Post Utme Biology Past Questions and Answers

Question 491:

Which of the following instruments is used for determining the turbidity of the water?

A. Thermometer
B. Secchi Dec
C. Rain Gauge
D. Hydrometer

Question 492:

The surest way to combine the best qualities of both parents in the offspring is by ____________

A. Cross-breeding
B. In breeding
C. Selective breeding
D. All of the above

Question 493:

Which of the following is not true about gene mutation?

A. It introduces new traits into a population
B. Causes changes in the DNA
C. Is a source of new genes
D. Always affects the chromosome number

Question 494:

In unicellular organisms, essential nutrients can be transported directly to all parts of the body by the process of diffusion only because unicellular organisms have ____________

A. A large surface area to volume ratio
B. A large volume to surface area ration
C. Permeable cell membrane
D. Their body is always immersed in the nutrient material

Question 495:

Which of the following is not present in the nucleus of a cell?

A. Chromosommes
B. Nucleolus
C. Mitochondrion
D. Genes