PSL 431 Lecture 1-4 Review Quiz well
answered to pass
All of the following are true about the plasma membrane expect for:
- Its fluidity can be increased by increasing the content of unsaturated fatty acids
- Integral proteins can be anchored in it or pass through it
- It separates aqueous solutions with the same composition
- It retains organelles within the ICF - correct answer ✔✔ It separates aqueous solutions with
the same composition
The Nerve Growth Factor Receptor is a tyrosine kinase receptor. Which of the following will
occur when it binds to its ligand?
- It will regulate an effector protein to alter the generation of second messengers
- It will cause the heterotrimeric G protein to exchange GDP for GTP
- It will open to allow transport of ions across the plasma membrane
- It will translocate to the nucleus to function as a transcription factor
- It will induce phosphorylation of the receptor and other intracellular proteins - correct answer
✔✔ It will induce phosphorylation of the receptor and other intracellular proteins
All of the following would induce negative feedback mechanisms EXCEPT for:
- After sitting in a hot tube your temperature registers 101 F
- You run a marathon and are breathing heavily
- You ingest a whole cake plus 10 sugary sodas and are on a "sugar high"
- You take your temperature and find that it is 98.6 F
- You drink a hypertonic solution of NaCl - correct answer ✔✔ You take your temperature and
find that it is 98.6 F
answered to pass
All of the following are true about the plasma membrane expect for:
- Its fluidity can be increased by increasing the content of unsaturated fatty acids
- Integral proteins can be anchored in it or pass through it
- It separates aqueous solutions with the same composition
- It retains organelles within the ICF - correct answer ✔✔ It separates aqueous solutions with
the same composition
The Nerve Growth Factor Receptor is a tyrosine kinase receptor. Which of the following will
occur when it binds to its ligand?
- It will regulate an effector protein to alter the generation of second messengers
- It will cause the heterotrimeric G protein to exchange GDP for GTP
- It will open to allow transport of ions across the plasma membrane
- It will translocate to the nucleus to function as a transcription factor
- It will induce phosphorylation of the receptor and other intracellular proteins - correct answer
✔✔ It will induce phosphorylation of the receptor and other intracellular proteins
All of the following would induce negative feedback mechanisms EXCEPT for:
- After sitting in a hot tube your temperature registers 101 F
- You run a marathon and are breathing heavily
- You ingest a whole cake plus 10 sugary sodas and are on a "sugar high"
- You take your temperature and find that it is 98.6 F
- You drink a hypertonic solution of NaCl - correct answer ✔✔ You take your temperature and
find that it is 98.6 F
