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2 years ago

How is the the net production (NP) of a crop field calculated? What are factors that will affect the NP?

Biology

2 answers:

maks197457 [2]2 years ago

7 0

Answer:

In order to reach Net Primary Productivity, it is necessary to deduct from the Gross Primary Productivity the total organic matter that is consumed from a harvest field. So, we have to: Net Primary Productivity (NP) = Gross Primary Productivity - organic matter consumed in the respiration process of the plants.

Explanation:

The factors that influence the net and gross productivity of the ecosystem are: water, light, carbon dioxide and the available nutrients. The more sunlight the system receives, the greater the productivity. Thus, in tropical regions - where there is more sunlight and temperatures are higher throughout the year - productivity is higher than in places with a temperate, cold or polar climate.

It is estimated that 5% of sunlight is transformed into Gross Primary Productivity. The percentage transformed into Net Primary Productivity varies from 2.5% to 4%. For breathing, the plant takes advantage of 1% to 5% of solar energy. These data reveal that sunlight is not the only important factor for productivity: if there is no water in the place, as in deserts, productivity is low, as the soil does not offer conditions for the development of various species.

hjlf2 years ago

6 0

NPP can be directly assessed by measuring plant traits or harvesting plant material on the ground, but across large areas remotely sensed images can be used to estimate NPP.. im trying to help

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What's the difference between active immunity and passive immunity?

Paha777 [63]

The difference between active and passive immunity is that your body produces antibodies in active immunity and in passive immunity, the antibodies are made outside the body. (D)

What is active and passive immunity?

Active immunity is a type of immunity that occurs when the immune system of a person is responsible for protecting them from a pathogen or from an infection.

Passive immunity is a type of immunity that involves the introduction of antibodies from another person or from outside the body of a person.

Antibodies are produced by an individual in active immunity but in passive immunity, antibodies are being transferred to an individual to help boost their immune system in fighting diseases.

Thus, the difference between active and passive immunity is that your body produces antibodies in active immunity and in passive immunity, the antibodies are made outside the body. (D)

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4 0

1 year ago

If a mutation occurred that increased the number of exons in a sequence of DNA, what impact would this have on the protein forme

erastovalidia [21]

Answer:

See the answer below

Explanation:

An increase in the number of exons in a sequence of DNA would result in another protein with a longer amino acid sequence.

Exons are the coding part of a gene as opposed to introns. After transcription, the non-coding part of the gene - the introns - are removed by splicing and the exons are joined back together. The final RNA that will undergo translation consists of only exons.

The longer the exons in a gene, the more the codons present in the corresponding mRNA from the gene, and the more the number of amino acids that would be translated from the mRNA. A longer amino acid chain would result in a different protein.

Hence, a mutation that causes an increase in the number of exons in a sequence of DNA would result in a different protein with a longer amino acid sequence.

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2 years ago

Carbohydrates must be consumed every 3 to 4 hours to prevent depletion of the glucose in our blood.

Varvara68 [4.7K]

Answer: option B) False

Explanation:

The body relies on SEVERAL sources for its energy or glucose supply.

Firstly, understand that Glucose could be supplied from the following:

Glycogenolysis (Glycogen break down induced by Glucagon)

Amino acids metabolism (once amine group is removed)

Fatty acid oxidation.

All of the pathways mentioned can directly or indirectly yeild GLUCOSE, thus making it UNNECESSARY for Carbohydrate meals to be consumed every 3 to 4 hours.

Therefore, the answer is False

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2 years ago

What are Characteristics of osteoclasts?

Gnesinka [82]

Answer:

A GENERAL CHARACTERISTICS OF THE OSTEOCLAST. Osteoclasts are large, multinucleated cells that are the primary bone-resorbing cells. They are hematopoietic in origin and are formed by fusion of mononuclear precursors in the marrow.

Explanation:

Hope this helps

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2 years ago

Are chromosomal abnormalities such as the ones shown confined only to certain parts of the body

mario62 [17]

Chromosomal abnormalies effect all of the bodies cells. Certain anomolies effect different body parts in different ways. One anomily may effect the heart and the other vision or hearing. Hope this helps. Have a nice day. Feel free to ask more questions.

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