Log in
Biology
1
answer
0
watching
229
views

During yogurt fermentation:

What metabolic processes are the microbes undergoing – what specific by-products are they producing that contribute to the changes in the food?

What changes occur in your food during the fermentation? e.g. Does the amount of oxygen in the container change? Why? Same questions for carbon dioxide, pH, alcohol, temperature.

Watch
1
answer
0
watching
229
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Lelia Lubowitz
Lelia LubowitzLv2
28 Sep 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

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.

True or False: Oxygen and glucose are produced by photosynthesisand consumed in cellular respiration.

True

False

Question 2

Select one answer.

10 points

A photosythetic plant has red leaves. Which colors of light willbe most effective at generating oxygen?

red and blue light

red and green light

green and blue light

Question 3

Select one answer.

10 points

Select the incorrect statement regarding respiration andfermentation from the list below.

Both respiration and fermentation use organic molecules.

Respiration produces much more ATP than fermentation

Respiration uses oxygen, fermentation does not.

Respiration produces acidic products, fermentation does not.

Question 4

Select all that apply.

10 points

What are the outputs of photosynthesis? Select all thatapply.

light

CO2

O2

water

sugar

Question 5

Select one answer.

10 points

Respiration is ...

anabolic because it breaks down sugar.

anabolic because it builds CO2.

catabolic because it breaks down sugar.

catabolic because it builds CO2.

Question 6

Select one answer.

10 points

Which of the following is an anabolic pathway?

all of these processes

fermentation

photosynthesis

cellular respiration

Question 7

Select one answer.

10 points

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

100

36

2

40

6

Question 8

Select one answer.

10 points

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

To absorb light that may harm the photosynthetic machinery.

Capture light for photosynthesis at different wavelengths.

To give leaves different colors in the fall.

Question 9

Select all that apply.

10 points

What is required for photosynthesis? (Select all thatapply.)

Oxygen

Carbon dioxide

Carbon monoxide

Water

Glucose

Light

Heat

Question 10

Select one answer.

10 points

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

Water is required

Releases CO2

Glucose is produced.

Releases oxygen

CELL RESPIRATION LAB

Section:

Type in your answers in complete sentences, be precise and specific to earn full credit, reformat if necessary

Purpose: The purpose of this lab activity is to analyze the effect of exercise on cellular respiration

Experiment 1 Enzymes in Food

Why is cellular respiration necessary for living organisms?

Why is fermentation less effective then respiration?

List the two co-enzymes involved in cellular respiration and describe their role.

How many ATP molecules are produced in

Glycolysis

Citric Acid Cycle

Electron Transport

Fermentation

Table 1. Fermentation by Yeast

Tube

Initial Gas (mm)

Final Gas (mm)

Net Change

1% Glucose Solution

1% Sucrose Solution

1% Equal Solution

1% Splenda Solution

1% Sugar Solution

Include your hypothesis for this experiment. Be specific…in other words we sure to include at least one end point you will measure to support your predictions. Natural sugar causes fermentation by producing CO2

Did you notice a difference in the rate of respiration between the sugars? Did any of the artificial sugars provide a good starting material for fermentation? Yes no artificial sugar did not provide a good starting material for fermentation as there was no change in height of gas.

Which tubes displayed evidence of anaerobic fermentation? How did you know? Due to change in gas height we can determine fermentation was occurring during to production of CO2

Hypothesize why some of the solutions were not metabolized. Research their chemical formulas.

How do the results of this experiment related to the role yeast play in baking?

Experiment 2Aerobic Respiration in Beans

How did the color of the bromothymol blue solution in each beaker change over time in each condition?

What is the mechanism driving the bromothymol blue solution color change?

What can be inferred from the color change of the bromothymol blue solution?

What evidence do you have that cellular respiration occurred in the beans? Explain your answer.

What are the controls in this experiment, and what variables do they eliminate?

If this experiment were conducted at 0 °C, what difference would you see in the rate of respiration? Why?

Table 2: Bromothymol Blue Color Change Over Time for Pinto Bean Trial

Time

Pre-Soaked Pinto Beans

Dry Pinto Beans

No Pinto Beans

0 min

30 min

60 min

90 min

120 min

150 min

180 min

24 hours

Table 3: Bromothymol Blue Color Change Over Time for Kidney Bean Trial

Time

Pre-Soaked Kidney Beans

Dry Kidney Beans

No Kidney Beans

0 min

30 min

60 min

90 min

120 min

150 min

180 min

24 hours

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in