11. (a) (i) What is a tissue?
(ii) Name two tissues found in animals - Leaving Cert Biology - Question 11 - 2007
Question 11
11. (a) (i) What is a tissue?
(ii) Name two tissues found in animals.
(b) Tissue culture is used to make a skin graft for patients who have been severely burned.
(i... show full transcript
Worked Solution & Example Answer:11. (a) (i) What is a tissue?
(ii) Name two tissues found in animals - Leaving Cert Biology - Question 11 - 2007
Step 1
What is a tissue?
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Answer
A tissue is defined as a group of cells that have the same function or specialized cells that work together to perform a particular activity.
Step 2
Name two tissues found in animals.
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Answer
Two examples of tissues found in animals are:
Muscle tissue
Nervous tissue
Step 3
What is meant by tissue culture?
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Tissue culture refers to the process of growing cells or tissues in a controlled environment, often in a laboratory, under sterile conditions.
Step 4
Name the gas needed to release energy to make a skin graft.
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Answer
The gas needed for cellular respiration to release energy is oxygen.
Step 5
Suggest the most suitable temperature to make skin cells grow.
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The most suitable temperature for skin cells to grow is approximately 37°C (plus or minus 2 degrees), which is close to the normal human body temperature.
Step 6
Suggest a reason why sterile conditions are needed in tissue culture.
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Sterile conditions are essential in tissue culture to prevent bacterial growth or contamination, which can negatively affect cell growth and the success of culture.
Step 7
What type of cell division, mitosis or meiosis, is involved in tissue culture?
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Mitosis is the type of cell division involved in tissue culture, as it allows for the growth and repair of tissues by producing identical daughter cells.
Step 8
Give one other application of tissue culture apart from skin grafting.
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One other application of tissue culture includes plant breeding or micropropagation, which involves cloning plants to produce large numbers of identical specimens.
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