A. Escuchar un párrafo: “Mi viaje de verano”. Listen to the following passage about Laura’s summer vacation. First, review the comprehension questions below. Then, listen to the audio. Based on what you hear, determine whether each statement is Cierto or Falso. If the information is not mentioned, select No se menciona (not mentioned). (1 pt. each; 7 pts. total) 1. Laura decidió hacer un viaje para descansar un poco 2. Antonia pasó por la casa de Laura para hacer los planes 3. Pagaron 450 dólares por el viaje 4. Salieron por la mañana el primer día 5. Antonia y Laura compraron muchos recuerdos en cada ciudad 6. Estuvieron de vacaciones por una semana en total 7. Fue una experiencia muy divertida, y además económica

A plant hasn’t been watered lately, so it has begun to wilt. We can see the effect this has on the cells when we stain the large central vacuole. Is this plant in a hypertonic, isotonic, or hypotonic condition?

A doctor injects a patient with what the doctor thinks is an isotonic saline solution. The patient dies, and an autopsy reveals that many red blood cells have been destroyed. Do you think the solution the doctor injected was really isotonic? If not, what type of solution is it? Use complete sentences to explain what you think happened.

Using the diagram below, determine if this is active or passive transport.

A plant hasn’t been watered lately, so it has begun to wilt. We can see the effect this has on the cells when we stain the large central vacuole. Which way will the water go?

Iodine is in an indicator that causes a color change when it’s in the presence of starch. If we have a beaker filled with a cornstarch solution and a sandwich baggie filled with an iodine solution submerged in that beaker, where will you see a color change if the iodine can move through the bag.

Why is the sodium-potassium pump considered active transport? Explain your answer with what you know about how this pump works. Make sure to use your own words.

Ms. Harker has been trying to catch up with the advancements in cancer research and found this graphic in one of the journal articles she was reading. What type of cell transport is occuring in the graphic below?

In which direction will the water flow in this scenario and what will happen to the cell?

Human cells like to have _______ conditions.