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My name is Ann [436]
2 years ago
5

Under normal circumstances, carbon dioxide is excreted from the body by what structure?

Biology
1 answer:
Sati [7]2 years ago
5 0

Under normal circumstances, carbon dioxide is excreted from the the body by lungs.

Human beings have a pair of lungs that are spongy in nature and located on the sides of the chest. They are surrounded by pleura which is a layer of thin tissue. The cells in the body require oxygen. The primary function of the lungs is to transport oxygen from the air we breathe to the cells of the body and excrete carbon dioxide received in exchange for oxygen from the cells. Alveoli are present within the lung parenchyma where the exchange of gases takes place with the blood capillaries. Carbon dioxide is then exhaled from the lungs.

The lungs also serve as a means for the absorption and excretion of water and other pharmacological agents and also protect the body from unfavorable substances.

To learn more about lungs, click here:

brainly.com/question/4779754

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What is the purpose of the electron transport chain in the thylakoid membrane?
Feliz [49]

Answer:

To produce energy in form of ATP

Explanation:

The thylakoid membrane harbors photosystems that will receive light photons, ejecting electrons from a main chlorophyl molecule in a reaction center, to other acceptors.  These electrons will reach the electron transport chain to create a proton gradient, and subsequently, to produce ATP.  Later on these electrons will reach the other photosystem, to produce reducing power.  This is in plants.

Cyclic photosystems also exist, in some bacteria, for example,  and only produce energy as ATP.  They also have an electron transport chain.

6 0
4 years ago
The majority of water found on Earth is: <br><br> ice<br> water vapor<br> fresh water<br> salt water
sergejj [24]

The correct answer is D. Salt water.

Explanation

The hydrosphere is the system that groups all the waters of the earth that include oceans, seas, rivers, lakes, lagoons, frozen waters like ice and snow, among others. The water of the earth can be classified between salt water and freshwater, within the first group we find the oceans and the seas that represent two thirds of the total water of the earth, that is, 93 percent of the total water of the earth, a figure close to 1 370 323 000km³; the rest of the water is fresh and consists of rivers, lakes, lagoons, streams, groundwater, and glaciers. So, the correct answer is D. Salt water

4 0
3 years ago
What are monosaccharides made up of?
77julia77 [94]
<h2>Answer</h2>

The monosaccharides is formed by just bounding of C, H and O.

<h2>Explanation</h2>

Monosaccharides are simplest molecule or unit in the carbohydrates group which united with each other to form di, tri or polysaccharide structure. As these are the simplest unit in carbohydrates, they are only formed by numbers of carbon, oxygen and hydrogen atoms. The number of atoms in the chain of monosaccharides varies with changing required compound. for example in deoxyribose, one of hydrogen is not present in its structure but present in ribose.

3 0
3 years ago
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4 years ago
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dybincka [34]
Wouldn't the population then become a mix of both turning into purple.
5 0
3 years ago
Read 2 more answers
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