59. Which of the following is an example of one codon? a. CATT b. GCCATT c. CAG

Question

59. Which of the following is an example of one codon? a. CATT b. GCCATT c. CAG d. CCGUAA 60. In all cells a gene encodes for a. a protein (via mRNA) b. a tRNA c. an rRNA. d. a protein, tRNA, or rRNA depending on the specific gene 61. Which of the following is NOT correct regarding DNA and RNA synthesis? a. b. c. d. The overall direction of chain growth is from the 5' to 3' end Both processes require an RNA primer to begin. The template strand is antiparallel to the newly synthesized strand. DNA is the template for both DNA and RNA synthesis 62. The flow of biological information begins with a. DNA replication. b. RNA transcription c. mRNA translation d. transcriptional regulation. 63. The two strands of the DNA double helix are held together by a. 5' to 3' attraction b. hydrogen bonds between nucleotide bases C. COdons. d. peptide bonds between nucleotide bases. 64. In complementary base pairing of DNA, adenine pairs with cytosine always pairs with (or in RNA) and a. guanine / uracil / thymine b. uracil /thymine /guanine c. thymine guanine /uracil d. thymine /uracil / guanine 65. The function of RNA polymerase is to a. catalyze the formation of phosphodiester bonds between deoxyribonucleotids. b. catalyze the formation of phosphodiester bonds between ribonucleotides c. cleave mRNA to remove introns. d. activate tRNAs

Explanation / Answer

59. c. CAG

A codon is made up of 3 nucleotides.

60. d. a protein, tRNA, or rRNA depending on the specific gene.

A gene encodes for proteins, tRNA and even rRNA, it depends on the type of gene.

61. b. Both processes require an RNA primer to begin.

RNA synthesis does not require an RNA primer to begin.

62. a. DNA replication.

Flow starts from - DNA replication > transcription > translation.

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