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Eccq 1113: Biological Science Question Paper

Eccq 1113: Biological Science

Course:Civil Engineering

Institution: Technical University Of Kenya question papers

Exam Year:2013/2014

Time: 1 hours
Instructions : Answer ALL questions (30marks)
1. Explain the difference between prokaryotic cell and eukaryotic cell (4mks)
2. Enumerate the importance of
a. Bacteria (3mks)
b. Fungi (3mks)
3. Explain the function of
a. Chromosomes (2mks)
b. Plasma membrane (2mks)
4. Explain how the following cells are specialized
a. xylem (2mks)
b. cells at the back of the eye (2mks)
c. skin (2mks)
5. Differentiate between simple diffusion and facilitated diffusion (2mks)
6. State the importance of lipids in the cell (3mks)
7. A breed of poultry has a long feathersdorminant to short feathers. A long-feathershen was first mated with a short featherscock and produced tenlogs feathers and ten short featherschick. Her second mating with a long featherscock produced a chicks with all of the chicks long-feathered. Use a symbol (L) to represent the allele for long feather and (l) to represent for short feathered
a. What was thr genetical constitution of the long-feathershen? (3mks)
b. How could you determine which of the long-featherschick of the second mating were homozygous (4mks)