Directions: Fill in the simple past tense and past participle of each verb. Present Simple Past Past Participle run fly tear speak drink

In which area of the body would you expect to find MALT?

Mechanical digestion

Directions: Rewrite the sentences using the present perfect. Ivan lived in the U.S. for ten years. There was a lot of snow in Boston this month. 

Directions: Match each sentence with the correct explanation. The action: started in the past and continues into the present repeats during a period of time from past to present occurred at an indefinite time in the past   I have always liked ice cream. Jason has taken amazing pictures. He has received many awards. He has been a photographer for the last twenty years. He has helped us see the world.

Immunological surveillance that involves immune system cells checking if body cells possess the correct population of self-proteins (major histocompatibility complex I antigens) is the job of N-K Lymphocytes.

A new autoimmune drug has been developed that has a side effect of inhibiting the adaptive immune system.  Which of the following would the drug most likely affect?

Which of the following is incorrectly paired with its location or enzyme?

The contraction of skeletal muscles plays an important role in the movement of blood in the veins or your limbs.

Directions: Match each sentence with the correct explanation. The action: started in the past and continues into the present repeats during a period of time from past to present occurred at an indefinite time in the past   We have eaten at Gino’s three times so far this week. I have eaten pizza before. Maria has had her job for six years. So far, Alice has invited 15 people to her party. They have met my parents.