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TEMPERATURE
Temperature is a major physical environmental factor which profoundly influences the vital activities of living organisms like, metabolism, growth and reproduction. The primary effect of temperature is on the stability and activities of enzymes which carry out and regulate the biochemical reactions in the cells. Temperature also affects the properties of biomembranes.
We know that there are large temperature differences over the earth to which organisms must adapt. Temperature and availability of water in an area largely determine the types of plants and animals that can grow, survive and reprduce there. Every organism has a certain range of tolerance for temperature delineated by an upper and lower lethal temperature, which vary from species to species. Thus, temperature is one of the factors that limit the geographical distributions of plants and animals. Temperature also indirectly influences the availability of water which itself is an important ecological factor. Before we describe the adaptations in organisms due to temperature stress let us discuss the temperature variation at different latitudes and altitudes and examine the global picture of temperature.
What is Microtubules? Microtubules are the largest intracellular fibers, with a diameter of about 25 nm (2.5 x 10-8 meters). They consist of hollow fibers composed of a protein
THEO R Y OF PANGENESIS - Proposed by Charles Darwin. According this miniature present in the every body cell i.e. called gemmule
Osmotic and Ionic Regulation The ammonotelism, ureotelism and uricotelism are the adaptations of the animals for the removal of toxic nitrogenous wastes and thereby maintain
Q. Functions of Colour in Foods? Let us now look at the different functions of colour in details, which are enumerated herewith: 1. The maturity of many fruits and vegetable
Define Counter Stain - Staining Technique? Finally, the smear is counter stained with a simple basic dye different in colour from crystal violet. Safranin is the most commonly
Table provides you the classification of the living primates. The primate fossil history dates back to 60 million years i.e. to Paleocene times, more specifically to the cretaceous
rRNA (Ribosomal ribonucleic acid) is the RNA part of the ribosome, the cell structure which is the site of protein synthesis in all living cells. The Ribosomal RNA provides a mecha
Primary Egg Envelopes These are the egg envelopes which develop in the ovary between oocyte and follicle cells in the space occupied by the interdigitating microvilli. Such e
Coronal Disassembly - If the existing restoration with marginal defect: - The crown was sectioned through the bucco-occlusaly , Christensen crown remover elevate and remove
scientific names of animals
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