A scientist uses materials in her lab to cut a DNA sample into fragments.

What process is the scientist using?

A. Gel electrophoresis

B. Use of restriction enzymes

C. Polymerase chain reaction (PCR)

D. Karyotyping

I) Distinguish a substance from a mixture. Give 2 examples of each

How do you solve the problems of SO2?

Which combustion equation violates the law of conservation of matter?

32. A solution suspected of containing copper is analyzed. To determine the standard curve, the absorbance of five standards ranging from 0.125 mg/L Cu to 1.25 mg/L Cu was measured and graphed against the concentration.

How many grams of magnesium oxide can be produced when 125 g Mg react with 102 g O2? Unbalanced equation: Mg + O2 → MgO Show, or explain, all of your work along with the final answer.

How does temperature affect molecules

The color of Benedictâs solution is blue. What color does it change to in high sugar concentration?

What functional groups of the emulsifying agent provide the hydrophilic character? Do these groups affect the pH?

Which element has atoms that can form single, double, and triplecovalent bonds with other atoms of the same element? (1) hydrogen (3) fluorine (2) oxygen (4) carbon

Which of the following statements best describes the basic structure of an atom? Electrons and protons are in motion around a nucleus that contains neutrons Neutrons are in motion around a nucleus that contains protons and electrons Protons are in