SECTION 5 QUESTION 2
21. The diagram below shows the apparatus used to investigate the rate of photosynthesis in a
submerged plant. The light intensity to which the plant is subjected, was decreased at regular
Intervals by moving the light source away from the plant. The average number of bubbles released
pet minute, was counted and recorded for each distance.
study the information provided and answer the questions that follow.
The results obtained is shown in the following table.
Distance from lamp (cm)
5
10
20
25
35
40
50
Number of bubbles per minute.
70
65
40
25
15
5
2
2.1.1. Formulate a hypothesis for the above investigation.
2.12. Slate the following
(1) Dependent variable
(2) independent variable
(3) Fixed variable
2.1.3. State ONE way in which the reliability of the investigation could be improved.
2.1.4. Draw a line graph to represent the data in the table
(13)​

What effect does plate tectonics have an organic evolution

Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse

Astudent from one of the research labs is having trouble preparing a slide for examination and photographing. the bacterial slide that he has brought to you was prepared using a commercially purchased stain. he has asked for your in determining what he is doing wrong so that he can change the lab protocols and continue on with his project. after examining the slide under oil immersion, you determine that no bacteria are present even though the student is able to show you the culture he used to make that slide that has visible growth in the liquid medium. which of the following statements does not explain the fact that there are no bacteria present on the student’s slide? by not allowing a glass slide to completely air dry before heat fixation, the flame will cause the surrounding water to boil and this will damage the bacterial cell. overheating during the fixation step boiled the water within the bacterial cells and resulted in the cells bursting. insufficient heating of the slide did not drive out the thin layer of water and this resulted in minimal bonding between the bacteria and the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide.