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Leto [7]
3 years ago
10

The principle difference between point source and nonpoint source water pollution is _______. a. whether the pollution is organi

c or inorganic b. the number of sources of pollution c. the amount of pollution d. whether it is from commercial or agricultural sources
Biology
2 answers:
Wittaler [7]3 years ago
5 0
I believe the answer is B - point source comes from a specific site, non-point comes from many sources
marysya [2.9K]3 years ago
5 0

Answer:  b. the number of sources of pollution

The point source pollution can be defined as the pollution whose source of origin can be traced back and the further pollution can be prevented. For example sewage drainage in the pond. The non-point source pollution is the one whose source of origin can be many and cannot be traced back to a single source. For example rain water causing surface runoff which is transferring pesticides, organic matter, sewage water in the water body.

The principle difference between point source and nonpoint source water pollution is the number of sources of pollution. In the point source pollution the number of sources of pollution can be determined and traced back whereas in the nonpoint source pollution number of sources of pollution remains undetermined.

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Write any four uses of water agriculture • Answers​
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  • Water is essential for our lives as 70%of our body contains water.
  • Water is used for agriculture without which we can't exist.
  • Water is also used for cooking.
  • Water is used for infrastructure.
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Select the correct location on the image. Keiko’s teacher was discussing the theory of endosymbiosis. She asked Keiko to mark th
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Mitochondria in animal cells, while mitochondria and chloroplast in plant cells most closely resembled prokaryotes.

<h3>What do you mean by endosymbiotic theory?</h3>

This theory states that organelles such as mitochondria and chloroplast in eukaryotic cells were once prokaryotic microbes.

These organelles when occupied in prokaryotes divide by binary fission. But they become a part of the eukaryotic cell now and result in a symbiosis relationship between each other.

Therefore, Mitochondria in animal cells, while mitochondria and chloroplast in plant cells most closely resembled prokaryotes.

To learn more about Endosymbiotic theory, refer to the link:

brainly.com/question/1698852

6 0
2 years ago
Two test tubes are filled with a solution of bromthymol blue. A student exhales through a straw into each tube, and the bromthym
AlekseyPX

Explanation:

The plant is utilizing CO2 in photosynthesis

Photosynthesis produces glucose and O2 from inorganic CO2, light energy and water.

6CO2 + 6H20 + (energy) → C6H12O6 + 6O2

Bromothymol blue, an acid indicator, goes from blue to yellow when reacting with acid. The color change in sunlight  confirmed the use of CO2, dissolved within the solution as carbonic acid- its removal from the solution makes the more basic, and the solution goes from yellow (acidic) to blue (alkaline).

CO2 + H2O ↔ H2CO3

Further Explanation:

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released.

Occuring in several complex steps, photosynthesis is a rate limited reaction, it depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent. Water supplies chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II.

Additionally,

  • water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions and produces molecules of the energy storage molecule ATP through an electron transport chain.
  • This occurs in the thykaloids, where pigment molecules like chlorophyll reside.
  • Later, in dark reactions, NADP and NADPH are used in the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules. These store energy in their bonds, which can be released in respiration in the mitochondria.

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’s cycle via the oxidization of pyruvate( through the process of glycoysis). The electron transport chain, in which oxygen functions as the terminal electron acceptor occurs in both plants and animals.

Learn more about photosynthesis at brainly.com/question/4216541

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3 years ago
Adrenaline stimulates glycogen breakdown in skeletal muscle cells by ultimately activating glycogen phosphorylase, the enzyme th
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Answer:

d) A constitutively active mutant form of PKA in skeletal muscle cells would lead to an excess in the amount of glycogen available.

Explanation:

This occurs in the process of Glycogenolysis. The process involves breaking down of glycogen to glucose  -1- phosphate and glycogen which helps in the release of glucose into the blood stream to prevent hypoglycemia(low blood sugar). The glucose-1-phosphate is later converted to glucose -6-phosphate. The latter enters the glycolytic pathway in which the reaction is catalysed by the enzyme phosphoglucomutase.

This homeostatic glucose regulation  is regulated by the protein kinase(PKA)/ cAMP pathway in the skeletal muscles, the liver and the pancreas.

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Answer:

Environmental sustainability

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