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Natali5045456 [20]
3 years ago
10

Which phrase best describes a biogeochemical cycle?

Biology
1 answer:
timama [110]3 years ago
7 0

Answer:

(C)the movement of a chemical substance between the solid,liquid,and gaseous state of matter

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The process that requires energy (atp) for digested nutrients to pass through the small intestinal wall into the villi is called
Sladkaya [172]

The process that requires energy  for digested nutrients to pass through the small intestinal wall into the villi is called active transport

In the process of digestion, complex food molecules are broken down into macromolecules which are absorbed by the body. The absorption of nutrients such as glucose, vitamins, and amino acids takes place in the small intestine.

The small intestine contains tiny hair-like projections called the microvilli that are rich in blood vessels. These structures help in the absorption of nutrients.

As the concentration of these nutrients is higher in the bloodstream than in the intestine. The absorption of nutrients requires energy for the movement of nutrients from lower concentration to higher concentration. This energy-driven transportation is called active transport.

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3 0
2 years ago
The act of breathing raises the blood oxygen levels, lowers the blood carbon dioxide concentration, and raises the blood pH. Acc
Alexus [3.1K]

C. a rise in blood carbon dioxide concentration

Explanation:

Negative feed back mechanism refers to the control mechanism in which a product of a particular pathway controls the switch on and switch off of that particular pathway.

Since breathing increases the blood oxygen concentration and lowers carbon dioxide concentration and pH. The sensors that regulate the breathing should respond to oxygen concentration as the carbon dioxide is the by-product of respiration and is responsible for increasing blood pH. Thus  increased Carbon dioxide levels in blood is the only factor which will trigger breathing.

5 0
3 years ago
Name two cell structures found in plant cells but not in animal cells, and describe their functions.
stich3 [128]
Chloroplasts: <span>work to convert light energy of the Sun into sugars that can be used by cells. (photosynthesis)

Vacuoles: Main function is just a space-filler but can also fill digestive functions and their interiors can be used as storage for nutrients.</span>
4 0
3 years ago
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Which of the following equations represents the right chemical process that occurs in photosynthesis? Question 8 options: A) Six
AlexFokin [52]

Six molecules of carbon dioxide plus six molecules of water plus light energy converts to six molecules of oxygen plus sugar, Thus, the correct option is A.

<h3>What is photosynthesis?</h3>

Photosynthesis is the process through which plants use sunlight to create their own nourishment. Through a sequence of reactions, light energy from the sun is turned into chemical energy, which is then stored in the form of food.

In the presence of sunlight, 6 molecules of carbon dioxide (CO2) and 6 molecules of water (H2O) react to form 1 molecule of glucose sugar. During photosynthesis, 6 molecules of oxygen are formed in addition to glucose.

The following is a balanced chemical reaction for photosynthesis:

   

                                     Sunlight

6CO2    +              6H2O  —---------> C6H12O6 +     6O2.

(carbon                (water)                  (glucose)       (oxygen)  

dioxide)

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7 0
2 years ago
A salamander relies on hydrogen bonding to stick to various surfaces. therefore, a salamander would have the greatest difficulty
Talja [164]

The hydrocarbons' surface.

Because the covalent link that exists between hydrocarbon surfaces is different from the surfaces to which the salamander can cling, the salamander has difficulties adhering to these surfaces.

The hydrogen bond is the bond that exists between hydrogen and a bigger molecule like nitrogen or oxygen, whereas a covalent bond includes sharing electrons.

<h3>What Are Hydrocarbons and What Do They Do?</h3>

Crude oil, natural gas, and coal are all examples of hydrocarbons, which are organic compounds made of hydrogen and carbon. The world's primary energy source and a highly flammable substance, hydrocarbons. Petrol, jet fuel, propane, kerosene, and diesel are only a few of its uses.

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5 0
2 years ago
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