Eukaryotic and prokaryotic cell ultrastructure: แบบฝึกหัด

Which organelle is responsible for the modification and packaging of proteins into vesicles for transport to the cell surface membrane?

Epigenetic changes can modify gene activation. Which of the following is an example of an epigenetic modification?

What is meant by the term pluripotency in stem cell biology?

Explain the importance of the acrosome reaction in the process of mammalian fertilisation.

Explain how DNA methylation can modify the activation of certain genes without altering the base sequence of the DNA.

Distinguish between the terms pluripotency and totipotency in relation to stem cells.

Topic 3: Voice of the Genome<\/b>
Stem cells have the potential to differentiate into various types of specialised cells.

(a) Distinguish between the terms pluripotency<\/i> and totipotency<\/i>.
(b) Describe how differential gene expression allows a stem cell to become a specialised muscle cell.
(c) Discuss one ethical issue associated with the use of embryonic stem cells in medical therapies.<\/p>