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Each type of human cell has a different structure and function because A - Scottish Highers Biology - Question 15 - 2018
Question 15
Each type of human cell has a different structure and function because A. only some of their genes are expressed B. they contain different genes C. some genes are l... show full transcript
Worked Solution & Example Answer:Each type of human cell has a different structure and function because A - Scottish Highers Biology - Question 15 - 2018
Step 1
A. only some of their genes are expressed
Answer
This statement is correct to some extent, as it acknowledges that not all genes in a cell are actively transcribed into messenger RNA, leading to variations in protein production which in turn contributes to differing cell types. However, it does not encapsulate the essence of why human cells have varying structures and functions comprehensively.
Step 2
B. they contain different genes
Answer
This statement is inaccurate as all human cells (with the exception of gametes and some immune cells) typically contain the same set of genes. It is the expression of these genes, rather than the presence of different genes, that leads to the diversity of cell types.
Step 3
C. some genes are lost during differentiation
Answer
This is misleading since differentiation does not involve the loss of genes; rather, it involves selective gene expression. This means that certain genes are turned off or on during the differentiation process, but the genes themselves remain intact.
Step 4