Pearson Edexcel IAL Biology 3.17 Stem cells & medical therapies
Practise comparing stem cell potency, early embryo structures and evidence-based decisions about stem cell therapies.
- Syllabus
- First assessment 2019
- Course
- Biology YBI11
- Level
- AS
Exam points
- distinguish totipotent and pluripotent cells using zygote, morula and blastocyst examples
- compare morula and blastocyst structure, including solid mass, hollow ball and inner cell mass
- explain support or objections to stem cell therapies using embryos, hiPSCs and medical potential
3.17—Stem cells and medical therapies question 1
[Maximum number: 1]
All living organisms are made of cells. Some cells are specialised for their function.
A fertilised egg cell develops into a morula and then a blastocyst. Which of the following are correct statements? 1. A blastocyst contains pluripotent stem cells. 2. A blastocyst is a hollow ball of cells whereas a morula is not. 3. Both of these structures contain cells which divide by meiosis. □ A 1 and 2 only □ B 1 and 3 only □ C 2 and 3 only □ D 1, 2 and 3
The only correct answer is A1 and 2 only
B is not correct because the cells divide by mitosis
C is not correct because the cells divide by mitosis
D is not correct because the cells divide by mitosis
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