Bio 1010 - General Biology » Fall 2022 » Lab 5, 6, 13 Quiz

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Question #1
In the Aerobic Respiration Lab, why did lime water become cloudy after blowing air into it? Because it became _________________ and we were seeing it precipitate.
A.   calcium carbonate
B.   calcium hydroxide
C.   ATP
D.   water
Question #2
In Exercise 6: Activity 2, the presence of starch in the leaves is stained with _______________.
A.   iodine
B.   Biuret reagent
C.   silver nitrate
D.   Benedict's reagent
Question #3
What was the reason that the leaf was boiled in ethanol during the Photosynthesis Lab?
A.   To remove chlorophyll from the leaves
B.   To soften the leaves
C.   To stain the leaves
D.   To make iodine more soluble
Question #4
The gas exhaled by aerobic respiration is ____________.
A.   carbon dioxide
B.   nitrogen
C.   oxygen
D.   hydrogen
Question #5
It started with 10 grams of Carbon-14. Then, only 2.5 grams were discovered. How many years have passed, if the half-life of Carbon-14 is 5700 years?
A.   2
B.   17100
C.   5700
D.   11400
E.   3
Question #6
All of these are required for photosynthesis except ________________.
A.   carbon dioxide
B.   oxygen
C.   chlorophyll
D.   water
Question #7
if we had 10 grams of Carbon-14, after two half-lives later, how many grams will be left?
A.   40 g
B.   5 g
C.   2.5 g
D.   20 g
E.   0 g
Question #8
In the Aerobic Respiration Lab, you blew into lime water using a straw. What was the gas that was dissolved in lime water by doing it?
A.   carbon dioxide
B.   hydrogen
C.   nitrogen
D.   oxygen
E.   methane
Question #9
In the Photosynthesis Lab, some parts of the leaf were stained by iodine. Iodine stained ____________________.
A.   cell wall
B.   starch
C.   glucose
D.   chlorophyll
E.   mitochondria
Question #10
At the beginning, we had 20 grams of Carbon-14. Later, we found that only 2.5 grams were left. How many half-lives have been passed?
A.   4
B.   5700
C.   3
D.   1
E.   2
Question #11
One of the products produced by photosynthesis is ___________________.
A.   glucose
B.   water
C.   carbon dioxide
D.   mitochondria

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