loss of a cell's power of division and growth
The movement of substances across the cell membrane either into or out of the cell
Some featured visible in an electron microscope may not be present in the living cell because process involved in preparation alter or distort the cell content.
The most effective sort of microscopes can detect even individual atoms; these are called electron microscopes. However, because the materials are destroyed by the electrons, these microscopes cannot be utilized to observe living cells.
Instead of using light to image specimens, electron microscopes use a particle stream of electrons. Images captured with an electron microscope have resolutions between 0.2 and 10 nanometers, which is 10 to 1,000 times better than that of a conventional light microscope. Additionally, samples can be magnified with an electron microscope up to two million times, compared to 2,000 by a light microscope.
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Answer:
3
Explanation:
wet mount of elodea( a simple plant)
Answer: 1) Recessive allele is unable to express its effect in the presence of dominant allele WHILE a dominant allele is able to express itself even in the presence of its recessive allele.
2) Recessive allele produces its phenotypic effect only in the presence of a similar allele. E.g; tt is dwarf. WHILE a dominant allele does not require another similar allele to produce its effect on the phenotype. E.g; Tt is tall.
3) Recessive allele forms a defective polypeptide or enzyme so that the expression consists of absence of the effect of dominant allele. E.g; white flower colour in Pea. WHILE a dominant allele can form a complete polypeptide or enzyme for expressing its effects. E.g; red colour of flower in Pea.
Explanation:
