U Short answer questions
1. List the importance of water in human life.
2. What is the current situation of water supply in Nepal? Explain.
3. Write a letter to the drinking water cooperation requesting them to check
the water supply line since there is no water supply in the taps.
4. What are the problems of drinking water in Nepal? Suggest the possible
measures to solve it.

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

What do your cells need to live? a. carbon dioxide b. carbon c. air d. oxygen

You are studying several alleles of an e. coli helicase gene. one allele, called rsr, confers resistance to rs2014, an antibiotic that works by inhibiting helicase activity. bacteria with the rss allele are sensitive to rs2014. another allele, called ts-, produces a temperature sensitive mutation of the helicase. in bacteria with the ts- allele, helicase is inactivated at 42 °c but functions normally at 37 °c. helicase functions normally at both temperatures in bacteria with the ts allele. you obtain the following data while testing four strains of e. coli at different temperatures and doses of rs2014. each number represents the percentage of maximal dna synthesis. based on this data, assign the appropriate genotype to strains a–d in the spaces provided