Blog

You put a membrane in a container of water, then put some solute on each side. You put more solute on the left than on the right. In this diagram, solute is shown as black dots:                                             This diagram shows the STARTING state of the container, before any movement has occurred. Which one of the following statements is TRUE?

How did you solve the previous problem on cat allele frequency? You may either: Explain in complete sentences OR Type out the calculations you did. (Even if you didn’t solve it correctly, partial credit is possible for having taken some steps towards the answer, so don’t leave this blank!)

The circled region in the middle of the cell membrane bilayer, as shown above, is…  

Which of the following would be most likely to lead to ALLOPATRIC speciation?

A setting of 2–3 liters of oxygen per minute would be an appropriate setting for a(n):

Zofran is an anti-emetic.

The strength of epinephrine used to treat an allergic reaction is:

There should always be at least two suction devices available: one for the surgical field and one to help with airway maintenance.

Hearing is the first sense to return during emergence from anesthesia.

Our eyes sting when we get very salty water (such as seawater) in them. Tears also contain salt, but they do not sting our eyes the way seawater does. Using the following terms appropriately, answer the following question. Terms to use: Cells    Osmosis Hypertonic/Isotonic/Hypotonic (Note: you only need to use TWO of these. One can go unused!) Solutes Question: Why does seawater sting our eyes, while our own tears usually do not? (You should address BOTH parts of the question. This can be done in 2-4 sentences.) (6 pts)  HINT: Tears have roughly the same salt concentration as the normal saline mentioned in our lesson.