Your roommate needs to write a paper for her Composition class and finds that her writing is very repetitive. Show her how to identify the direct objects in a sentence so she can replace them with pronouns. For the sentence below, choose the word that is the direct object. Type only the letter in the blank. 1. En la librería de la universidad venden libros de texto.   a.librería     b.universidad     c.libros __________________________________________________  2. Yo prefiero escuchar música cuando estudio.  a.estudio     b.Yo     c.música __________________________________________________  3. Yo tengo que llamar a mi madre antes de la clase de español.  a.español     b.madre     c.clase  ___________________________________________________  4.  Nosotros no entendemos las preguntas del examen.  a.Nosotros     b.examen     c.preguntas

¿Cómo cambian? Can you remember how all of the stem-changing verbs change? Complete each of the following sentences with the correct form of the present tense of the logical verb in parenthesis. 1.¡Amigo Diego!, ¿ (querer / venir ) ir al restaurante con nosotros? 2. Ana y yo (servir / pensar) que la clase es difícil. 3. Mis amigos (repetir / preferir) estudiar esta noche. 4. ¿Cuándo (empezar / pedir) tú a estudiar para el examen? 5. Tú siempre (poder / almorzar) en la cafetería. 6. Ana normalmente (volver / preferir) a casa tarde por la noche. 7. Los estudiantes (costar / dormir) siete horas todas las noches. 8. Yo no (perder / encontrar ) mis libros. No sé dónde están.

Neuron Action Potential – Part 2 This question is about what triggers the voltage-gated ion channels to open and close during an action potential. Take a look again at the graph of an action potential on the membrane of a neuron (given below). Describe what is happening in the voltage-gated sodium channels and the voltage-gated potassium channels during the point in time on your graph 1) when threshold is reached, 2) when +30mV is reached, and 3) when -80mV is reached. What are each of the two ion channels doing at each of these 3 points on the graph? Tip: remember that sodium channels have two gates and three states, whereas potassium channels have one gate and two states.  

Which of the two options (given above) for question 39 do you prefer to answer?

Extra Credit (3pts):   Which do you think would cause more problems for the affected person: deficiency in pancreatic amylase or deficiency in pepsin? Explain briefly.

  Give the full name of the region of the gland labeled #4 (be specific). Ignore the other labels. (Hint: include the name of the gland in your answer)

    Give the full name of the specific layer indicated by the red star. Ignore the other labels. (Hint: include the name of the organ in your answer)

  Give the full name of the gland in the field of view. (Hint: the gland fills the entire image)

Short Answer: Use your own words or phrases or sentence structure to correctly answer the question. Make sure to provide enough detail to address all points of the question.   Name at least four unicellular glands in the epithelial layer lining the gastric lumen and/or gastric pits/glands, and then name all of the substances that each cell secretes.

  Give the full name of the organ in the field of view. (Hint: the organ fills the entire image)