When a foreign invader infects a human host, what is likely the first responder for the immune system?

How does a macrophage destroy a pathogen?

A person inhales a potentially pathogenic bacterium. What defenses will the bacterium encounter as it travels through the human body? (Mark all that apply.)

The job of a natural killer cell is to ________.

Escherichia coli bacterium doubles every 10 minutes and you have a starting inoculum of 50 colony forming units (CFU). How many colony forming units (CFU) will be present after 1 hours?

If you crossed two heterozygous yellow seed pea plants (genotypes Aa), ________.

An organism that cannot grow without oxygen is a(n):

The term facultative refers to:

All of the following are correct about biofilms, except:

All of the following are helminths (parasitic worm) or helminth infections, except: