Z-DNA in Biological Processes Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What are the three components that make up a nucleotide in DNA?

  • Protein, carbohydrate, lipid
  • Sugar, water, oxygen
  • Sugar, phosphate group, nitrogenous base (correct)
  • Nitrogen, oxygen, hydrogen

In humans, how many pairs of chromosomes are there?

  • 15 pairs
  • 23 pairs (correct)
  • 25 pairs
  • 20 pairs

What is the function of DNA in living organisms?

  • Serving as a blueprint for cellular processes (correct)
  • Controlling cellular respiration
  • Aiding in digestion
  • Regulating blood circulation

What is the range of genes found in the genomes of living creatures mentioned in the text?

<p>500-60,000 genes (D)</p> Signup and view all the answers

Which scientists used X-ray crystallography to study the structure of DNA in 1952?

<p>Rosalind Franklin and Maurice Wilkins (D)</p> Signup and view all the answers

Who first isolated a substance later recognized as DNA from the nuclei of white blood cells?

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

Who proposed the alpha helix structure for proteins in 1951, sparking interest in DNA structure?

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

What are the subunits that compose DNA called?

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

What is the significance of targeting cells with low levels of mtDNA in cancer treatment?

<p>To interfere with energy production pathways in cancer cells (A)</p> Signup and view all the answers

How does the drug 'mitochondrial division inhibitor 1' (mdivi-1) contribute to cancer treatment?

<p>By inhibiting mitochondrial division and depleting mtDNA in cancer cells (B)</p> Signup and view all the answers

What happens to cancer cells with low levels of mtDNA due to the failure in the oxidative phosphorylation system?

<p>They exhibit a shift towards glycolysis for energy production (B)</p> Signup and view all the answers

Why is the loss of mtDNA considered a target for cancer treatment?

<p>To indicate abnormal cellular metabolism in cancer cells (C)</p> Signup and view all the answers

What is the primary form of DNA found in a chromosome?

<p>B-DNA (A)</p> Signup and view all the answers

Which DNA form is rare and not a regulatory element for gene expression?

<p>A-DNA (D)</p> Signup and view all the answers

How are the nitrogenous bases adenine and thymine held together in DNA?

<p>Through two hydrogen bonds (D)</p> Signup and view all the answers

What is the most commonly used type of DNA in forensic medicine?

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

Flashcards are hidden until you start studying

More Like This

DNA to Protein
25 questions

DNA to Protein

CohesiveAgate5503 avatar
CohesiveAgate5503
Biological Information Chapter 6
42 questions
DNA-Binding Proteins and Genetic Regulation
10 questions
Use Quizgecko on...
Browser
Browser