#Question id: 1870
#Unit 4. Cell Communication and Cell Signaling
Primary immunodeficiency producing susceptibility to infection by viruses and molds is caused by:
#Question id: 3479
#Unit 11. Evolution and Behavior
Which of the following could be classified as habituation?
A) You enter a room and hear a fan motor. After a period of time, you are no longer aware of the motorʹs noise.
B) You hear a horn while driving your car. You step on the brakes but notice the sound came from a side street. You resume your previous speed.
C) One morning you awake to a beep-beep-beep from a garbage truck working on a new early morning schedule. The next week the garbage truck arrives at the same time and makes the same noise, but does not wake you up.
#Question id: 14519
#Unit 13. Methods in Biology
#Question id: 715
#Unit 1. Molecules and their Interaction Relevant to Biology
A protein is made up of 200 amino acids with alpha helix region containing 100 amino acid residues and 80 amino acids making antiparallel beta sheet and rest 20 amino acids in extended form. What will be the total length of this protein?
#Question id: 2339
#Unit 2. Cellular Organization
A busy student pours herself a cup of coffee and adds a sugar cube. A moment later the phone rings so she doesn't have time to stir it. Ten minutes later she returns to her coffee, and when she tastes it, it is obvious that the sugar has dissolved and that the coffee is uniformly sweet. What happened?