Physical elements at time of origin of life
Specify the physical elements which have contributed to the great amount of the available energy over the primitive earth during the time of origin of life?
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3.5 billion years ago, water cycle was faster than today, resulting in hard storms having the intense electrical discharges. There was also no chemical protection from ozone layer against the ultraviolet radiation. The temperatures within the atmosphere and over the planet surface were very high. Electricity, radiation and the heat constitutes the large available energy sources.
Write down the mechanism explained by the Darwin which eliminates species less adapted to environmental conditions?
Briefly define the term antigen?
How the significance of brain evolved from fishes to the reptiles?
How dissimilar is the simple squamous epithelium from stratified squamous epithelium? Where can such epithelia are found in human body?
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Describe the morphological feature of molluscs subsequent to which the phylum is named? Answer: The term “mollusc” means “soft thing”. Mollus
Explain nucleic acids? Describe the historic origin of this name?
What are several illustrations of movement made by the contraction of sarcomeres of the muscle cells?
Scenario Lucas-TVS is the Leader in Auto Electricals in India today with 50 years experience in design and manufacturing. 4 out of 5 vehicles rolled out daily are fitted with Lucas-TVS products. The company has man
Define the terms imago and nymph?
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