HomeworkLib
Question

Exercise 1: Consumption of CO2 and production of O2 What is an appropriate hypothesis for this...

Exercise 1: Consumption of CO2 and production of O2

What is an appropriate hypothesis for this experiment?

What is the positive control for this experiment?

What is the negative control for this experiment?

What was the function of the phenol red in this experiment?

Why did you blow bubbles into the water caused the water to change color?

Why did the water the elodea was in change color from yellow to pink after photosynthesis was allowed to be carried out for a period of time?

science   biology   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Answer- the hypothesis should be the photosynthesis cause the conversion of CO2 into O2. The positive control should be the photosynthesis product or availability of light in range of blue and red. and the negative control should be the condition of dark or the shorter wavelength light or too longer wavelength light.

The bubble act as substrate for the reaction and the colour change was observed due to oxidation of phenol red.

0 0
Add a comment
Know the answer?
Add Answer to:
Exercise 1: Consumption of CO2 and production of O2 What is an appropriate hypothesis for this...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Use the 100 mL graduated cylinder to measure and pour 50 mL of distilled water into Beaker 1. Use the 100 mL graduated c...

    Use the 100 mL graduated cylinder to measure and pour 50 mL of distilled water into Beaker 1. Use the 100 mL graduated cylinder to measure and pour 48 mL of distilled water into Beaker 2. Use the 10 mL gradated cylinder to measure and pour 1 mL of saturated sodium bicarbonate solution into Beaker 1. Then, add 2 drops of phenol red to Beaker 1. Gently mix the solution. Use the straw to blow bubbles into Beaker 1. Start...

  • 1. What is the source of carbon for photosynthesis in plants? A. Carbonic acid B. Carbon...

    1. What is the source of carbon for photosynthesis in plants? A. Carbonic acid B. Carbon monoxide C. Carbon Dioxide D. Calcium carbonate 2. H2CO3 forms when CO2 mixes with water. Why does it change the phenol red indicator to yellow? A. It is sodium carbonate, the color change shows a salt has formed. B. It is iron carbonate, it dissolves and releases iron which oxidizes (rusts). C. It is barium carbonate, which is naturally a dark yellow color. D....

  • Eosin Methylene Blue (EMB) Ex. 4.6 16. What is the selective agent in this test? What...

    Eosin Methylene Blue (EMB) Ex. 4.6 16. What is the selective agent in this test? What is the differential agent in this test? 17. E. Coli produces a green metallic sheen when grown on an EMB plate. Why is this? If a pink color is produced by bacteria grown on this plate, what does that indicate? Phenol Red Broth Ex. 5.3 18. What purpose did the uninoculated controls serve in this test? After inoculation, what does a yellow result mean?...

  • In this experiment, you will measure the rate of photosynthesis in isolated chloroplasts using the dye...

    In this experiment, you will measure the rate of photosynthesis in isolated chloroplasts using the dye 2,6-dichloroindophenol (DPIP). The transfer of electrons during the light-dependent reaction results in the production of H+. This H+ ion can reduce DPIP, changing its color from blue to clear. The color can be quantitatively measured with a spectrophotometer. However, in this experiment, you will qualitatively analyze your data. Write a detailed conclusion for your experiment. How did light affect the time it took for...

  • 14. Lab Exercise 5-1 is an interesting way to run these test tube experiments without oxygen...

    14. Lab Exercise 5-1 is an interesting way to run these test tube experiments without oxygen - seal the tube with a layer of clear mineral oil on top (see the figure in the manual). Based on this figure and the Table of Results for this experiment, if the sealed tube is all green or slightly blue but the unsealed tube has any amount of yellow, what type of energy metabolism does that organism have? a. Oxidative only b. Oxidative...

  • photosynthesis lab yes we are using chromatography Photosynthesis lab sheet:2 (0) . Protected View Saved Search...

    photosynthesis lab yes we are using chromatography Photosynthesis lab sheet:2 (0) . Protected View Saved Search A Inni Massoud esign Layout References Mailings Review View Help the Internet can contain viruses. Unless you need to edit, it's safer to stay in Protected View Enable Editing ed credentials are out of date. Please sign in as I Massoud ebnet.org so we can verity your subscription Sign in Photosynthesis A. 1. Chromatography Lab Hypothesis Independent variable: Dependent variables Constant variables: Experimental group...

  • Lab 8 - photosynthesis: What hypothesis is being tested in this exercise? 1. Brighter lights produce...

    Lab 8 - photosynthesis: What hypothesis is being tested in this exercise? 1. Brighter lights produce more glucose during photosynthesis. 2. Carbon dioxide is required for photosynthesis to occur. 3. Brighter lights increase the rate of photosynthesis. 4. NADPH is a product of the light reactions of photosynthesis. Photosynthesis: 6 CO2 + 6 H20+ Energy-→ C,H1206 + 6 O2 Respiration: C,H 1206 + 6 O2-→ 6 co, + 6 H2O+ Energy Figure 8-2. Summary equations for photosynthesis and cellular respiration....

  • 1. What kind of assortment does the F2 generation exhibit? Which of Mendel’s laws does it...

    1. What kind of assortment does the F2 generation exhibit? Which of Mendel’s laws does it support? 2. What are the genotypes of both of the first parent plants? 3. Why do the F1 generation plants only contain tall plants with red flowers? Why are there no short plants or white flowers? 4. According to the activity, what is the genotype for the F1 Generation? What is their phenotype? 5. From the Punnett Square, what is the ratio of short-white...

  • I need help with these questions. Part I.A 1. Why did the indicator initially turn blue...

    I need help with these questions. Part I.A 1. Why did the indicator initially turn blue when NaOH was added to flask A? Consider equilibrium: Hin + H2O + H2O + In [1 mark] 2. When you left the flask A to stand for several minutes after the addition of NaOH, why did the contents of the flask A slowly change colour back from blue to yellow? Consider equilibriums: Hin + H2O + H30+ + In [2 marks] CO2(g) +...

  • Microbiology ONLY answer 1 2 3 4 5 6 7 8 9 10 11 12 13...

    Microbiology ONLY answer 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Salmonella is associated with the handling of contaminated beef True False Escherichia coli is a red-pigmented organism. True O False The results of the MR-VP test can be directly read from the test without the addition of any other chemicals. True False Which medium contains a pH indicator to show pH change caused by fermentation? Glucose Broth Lactose Broth SIM Lactose and...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT