollute an ecosystem. For instance, the red tide is created by proliferation of some algae and volcanic dust is a consequence of the internal activity of the planet.
Determine about the microtubules The microtubules are hollow tubular structures formed by a special arrangement of two proteins called the alpha and beta tubulins. The microtu
Q What is genetic code? Genetic code is the key for the conversion of the DNA nucleotide sequences and thus the RNA nucleotide sequences into amino acids sequences that will co
Genetics Genetics is the study of heredity. It is an ancient discipline. At least 4000 years ago, in Sumeria, Egypt and other parts of the world, farmers recognized that they
Blood from the fetus circulates through the placenta. a) What substances pass (i) from the maternal to the fetal blood, (ii) from the fetal to the maternal blood?
There are three levels of diversity viz. genetic, species and ecosystem diversity. In effect, these levels cannot be separated. Each is important, interacting with a nd influencin
Ask In what ways does over gazing lead to soil erosion?
Define Descending type of paper chromatography? In descending chromatography, the movement or flow of mobile phase is in downward direction. In this technique the solvent is ke
Cell secretion is the elimination to the exterior of substances formed by the cell (for example, hormones, mucous, sweat, etc.)
Q. Effect on Microbial Growth of pH? Every microorganism has a minimal, a maximal, and an optimal pH for growth. In general, bacteria grow in the pH range of 6.0-8.0, yeasts 4
Do fishes there an open or closed circulatory system? How many chambers does a fish heart have? How does blood flow all through the fish body? As in every vertebrate the circul
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