EXAM COMPREHENSIVE QUESTIONS
AND VERIFIED ANSWERS GRADED A+ |
100% CORRECT | 2024 UPDATE!!
What is the cell adhesion molecule Cadherin used for? Is it calcium
dependent or independent? - ✔✔✔ Correct Answer > Cells that are
identical interacting with each other - hemophilic
Calcium Dependent
What role do membrane carbohydrates play? - ✔✔✔ Correct Answer
> Cellular interactions during histogenesis and immune responses
What type of ligands bind to cytoplasmic receptors? - ✔✔✔ Correct
Answer > Hydrophobic ligands
(Steroids example)
What is an example of a nuclear receptor being used? - ✔✔✔ Correct
Answer > T3/T4 enters the nucleus through a NPC
Binds onto DNA being processed in the nucleus
,Describe the process of the enzyme linked receptor Tyrosine Kinase -
✔✔✔ Correct Answer > Ligand binding triggers receptor dimerization
Describe passive transport and whether it is atp dependent or
independent - ✔✔✔ Correct Answer > Also called diffusion
Lipophilic molecules cross through phospholipid bilayer from area of
high concentration to an area of low concentration
ATP independent
Describe facilitated diffusion and whether it is ATP dependent or
independent - ✔✔✔ Correct Answer > Hydrophilic and large ions
that cannot freely diffuse across the bilayer are passively transported
using transmembrane integral carrier or channel proteins
ATP independent
Describe osmosis and whether it is ATP dependent or independent -
✔✔✔ Correct Answer > The movement of water molecules across
the CM
,Move from area of high water (low solute) to an area of low water (high
solute)
ATP independent
What is the minimum pressure to maintain equilibrium in osmosis
called? - ✔✔✔ Correct Answer > Osmotic pressure
Describe primary active transport and whether it is ATP dependent or
independent - ✔✔✔ Correct Answer > Movement of molecules and
ions across the cytoplasmic membrane against the concentration
gradient using ATP
Na/K ATPase pumps
Active transport carrier proteins
What is the cell adhesion molecule Selectin used for? Is it calcium
dependent or independent? - ✔✔✔ Correct Answer > Two non-
identical cell interactions - heterophilic
Calcium dependent
, What is the cell adhesion molecule Integrin used for? Is it calcium
dependent or independent? - ✔✔✔ Correct Answer > Used for cell
to cell matrix interaction
Calcium independent
Define connexins and their function - ✔✔✔ Correct Answer >
Transmembrane proteins that assemble to form gap junctions
Allow molecules, ions, and electrical impulses to pass between cells
Bridge between cytoplasms
Describe the general functions of the cell nucleus - ✔✔✔ Correct
Answer > Stores DNA and coordinates the cellular activities
Describe the structure of the nuclear membrane and what organelle it
is connected to - ✔✔✔ Correct Answer > Double nuclear membrane
Connected to the RER
How do macromolecules pass through the nucleus and cytoplasm? -
✔✔✔ Correct Answer > Nuclear pore complexes