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Explain the Bunsen Burner?
It is a type of gas burner that gives very hot flame by allowing air to enter at the base and mix with the gas. It is used -
(a) For sterilizing inoculating loop/needle/forcep etc.
(b) For sterilizing mouth of the flask, test tubes and other glass apparatus.
(c) At the time of culturing or transferring the microorganisms to avoid contamination.
Here the sterilization is done with dry heat. If bunsen burner is not available, spirit lamp can be used.
Honeybees are unusual in that male bees (drones) have only one copy of each gene, while female bees have two copies of their genes. That is because drones develop from eggs that ha
Determine requirements of Vitamins at high altitude? It is observed that requirement of vitamins is not different as compared to plains. In humans, exposure to high altitude ha
Photoperiodism was first characterised in : 1. Tobacco 2. Potato 3. Tomato 4. Cotton Tobacco is the first in whic photoperiodism characterised.
methods of isolating and purifying two useful products from microorganisms
What is Non specific defence Non specifi c: These relate to the physical barriers like skin and mucous membrane. They form the first line of defence against entry of mic
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Chromosomes Karl Nageli and Hofmeister observed chromosomes in pollen mother cells of Tradescantia. Chromosome name proposed by Waldeyer. During cell division,
Hardy desert shrubs - having short stem, number of branches and thick leaves. The animals of deserts are primarily arthropods, reptiles, birds and mammals. Large animals are unc
Pneumonia Pneumonia is an inflammatory process in which there is consolidation in lung caused by exudates filing the alveolar spaces. Gas exchange cannot take place in the c
State the term - Focal Seizures A focal seizure begins in one place and then spreads. As for example in a Jacksonian focal seizure, the attack begins with jerking movements in
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