QUESTION 5 In experiment 1, which test tube had the bigger bubble at the end of
ID: 53008 • Letter: Q
Question
QUESTION 5
In experiment 1, which test tube had the bigger bubble at the end of the experiment?
tube 1
tube 2
tube 3
all tubes were equal
10 points
QUESTION 6
In experiment 1, what is the role of the sodium bicarbonate?
It is a source of glucose
It is a source of carbon dioxide
It binds to the ammonium and detoxifies it
It is the source of cAMP
10 points
QUESTION 7
Grasses have higher levels of chlorophyll than pine trees. Why might this be the case?
grass has a slower growth rate
grass has a faster growth rate
pine trees need more energy for reproduction
pine trees need less energy fro reproduction
10 points
QUESTION 8
To increase the growth rate of plants, a greenhouse owner decides to use lightbulbs of different colors. Which color shoud she NOT use?
green
blue
red
purple
tube 1
tube 2
tube 3
all tubes were equal
Explanation / Answer
6. Details of experiment are not given. In general, sodium bicarbonate is used as a buffer in equilibration with atmospheric CO2. It releases CO2 when required. Therefore, the correct answer is - It is a source of carbon dioxide
7. Grasses grow faster and need more photosynthetic activity. Thus the correct answer is grass has a gaster growth rate.
8. Green colour should not be used, as plants do not absorb green light, they reflect it. To increase growth, blue, red, and purple lights are most suited in the same order.
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