BIO 351- Exam 1 Questions and Verified Answers, 100% Score Guarantee Pass (Latest 2025) Which of the following is the correct order of developmental steps leading to a specialized cell type?
- determination, differentiation, specification
- differentiation, specification, determination
- determination, specification, differentiation
- differentiation, determination, specification
- specification, determination, differentiation - Correct
Answers ✅E. specification, determination, differentiation Which of the following statements is FALSE?
a) Cell fates are reversible after specification.
b) During autonomous specification, cells require
communication with surrounding cells for commitment to a particular cell fate.
c) Differentiation involves changes in gene expression,
morphology, and function.
d) Cell fates are irreversible after determination. - Correct
Answers ✅b) During autonomous specification, cells require communication with surrounding cells for commitment to a particular cell fate. 1 / 2
BIO 351- Exam 1 Questions and Verified Answers, 100% Score Guarantee Pass (Latest 2025) The diagram shows a nematode embryo at the four cell stage. The EMS cell normally divides and gives rise to cells that will form the mesoderm and endoderm. Killing the P2 cells leads to the disruption of EMS cell differentiation, which of the following best describes the process taking place?
- autonomous specification of the EMS cell
- autonomous specification of the P2 cell
- conditional specification of the EMS cell
- conditional specification of the P2 cell - Correct Answers
✅c) conditional specification of the EMS cell Signaling between endosteal osteoblasts and hematopoietic stem cells (HSC) in the niche are necessary for which of the following?
a) Differentiation of myeloid cells only.
b) T and B Cell differentiation
c) Maintenance of HSC potency and proliferation
d) Angioblast specification - Correct Answers ✅c)
Maintenance of HSC potency and proliferation What is the expected result when siRNA is used in a cell?
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