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butalik [34]
3 years ago
7

Desacribe an experiment to prove that carbon dioxide is essential for photosynthesis ?

Biology
1 answer:
disa [49]3 years ago
4 0
Take two healthy potted plants. Keep them in a dark room for 2-3 days. Now place each plant in a separate glass. Get a cup containing potassium hydroxide by the side of the plants (the potassium hydroxide is used to absorb carbon dioxide). COver both plants with separate jars. Seal the jars so that the set-up-is-air-tight. Keep the plants in sunlight for two hours. Gently pluck a leaf from each plant. remove the chlorophyll from the leaves by boiling them in alcohol. Wash the leaves with water and then pour iodine solution over them.

We can conclude that the photosynthesis cannot be carried out without carbon dioxide. the leaf from the plant (which was the jar containing potassium hydroxide, which absorbed the carbon dioxide) turns blue black on iodine solution showing that starch is presented in this lead.

so this shows that carbon dioxide is necessary for the processs of photosynthesis to take place
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Large blue whales that are up to 30 meters long live primarily on ________ that is/are only about 6 cm long.
zalisa [80]

Large blue whales that are up to 30 meters long live primarily on krill that is/are only about 6 cm long.

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7 0
2 years ago
Which of the following processes does NOT occur in both plant and animal cells?
zimovet [89]
Photosynthesis occurs in plant cells, but does not occur in animal cells.
8 0
3 years ago
Which term describes an enzyme?<br> substrate<br> reactant<br> catalyst<br> product
kondaur [170]
It would be a catalyst. They help increase the rate of chemical reactions.
5 0
3 years ago
Read 2 more answers
Arrange the events taking place during transcription in order: i) The pre-RNA undergoes processing ii) RNA polymerase moves down
Anastasy [175]

Answer:

RNA polymerase binds to the promoter

Polymerase initiates RNA synthesis at the start point on the template strand

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RNA transcript is released and polymerase detaches from the DNA

The pre-RNA undergoes processing

Explanation:

The promoter is the specific DNA sequence that serves as a binding site for RNA polymerase. The enzyme RNA polymerase recognizes the promoter sequence and binds to it to begin the process of RNA synthesis. The process of RNA synthesis begins at the start site where the process of the unwinding of DNA duplex is initiated.

The unwinding separates the two DNA strands at the start site where RNA polymerase begins the process of synthesis of the new RNA strand. The newly formed RNA strand and RNA polymerase are released from the template strand after the termination of the process.

In eukaryotes, the primary RNA transcript undergoes the process of splicing of introns, the addition of poly-A tails and 5' cap which in turn transform it into the mature mRNA.

8 0
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The point where the musle attaches to the bone to be pulled is called the... A Insertion B Sarcomere
irina [24]
I agree it is insertion 

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