Stem cells and differentiation Quiz
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5 questions, one answer each
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1. Which type of cell can form placental cells as well as all body cells?
- A. Pluripotent
- B. Differentiated
- C. Totipotent
- D. Haploid
2. In which structure are the pluripotent embryonic stem cells found?
- A. The inner cell mass of the blastocyst
- B. The outer layer of the morula
- C. The zona pellucida
- D. The placenta
3. Why does a muscle cell not make insulin?
- A. The muscle cell lacks the insulin gene
- B. The muscle cell has no ribosomes
- C. Insulin is made only while the cell is dividing
- D. The insulin gene is not transcribed in the muscle cell
4. A gene has five exons. Exons 1 and 5 are always kept, and exons 2, 3 and 4 may each be kept or removed. How many different mature mRNAs are possible?
- A. 3
- B. 8
- C. 5
- D. 6
5. Which is a valid reason why some people object to using embryonic stem cells?
- A. The cells are always rejected
- B. The cells contain no DNA
- C. Obtaining the cells destroys an embryo
- D. The cells cannot divide