1. What is a DNA barcode?
DNA barcoding is fast, accurate method of identifying plant and animals, or products made from them. It’s a DNA sequence that uniquely identifies each species of living things by comparing them with known barcodes in large online databases. When you get to the section where the animation separates into plant and animal cells, select animal cells: 2. What are the two steps taken at the beginning of the process to break down the cell membrane? a. Adding lysis solution to tube which dissolves membrane bound organelles b. Twisting a clean pestle against surface and grinding the tissue which breaks up the cell walls and other tough materials
3. What is the first step to separate the cellular debris from the DNA?
DNA …show more content…
What is the function of gel electrophoresis?
Way to sort and measure DNA strands according to length. This technique is also useful for separating other types of molecules, like proteins.
2. Where are DNA samples placed in the gel?
DNA samples are placed into wells at one end of the gel.
3. What makes the DNA move across the gel? By adding electrical current DNA moves.
4. Why do DNA fragments of different lengths travel to different locations on the gel?
**Short fragments move through the wells in the gel more quickly. Over time shorter fragments in the sample will move further away from the starting point than the longer fragments. DNA fragments of the same length will move at the same speed and end up grouped together.
5. Why is the DNA stained?
To make the DNA visible to the naked eye.
6. Is each band on the gel made up of only one DNA segment?
*Each band contains DNA molecules of a particular size.
7. Explain the function of each of the following pieces of lab equipment. a. agarose- Used as diagnostic tool to visualize the fragments b. gel mold- Allow gel to presume a
DNA barcoding is fast, accurate method of identifying plant and animals, or products made from them. It’s a DNA sequence that uniquely identifies each species of living things by comparing them with known barcodes in large online databases. When you get to the section where the animation separates into plant and animal cells, select animal cells: 2. What are the two steps taken at the beginning of the process to break down the cell membrane? a. Adding lysis solution to tube which dissolves membrane bound organelles b. Twisting a clean pestle against surface and grinding the tissue which breaks up the cell walls and other tough materials
3. What is the first step to separate the cellular debris from the DNA?
DNA …show more content…
What is the function of gel electrophoresis?
Way to sort and measure DNA strands according to length. This technique is also useful for separating other types of molecules, like proteins.
2. Where are DNA samples placed in the gel?
DNA samples are placed into wells at one end of the gel.
3. What makes the DNA move across the gel? By adding electrical current DNA moves.
4. Why do DNA fragments of different lengths travel to different locations on the gel?
**Short fragments move through the wells in the gel more quickly. Over time shorter fragments in the sample will move further away from the starting point than the longer fragments. DNA fragments of the same length will move at the same speed and end up grouped together.
5. Why is the DNA stained?
To make the DNA visible to the naked eye.
6. Is each band on the gel made up of only one DNA segment?
*Each band contains DNA molecules of a particular size.
7. Explain the function of each of the following pieces of lab equipment. a. agarose- Used as diagnostic tool to visualize the fragments b. gel mold- Allow gel to presume a