BIOL 1201 VINCENT LICATA - EXAM 3
QUESTIONS & ELABORATED COMPLETE
SOLUTIONS
1. What is another name for cell to cell communication? Signal
Transduction
2. Paracrine signaling is when: signal molecules
pass from one cell to a
nearby cell
3. If something is "hormonal" or "endocrine" the signaling molecule
signaling, this means: passes through the
blood- stream
4. In most signal transduction pathways, what Nothing but information
actually passes through the membrane?
5. What are GPCRs ? G-Protein coupled
recep- tors,
transmembrane pro-
teins, cell surface
recep- tors, and
common drug
binding targets
ALL OF THE ABOVE
6. The goal of most signal transduction pathways is: to turn a gene on
or ott
7. What is the first thing an RTK (receptor tyrosine kinase) form a dimer
in the mem-
does after binding a signalling molecule? brane
8. Some signalling molecules do not need to Steroid hormones, hy-
bind to a
1/
19
,BIOL 1201 VINCENT LICATA - EXAM 3
QUESTIONS & ELABORATED COMPLETE
SOLUTIONS
cell surface receptor, they bind an internal protein and drophobic,
lipids, mem-
go all the way to the nucleus themselves. brane
These are almost always: permeable. ALL
OF THE ABOVE
9. Which is a secondary Messenger? Cyclic AMP, Calcium,
IP3(inositol 3
phosphate),
10. Which is not a secondary messenger? Insulin peptide
2/
19
, BIOL 1201 VINCENT LICATA - EXAM 3
QUESTIONS & ELABORATED COMPLETE
SOLUTIONS
11. A signal transduction pathway = reception + transduc- a series of
phosphoryla-
tion + response. What is a common process in tion
the transduction?
12. In a signal transduction pathway, what actually
transcription factors
turns the genes on or off?
13. What is the main purpose of the amplify the signal
phosphorylation cas- cade in transduction?
14. A liver cell is a somatic cell
15. DNA has several specific forms at different centrosome
levels of condensation (compaction), which of
the following is NOT a form of DNA?
16. Which of the following subdivisions of the cell interphase
cycle is the longest?
17. Which of the following is a characteristic of anaphase? sister
chromatids are
pulled apart
18. If you can see the spindle forming and see prophase
the DNA partially condensed, it must be:
19. What is part of the mitotic spindle? Microtubules, asters,
cen- trosomes,
tubulin
20. DNA is replicated during: S Phase
3/
19
QUESTIONS & ELABORATED COMPLETE
SOLUTIONS
1. What is another name for cell to cell communication? Signal
Transduction
2. Paracrine signaling is when: signal molecules
pass from one cell to a
nearby cell
3. If something is "hormonal" or "endocrine" the signaling molecule
signaling, this means: passes through the
blood- stream
4. In most signal transduction pathways, what Nothing but information
actually passes through the membrane?
5. What are GPCRs ? G-Protein coupled
recep- tors,
transmembrane pro-
teins, cell surface
recep- tors, and
common drug
binding targets
ALL OF THE ABOVE
6. The goal of most signal transduction pathways is: to turn a gene on
or ott
7. What is the first thing an RTK (receptor tyrosine kinase) form a dimer
in the mem-
does after binding a signalling molecule? brane
8. Some signalling molecules do not need to Steroid hormones, hy-
bind to a
1/
19
,BIOL 1201 VINCENT LICATA - EXAM 3
QUESTIONS & ELABORATED COMPLETE
SOLUTIONS
cell surface receptor, they bind an internal protein and drophobic,
lipids, mem-
go all the way to the nucleus themselves. brane
These are almost always: permeable. ALL
OF THE ABOVE
9. Which is a secondary Messenger? Cyclic AMP, Calcium,
IP3(inositol 3
phosphate),
10. Which is not a secondary messenger? Insulin peptide
2/
19
, BIOL 1201 VINCENT LICATA - EXAM 3
QUESTIONS & ELABORATED COMPLETE
SOLUTIONS
11. A signal transduction pathway = reception + transduc- a series of
phosphoryla-
tion + response. What is a common process in tion
the transduction?
12. In a signal transduction pathway, what actually
transcription factors
turns the genes on or off?
13. What is the main purpose of the amplify the signal
phosphorylation cas- cade in transduction?
14. A liver cell is a somatic cell
15. DNA has several specific forms at different centrosome
levels of condensation (compaction), which of
the following is NOT a form of DNA?
16. Which of the following subdivisions of the cell interphase
cycle is the longest?
17. Which of the following is a characteristic of anaphase? sister
chromatids are
pulled apart
18. If you can see the spindle forming and see prophase
the DNA partially condensed, it must be:
19. What is part of the mitotic spindle? Microtubules, asters,
cen- trosomes,
tubulin
20. DNA is replicated during: S Phase
3/
19
