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In eukaryotes, transcription occurs in the nucleus (T/F) Chargaff\'s rules state

ID: 299989 • Letter: I

Question

In eukaryotes, transcription occurs in the nucleus (T/F) Chargaff's rules states that the amount of DNA base pairs (G:C and A:T) varies from species to species.(T/F) Chargaff's rule states that G=C and that A=T. (T/F) Gene expression includes the process of making an RNA transcript from DNA. T/F Gene expression includes the processes of utilizing the transcript in the production of protein. T/F Three types of RNA (mRNA, tRNA & tRNA) are required for translation. T/F The genetic code is nearly universal (used and understood by all life forms on this planet). T/F The primary structure of a protein is encoded by the DNA. T/F The DNA code is considered unambiguous because a given codon only specifies one amino acid. T/F More than one codon can specify the same amino acid. Transcription: is the process of making an RNA copy of the DNA code Is accomplished by complimentary base pairing between DNA and RNA nucleotides Takes place In the nucleus in eukaryotes Requires ribosomes a, b, and c are correct Translation: is the process of making an RNA copy of the DNA code Is accomplished by complementary base pairing between DNA and RNA nucleotides Takes place in the nucleus in eukaryotes Requires ribosomes a, b, c are correct Which of the following statement about the genetic code is NOT true? The genetic code is virtually universal The genetic code is triplet code Multiple codons may encode the same amino acid A given codon will never code for more than one amino acid None (all of the above statements are true)

Explanation / Answer

19. T

DNA makes chromosomes which remain in the nucleus. Transcription occurs in the nucleus therefore.

20. F

Chargaff’s rule is applicable to all life forms, from bacteria to humans.

21. T

As G base pairs with C and A with T, G=C and T=A.

22. T

Gene expression is the process of utilizing the gene to make its final product – Protein. Transcription is ‘included’ in gene expression (as the statement says).

23. T

Gene expression is the process of utilizing the gene to make its final product – Protein. Translation is ‘included’ in gene expression (as the statement says).

24. T

mRNA encodes the protein sequence, tRNAs read the mRNA and rRNAs form the ribosome structure.

25. T

Yes. It is ‘nearly’ universal. There are exceptions though.