MCB 252: CELL DYNAMICS AND REGULATION EXAM
cell survive, cell grow and division, cell differentiation, and apoptosis - answers✔✔Which of the
following is/are a global response(s) to signaling (or lack of signaling in some case(s) discussed
in lecture? Select the best single answer.
- cell differentiation
- cell survive and cell grow and division
- cell differentiation and apoptosis
- cell survive, cell grow and division, and cell differentiation
- cell survive, cell grow and division, cell differentiation, and apoptosis
Embryonic stem cells - answers✔✔What type of cell(s) discussed in lecture are pluripotent?
Select the best single answer.
- Embryonic stem cells
- Adult stem cells
- Embryonic stem cells and Adult stem cells
Adult stem cells - answers✔✔What type of cell(s) discussed in lecture are multipotent? Select
the best single answer.
- Embryonic stem cells
- Adult stem cells
- Embryonic stem cells and Adult stem cells
Signaling in normal development and cellular damage (DNA damage is also an acceptable
answer) - answers✔✔As discussed in lecture, apoptosis can occur in response to what? Select
the best single answer.
- Signaling in normal development
,- Cell shape, when cells adopt an inappropriate shape
- Signaling in normal development and cellular damage (DNA damage is also an acceptable
answer)
- Signaling in normal development, cellular damage (DNA damage is also an acceptable answer),
cell size, particularly when cells grow to a much larger than average size
- Signaling in normal development, cellular damage (DNA damage is also an acceptable answer),
cell size, particularly when cells grow to a much larger than average size, and cell shape, when
cells adopt an inappropriate shape
210 - answers✔✔As discussed in lecture, approximately how many cell types are there in
human cells, at least for our comparative purposes this semester? Choose the best single
answer.
- 21
- 210
- 2,100
- 21,000
10^14 - answers✔✔Approximately how many cells are there in the human body?
- 10^3
- 10^7
- 10^14
- 10^10
- 10^17
Enhancers and exons - answers✔✔Which of the following were described in lecture as "acting
over a distance"?
- Exons
- Enhancers
, - tRNAs
- Enhancers and exons
- All of the above
True - answers✔✔True or false?
As discussed in lecture, in evolution it is rare to invent novel proteins and machines. Once a
protein or machine is invented, it is relatively easy (or frequent) to adapt it to different roles.
Gene duplication and divergence - answers✔✔Gene families (and protein families) are formed
by:
- Gene duplication and divergence
- Stem gene emergence
- Gene birth
- Gene birth and stem gene emergence
- All of the above
True - answers✔✔True or false?
For modular proteins, the domains that make up a protein fold independently of each other.
True - answers✔✔True or false?
During development in Xenopus laevis, there is no increase in mass from the time the egg is
fertilized until at least the 10,000 cell blastula stage.
Ectoderm - answers✔✔Which primary germ layer is on the outside of a developing frog at the
neurula stage?
- Ectoderm
- Mesoderm
cell survive, cell grow and division, cell differentiation, and apoptosis - answers✔✔Which of the
following is/are a global response(s) to signaling (or lack of signaling in some case(s) discussed
in lecture? Select the best single answer.
- cell differentiation
- cell survive and cell grow and division
- cell differentiation and apoptosis
- cell survive, cell grow and division, and cell differentiation
- cell survive, cell grow and division, cell differentiation, and apoptosis
Embryonic stem cells - answers✔✔What type of cell(s) discussed in lecture are pluripotent?
Select the best single answer.
- Embryonic stem cells
- Adult stem cells
- Embryonic stem cells and Adult stem cells
Adult stem cells - answers✔✔What type of cell(s) discussed in lecture are multipotent? Select
the best single answer.
- Embryonic stem cells
- Adult stem cells
- Embryonic stem cells and Adult stem cells
Signaling in normal development and cellular damage (DNA damage is also an acceptable
answer) - answers✔✔As discussed in lecture, apoptosis can occur in response to what? Select
the best single answer.
- Signaling in normal development
,- Cell shape, when cells adopt an inappropriate shape
- Signaling in normal development and cellular damage (DNA damage is also an acceptable
answer)
- Signaling in normal development, cellular damage (DNA damage is also an acceptable answer),
cell size, particularly when cells grow to a much larger than average size
- Signaling in normal development, cellular damage (DNA damage is also an acceptable answer),
cell size, particularly when cells grow to a much larger than average size, and cell shape, when
cells adopt an inappropriate shape
210 - answers✔✔As discussed in lecture, approximately how many cell types are there in
human cells, at least for our comparative purposes this semester? Choose the best single
answer.
- 21
- 210
- 2,100
- 21,000
10^14 - answers✔✔Approximately how many cells are there in the human body?
- 10^3
- 10^7
- 10^14
- 10^10
- 10^17
Enhancers and exons - answers✔✔Which of the following were described in lecture as "acting
over a distance"?
- Exons
- Enhancers
, - tRNAs
- Enhancers and exons
- All of the above
True - answers✔✔True or false?
As discussed in lecture, in evolution it is rare to invent novel proteins and machines. Once a
protein or machine is invented, it is relatively easy (or frequent) to adapt it to different roles.
Gene duplication and divergence - answers✔✔Gene families (and protein families) are formed
by:
- Gene duplication and divergence
- Stem gene emergence
- Gene birth
- Gene birth and stem gene emergence
- All of the above
True - answers✔✔True or false?
For modular proteins, the domains that make up a protein fold independently of each other.
True - answers✔✔True or false?
During development in Xenopus laevis, there is no increase in mass from the time the egg is
fertilized until at least the 10,000 cell blastula stage.
Ectoderm - answers✔✔Which primary germ layer is on the outside of a developing frog at the
neurula stage?
- Ectoderm
- Mesoderm
