e to anal dprt (a) Explain the role of proteins to animals. -acting and myocin helps in protein anity bodies help (b) Describe the roles of the following biomolecules in protein synthesis: (i) mRNA (ii) tRNA (iii) rRNA. (c) Explain why are lipids considered as suitable storage molecules? (d) State the importance of DNA in living cells? 2. (a) Explain why plants lack specialized excretory organs unlike animals (b) Outline two importance each of excretion and osmoregulation. (c) Explain the part played by the following hormones in homeostasis: (i) Insulin (ii) ADH 3. (a) Write short notes on: (iii) Parathormone (i) Trophic levels (ii) Competi Join the effects of the following on the environment​