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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.
ONSE T OF PUBERTY IN MALE Puberty is the period when reproductive organs become functional. It is attained at the age of 13-16 yrs. It is stimulated by testasteron. I
In a Population that is in Hardy-Weinberg equilibrium, the frequency of the recessive Homozygous genotype is 0.49. The frequency of individuals Homozygous for the Dominant allele i
what is the mode of nutrition for worms?
Hexokinase, that catalyzes the first irreversible step of glycolysis, is inhibited by glucose 6-phosphate. Thus when PFK is inhibited and fructose 6-phosphate builds up an
Adenylate cyclase in the liver cell membrane Glucagon activates adenylate cyclase in the liver cell membrane and thus turns on glycogenolysis and reduces glycogenesis. Insu
Virus envelope is known as: 1. Capsid 2. Virion 3. Nucleoprotein 4. Core Capsid
Derived Proteins These are not naturally occurring proteins and are obtained from simple proteins by the action of enzymes and chemical agents, heat, mechanical shaking, UV or
A number of protein-coding genes are active in all cells and are required for so- called house-keeping functions such as the enzymes of glycolysis, the citric acid cycle and the pr
What does radial symmetry mean? What is the type of symmetry found in chordates? Which are other phyla of the animal kingdom that present species with radial symmetry? Radial
What is the problem that the theory of evolution and its rival theories try to solve? The problem that the theory of simply evolution, or evolution, and its rival theories try
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