Science Homework Help

True of False

1.Cathode is negatively charged electrode

2.Anode attracts anions

3.Anions are positively charged

4.DNA moves toward cathode

5.Proteins move only toward the anode

6.We use DNA electrophoresis to separate OCR products

7.We use DNA electrophoresis to purify PCR products

8.We use DNA electrophoresis to confirm if the cells are actively proliferating

9.We use DNA electrophoresis to detect apoptosis

10.DNA ladder is a sign that the cells are apoptotic

11.DNA ladder is provided by the biotech companies to estimate the size of unknown DNA fragments

12.DNA is visible on the gel by itself without staining it by dyes

13.Ethidium Bromide is a mutagen

14.One can use any kind of gloves to protect the skin from Ethidium Bromide

15.Molecules of Ethidium Bromide adhere to DNA strands and fluoresce under UV light

16.SYBR Gold is a safe dye

17.SYBR Green is used to stain the single-stranded DNA and RNA

18.SYBR Safe is the most well-known dye

19.Gel loading buffer is used as a tracking dye

20.Glycerol and sucrose ensure that DNA in the sample forms a layer at the bottom of the well