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Q. From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer?
Blood cells have a mesodermal embryonic origin and other organs made from mesoderm are covering serous membranes like the peritoneum, the pericardium and the pleura, muscles, cartilages, adipose tissue, dermis, kidneys, ureters, bladder, urethra, gonads, blood and lymph vessels, bones.
Antibiotic resistance is the result of natural selection mutations, the only source of new genetic information available for bacteria. Rapid reproduction rates variation in bacteri
Q. In sickle cell anemia, a hereditary disease, there is replacement of one amino acid by another in one of the four polypeptide chains of hemoglobin. In this case are all of the s
EXCRETIO N IN COCKROACH- Animal is uricotelic. Excretory organs are malphighian tubules. 60-150 in 6-8 groups. In each group 10-15. Yellow coloured, blind tube, open in gut
Louis Pasteur (1860-1862) French): Even after the experiments of Spallanzani, the conflict of a biogenesis and biogenesis continued well into the middle of 19 th century till
Q. What are the major significant organic molecules for living beings? Ans. There are many types of organic molecules that are important for the living beings. Particularl
interpretation of liver photomicrograh slides
Q. Explain Reproducibility of Venricular Ectopy ? Experimentally it has been shown that PVCs are frequently seen at the inception of acute ischaemia. Thus, exercise induced PVC
Q. Antimicrobial Barriers - proliferation of microorganisms? The first barrier is the integument: a physical barrier to protect the food, e.g., the shell on eggs, the skin on
Sheep and goats The disease is readily transmissible to human being from goats, and is known as Malta fever, Mediterranean fever or undulant fever. The chief causal agent is B
Explain about the Serengeti Ecosystem? The Serengeti ecosystem, one of the most stunning biological communities in the world, was devastated by the introduction of rinderpest f
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