Aresearcher added a mixture of animal proteins to a physiological bufler solution (ph 7.4) in a test tube incubated at 37"c.
the researcher then added purified pepsin to the mbture, but even after several hours, the proteins were not digested.

which of the following would explain this result?

a)pepsin must be converted to its active form, pepsinogen, which digests proteins.

b)the ph was too high

c)pepsin doesn't digest animal proteins

d)the temperature was too low

The nurse is caring for rescued flood victims in the emergency department. which drugs are used to treat cerebral edema or decrease free water in clients with submersion injuries? select all that apply.

Consider the motion of the balloon and its air contents in terms of momentum. in step 1 above, the total momentum of the balloon and its contents was zero. recall that momentum = mv. both the balloon and the air inside it had a velocity of zero and therefore the total momentum was zero. now think about what happened when the air escaped from the balloon. a certain mass of air accelerated in one direction. in order to keep the total momentum of the system zero, the balloon itself (which has mass) had to accelerate in the opposite direction. use this scenario to you explain why the soda can rotates when the water squirts out of the escape holes. what was your hypothesis concerning the water-filled can? according to your data, do you think your hypothesis was correct? (be sure to refer to your data when answering this question.) summarize any difficulties or problems you had in performing the experiment that might have affected the results. describe how you might change the procedure to avoid these problems. give at least one more example of newton's third law in everyday life.

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?