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Anna71 [15]
3 years ago
15

What are colored chemical compounds that absorb light

Biology
1 answer:
sammy [17]3 years ago
6 0
Pigments are colored chemical compounds that absorb light and produce color.

Chlorophyll is an example of a pigment. It is a green pigment found in chloroplasts of plants, algae, and bacteria. It is vital to the performance of photosynthesis in plants. 

For photosynthesis to occur, four factors must be present. Sunlight, carbon dioxide, water, and chlorophyll.
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Choose the correct sequence of the prokaryotic operon. A) gene, operator, promoter B) promoter, operator, gene C) operator, prom
Harrizon [31]

Answer:

The correct answer is option B, that is, promoter, operator, gene.

Explanation:

In a prokaryote, just in front of the operator, the promoter is located, and just in front of the structural genes, the operator is located. All these in combination give rise to an operon.  

Any gene, which codes for an enzyme or a structural protein is termed as a structural gene, in the lac operon, a structural gene codes for three distinct kinds of enzymes. A short sequence of DNA is situated just in front of the structural gene, which is known as the operator. An operator functions as a switch for transcription, that is, it monitors whether the process of transcription will take place or not.  

Just in front of an operator, a sequence of a promoter is present, and for the transcription and translation of all the structural genes, the RNA polymerase needs to combine first with the promoter. In case, if no transcription is to take place, then the operator allows the repressor to bind with it and prevent the attachment of RNA polymerase with the promoter. Hence, the correct sequence of a prokaryotic operon is a promoter, operator, and gene.  

4 0
2 years ago
How does the digestive system interact with the rest of the body
Ainat [17]

Answer:

The Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go. It Filters out waste from food and pushes it through intestines and out the body.

Explanation:

As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body.

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What is the name of the muscular layer in blood vessels.
AfilCa [17]

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tunica media hope this helps

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