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Photometer
Photometer (Figure shown below) measures the intensity of light. The metallic plate A is a photocell which emits electrons from its surface when light of sufficient frequency impinges Wpon it. The emission of electrons emerging from the irradiated surface constitute the current. This current is measured by a sensitive ammeter which is calibrated to give the amount of current generated as the value of light intensity in metre candle.
Q. What is the notochord? How is this structure formed? The notochord is a rodlike structure that outlines the supporting axis of the embryo and gives birth to the vertebral co
Q. Do squids and octopus have exoskeleton? Squids and Octopus generally do not produce external shell (some squid species can have an internal shell). One cephalopod group the
PEROXISOMES AND GLYOXYSOMES Certain small ovoid unit membrane bound sac like cytoplasmic organelles, resembling lysosomes in size and appearance were isolated from var
Biogeography : This is the distribution of organisms in various parts of the earth. Over periods of ecological changes, biogeography contains the study of plant or animal species i
could you survive on a diet which contain no carbohydrates
Epidemiology: The study of disease in populations. Includes: The Aetiology of the disease Patterns of distribution of the disease How the disease spread
Scope for public nutrition
What are the main negative ions found in living beings? The major anions found in living beings are the chlorine anion (Cl-), the phosphate anion (PO4--), the bicarbonate anion
ROL E OF PROTEIN - Main organic component of body. Unit is amino acid. Polymer of amino acids. Amino acids combine to each other by peptide bond. Formation of bone, t
Diffusion is the spreading of substance molecules from a region where the substance is more concentrated to other region where it is less concentrated. For example, during the boil
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