Ansc 224 Exam 1 UIUC UPDATED Actual Questions and CORRECT Answers
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Course
Ansc 224
Institution
Ansc 224
Ansc 224 Exam 1 UIUC UPDATED Actual
Questions and CORRECT Answers
Which of the following tissues has the greatest relative growth from birth to maturity? -
CORRECT ANSWER- Skeletal muscle
During fetal development most organs and tissues are growing primarily by which process? -
CORRECT ANSWER...
Ansc 224 Exam 1 UIUC UPDATED Actual
Questions and CORRECT Answers
Which of the following tissues has the greatest relative growth from birth to maturity? -
CORRECT ANSWER- ✔✔Skeletal muscle
During fetal development most organs and tissues are growing primarily by which process? -
CORRECT ANSWER- ✔✔Proliferation or Hyperplasia
Which of the following intracellular signaling pathway is important for regulating cell size? -
CORRECT ANSWER- ✔✔PI-3 Kinase
What is the function of mTor (mammalian target of rapamycin)? - CORRECT ANSWER-
✔✔It signals intracellular nutrient availability
MAPK signaling results in phosphorylation of Rb protein. Rb normally inhibits transcription
of cyclins. What could be the result of a mutation in Rb protein? - CORRECT ANSWER-
✔✔Excess proliferation
Where in the cell cycle is the restriction point that checks for adequate growth factors and
nutrients? - CORRECT ANSWER- ✔✔G1
Signaling between cells occurs by which of the following mechanisms? - CORRECT
ANSWER- ✔✔Autocrine, Juxtacrine, Paracrine, and Endocrine (all of the above)
What is the function of E3 ubiquitin ligases in protein degradation? - CORRECT ANSWER-
✔✔Adding poly-ubiquitin in order to target proteins for degradation
Which of the following are different between epithelial and mesechymal cells? - CORRECT
ANSWER- ✔✔Relative amounts of cell to cell and cell to matrix adhesion
Which of the following are mechanisms for epigenetic changes in the genome? - CORRECT
ANSWER- ✔✔Methylation of DNA or methylation of histone protein
, Establishing the body axes in the embryo results from which of the following processes? -
CORRECT ANSWER- ✔✔Primitive streak induction
Which of the following cell types forms the primitive streak? - CORRECT ANSWER-
✔✔Mesoderm cells
Which of the following are important in regulating anterior/posterier axial development? -
CORRECT ANSWER- ✔✔Retinoic acid, Fibroblast growth factor (FGF), Hox genes
(all of the above)
Hox genes are important for positional identity in which tissues? - CORRECT ANSWER-
✔✔Vertebrae, GI tract, Genitalia
(all of the above)
Myoblasts forming skeletal muscle arise from which process? - CORRECT ANSWER-
✔✔Migration of cells from the somites
An interesting exotic species has an unusual mutation in that Hox genes D11, D12, D13 (
very 5' paralogs) have been deleted. How would you expect the structure or this animal to
appear? - CORRECT ANSWER- ✔✔Deletion of hind limbs
Cells forming the cartilage models for bone in the limbs arise from which process? -
CORRECT ANSWER- ✔✔Proliferation of mesodermal cells beneath the epithelium
What follows chondrocyte hypertorphy during growth of the epiphyseal plate? - CORRECT
ANSWER- ✔✔Chondrocyte apoptosis
Which of the following portions of the skeleton form by intramembranous ossification? -
CORRECT ANSWER- ✔✔Bones of the jaw
What is the function of multinucleated osteoclast cells? - CORRECT ANSWER- ✔✔Bone
remodeling throughout life
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