Molecular Biology-מעבדה רפואית

It is the winter solstice. You have been cross country skiing for 2.4 hours and are currently trying to decide whether to take a break or push on to the chateau. Which of the following intervals contains the number of potentially mutagenic events each genome in your body has suffered since you started skiing?

1

Which of the following DNA repair pathways is most tightly coupled to DNA replication?

1

Which of the following mutagens will most likely lead to DNA damage that requires the use of a translesional polymerase for repair.

1

During S-phase in a human cell, the entire genome (approximately 6x109 bp) is copied. The enzymes that copy the DNA are not perfect. As they polymerise the new strands they add the wrong nucleotide approximately 200,000 times. Most of these are fixed, but the fixing is not perfect either. A mistake that is not fixed becomes a mutation. Which of the following is closest to the number of mutations that arise during replication of the human genome?

1

Following recombination, a small region of heteroduplex DNA is generated that contains mismatches. These mismatches are probably due to:

1

In the diagram shown, the triangles indicate the orientation and position of sequence recognized by a site-specific recombinase Cre. Which of the labeled images shows the correct product following recombination?

1

What is the correct association between the recombination events on the left and recombination types on the right.

1

Which one of the following is most correct. Homologous recombination:

1

שאלה #57545

		only occurs in Eukaryotes
		is always initiated by a DNA cleavage event.
		only occurs between homologous sequences
		in eukaryotes only occurs in the germ cells
		always changes DNA sequence
		קליי ביטל את השאלה והוסיף הערה

Core Processes:Recombination Remember homologous recombination was and is primarily and DNA repair mechanism. I removed this question from the quiz. The mismatch between the question wording and question type in Moodle was impossible to fix. The correct answers are: is always initiated by a DNA cleavage event., only occurs between homologous sequences

מיין לפי

Eden Barabi 2 נקודות · יותר מ-6 חודשים

מוניטין: 45

Core Processes:Recombination Remember homologous recombination was and is primarily and DNA repair mechanism. I removed this question from the quiz. The mismatch between the question wording and question type in Moodle was impossible to fix. The correct answers are: is always initiated by a DNA cleavage event., only occurs between homologous sequences

Homologous recombination may be used to repair

1

שאלה #57546

		DNA damage following crossing over during meiosis
		inter-strand base crosslinks
		double-stranded DNA breaks
		incorrectly aligned chromosomes during meiosis
		non-canonical base pairs

מיין לפי

Which type of recombination is most likely to be mutagenic

1

שאלה #57547

		Transposition
		Homologous Recombination
		Site-specific recombination

נערך לפני 3 שנים Eden Barabi

מיין לפי

		30,000 - 3,000,000
		0.03 - 3
		300 - 30,000
		3 - 300

		Photolyase
		Nucleotide Excision Repair
		Base Excision Repair
		Mismatch repair
		Non-homologous End Joining

		S-Adenosyl Methionine
		Ultraviolet light
		Gamma radiation
		Error in replication
		DNA crosslinking agent

		1000
		less than 0.1 (one mistake for every 10 genome duplications)
		10
		100
		1

		All these answers are equally likely.
		mistakes in DNA synthesis during the resolution of the Holliday junction.
		branch migration.
		It is not possible that there are mismatches following recombination.
		mistakes in DNA synthesis during the initial invasion of a double stranded DNA by a single strand of a second homologous sequence.

Molecular Biology-מעבדה רפואית

Discuss, Learn and be Happy דיון בשאלות

שאלה #57538

Which of the following DNA repair pathways is most tightly coupled to DNA replication?

שאלה #57539

Which of the following mutagens will most likely lead to DNA damage that requires the use of a translesional polymerase for repair.

שאלה #57540

שאלה #57541

Following recombination, a small region of heteroduplex DNA is generated that contains mismatches. These mismatches are probably due to:

שאלה #57542

In the diagram shown, the triangles indicate the orientation and position of sequence recognized by a site-specific recombinase Cre. Which of the labeled images shows the correct product following recombination?

שאלה #57543

What is the correct association between the recombination events on the left and recombination types on the right.

שאלה #57544

Which one of the following is most correct. Homologous recombination:

שאלה #57545

Homologous recombination may be used to repair

שאלה #57546

Which type of recombination is most likely to be mutagenic

שאלה #57547

		a-ii, b-i, c-iii, d-i
		a-ii, b-ii, c-iii, d-i
		a-iii, b-ii, c-iii, d-i
		none of these is correct
		a-i, b-ii, c-iii, d-i
		a-i, b-ii, c-iii, d-ii

		Pentimus
		Tertius
		Secundus
		Primus
		Septimus
		Sextus
		Quartimus

Molecular Biology-מעבדה רפואית

Discuss, Learn and be Happy דיון בשאלות

Which of the following DNA repair pathways is most tightly coupled to DNA replication?

Which of the following mutagens will most likely lead to DNA damage that requires the use of a translesional polymerase for repair.

Following recombination, a small region of heteroduplex DNA is generated that contains mismatches. These mismatches are probably due to:

In the diagram shown, the triangles indicate the orientation and position of sequence recognized by a site-specific recombinase Cre. Which of the labeled images shows the correct product following recombination?

What is the correct association between the recombination events on the left and recombination types on the right.

Which one of the following is most correct. Homologous recombination:

Homologous recombination may be used to repair

Which type of recombination is most likely to be mutagenic

בקשה לשינוי התשובה / תיקון שאלה gavel

בקשה למחיקת השאלהmood_bad

בקשה לשינוי התשובה / תיקון שאלה

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