2023 OCR A LEVEL BIOLOGY QUESTION PAPER 2 [H420/02: Biological diversity]

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2023 OCR A LEVEL BIOLOGY QUESTION PAPER 2 [H420/02: Biological diversity]Â Â

1 Which option correctly describes a tissue?
Â A A group of cells performing similar functions
Â B A group of organs performing a specific function
Â C A group of similar cells performing a specific function
Â D A group of similar cells performing a variety of functions
Your answer [1]
2 Bone marrow stem cells are a source of erythrocytes.
Which statement about bone marrow stem cells and their role in the production of erythrocytes isÂ
correct?
Â A Bone marrow stem cells are totipotent and can therefore differentiate into any type of cell.
Â B Erythrocytes are the only blood cell produced from bone marrow stem cells.
Â C Erythrocytes need to be replaced from bone marrow stem cells because erythrocytes areÂ
unable to undergo mitosis.
Â D In humans, differentiation of bone marrow stem cells into erythrocytes involves the synthesisÂ
of a haploid nucleus.
Your answer

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Author	Future Focus
Published	30 Jul 2024
Included files	PDF
2023 OCR A LEVEL A LEVEL BIOLOGY BIOLOGY OCR A LEVEL BIOLOGY H420/01 BIOLOGY QUESTION PAPER 2 OCR BIOLOGY