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Which type of cell came first in evolution - the eukaryotic cell or the prokaryotic cell?
This is an interesting problem of biological evolution. The most accepted hypothesis asserts that the simpler cell, the prokaryotic cell, appeared earlier in evolution than the more difficult eukaryotic cell. The endosymbiotic hypothesis, for instance, affirms that aerobic eukaryotic cells appeared from the mutualist ecological interaction among aerobic prokaryotes and primitive anaerobic eukaryotes.
Precautions for determination of iodine number of lipids? 1. If using the pipette for transferring the oil, allow the pipette to drain slowly and completely, as oil takes time
Briefly Describe about the hypokalemia? Hyperkalemia occurs when serum K levels are greater than 5 1n ML. High plasma K results in cardiac arrhythmias. A K level of 8.0 m MIL c
Discuss in short about soil " The collection of natural bodies in the Earth's surface, in places modified or even made by man of Earthy materials, containing living matter an
(a) What effect does alcohol have on reaction time? (b) What other short-term effects does alcohol have? (c) What long-term effects can result from an exce
Concerning the nitrogen-containing bases that participate in nucleotides, what is the difference among DNA and RNA? In DNA nucleotides can be formed of adenine (A), thymine (T)
The atomic number of the isotope 238U of uranium is 92. The nucleus of this isotope contains a) 184 protons, 92 electrons, and 54 neutrons. b) 92 protons and 146 neutrons. c) 92 pr
LARYN X - Study of larynx is known as Laryngeology. In man it is more prominent than woman known as Adam's apple. It is sound producing organ. At its base trachea presen
What are blood enzymes? Enzymes are proteins that take out chemical reactions (as opposed to structural enzymes). Most of the detectable enzymes in the blood come from the seve
What is Chromosome Mapping in phenotypic trait? Chromosome Mapping : By noting how often a gene segment associated with a specific phenotypic trait crossed over during meios
What are the classes in Phylum coelenterata?
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