In gel electrophoresis, DNA migrates through the gel when an electric charge is applied.  This is because the DNA molecule has a [blank1] charge and moves toward the [blank2] electrode.

Using recombinant DNA technology to modify an organism’s DNA to achieve desirable traits is called _____________.

A parent cell of a certain organism has 16 chromosomes and undergoes meiosis. The resulting cells will have how many chromosomes?

Amino acids are linked onto a polypeptide chain by ribosomes. What carries free amino acids to the ribosomes?

In the figure below, alleles are indicated by

Which of the following catalyzes the process of transcription?

Which indicates homozygous genotypes?

Multiple Choice Question A car travels along the track shown with constant speed. At which point will the car have the maximum acceleration. 

Multiple Choice Question A 1000-lb boulder B is resting on a 200-lb platform A when truck C accelerates towards the left with constant acceleration. Which of the following are true?

Long Question B: subpart How many Degrees of Freedom (DOFs) does the system have? Choose the appropriate answers from the dropdown menus below. # DOF [Number_of_Position_Variables]