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2. Which one of tge following events occurs during telophase of mitosis in the meristematic cells of a root tip? Cleavage of the cytoplasm Replication of the centrioles Replication of the chromosome Formation of the cell plate
3. The following are mmetabolic processes (i)synthesis of plasma protein (ii)regulation of fat metabolism (iii)storage of vitamin A (iv)manufacture of digestive enzymes Which of these are functions of the liver? (i), (ii) and (iii) (i), (ii) and (iv) (i), (ii) and (iv) (ii), (iii) and (iv)
4. What happens to most of the reduced NADH2 molecules in cell metabolism? Direct use in the synthesis of starcfrom glucose Oxidation in mitochondrial ATP formation Oxidation in the Calvin Cycle Combination with sulpheric acid as part of the Krebs cycle
5. Which base sequence below will pair with AGU ? TGC TCA GCC ATT
6. Which one of the following would cause phenotypic variation among organisms of the same genotype? Exposure to different environments Continouse variation within the species Different sexes Mutation
7. The phylogenetic approach to classification is used because it groups together all animals that show Analogous structures Homologous structures Convergent evolution Adaptive radiation
8. Which one of the following sequences correctly represents the action of notifying bacteria? Ammonium -> nitrite -> nitrate Ammonium -> nitrate ->nitrite Nitrite -> ammonium -> nitrate Nitrite ->. nitrate -> ammonium
9. Which one of the following would speed up the phosphorylation of hexose sugar? A decrease in ADP concentration A decrease in the concentration of APT An increase in concentration of phosphorylase An increase in the concentration of phosphorylated hexosees
10. Changes in the level of carbon dioxide mammalian blood is detected by Carotid and aortic bodies Medulla oblongata Cardio-vascular center Hypothalamus
11. Which one of the following may be a result of inbreeding ? Improved fertility Accumulation of lethal genes Polyploidy Increased mutation rate
11. Which one of the following is the main function of the Golgi apparatus in the living cell? Destruction of worn out cells organelles Synthesis of cell wall components Synthesis of protein Intracellular transport
13.Which of the following methods is most suitable for establishing the population of the paramecium in a pond ? Capture-recapture method Total count Removal sampling Random sampling
14. Which of the following pairs of proteins is found in skeletal muscle ? Actin and myosin Keratin and actin Myosin and fibrogen Myosin and collagen
15. The physiological important of the hair-pin counter multiplier system in mammalian kidney is to ensure that Much water is excreted out through the kidney Much water is reabsorbed Glucose in not lost in urine All urea is excreted in urine
I got 14 out of 15 is it not good ?
I got 14 out of 15 is it not good ?
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