40. the scores of geography test of 60 students of zanaki secondary school were
recorded as follow:
class
20-
25 30- 35- 40- 45-
inteval
50-54
24
55- 60-
29
34
39 44 49
59 64
frequenc 7 10
2
65-
69
2
8
8
4
a) prepare the frequency distribution table
b) find the mode
c) draw the cumulative frequency curve (ogive) and use it to estimate the
median

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

What condition is kept close to its set point in osmoregulation? a. body temperature b. platelet count c. blood glucose level d. water balance

Which ocean is on the eastern coast of north and south america? arctic ocean indian ocean pacific ocean atlantic ocean