Comprehensive Questions and
Solutions Graded A+
What does it take to make a cell? - Answer: Information, Chemistry, Components
What is the difference between Prokaryotic Cells and Eukaryotic Cells? - Answer: Eukaryotic
Cells have a nucleus.
A toxin from toadstools called garafraxin, when added to nerve cells, prevents Na+ ion
movement from higher to lower concentrations. What is a possible explanation? - Answer: (i)
The toxin enters and blocks Na+ channels.
(ii) Garafraxin antagonizes the ligand that activates Na+ channels.
What is meant by a membrane's transition temperature? - Answer: When a membranes lipids
go from liquid crystal to crystallize gel or vice versa.
What property of transmembrane domains allows them to remain embedded in a lipid bilayer?
- Answer: They're made up of hydrophobic amino acids.
How many ATPs are required to transport 12 Na+ ions out of the cell? - Answer: 4 ATPs
How many ATPs are required to transport 10 K+ ions into the cell? - Answer: 5 ATPs