The diagram shows the cells involved in the repair of skin tissue - Edexcel - GCSE Biology - Question 3 - 2013 - Paper 1
Question 3
The diagram shows the cells involved in the repair of skin tissue.
(i) Complete the sentence by putting a cross (X) in the box next to your answer.
A tissue is a gr... show full transcript
Worked Solution & Example Answer:The diagram shows the cells involved in the repair of skin tissue - Edexcel - GCSE Biology - Question 3 - 2013 - Paper 1
Step 1
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
The correct option is D: similar cells working together. This defines a tissue accurately as it refers to a collection of similar cells that perform a shared function.
Step 2
Suggest how stem cells produce new tissue.
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Answer
Stem cells produce new tissue through the process of differentiation. Stem cells can divide and differentiate into various specialized cell types. When a tissue is damaged, stem cells migrate to the affected area and proliferate, generating new cells that replace the lost or damaged cells, thus facilitating the healing process.
Step 3
Calculate the mass gained by baby X from birth to 24 months.
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Answer
To calculate the mass gained by baby X, subtract the initial mass at birth (2.5 kg) from the mass at 24 months (10.8 kg).
Mass gained = 10.8 kg - 2.5 kg = 8.3 kg.
Thus, the mass gained by baby X over the period is 8.3 kg.
Step 4
Carbohydrates are broken down by ___________________________ into simple _____________________________.
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Answer
Carbohydrates are broken down by amylase into simple sugars.
