Correctly order the steps involved cellular immunity:
1) the tc recognizes the infected host cell
2) the tc interacts with epitope presented by mhc-i on the dendritic cell
3) the tc secretes perforin and granzyme, causing apoptosis
4) the t cell activates the tc cell
a.1,2,4,3
b. 4,2,1,3
c. 2,4,1,3
d. 2,1,3,4

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.