64 Answered Questions for the topic DNA

12/11/16

Transcription - How to do it ?
Transcribe the following DNA strand into two single stranded pieces of RNA:   A A T G C C G T A T A G C T C A T G C T A T T A C G G C A T A T C G A G T A C G A T   please explain how to do this 
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Dna Biology

12/10/16

Pieces of DNA ( please explain how you got the answers )
This is a piece of DNA showing the sites in which restriction enzymes bind to and cut DNA into fragments, and the size of the DNA between the restriction enzyme sites.:       2kb              ... more
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11/21/16

The DNA in a human chromosome is about 10 cm in length.
The DNA in a human chromosome is about 10 cm in length. A typical human cell has a diameter of 15um, and its nucleus occupies 30% of the cell volume. What is the minimum number of times the DNA in... more
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Dna

11/15/16

how much lighter would you be if all your dna disappeared?
how much lighter would you be if all your DNA disappeared  
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10/02/16

BIOLOGY! WHY are nucleotides a good molecule to make DNA out of, while amino acids are a good molecule to make proteins out of?
Hello everyone! I was wondering if you could help me answer this question. I have an upcoming quiz next week and this question will be on it - I am not asking for you to answer this completely, I... more
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05/01/16

DNA Analysis
What is a restriction endonuclease, describe how these can be used to investigate two types of polymorphism found in DNA?  
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Dna

04/30/16

DNA Analysis, Extraction & Visualisation of DNA using Agarose Gel Electrophoresis.
1- A solution of Lambda DNA has a concentration of 0.1mg/ ml. How much DNA (in mg) do we have in a 4 ml sample? 2. Given that lambda has a genome size of 50 Kb, how many complete lambda genomes are... more
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04/29/16

Vector Genetics DNA
You digest a 2000kb region of DNA with EcoRI and get three fragments. The middle fragment is 300bp. You take the middle fragment and clone it into a vector that is 700bp. a) How large will the... more
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04/27/16

enzymes * the dna
Enzymes * the DNA. Fill in the blank.
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Dna

01/24/16

During transcription, mRNA is copied from a chromosome. But since the chromosomes are in homologous pairs, which chromosome in the pair is the mRNA made from?
And does it matter from which chromosome in the pair the mRNA is copied from? I think it does because the two chromosomes have different alleles. 
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12/09/15

Biology: Replication, Transcription, and Translation
Fill in the chart below using the mRNA Codon chart to translate the genetic code.   |DNA Template| mRNA Codon| tRNA Anticodon| Amino... more
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Dna Biology

09/06/15

What is a label moiety on gene probe?
I'm a biology student and I'm now currently studying about gene probe. So there's this part where I read that shorter probe has a disadvantage where its not possible to put sufficient label... more
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Dna

05/11/14

DNA Extraction of a Wheat Germ.
So, our class did a DNA extraction of a wheat germ. From this lab I learned that putting warm water in to the wheat germ allows the fats in the membrane that surround the cells and the nucleus, to... more
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Dna

04/06/14

DNA Earth Science Question
If you look under a microscope and saw a particle with DNA but no nucleus you would know the particle was:   1.  Protist 2.  a plant cell 3.  an animal cell 4.  a unicellular... more
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