100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
NURS251 Exam Questions and Answers | 100% Pass $12.49   Add to cart

Exam (elaborations)

NURS251 Exam Questions and Answers | 100% Pass

 1 view  0 purchase
  • Course
  • 2024/2025
  • Institution
  • 2024/2025

NURS251 Exam Questions and Answers | 100% Pass A point mutation that changes a codon specifying an amino acid into a stop codon is called a frameshift mutation. nonsense mutation. missense mutation. deletion mutation. - Answer-nonsense mutation The triplet code of CAT in DNA is represented a...

[Show more]

Preview 4 out of 58  pages

  • October 6, 2024
  • 58
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • 2024/2025
  • 2024/2025
avatar-seller
EmillyCharlotte
EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024




NURS251 Exam Questions and Answers |
100% Pass

A point mutation that changes a codon specifying an amino acid into a stop codon is called a




frameshift mutation.




nonsense mutation.




missense mutation.




deletion mutation. - Answer✔✔-nonsense mutation


The triplet code of CAT in DNA is represented as ______ in mRNA and ______ in tRNA, respectively.


Correct!




CAU, GUA




CAU, GTA

Page 1/58

,EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024




CAT, CAT




CAT, GAA - Answer✔✔-CAU, GUA


What is the relationship among genes, DNA, and proteins?




Proteins are the nitrogenous bases that form double strands of DNA in its helical shape.




A gene is a section of DNA that provides the directions for synthesizing a specific protein.




Protein is composed of DNA that is organized into specific gene sequences called amino acids.




DNA is composed of a series of amino acids that provide the directions for synthesizing proteins. -

Answer✔✔-A gene is a section of DNA that provides the directions for synthesizing a specific protein.


What is the expected result of a "nonsense" point mutation?




Page 2/58

,EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024


No change in amino acid sequence and no change in the composition of the protein product




Replacing an amino acid codon with a "stop" codon, resulting in a truncated protein product




Total disruption of the gene reading frame, no production of protein




Replacement of one amino acid with another in the final gene product - Answer✔✔-Replacing an amino

acid codon with a "stop" codon, resulting in a truncated protein product


What is the function of ribosomes (also known as ribosomal RNA) in protein synthesis?




Serves as a transport molecule able to move a specific amino acid to the site of protein synthesis

(peptide chain elongation) in the correct sequence




Serves as the coordinator mechanism to allow proper reading of the mRNA and placement of the correct

amino acid in the sequence by the tRNAs

Page 3/58

, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024




Allows interpretation of the two strands of DNA to determine which is the "sense" strand and which is

the "antisense" strand




Allows further processing of synthesized proteins (post-translational modification in order to ensure that

the final product is physiologically active) - Answer✔✔-Serves as the coordinator mechanism to allow

proper reading of the mRNA and placement of the correct amino acid in the sequence by the tRNAs


Which of the following is not needed for DNA transcription?




Ribosome


Enzymes


Nucleotides


DNA - Answer✔✔-Ribosome


Frameshift mutations




applies to the reading frame (sequence of codons) being changed.

Page 4/58

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller EmillyCharlotte. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

80467 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.49
  • (0)
  Add to cart