True or False: Use of search engines, such as Google, Bind, cell phones, notes and books are prohibited during the exam.

In early 1900s, global population was 5 billion. This statement is true or false (indicate by T or F)

Which one of the following does not contribute to global warming:

Current global population boom with an ever-increasing global demand for energy is linked to global warming. This statement is true or false (indicate by T or F)

Carbon dioxide (CO2) accumulation in our atmosphere is only responsible for global warming. This statement is true or false (indicate by T or F)

Identify the correct sequence of receptor and ligand interactions between antigen presenting cell and T-lymphocyte

The term describing the specificity of an antigen receptor for its antigen is

Chemokines are cytokines that

The purpose of transferrin is to:

Na+ ions are not able to diffuse directly through the phospholipid bilayer without a channel because they are charged.