PATHOLOGY MCQ
CELL DAMAGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The components are unique in every kind of organisms
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the components are the same for all organisms
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The components are the same only for unicellular organisms
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the components are unique in all kinds of organisms that reproduce sexually
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Detailed explanation-1: -Genetic Code Each gene’s code uses the four nucleotide bases of DNA: adenine (A), cytosine (C), guanine (G) and thymine (T)-in various ways to spell out three-letter “codons” that specify which amino acid is needed at each position within a protein.
Detailed explanation-2: -Characteristics of the Genetic Code All known living organisms use the same genetic code. This shows that all organisms share a common evolutionary history. The genetic code is unambiguous. Each codon codes for just one amino acid (or start or stop).
Detailed explanation-3: -The genetic code is (nearly) universal Even in organisms that don’t use the “standard” code, the differences are relatively small, such as a change in the amino acid encoded by a particular codon. A genetic code shared by diverse organisms provides important evidence for the common origin of life on Earth.
Detailed explanation-4: -All of an organism’s genetic material, including its genes and other elements that control the activity of those genes, is its genome. An organism’s entire genome is found in nearly all of its cells. In human, plant, and animal cells, the genome is housed in a structure called the nucleus.