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Cellular Respiration – Production of Carbon Dioxide Experiment

Why did the water level in the CO2 collection tube move downward (respirometer)?

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Jamar Ferry
Jamar FerryLv2
28 Sep 2019

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Related questions

Experiment 1 Yeast cells produce ethanol and CO2 during fermentation. We will measure the production of CO2 to determine the rate of anaerobic respiration in the presence of different carbohydrates. Note: Sucrose (a disaccharide) is made up of glucose and fructose. Glucose is a monosaccharide. Completely fill the smallest tube with water and invert the larger tube over it. Push the small tube up (into the larger tube) until the top connects with the bottom of the inverted tube. Invert the respirometer so that the larger tube is upright (there should be a small bubble at the top of the internal tube). Repeat this several times as practice

1. All of the following are correct descriptions of photosynthesis except:

A) The Calvin Cycle is endergonic.

B) Electrons are supplied to the reaction center via the splitting of water, which yields O2 as a byproduct

C) Chlorophyll and accessory pigments capture energy from the sun in the form of electrons, which they use to drive the electron transport chains of photosystems I and II.

D) ATP and NADPH generated in the light-dependent reactions are used to power CO2 fixation via the Calvin cycle in the light-independent reactions.

2. In glycolysis and the TCA cycle, glucose is _____ down to CO2; this process _____ lots of ATP and reducing power. In photosynthesis, CO2 is ______ back to sugar by the _______ of lots of ATP and reducing power.

A) reduced; requires; oxidized; production

B) oxidized; requires; reduced; production

C) oxidized; produces; reduced; input

D) reduced; produced; oxidized; input

3. Which description accurately compares cellular respiration and photosynthesis?

A) Photosynthesis uses energy captured from sunlight to power the reduction of carbon dioxide to sugars; cellular respiration oxidizes sugars to yield energy for the cell.

B) The ATP produced via cellular respiration is needed to power the reactions of photosynthesis

C) The pathways of photosynthesis are those of cellular respiration run in reverse.

D) Photosynthesis captures energy from sunlight to oxidize carbon dioxide to sugars; cellular respiration reduces these sugars to yield energy for the cell.

While Jill and Andre were studying for their Biology exam, Andre said, “Animals perform cellular respiration and plants perform photosynthesis.” What about Andre’s statement should Jill have told him was incomplete?

Animals also perform photosynthesis.

Plants do not perform photosynthesis.

Animals do not perform cellular respiration.

Plants also perform cellular respiration.

There is nothing incomplete about Andre’s statement.

Question 3

Select one answer.

10 points

Select the incorrect statement regarding respiration and fermentation from the list below.

Respiration produces much more ATP than fermentation

Respiration produces acidic products, fermentation does not.

Both respiration and fermentation use organic molecules.

Respiration uses oxygen, fermentation does not.

Question 4

Select one answer.

10 points

Energy is harvested from which reaction to produce ATP?

Carbon dioxide and water → sugar and oxygen.

Sugar and oxygen → carbon dioxide and water.

Question 5

Select one answer.

10 points

What is the source of energy for photosynthesis?

O2

Light

CO2

Water

Sugar

Question 6

Select one answer.

10 points

One way to explain how cellular respiration and photosynthesis relate to each other is to say that:

Plant cells use the oxygen produced by respiration for photosynthesis.

The oxygen produced by photosynthesis, once released to the environment, is the oxygen able to be used as the electron acceptors for cellular respiration.

Cellular respiration is a series of reduction reactions while photosynthesis is a series of oxidation reactions.

The two processes are not related.

The use of oxygen by plants contributes to the greenhouse effect.

Question 7

Select one answer.

10 points

The calculated net amount of ATP produced from one glucose molecule during aerobic respiration in eukaryotes is

100

2

40

36

6

Question 8

Select one answer.

10 points

All of the following statements is true of photosynthesis, EXCEPT:

Releases CO2

Releases oxygen

Glucose is produced.

Water is required

Question 9

Select one answer.

10 points

Which of the following is an anabolic pathway?

photosynthesis

cellular respiration

fermentation

all of these processes

Question 10

Select one answer.

10 points

Plant leaves contain many different pigments. What is the purpose of having multiple pigments?

Capture light for photosynthesis at different wavelengths.

To absorb light that may harm the photosynthetic machinery.

To give leaves different colors in the fall.

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