Bio 191 LEC 1st Exam | ACCURATE
QUESTIONS AND DETAILED ANSWERS |
GUARANTEED PASS | GRADED A | LATEST
UPDATE 2024-2025 WITH 100+ QUESTIONS
The products of mitosis are:
A. two genetically distinct cells.
B. one nucleus containing twice as much DNA as the parent nucleus.
C. four genetically identical nuclei
D. four nuclei containing half as much DNA as the parent nucleus.
E. two genetically identical nuclei
- ANSWERS-E. two genetically identical nuclei
DNA replication occurs:
a. throughout mitosis
b. during a portion of mitosis
c. throughout metaphase
d. during a portion of metaphase
e. throughout interphase
f. during a portion of interphase
- ANSWERS-f. during a portion of interphase
Chromatids...
a. are formed by DNA replication
b. each have a kinetochore
,c. each have a centromere
d. that are attached (called "sister chromatids") are identical in sequence
e. remain attached until mitotic anaphase
- ANSWERS-all of the above
What is the correct order of events for one cell cycle, starting from a cell in the G1 phase of the
cell cycle? (not all steps are specified).
a. cytokinesis, movement of chromatids to spindle poles, interphase
b. attachment of DNA to microtubules(via kinetochores), movement of chromatids to spindle
poles, DNA replication
c. DNA replication, attachment of DNA to microtubules(via kinetochores), cytokinesis
d. none of these are correct
- ANSWERS-c. DNA replication, attachment of DNA to microtubules(via kinetochores),
cytokinesis
chromosome condensation is a process that helps prepare for
a. the Gap phases of the cell cycle
b. DNA replication
c. mitosis
d. cytokinesis
- ANSWERS-c. mitosis
Which of the following is/are true for DNA, but not RNA (check all that apply):
a. stays in the nucleus
b. is composed of four different nucleotides covalently linked together
c. nucleotides base pair in an anti-parallel orientation
d. adjacent nucleotides are linked by phosphodiester bonds
e. polymers are assembled in the nucleus
, - ANSWERS-a. stays in the nucleus
Which of the following are differences between a DNA Replication Bubble and a Transcription
Bubble is:
a. whether nucleotides are added to the 3' or 5' end
b. whether both templates are copied or just one
c. whether the assembled nucleotides remain base-paired to the template strand
d. whether the nucleotides used for synthesis are in triphosphate form
e. whether the bubble moves in one direction or both directions
- ANSWERS-b. whether both templates are copied or just one, c. whether the assembled
nucleotides remain base-paired to the template strand ,e. whether the bubble moves in one
direction or both directions
Retroviruses do not follow the "central dogma" of DNA → RNA → protein because they:
A. contain RNA that is used to make DNA.
B. contain DNA that is used to make more RNA.
C. contain DNA that is used to make tRNA.
D. contain only DNA as the genetic material.
E. do not contain either DNA or RNA as the genetic material.
- ANSWERS-A. contain RNA that is used to make DNA.
retro viruses inject their DNA that they copied from RNA into the host cell an changed the
genome of the host cell
Promoters
a. are sequences found in mRNA but not in other RNA molecules
b. are sequences found in primary transcripts but not mature mRNA
c. are not found in primary mRNA nor in mature mRNA
d. none of the above statements are true statements about promoters
The benefits of buying summaries with Stuvia:
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
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
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 qualityexamshut. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $25.49. You're not tied to anything after your purchase.
