7. Multiply or Divide (use a calculator):

11. Find the value of the expression (use a calculator):

6. Multiply (use a calculator):

13. Find the value of the expression (work must be shown and uploaded):

Which of these statements about the Casparian strip is true? Select all that apply.

Which of the following statements regarding lipid digestion and absorption is true?

Action potentials ______________

The opening of stomata is thought to involve:

Place the following events of an action potential in the correct order. Na+ channels inactivate and voltage-gated (VG)K+ channels activate, allowing K+ to flow out of the axon, and repolarization begins. An unstimulated neuron has a negative resting membrane potential. The axolemma (the cell membrane of an axon) returns to resting membrane potential. VG Na+ channels open and Na+ enter the axon, causing a depolarization in this section of the axon. Local potentials accumulate to depolarize the membrane at the axon hillock.

Give the order in which antigen recognition by T cells occurs. (5points) Antigen fragments bind MHC. Antigen fragment in MHC is displayed on cell surface. MHC-peptide complex is transported to cell surface. Pathogen is taken in by, or infects, a host cell. Encounter with specific T-cell triggers immune response. Host cell enzymes make fragments from the antigen