Ice floats in liquid water because
a. ice forms hydrogen bonds with the surface of liquid water.
b. ice forms hydrogen bonds but liquid water does not.
c. the hydrogen bonds of liquid water are fixed in place.
d. liquid water forms hydrogen bonds but ice does not.
e. the distance between water molecules is maximized due to the hydrogen bonds which are
fixed in place.
E
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You have decided to repeat Palade’s experiments on the endomembrane system. You think you’ve done everything correctly, but when you observe your final sample under the microscope, you find that the entire endomembrane system contains tiny black dots. When you look at later timepoints you see the same thing. What part of the experiment did you forget?
A. You forgot to add radioactive amino acids. B. You forgot to add osmium tetraoxide. C. You forgot to add nonradioactive amino acids. D. You forgot to add the silver-containing emulsion. E. You didn’t forget anything, this is what the experiment is supposed to look like.
The state during which muscle cells require more ATP than cellular respiration can provide is known as ____
a. summation b. tetanus c. paralysis d. lactic acid debt e. oxygen debt
Assume that a Chi-square test was conducted to test the goodness of fit to a 3:1 ratio and that a Chi-square value of 2.62 was obtained
Should the null hypothesis be accepted? How many degrees of freedom would be associated with this test of significance?
The inner mitochondrial membrane contributes to the formation of a proton gradient mainly because it
A) contains ATP synthase complex. B) is the location of specific transporter proteins. C) is a barrier to protons. D) is not rich in proteins. E) is rich in proteins.