exam qs lqc 6c

Question 1

Explain how the cells formed from the inner cell mass become specialised

Answer 1

differential gene expression, some genes are active, transcription at active genes, proteins produced from this mRNA, protein permanently modifies cell

Question 2

Deduce how chemicals in the saliva of tomato hornworms can cause the leaf cells to produce these proteins.

Answer 2

chemical stimulus from the tomato hornworms saliva activates a gene, gene for enzyme inhibitor is activated, transcription of this gene to produce mRNA, mRNA translated on ribosome to produce the enzyme inhibitor