100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
MMSC 491 Quiz 1-4 with Correct Answer $12.49   Add to cart

Exam (elaborations)

MMSC 491 Quiz 1-4 with Correct Answer

 0 view  0 purchase
  • Course
  • MMSC491
  • Institution
  • MMSC491

MMSC 491 Quiz 1-4 with Correct Answers In a DNA double helix each type of base forms a stable base pair with only one type of base. When bases on an RNA strand are involved in base pairing, which bases can form stable base pairs with more than one type of base? - ANSWER-Guanine and Uracil Rega...

[Show more]

Preview 3 out of 23  pages

  • November 25, 2024
  • 23
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MMSC491
  • MMSC491
avatar-seller
EmillyCharlotte
MMSC 491 Quiz 1-4 with Correct Answers


In a DNA double helix each type of base forms a stable base pair with only

one type of base. When bases on an RNA strand are involved in base

pairing, which bases can form stable base pairs with more than one type of

base? - ANSWER✔✔-Guanine and Uracil


Regarding the structure of bases in nucleic acids, which, if any, of the

following statements is incorrect? - ANSWER✔✔-Purines carry an amino

group, unlike pyrimidines




True facts were:


-Pyrimidines have a single heterocylic ring consisting of four carbon atoms

plus two nitrogen atoms that are linked to the same carbonyl (-C=O) group


-Purines have two heterocyclic rings, each with two nitrogen atoms


-Thymine = 5-methyluracil.




Copyright ©EMILLYCHARLOTE 2025 ACADEMIC YEAR, ALL RIGHTS RESERVED. Page 1/23

,Regarding the sugar residues in nucleic acids, which, if any, of the

following statements is incorrect? - ANSWER✔✔-The internal sugar

residues in a DNA strand normally have free hydroxyl groups, unlike

those in an RNA strand.




Things that were correct:


-The sugar is always based on a heterocyclic ring that consists of one

oxygen atom and four carbon atoms, one of which is connected to a fifth

carbon atom, the 5? carbon atom.


-Bases are covalently linked to the carbon 1? atoms of the sugars.


-Neighboring sugar residues are linked to each other by a phosphodiester

bond that connects the 3? carbon atom on one sugar to the 5? carbon atom

of its neighbor.


Regarding DNA replication, which, if any, of the following statements is

incorrect? - ANSWER✔✔-DNA replication is said to be semi-conservative

because for each DNA helix only one strand serves as a template for new

DNA synthesis.

Copyright ©EMILLYCHARLOTE 2025 ACADEMIC YEAR, ALL RIGHTS RESERVED. Page 2/23

, Correct facts:


-The two DNA strands of the parental DNA helix are unwound using a

DNA helicase.


-The replication fork marks the point at which DNA is actively being

replicated from a single DNA duplex to form new DNA strands.


-The synthesis of new DNA strands always proceeds in the 5? ? 3?

direction.


Regarding DNA replication and DNA synthesis, which, if any, of the

following statements is incorrect? - ANSWER✔✔-A DNA polymerase

always requires a DNA template to synthesize a complementary DNA.




Correct Facts:


-The leading strand is replicated continuously.


-The lagging strand is replicated discontinuously: the new DNA is

synthesized as short pieces of DNA that must be ligated together.


Copyright ©EMILLYCHARLOTE 2025 ACADEMIC YEAR, ALL RIGHTS RESERVED. Page 3/23

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)

67163 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