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Stem Cells OALH

Last updated over 4 years ago
24 questions
Do Now
1

State three differences between plant and animal cells?

1

Give an example of a specialised animal and plant cell

1

Put the following in order of size from smallest to largest: tissue, organ system, organ, cell

1

State the units for power

1

Calculate the mean from the following: 1.43 1.45 1.41 1.40

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Put the following in order of size from smallest to largest: circulatory system, Heart, blood cells, Connective (blood) tissue

Key Knowledge
1

Define Stem Cell

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Name three places human stems cells can be found

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State where plant stem cells are found

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Give two examples of conditions human stem cells can be used to treat

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Explain why some people might think it is unethical or immoral to use stems cells from an embryo.

Recall Quiz
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A) State where plant stem cells are found
1. Roots, leaves and stem
2. Roots, flowers and stem
3. Leaves, bones and stem

B) Name a place were human stem cells are made
1. umbilical cord blood
2. babies blood
3. brains

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C) Why do some people disagree with using stem cells
1. Because destroying the embryo could be destroying a life
2. Because destroying the embryo couldn’t destroy a potential life
3. Because destroying the embryo could be destroying a potential life

D)Which is not an example of using plant stem cells
1. Clone rare endangered species
2. Produce disease-resistant crops
3. Making a new plant species

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True or false:
1.Stem cells are specialised cells.
2.Stem cells can be found in human bone marrow.
3.Stem cells can be found in embryos.
4.Stem cells can be found in the stem of a plant.
5.Stem cells will be rejected by your own body.

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I Do: Describe one pro of using umbilical cord stems cells over embryonic stem cells.

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We Do Describe one advantage of using umbilical cord stems cells over embryonic stem cells in treatment of diseases.

"One advantage of using stem cells from an umbilical cord is that the ………………………..whereas using the stem cells from an embryo ……………………………….."

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You Do: Describe one disadvantage of using stems cells from the umbilical cord over a baby rather than an embryo.

"One disadvantage of using stemcells from an umbilical cordcompared to stem cellsfrom an embryo is ………."

Complete the exam questions
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1. Human cells and yeast cells have some parts that are the same.
(a) The diagram shows a yeast cell.
Parts A and B are found in human cells and in yeast cells. On the diagram, label parts A and B. (2)

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(c) Human stem cells can develop into many different types of human cell.
(i) Use the correct answer from bellow to complete the sentence.
embryos
hair
nerve cells
Human stem cells may come from
.........................................................................................................

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(ii) Use the correct answer from bellow to complete the sentence.
cystic fibrosis
paralysis
polydactyly
Human stem cells can be used to treat
.........................................................................................................

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2ai) After a baby is born, stem cells may be collected from the umbilical cord. These can be frozen and stored for possible use in the future.
(i) What are stem cells?

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(ii) Suggest why it is ethically more acceptable to take stem cells from an umbilical cord instead of using stem cells from a 4-day-old embryo produced by In Vitro Fertilisation (IVF).

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(iii) Stem cells taken from a child’s umbilical cord could be used to treat a condition later in that child’s life.
Give one advantage of using the child’s own umbilical cord stem cells instead of using stem cells donated from another person.

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(iv) Why would it not be possible to treat a genetic disorder in a child using his own umbilical cord stem cells?