100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
MCB 3020 Exam 2 Questions with Correct Answers CA$26.83   Add to cart
Quickly navigate to
Preview
  2.  
  3. MCB 3020
  4.  
  5. MCB 3020

Exam (elaborations)

MCB 3020 Exam 2 Questions with Correct Answers
 7 views  0 purchase
  • Course
  • MCB 3020
  • Institution
  • MCB 3020

What's the correct order of bacterial cell division? 1- Invagination of the plasma membrane 2- Z ring is anchored to the plasma membrane 3- Cell wall-synthesizing machinery is assembled 4- Formation of the Z ring 5- Constriction of the Z ring - Answer-4- Formation of the Z ring 2- Z ring is...

[Show more]

Preview 3 out of 21  pages

Document information

  • October 9, 2024
  • 21
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • mcb 3020 exam 2 questions with correct answers
  • whats the correct order of bacterial cell divisio

Written for

  • MCB 3020
  • MCB 3020

Seller

avatar-seller
lectknancy

Reviews received

Content preview

MCB 3020 Exam 2 Questions with
Correct Answers
What's the correct order of bacterial cell division?

1- Invagination of the plasma membrane
2- Z ring is anchored to the plasma membrane
3- Cell wall-synthesizing machinery is assembled
4- Formation of the Z ring
5- Constriction of the Z ring - Answer-4- Formation of the Z ring
2- Z ring is anchored to the plasma membrane
3- Cell wall-synthesizing machinery is assembled
5- Constriction of the Z ring
1- Invagination of the plasma membrane

In the Caulobacter crescentus chromosome partitioning system, the ParB/parS complex
is present on the chromosome _____. - Answer-Near the origin of replication

The MinCDE complex directs _____ to the middle of the cell to position septation
properly. - Answer-Z ring formation

In general, which of the following microbes types tends to have a single circular
chromosome composed of DNA? - Answer-Bacteria

In rapidly growing E. coli cells, DNA replication takes about _____. - Answer-40 minutes

Increasing the size of peptidoglycan during cell division is a challenge because _____. -
Answer-Its strength must be maintained when new subunits are added

In the example of interdomain communication between Rhizobium species and
leguminous plants, the advantage of the successful interaction for the plant is _____. -
Answer-secretion of amino acids by the Rhizobium

The cytoskeletal protein _________ is needed for vibrioid cells to develop and maintain
the curvature that characterizes their shape. - Answer-Crescentin/CreS

Which two of the following proteins are components of the E. coli divisome?

FtsA
FtsZ
SlmA
ParB
MinCDE - Answer-FtsA
FtsZ

,Where does peptidoglycan synthesis start in bacteria? - Answer-Cytoplasm

The Z ring is positioned in the center of the cell by which protein complex? - Answer-
MinCDE

Which two of the following terms describe peptidoglycan? - Answer-Rigid & Elastic

Which protein is not important in maintaining the cell shape of vibrios? - Answer-MinC

Vibrioid-shaped cells derive their cell shape from _____. - Answer-asymmetric cell wall
growth

When fresh growth medium is inoculated with a microbial culture there is typically a
period of adaptation called the ________ phase. - Answer-Lag

Biologists express the degree to which water is available to microbes in solution as
______. - Answer-Water Activity

To maintain a neutral internal pH, which type of organism might use a proton transporter
to pump protons out of the cell? - Answer-Acidophile

Which of the following best describes the movement of AHL (N-acylhomoserine lactone)
across the plasma membrane of a bacterial cell? - Answer-It is freely diffusible.

Bacteria and archaea mainly reproduce by ________ _________ - Answer-Binary
Fission

The cell cycle is ______. - Answer-the events from formation of a new cell through the
next division

Crescentin, the shape-determining protein of vibrioid cells, localizes to _____. - Answer-
one side of the cell

How many origins of replication are found on most bacterial chromosomes? - Answer-
One

The ParA protein of Caulobacter crescentus _____ to orient the positioning of the newly
replicated chromosome. - Answer-localizes near the opposite pole

Which process forms cross walls between daughter cells during cytokinesis? - Answer-
Septation

What is the correct description of the process known as cytokinesis? - Answer-division
of the cytoplasm into the daughter cells

, The cytoskeletal protein FtsZ polymerizes to form the ________ _________ that marks
the site of septum formation in bacteria and archaea. - Answer-Z Ring

The Z ring is inhibited from forming at any location other than at midcell by the
movement of the _____ proteins. - Answer-MinCDE

A mechanism called ________ ________ ensures that the Z ring forms only after most
of the daughter chromosomes have segregated. - Answer-Nucleoid Occlusion

The component of the bacterial cell envelope that protects the cell from swelling and
bursting from turgor pressure is ____________. - Answer-Peptidoglycan

The group of enzymes responsible for peptidoglycan synthesis are notable for their
binding to ______. - Answer-Penicillin

Which group of enzymes is required for limited peptidoglycan degradation, so that new
units can be inserted during cell growth? - Answer-Autolysins

Which two of the following statements are evidence in support of the importance of
MreB in determining cell shape in rod-shaped bacteria?

1- Coccoid-shaped cells lack proteins in the MreB family.
2- MreB proteins polymerize to form filaments that act at the plasma membrane.
3- MreB proteins interact directly with the FtsZ ring at midcell.
4- Rod-shaped cells in which MreB has been depleted assume a spherical shape. -
Answer-1- Coccoid-shaped cells lack proteins in the MreB family.
4- Rod-shaped cells in which MreB has been depleted assume a spherical shape.

The part of the microbial growth curve when cells are growing and dividing at their
maximal rate is called the ________________ phase. -
Answer-Exponential/Log/Logarithmic

The part of the microbial growth curve when cells reach their maximum density is called
the _________ phase. - Answer-Stationary

The part of the microbial growth curve when cell density decreases is called the
______. - Answer-Death phase

The length of time that it takes a culture to double in cell number is called the _______
_______. - Answer-Doubling time

The growth rate constant, k, is expressed in units of ______. - Answer-Generations per
hour

he ParA protein of Caulobacter crescentus ________ to orient the positioning of the
newly replicated chromosome. - Answer-localizes near the opposite pole

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 lectknancy. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$26.83. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

75632 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
CA$26.83
  • (0)
  Add to cart