CELL BIOLOGY. Please answer the following questionsand please please please be 1

Question

CELL BIOLOGY. Please answer the following questionsand please please please be 100% sure on them. if not, plz dont answer it. thank you so much.

44. Which of the following statements about the genetic code is correct? a. There may be multiple codons that code from the same amino acid b: The genetic code is identical in almost all living organisms c. Each codon will only code for a specific amino acid or stop signal d The stop codons do not have matching transfer RNA e. All of the above 45. Ribosomes get made in the and are composed of Nucleolus, snRNP RER, SARNPS & p d.

Explanation / Answer

Answer to the first (number 44.) of all the questions posted:

The correct option is "e. All of the above".

Reason/explanation:

There are multiple cordons coding for one particular amino acid, e.g. GCU, GCC, GCA, GCG code for alanine.

Genetic code is universal as one codon codes for the same particular amino acid irrespective of organism (e.g. E. coli or Homo sapiens).

Each codon only code for one particular amino acid, e.g. AUG code for methionine only.

Three stop codons are UAA, UAG, UGA which do not code for any amino acid because they do not have tRNA with complementary anti-codon.

Answer to other questions:

45. a

33. a

34. d

48. b

49. e

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