Z-DNA in Biological Processes Quiz

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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?

500-60,000 genes Signup and view all the answers

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

Rosalind Franklin and Maurice Wilkins Signup and view all the answers

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

Friedrich Miescher Signup and view all the answers

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

Linus Pauling Signup and view all the answers

What are the subunits that compose DNA called?

Nucleotides Signup and view all the answers

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

To interfere with energy production pathways in cancer cells Signup and view all the answers

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

By inhibiting mitochondrial division and depleting mtDNA in cancer cells 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?

They exhibit a shift towards glycolysis for energy production Signup and view all the answers

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

To indicate abnormal cellular metabolism in cancer cells Signup and view all the answers

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

B-DNA Signup and view all the answers

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

A-DNA Signup and view all the answers

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

Through two hydrogen bonds Signup and view all the answers

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

Nuclear DNA Signup and view all the answers

Z-DNA in Biological Processes Quiz

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