QUICK QUESTIONS WITH ANSWERS FOR REFERENCE

State two properties of monosaccharide. (2mks) sweet taste soluble in water What is the main function of monosaccharide in organisms? (1mk) Provision of energy. Virus-free. www.avast.com

State the functions of the following parts of a light microscope. Objective lens (1mk) Magnifies the specimen Diaphragm (1mk) Regulates amount of light passing through to the specimen Virus-free. www.avast.com

State the formula for calculating magnification when using the following: Virus-free. www.avast.com

State three factors that affect the rate of diffusion (3mks) Temperature Surface area to volume ratio Surface area Thickness of the membrane Type of medium What does a semi-permeable membrane correspond to in an animal cell? (1mk) Cell membrane Virus-free. www.avast.com

The cells shown below were obtained from two different plant cells which were immersed in 25% and 2% salt solution. Which of the two cells A and B was immersed in; (2mks) 25% salt solution………………………………………………A 2% salt solution………………………………………………..B Comment on the cell placed in 25% salt solution  (2mks) The cell placed in 25% salt solution lost water through osmosis & it became flaccid as the 25% salt solution was Hypertonic to the cell cap of the plant cell. What biological process was being investigated  (1mk) Osmosis Virus-free. www.avast.com

Classify the following carbohydrates into monosaccharides, disaccharides and polysaccharides: Starch, sucrose, maltose, fructose, glucose, and cellulose. (3mks) Virus-free. www.avast.com