Starter quiz
- True or false? Egg cells contain a nucleus.
- True ✓
- False
- What is the role of the immune system?
- to produce hormones
- to transport materials
- gas exchange
- to digest food
- to fight infection ✓
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- Match the specialised cell to its adaptations that help it carry out its role.
- sperm cell⇔A tail to help it move. ✓
- muscle cell⇔Many mitochondria to provide energy for contraction. ✓
- red blood cell⇔Biconcave shape to provide a large surface area for diffusion. ✓
- palisade mesophyll cell⇔Contains chloroplasts for photosynthesis. ✓
- True or false? Embryonic stem cells can only differentiate into a limited and related number of cells.
- True
- False ✓
- The Oak students are discussing diabetes. Who is incorrect?
- Andeep: Diabetes is where you have eaten too much sugar. ✓
- Sofia: There are two types of diabetes, type 1 and type 2.
- Sam: Diabetes is when a person cannot control their blood sugar levels.
- Lucas: Type 1 diabetes is where cells in the pancreas produce too much insulin. ✓
- Select the option which correctly describes where bone marrow is found and one of its roles.
- Bone marrow is found in bones, where it produces new bones.
- Bone marrow is found on the surface of bones, where it helps them grow.
- Bone marrow is found inside bones, where it produces red and white blood cells. ✓
- Bone marrow is found on the surface of bones, where it provides strength.
- Bone marrow is found inside the bones, where it provides strength.
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Exit quiz
- The two types of stem cells in humans are adult stem cells and ______ stem cells.
- 'embryonic' ✓
- Which diseases can stem cells be used to help treat or have the potential to treat in the future?
- nerve tissue damage ✓
- tuberculosis
- diabetes ✓
- flu
- Parkinson’s disease ✓
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- Which is not a current use of stem cells?
- clone humans ✓
- grow tissues for transplant
- replace cells damaged by drug treatments
- replace cells damaged by disease
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- Why do some people object to the harvesting of embryos as a source of embryonic stem cells?
- embryos could be considered as living ✓
- embryos are difficult to make
- embryos are expensive
- embryonic stem cells can only differentiate into a few types of cells
-
- Which of the following are risks of using stem cells?
- the access to embryonic stem cells is limited
- viruses can spread between stem cells in culture ✓
- there is difficulty in recruiting stem cell donors
- stem cells can be rejected by the patient's body ✓
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- Which type of stem cells are likely to cause an immune rejection?
- adult stem cells from the patient
- embryonic stem cells from a donor ✓
- adult stem cells from a donor ✓
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Worksheet
Presentation
Video
Lesson Details
Key learning points
- Embryonic and adult stem cells can be used in treatments to make new specialised cells to replace damaged ones.
- Examples include using stem cells to treat type 1 diabetes and bone marrow transplants for leukaemia.
- Transplanting stem cells into a patient has risks (e.g. immune rejection, cancer from uncontrolled division, infection).
- Ethical objections to harvesting embryos as a source of embryonic stem cells.
- Debating benefits versus risks and ethical issues.
Common misconception
That stem cells can treat more diseases than they have been proved to. All stem cells used are taken from embryos.
Introducing the idea of induced stem cells and adult stem cells in treatments, but also that the main use is in research rather than full treatment of a disease or condition.
Keywords
Embryonic stem cell - A cell taken from the embryo that can differentiate into any type of specialised cell.
Adult stem cell - A cell found in specific regions of the body that can differentiate into a limited number of related specialised cells.
Specialised cell - A differentiated cell that is adapted to carry out a particular function.
Immune rejection - When a patient’s immune system attacks non-self cells (e.g. transplants).
Ethical - An ethical issue relates to whether an action and its consequences are right or wrong.