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Polar amino acids are hydrophilic.

Identify the structures labeled A: [A], and B: [B].

What are the actions of the pectoralis major muscle? From the list below, please choose all the actions of pectoralis major. You may choose more than one action but that does not necessarily mean there is more than one correct answer.

This is a short answer question. Please answer using complete sentences. Your answer should reflect the level at which this material was discussed in class.  In class, we discussed the troponin-tropomyosin system. This system regulates muscle contraction in skeletal muscle. Describe the physical arrangement of troponin and tropomyosin relative to each other AND relative to the myofilaments in the sarcomere. (2 points) What is the specific function of troponin in this system? What is the specific function of tropomyosin in this system? (2 points)

What is the action of the trapezius muscle? From the list below, please choose all the actions of trapezius. You may choose more than one action but that does not necessarily mean there is more than one correct answer.

Which of the following statements is true about acetylcholine?

What is the action of the triceps brachii muscle at the forearm? From the list below, please choose all the actions that the triceps brachii muscle can perform at the forearm. You may choose more than one action but that does not necessarily mean there is more than one correct answer.

A 45.0 g sample of water contains 11.2 mg of a toxin.  What is the concentration of this toxin in ppm? (Hint: ppm = [msolute/msolution]x106; ppm = mg/L; Dwater = 1.00 g/mL)

In the equilibrium reaction shown below, which species is the conjugate base of compound a?  

You have transferred a culture to a plate. You incubated for 48 hours, but there is no growth on the plate. Explain one reason this might occur.