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Molecular Biology-מעבדה רפואית

בנוי על הקוויזים של קלייטוס דיוויס כל התמונות והשאלות עם זכויות יוצרים שלו ואין כל כוונה לגנוב קרדיט זה הקורס הראשון שקליי מעביר בעצמו ולכן השאלות הן אך ורק שאלות שהוא כתב ולא שאלות משיחזורים ישנים למינהם. יצירת הקוויז-ר.ג

#BGU #מעבדה רפואית

193 שאלות
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מנהלים:

Ron Goldenberg

Discuss, Learn and be Happy דיון בשאלות

פתור אותי פתור עם חברים הוסף שאלה

Complete the following sentence. Termination of eukaryotic transcription usually:

שאלה #54914

		occurs 10-50 bp before the AATAAA polyadenylation signal.
		occurs 10-50 bp after transcribing the AATAAA polyadenylation signal.
		requires a change in the protein composition of the RNA polymerase transcription complex.
		None of these is correct.
		is due to activity of the rho termination factor.
		is due to the cleavage of the nascent RNA by a nuclease associated with the polyadenylation complex.

נערך לפני 4 חודשים Eden Barabi

מיין לפי

Shown is Gene Y. +1 marks the start of transcription. Open boxes are introns. Filled boxes are untranslated (grey) and coding (black) exon sequence. Gene Y is

שאלה #54915

		not possibly categorised from the information given
		a eukaryotic protein-coding gene
		a eukaryotic tRNA gene
		a prokaryotic protein-coding gene
		a prokaryotic tRNA gene

נערך לפני 3 שנים Eden Barabi

מיין לפי

Tevel Bruckner 2 נקודות · יותר מ-6 חודשים

מוניטין: 45

זו טעות. התשובה היא גן מקודד חלבון באאוקריוטי.

Ran Unikel 0 נקודות · יותר מ-6 חודשים

מוניטין: 45

תודה.

(USMLoid) You have found a mutant yeast strain that stops growing when the temperature rises above 35 °C. After 24 hours at 36 °C you find that the cells are completely missing all tRNAs, but other types of RNA are present. Which of the following genes is mostly likely to bear the mutation?

שאלה #54916

		RNA PolII
		RNU1
		RNA PolIII
		The TBP gene
		RNA PolI

נערך לפני שנתיים Eden Barabi

מיין לפי

The locations of splice sites in newly transcribed protein-encoding RNAs are marked for use by

שאלה #54917

		sequence-specific RNA-binding proteins
		base-pairing with complementary small RNAs
		the addition of modified bases during transcription
		post-transcriptional base editing
		Transfer of sequence-specific DNA-binding proteins from DNA to RNA during transcription

מיין לפי

You have obtained a sample of a small DNA fragment containing a gene. You transcribe mRNA from this DNA and purify it. You then separate the two strands of the DNA and analyze the base composition of each strand and of the mRNA. You obtain the following data: mRNA: 11% A, 37% C, 29% G, 0% T, 22% U Strand 1: 12% A, 38% C, 27% G, 23% T, 0% U Strand 2: 24% A, 27% C, 38% G, 11% T, 0% U Which strand of the DNA is the template strand?

שאלה #54918

		There is too little information provided to tell
		Strand 2
		Both strands 1 and 2
		Neither strand 1 or 2
		Strand 1

מיין לפי

Match the features labeled in the diagram with the names in the following list. i. 5' end of DNA ii. 3' end of DNA iii. 3' end of RNA iv. coding strand v. sense strand vi. template strand vii. 5' end of gene viii. 3' end of gene ix. 5' end of RNA

שאלה #54919

		A - ii, B - ix, C - ii, D - v, E - vi.
		A - viii, B - ii, C - ix, D - v, E - vi.
		A - vii, B - iii, C - i, D - v, E - vi.
		A - vii, B - ii, C - ix, D - vi, E - v.
		A - i, B - iv, C - iii, D - v, E - iv.
		A - viii, B - iii, C - i, D - vi, E - v

נערך לפני 3 שנים Eden Barabi

מיין לפי

In contrast to eukaryotic mRNA prokaryotic mRNA:

שאלה #54920

		has a poly A tail
		requires splicing enzymes
		has 7-methylguanosine at the 5' end
		is synthesized with introns
		can be polycistronic

מיין לפי

Eukaryotic mRNAs are often:

שאלה #54921

		polyadenylated
		monocistronic
		polycistronic.
		spliced.
		translated as they are being made

מיין לפי

This is an important step in translation. It is mediated by:

שאלה #54922

		IF-3
		EF-Tu
		EF-G
		nothing.
		IF-1
		IF-2

מיין לפי

You have found an E. coli that is mutant at the gene encoding EF-Tu. The only effect of the mutation is to decrease the rate of hydrolysis of EF-Tu-GTP. The effect of this mutation will most likely be:

שאלה #54923

		decrease in the rate of transcription.
		decrease in the accuracy of translation.
		decrease in the rate of translation.
		Termination of translation before reaching a stop codon.
		increase in the rate of transcription.
		Failure to terminate translation at stop codons.
		increase in the rate of translation.

נערך לפני 3 שנים Ester Stotland

מיין לפי

פתור אותי פתור עם חברים הוסף שאלה

Molecular Biology-מעבדה רפואית

Discuss, Learn and be Happy דיון בשאלות

Complete the following sentence. Termination of eukaryotic transcription usually:

Shown is Gene Y. +1 marks the start of transcription. Open boxes are introns. Filled boxes are untranslated (grey) and coding (black) exon sequence. Gene Y is

(USMLoid) You have found a mutant yeast strain that stops growing when the temperature rises above 35 °C. After 24 hours at 36 °C you find that the cells are completely missing all tRNAs, but other types of RNA are present. Which of the following genes is mostly likely to bear the mutation?

The locations of splice sites in newly transcribed protein-encoding RNAs are marked for use by

Match the features labeled in the diagram with the names in the following list. i. 5' end of DNA ii. 3' end of DNA iii. 3' end of RNA iv. coding strand v. sense strand vi. template strand vii. 5' end of gene viii. 3' end of gene ix. 5' end of RNA

In contrast to eukaryotic mRNA prokaryotic mRNA:

Eukaryotic mRNAs are often:

This is an important step in translation. It is mediated by:

You have found an E. coli that is mutant at the gene encoding EF-Tu. The only effect of the mutation is to decrease the rate of hydrolysis of EF-Tu-GTP. The effect of this mutation will most likely be:

בקשה לשינוי התשובה / תיקון שאלה gavel

בקשה למחיקת השאלהmood_bad

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