4-L1+
29 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the Central Dogma of Molecular Biology?

  • The flow of information from DNA to RNA to Protein (correct)
  • The flow of information from DNA to Protein to RNA
  • The flow of information from RNA to Protein to DNA
  • The flow of information from Protein to RNA to DNA

Which of the following is an exception to the Central Dogma?

  • Some plants have RNA as their genetic material
  • Some viruses have RNA as their genetic material (correct)
  • Some animals have RNA as their genetic material
  • Some bacteria have RNA as their genetic material

What is reverse transcription?

  • The synthesis of RNA from a DNA template
  • The synthesis of Protein from an RNA template
  • The synthesis of Protein from a DNA template
  • The synthesis of DNA from an RNA template (correct)

What is reverse transcription used for in the laboratory?

<p>To make many copies of a specific genetic sequence for analysis (B)</p> Signup and view all the answers

What is the enzyme responsible for reverse transcription called?

<p>Reverse transcriptase (D)</p> Signup and view all the answers

What is the term used to describe the DNA synthesized from an RNA template during reverse transcription?

<p>cDNA (A)</p> Signup and view all the answers

What is the term used to describe the combination of reverse transcription followed by PCR amplification?

<p>RT-PCR (D)</p> Signup and view all the answers

What is the basic unit of biological information?

<p>Gene (A)</p> Signup and view all the answers

What is the term used to describe the genetic composition of an individual?

<p>Genotype (D)</p> Signup and view all the answers

What is the term used to describe the observable characteristics of an individual?

<p>Phenotype (C)</p> Signup and view all the answers

Which of the following is NOT a component of a nucleotide?

<p>Amino acid (D)</p> Signup and view all the answers

What type of nitrogenous base is found in DNA but not in RNA?

<p>Thymine (B)</p> Signup and view all the answers

Which of the following statements about the structure of DNA is NOT correct?

<p>The phosphodiester bonds in DNA are formed between the 5' and 3' carbon atoms of adjacent nucleotides. (C)</p> Signup and view all the answers

What is the correct base pairing in DNA according to the Watson-Crick model?

<p>Adenine pairs with Thymine, and Guanine pairs with Cytosine (C)</p> Signup and view all the answers

What is the primary function of nucleic acids?

<p>To store and express genetic information (C)</p> Signup and view all the answers

Which of the following statements about the structure of RNA is correct?

<p>RNA contains the nitrogenous base uracil. (C)</p> Signup and view all the answers

What is the primary difference between purine and pyrimidine nitrogenous bases?

<p>Purine bases have a two-ring structure, while pyrimidine bases have a one-ring structure. (A)</p> Signup and view all the answers

What is the function of the phosphate group in a nucleotide?

<p>To form the backbone of the nucleic acid chain (D)</p> Signup and view all the answers

Which of the following statements about the polarity of nucleic acid chains is correct?

<p>The polarity of nucleic acid chains is determined by the direction of the phosphodiester bonds. (B)</p> Signup and view all the answers

What is the purpose of hydrogen bonding between the nitrogenous bases in DNA?

<p>To stabilize the double-helix structure of DNA (B)</p> Signup and view all the answers

According to the Watson and Crick model, what is the relationship between the two polynucleotide chains of DNA?

<p>The two chains are complementary in base composition. (D)</p> Signup and view all the answers

What is the Chargaff Rule regarding the base ratios in DNA?

<p>The amount of guanine should be equal to the amount of cytosine, and the amount of adenine should be equal to the amount of thymine. (D)</p> Signup and view all the answers

What is the spatial relationship between the two strands in the DNA double helix?

<p>The two strands are twisted (coiled) around each other in a right-handed double helix. (A)</p> Signup and view all the answers

What is the significance of the major and minor grooves in the DNA double helix?

<p>The bases in these grooves are exposed and can interact with proteins or other molecules. (B)</p> Signup and view all the answers

What is the significance of the negative charge on the DNA molecule?

<p>The negative charge facilitates the binding of specific proteins to the DNA. (C)</p> Signup and view all the answers

What is the main function of the complementary nature of the two polynucleotide DNA strands?

<p>All of the above. (D)</p> Signup and view all the answers

What is the difference between the A-form and the B-form of the DNA double helix?

<p>All of the above. (D)</p> Signup and view all the answers

What is the structural difference between DNA and RNA?

<p>All of the above. (D)</p> Signup and view all the answers

What is the primary function of RNA according to the passage?

<p>RNA is used to direct the process of protein synthesis. (B)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser