The two functions of prostaglandins. Concept introduction: Local hormones are biologically active polypeptides that do not circulate within the blood. They are a large group of short-lived signaling molecules and are released by the cells. These hormones bind to either same cells or neighboring cells. They can be activated or inactivated quickly.

Question

Transcription and Translation 1. What is the main function of transcription and translation? (2 marks) 2. How is transcription different in eukaryotic and prokaryotic cells? (2 marks) 3. Explain the difference between pre-mRNA and post-transcript mRNA. (2 marks) 4. What is the function of the following: (4 marks) i. the cap ii. spliceosome iii. Poly A tail iv. termination sequence 5. What are advantages to the wobble feature of the genetic code? (2 marks) 6. Explain the difference between the: (3 marks) i. A site & P site ii. codon & anticodon iii. gene expression and gene regulation 7. Explain how the stop codon allows for termination. (1 mark) 8. In your own words, summarize the process of translation. (2 marks)

Answer 1

Question

Chapter 49.2, Problem 3C

Summary Introduction

To determine: The two functions of prostaglandins.

Concept introduction: Local hormones are biologically active polypeptides that do not circulate within the blood. They are a large group of short-lived signaling molecules and are released by the cells. These hormones bind to either same cells or neighboring cells. They can be activated or inactivated quickly.

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