Biotechnology: Principles, Processes, and Applications
30 Questions
0 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 major utility of the biological world according to the text?

  • Contributing to human comfort and welfare (correct)
  • Serving as a source of energy
  • Providing raw materials for industries
  • Facilitating transportation systems

Where did Herbert Boyer complete his graduate work?

  • University of Pennsylvania
  • Yale University
  • University of California at San Francisco
  • University of Pittsburgh (correct)

What off-shoot of modern biology changed daily life with products for health and food production?

  • Biotechnology (correct)
  • Genetic engineering
  • Microbiology
  • Botany

Which century did biotechnology emerge as an off-shoot of modern biology?

<p>20th century (B)</p> Signup and view all the answers

What did Herbert Boyer study in E.coli that had especially useful properties?

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

Where did Herbert Boyer take an assistant professorship in 1966?

<p>University of California at San Francisco (A)</p> Signup and view all the answers

What is the specific sequence in a chromosome necessary for the multiplication of any alien piece of DNA in an organism?

<p>Origin of replication (D)</p> Signup and view all the answers

In the context of DNA replication, what is another term used to describe the process of making multiple identical copies of a template DNA?

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

Who linked a gene encoding antibiotic resistance with a native plasmid of Salmonella typhimurium for the first construction of an artificial recombinant DNA molecule?

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

Which molecular tools allowed for the cutting of DNA at specific locations, enabling the construction of recombinant DNA?

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

What role do plasmid DNA play in transferring pieces of DNA in genetic engineering techniques?

<p>Act as vectors (B)</p> Signup and view all the answers

In what way is the malarial parasite transferred into the human body according to the passage?

<p>Through mosquito bites acting as a vector (B)</p> Signup and view all the answers

What is the role of DNA ligase in genetic engineering?

<p>Joins cut DNA molecules together (D)</p> Signup and view all the answers

What term is used to describe the circular autonomously replicating DNA created by joining a foreign DNA segment with a plasmid vector?

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

Which enzyme is responsible for cutting DNA at specific sequences in genetic engineering?

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

What is the purpose of cloning an antibiotic resistance gene in E. coli?

<p>To replicate the gene using the host's enzyme (B)</p> Signup and view all the answers

Which bacterium is closely related to Salmonella and is commonly used to multiply copies of DNA in genetic engineering processes?

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

What are the three basic steps in genetically modifying an organism as mentioned in the text?

<p>Identification of desirable genes, transformation, transferring DNA to progeny (A)</p> Signup and view all the answers

What is the purpose of a restriction endonuclease?

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

How does Hind II recognize where to cut the DNA?

<p>By recognizing a specific sequence of six base pairs (D)</p> Signup and view all the answers

Why do different restriction enzymes recognize different sequences?

<p>They were isolated from different strains of bacteria (A)</p> Signup and view all the answers

What is the naming convention for restriction enzymes?

<p>First letter from genus, second two from species, followed by an indicating number (A)</p> Signup and view all the answers

What distinguishes exonucleases from endonucleases?

<p>Exonucleases cut DNA at specific positions, endonucleases remove nucleotides from ends (B)</p> Signup and view all the answers

Why do restriction enzymes belong to a class of enzymes called nucleases?

<p>They make cuts within the DNA molecules (B)</p> Signup and view all the answers

What is the function of a bioreactor?

<p>To provide optimal growth conditions for the desired product (C)</p> Signup and view all the answers

Why is a stirred-tank reactor usually cylindrical or has a curved base?

<p>To facilitate even mixing and oxygen availability (A)</p> Signup and view all the answers

Which system in a bioreactor ensures small culture volumes can be withdrawn periodically?

<p>Sampling ports system (B)</p> Signup and view all the answers

What is the purpose of downstream processing in biotechnology?

<p>To separate and purify the product (D)</p> Signup and view all the answers

Which process is collectively referred to as downstream processing?

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

What must a product undergo after formulation with suitable preservatives?

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

More Like This

Use Quizgecko on...
Browser
Browser