ASU BIO 351- MODULE 1 TEST QUESTIONS AND CORRECT ANSWERS LATEST STUDY GUIDE 2026 GRADED A+, Exams of Nursing

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ASU BIO 351- MODULE 1 TEST

QUESTIONS AND CORRECT

ANSWERS LATEST STUDY GUIDE

2026 GRADED A+.

1. Which of the following terms describes the step at which cells become irre- versibly committed to a particular cell fate?

Gastrulation Determination Differentiation Specification✔✔ correct answer Determination

2. Which of the following is the correct order of developmental steps leading to a specialized cell type?

Differentiation, determination, specification Determination, differentiation, specification Determination, specification, differentiation Differentiation, specification, determination Specification, determination, differentiation✔✔ correct answer Specification, determination, ditterentiation

3. As cells move along the continuum from stem cell to differentiated cell which of the following correctly identifies the

properties of a determined cell?

Fate is irreversible. Is fully differentiated. It cannot differentiate. Fate is reversible.✔✔ correct answer Fate is irreversible.

4. 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?

conditional specification of the EMS cell autonomous specification of the P2 cell conditional specification of the P cell autonomous specification of the EMS cell✔✔ correct answer Conditional specification of the EMS cell

5. Which of the following are TRUE properties of embryonic stem (ES) cells?

of it into the liquid medium covering the epidermal cells in Dish B, you notice that it causes the epidermal cells to round up and thicken. What developmental concept does this example best describe?

Induction of mesenchymal cells by paracrine signaling from epithelial cells Induction of epithelial cells by paracrine signaling from mesenchymal cells Juxtacrine signaling causing induction of the epidermal cells Induction of mesenchymal cells by juxtacrine signaling

Induction of mesenchymal cells by paracrine signaling from the epithelial cells✔✔ correct answer Induction of epithelial cells by paracrine signaling from mesenchymal cells

11. The normal morphogen gradient in a limb bud is shown in the diagram below on the left. The panel on the right shows the

levels of morphogen after a bead soaked with SHH is transplanted into the rostral side of a limb bud. Which of the following (A-E) best describes the expected pattern of digits?

D A E B C✔✔ correct answer B