20 Questions
Which of the following is NOT a component of a nucleotide in DNA?
Ribose sugar
What type of bond is present between guanine and cytosine in DNA?
Triple bond
What is the role of DNA in protein synthesis?
Serving as a template for mRNA synthesis
Which nucleic acid has a double helix structure?
DNA
How are the two strands of DNA arranged with respect to each other?
Antiparallel
What is the function of transfer RNA (tRNA) in protein synthesis?
It transfers amino acids to the ribosomes for protein synthesis
What is the role of messenger RNA (mRNA) in the process of protein synthesis?
It carries the genetic information from DNA to the ribosomes
Which of the following is true about ribosomal RNA (rRNA)?
It is a single-stranded molecule 100 to 3000 nucleotides long
During which step of protein synthesis is the genetic information from DNA copied into mRNA?
Transcription
What is the significance of a series of three adjacent bases in an mRNA molecule, known as a codon?
Each codon codes for a different amino acid carried by tRNA
Which of the following statements is true about DNA?
DNA is involved in the synthesis of RNA
What is the significance of the hydrogen bonds between guanine and cytosine in DNA?
They contribute to the stability of the double helix structure of DNA
What is the role of RNA in protein synthesis?
RNA carries genetic information from DNA to the ribosomes
Which type of bond is formed between the phosphate group and a sugar in the polynucleotide molecule?
Phosphodiester bond
In DNA, what components make up each nucleotide?
Thymine, deoxyribose sugar, and a phosphate group
Which type of RNA carries the genetic information to the ribosomes?
mRNA
What is the function of transfer RNA (tRNA) in protein synthesis?
Transfers amino acids to the ribosomes
What is the significance of a series of three adjacent bases in an mRNA molecule, known as a codon?
It codes for a specific amino acid
During which step of protein synthesis is the genetic information from DNA copied into mRNA?
Transcription
What is the role of ribosomal RNA (rRNA) in protein synthesis?
Forms the structure of the ribosomes
Test your knowledge about DNA and RNA, the genetic code, heredity instructions, and components of genes in this quiz based on the lecture by Dr. Hossam Elsawy.
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