The immune system commonly uses multiple forms of cell messaging. What message is commonly sent out? (Mark all that apply.)

A man is scratched by his cat. A phagocyte near the scratch site recognizes and engulfs a bacterium. Shortly thereafter, more phagocytes arrive in the tissue surrounding the scratch.  How are the additional phagocytes recruited to the site of the scratch?

The technique of Sanger sequencing takes advantage of the fact that dideoxynucleotides (nucleotides in which the 3’ hydroxyl group is absent) act as ________.

Someone who has an infection, but is showing no outward signs or symptoms accidentally spreads the infection to others is best described as a/an:

True or False: mutations always result in the death of the organism which acquires them.

In which phase of the cell cycle is the DNA replicated?

What is the result of meiosis?

If a mutation rendered the signal recognition particle nonfunctional, what would be the most obvious effect on the cell?

Complete the following sentence: An intron is ________.

Which of the following components of an amino acid differs from one amino acid to another?