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Five Kingdom Classifications
Biology, as you know, is the study of life, living things, and their relationship to one another and to their environment. This branch of Science has affected almost every aspect of our life. Advances in this area have resulted in such diverse products as vaccines and antibiotics. It has made possible the transplantation of organs and the manipulation of genes. At present biologists are working on such vital aspects as increasing food production, improv.ing environmental quality, finding clues to health and longevity and combating dreaded ailments like heart disease, AIDS and cancer.
Scientists working in this field have also increased our awareness of the complexity of the environment and the delicate balance that exists among all living and nonliving things. In the present unit we examine how living things differ from non-living things; we also examine how living things vary among themselves and discuss the various systems of classification. In the other units of this course, we will focus mainly on diversity of certain groups of animal which are rather lowly organized, called non-chordates.
What are Pure Culture Techniques? Microorganisms can be isolated from various natural environments like soil, food, water, sewage, decomposing matter and even from infectious m
Is crossing over important for the diversity of biological evolution? The Sexual reproduction and the recombination of linked genes (crossing over) are, along with mutations, t
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Explain what happens when the cell membrane or plasma membrane ruptures or breaks down? Ans) When cell membrane ruptures Ions leek out and unless repaired in time the cell will
ISOZYMES : an enzyme having different molecular forms but catalyzing the same reaction.
Q. What is nidation? In which phase of the menstrual cycle does nidation occur? Nidation is the implantantion of the embryo in the uterus and Nidation takes place around the 7t
FAT SOLUBLE VITAMINS Vitamin A Vitamin A may be of most practical importance in cattle feed. Vitamin A is essential for normal growth, reproduction, maintenance of epithel
Why after the passage of animals from the aquatic to the terrestrial habitat does the abandonment of the ammoniotelic excretion occur? Ammonia is a highly toxic molecule if not
What is Thermoregulation in Cold? Heat production parallels the increase in O 2 uptake, the magnitude of which depends on the muscle mass .engaged in slivering or work and the
The condition in which there is a DECREASE in the number of white blood cells in humans is termed as: a) Leukocytosis (pron: lew-kO-sigh-toe-sis) b) Leukopenia (pron: lew-kO
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