Which could be used to monitor the rate of photosynthesis?

Which could be used to monitor the rate of photosynthesis?

Gas exchange is used most often as the way to measure photosynthesis, and there are a few different techniques. CO2 measurement uses infrared light, while O2 measurement requires electrochemical sensors. Infrared Gas Analyzer: CO2 absorbs infrared light.

How do you measure oxygen production in photosynthesis?

Measuring photosynthesis via the production of oxygen Oxygen can be measured by counting bubbles evolved from pondweed, or by using the Audus apparatus to measure the amount of gas evolved over a period of time.

Can oxygen production be used to measure photosynthetic activity?

Yes, oxygen production can be used to measure photosynthetic activity because it isproduced when electrons are transferred from water to PS-II and subsequently usedto reduce NADP. A higher rate of oxygen production is the result of a higher rate ofphotosynthesis.

What factors influence the rate of oxygen production in photosynthesis?

The main factors affecting rate of photosynthesis are light intensity, carbon dioxide concentration and temperature.

What is the difference between photosynthesis rate and net photosynthesis rate?

The rate of photosynthesis is a gross measure of the rate at which a plant captures radiant energy and fixes it in organic carbon compounds. Net photosynthesis is negative in darkness, when respiration exceeds photosynthesis, and increases with the intensity of PAR.

How can you tell if photosynthesis has occurred?

Starch testing You need to: heat a plant leaf in boiling water for 30 seconds (this stops its chemical reactions) heat it in boiling ethanol for a few minutes (this removes most of its colour) wash with water and spread onto a white tile.

What temperature will result in the highest rate of photosynthesis?

between 50 and 68 degrees Fahrenheit

What affects the rate of photosynthesis?

Three factors can limit the rate of photosynthesis: light intensity, carbon dioxide concentration and temperature.

Why Iodine is used for starch test?

Amylose in starch is responsible for the formation of a deep blue color in the presence of iodine. The iodine molecule slips inside of the amylose coil. This makes a linear triiodide ion complex with is soluble that slips into the coil of the starch causing an intense blue-black color.

What Colour is Benedict’s solution?


How do we detect the presence of starch?

We can use iodine solution to test for the presence of starch. If starch is present is a food item, it turns blue-black colour when iodine solution is added to it.

Which test is used to detect the presence of glucose in food?


Which solution is used to test the presence of starch in food items?

iodine solution

Which chemical is used to detect the presence of starch?

Iodine test

Why starch is used as indicator?

Starch is a viable indicator in the titration process because it turns deep dark blue when iodine is present in a solution. When starch is heated in water, decomposition occurs and beta-amylose is produced. Beta-amylose combines with iodine, resulting in a dark blue color change.

Which test is used to detect the presence of protein in food?

Biuret test

Which chemical is used to know the presence of o2 in the solution?

Methylene blue

How can we check the presence of oxygen?

Oxygen supports combustion so a good method of testing for oxygen is to take a glowing splint and place it in a sample of gas, if it re-ignites the gas is oxygen. This is a simple but effective test for oxygen.

Is methylene blue an indicator?

Methylene blue is widely used as a redox indicator in analytical chemistry. Solutions of this substance are blue when in an oxidizing environment, but will turn colorless if exposed to a reducing agent.

How can oxygen be detected in organic compounds?

Indirect inference is used to detect presence of oxygen in an organic compound. There is no direct test for detecting oxygen. Hence, oxygen is always inferred indirectly in the form of functional groups.

What is qualitative test for elements in organic compounds?

Qualitative Analysis of Elements The most commonly occurring elements in organic compounds are carbon, hydrogen, oxygen, nitrogen, sulphur and halogen elements. There is no direct method for the detection of oxygen. For detecting nitrogen, sulphur and halogens, we can use the sodium fusion test (Lassaigne’s test).

What does methylene blue indicate?

Through color, methylene blue indicates the presence or absence of oxygen. Oxygen is necessary for many forms of life on Earth, so any compound that can help detect its presence is bound to be useful. Methylene Blue: Oxygen Indicator. Water containing the methylene blue indicator is blue when oxygen is present.

Can Methylene Blue kill fish?

Methylene Blue should not be used in the main aquarium as it will destroy or severely defect the biological filter bacteria. It can also permanently discolor equipment and silicate seals blue. About 12 mg/l will treat a saltwater fish for up to one hour and a freshwater fish for up to 10 minutes.

What is methylene blue used to treat?

Methylene blue, an inhibitor of nitric oxide synthase and guanylate cyclase has many uses in medicine. It has been found to improve the hypotension associated with various clinical states. It also improves hypoxia and hyper dynamic circulation in cirrhosis of liver and severe hepatopulmonary syndrome.

What does methylene blue do to cells?

Because of its affinity for DNA and RNA, methylene blue will produce a darker stain in areas where those components are present. In the case of the human cheek cell, methylene blue causes the DNA in the nucleus to stand out so that the nucleus can clearly been seen in a light microscope.

Why is methylene blue used in leak test?

Methylene blue dye or another colored liquid were use to determine whether or not there is a leak during leak testing of particular pack. If there is a leak in sealed pack , the liquid will seep into the package, thereby giving visual proof./span>