Homology dependent repair system

Assignment Help Biology
Reference no: EM1389944

1. Which of the following enzymes is directly involved in base excision repair mechanism of mutations?
Glycosylases
Cyclic Adenosine Monophosphate
Serines Kinases
Helicases
Alkytransferases
2. Shown below is a list of types of repair systems or repair molecules (a-g) and types of DNA damage or mutations (1-6). On the blank line following each type of damage, write the letter(s) of all repair systems that can repair (or play a role in the repair of) that particular type of damage.
a) Photolyase
b) Base-excision repair
c) SOS repair
d) Alkyltransferases
e) Mismatch repair
f) Homologous recombination
g) Nucleotide-excision repair
1) Alkylation of G residues __________
2) Trinucleotide repeat expansion__________
3) Depurination __________
4) Pyrimidine dimers __________
5) Deamination __________
6) Double-stranded breaks __________

3. Determine which of the following repair pathways do not involve the use of a homology-dependent repair system?
Base excision repair
Photo reactivation repair
Transcription coupled repair
Nucleotide excision repair
Mismatch repair
4. What repair system exists in cells to repair damage of a single base via homology dependent repair? Describe the mechanism of this repair system.
5. Put the following events in order as they occur in recombination according to the "double-stranded-break model."
a. Cleavage of Holliday structures
b. Formation of loop in uncut duplex
c. DNA repair synthesis of second strand
d. Strand invasion
e. Double-strand break of one chromatid
f. Formation of Holliday structures
g. DNA repair synthesis of one strand

Reference no: EM1389944

Questions Cloud

A video journalist is someone who performs all jobs : A video journalist is someone who performs all jobs previously done by a traditional news team - from operating the camera to reporting the story.
Finding class interval : The largest value in a set of data is 160, and the smallest value is 70. If the resulting frequency distribution is to have six classes of equal width, what will be the class interval?
Histogram and frequency distribution : The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of Brumley Statistical Consulting, Inc. during the first quarter of 2004.
Probability of getting a perfect score : What is the probability of getting a perfect score if you were forced to guess at each question?
Homology dependent repair system : Determine which of the following repair pathways do not involve the use of a homology dependent repair system?
Charts of frequency distribution : The following frequency distribution reports electricity cost for sample of 50 two-bedroom apartments in Albuquerque, New Mexico during the month of May last year.
Four-drive theory states that people have a hierarchy : Four-drive Theory states that people have a hierarchy of needs that they progress through as lower level needs are fulfilled.
Determining frequency distribution : Detremine the mean, standard deviation, and variance for this frequency distribution.
Probability of dna evidence - question : At a criminal trial, the prosecutor presents genotypes for three microsatellite loci as evidence. She reports that a DNA sample taken from the crime scene.

Reviews

Write a Review

Biology Questions & Answers

  Find the concentration in mg/ml

A 2.5 mg/ml stock solution was diluted as described in the table below and then the absorbance of each dilution was estimated and presented in the table given below.

  Abdominal and pelvis structures

What error did the new receptionist make that resuled in the insurance company refusing to pay for the hip x-rays describeyour answer

  A virus capsid containing vimentin

Find a virus capsid containing vimentin, your protein of interest, gets into the cell nucleus and is broken down with the DNA being released.

  Produce a pair of epsps in the muscle fiber

If all other variables remain constant, when 2-action potentials enter synaptic terminal and produce pair of EPSPs in the muscle fiber, larger EPSP is produce by the secretion of:

  Echinoderm nervous system development

Was evolutionary pressure that contributed to the echinoderm nervous system development likely due to selection for those animals capable of forward locomotion?

  Understanding the concepts of cell biology

Explain why are carcinomas more common than sarcomas? Describe your favourite new term or concept from this class in brief.

  Green house conditions

There has not been rain for many months. A biologist is driving down the highway and notices that a big number of corn fields have corn that is wilted and short.

  Cross between the purple-flowered plant and white-flowered

In pea plants, allele for purple flowers (P) is dominant to the allele for white flowers (p). In a cross between the purple-flowered plant and the white-flowered plant, all 73 of the offspring plants had purple flowers. Which of the most likely descr..

  Discuss and define bone marrow

Discuss and define bone marrow and the distinctions between red and yellow marrow. Please discuss circumstances under which yellow marrow might convert to red marrow.

  Alcohol consumption and bladder cancer

In a cohort study that found an association between alcohol consumption and bladder cancer, 20,000 middle-aged men were asked about their drinking habits and then tracked for 5-years to watch for development of cancer.

  Why is the frequency of the sickle-cell gene

Why is the frequency of the sickle-cell gene different in North America versus Africa. Now what is your definition of male and female? This is a 26-year-old female with congenital adrenal hyperplasia. What do you say.

  Assume that an enzyme requires an active site

What percent of all the enzyme molecules will have their Cys thiol in the active form at pH 8.6. Some mammals might run or fight when frightened. For both of these examples, illustrate the physiological mechanisms involved in the answer.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd