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Valentin [98]
4 years ago
13

Which is considered a single cell organism?

Biology
1 answer:
Katen [24]4 years ago
3 0

Answer:

Hi! The answer is C: Bacteria! <3

Bacteria is a single celled microbe or in other words organism!

Hope this helped, if I was wrong please let me know! :3

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A vacuole is the cell's _______________.
Sergeeva-Olga [200]

Answer:

Vacuole, in biology, a space within a cell that is empty of cytoplasm, lined with a membrane, and filled with fluid. Especially in protozoa , vacuoles are cytoplasmic organs (organelles), performing functions such as storage, ingestion, digestion, excretion, and expulsion of excess water.Explanation:

5 0
3 years ago
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Which organelle is labeled H?<br>cell membrane<br>cell wall<br>endoplasmic reticulum<br>nucleus​
Dafna11 [192]

Answer:

cell membrane

Explanation

It's the outer living boundary of animal cells. It's made of lipid and protein. Plasma Membrane is a mosaic of phospholipids, cholesterol, and proteins, the proteins in plasma membrane regulates the coming/going of substances into/out of the cell.

6 0
3 years ago
Which structure in this plant cell represents the site of ATP production from photosynthesis?
oksian1 [2.3K]

The plant cell referred to in the question is attached to this answer.

The structure in the plant cell that represent the sites of ATP production from photosynthesis is the CHLOROPLAST; THAT IS OPTION B.

The photosynthesis reaction is divided into two stages, which are the light reaction and the dark reaction. The light reaction takes place in during the day in the presence of sunlight and it is during this period that ATP molecules are formed in the stroma of the chloroplast. During the dark reaction, the ATP produced during the light reaction together with NADPH are used as source of energy and reducing power respectively to manufacture carbohydrate from carbon dioxide.

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6 0
3 years ago
Concentrations are elevated by hot, sunny days: 2. increases exposure of organisms to ultraviolet light: 3. caused by halocarbon
Pani-rosa [81]
1. Concentrations are elevated by hot sunny days: photochemical smog.
A photochemical smog is a type of smog that occurs when sunlight in the atmosphere reacts with chemicals produced by the combustion of fossil fuels. This smog consists a pollutant and it is very common in large and densely populated cities. In hot sunny days, the ultraviolet light from the sun is at high levels, therefore, the photochemical smog is elevated.

2. The correct answer is stratospheric ozone depletion.
The Earth's stratosphere (which is one of the atmosphere's layers) has a layer with high ozone concentration, called ozone layer. The ozone layer absorbs most of the ultraviolet radiation that the Earth receives from the Sun. The ozone depletion is a term referring to the phenomenon of the gradual thinning of the ozone layer.

3. The correct answer is again ozone depletion.
The thinning of the ozone layer (as described above) is mainly caused by chemicals produced by the industry and other human activities. These chemicals belong to the category of ozone-depleting substances (ODS) and include halocarbon refrigerants, solvents and propellants. They are released from the surface of the Earth and transferred through the wind up to the stratosphere. When in the stratosphere, they undergo photolysis and release their halogen atoms. This, in turn, causes the breakdown of ozone into oxygen.

4. Acid deposition forms from emissions of sulfur dioxide.
Acid deposition is a term referring to the phenomena of acid rain, acid fog and acid mist. It is an environmental problem caused by the pollutants and gases from fossil fuel combustion and other human activities. In particular, power stations, house fires, car exhausts and melting processes emit sulfur dioxide which reacts with water molecules in the atmosphere and converses into sulfuric acid. This reaction lowers the pH of the rain, fog and mist and causes problems to the organisms and the infrastructure on Earth's surface.

5. Montreal protocol aimed to reduce emissions that cause the ozone depletion.
Montreal protocol is a protocol of the Vienna convention for the protection of the ozone layer and constitutes an international treaty. It controls the production, emission and consumption of the substances responsible for the ozone depletion (ODSs) on a global level. The implementation of this protocol resulted in a slow recovery of the ozone layer.

6. The correct answer is photochemical smog.
As described in question 1, the photochemical smog constitutes a mixture of several air pollutants. It is a product of the chemical reaction between the sunlight, nitrogen oxides and volatile organic compounds. The photochemical smog is a mixture of over 100 different chemicals, including nitrogen oxides, peroxyacetyl nitrate, tropospheric ozone and aldehydes.

7. Acid deposition leaches plant nutrients from the soil.
Acid deposition can cause soil acidification, a term referring to the pH of the soil becoming acidic. It has been observed that plants in areas where acid deposition is more common, grow more slowly or are unable to grow and die. This happens because the acid deposition releases toxic substances in the soil, such as aluminium. In addition, it happens because acid deposition removes minerals and nutrients from the soil and kills some of the microorganisms necessary for the plants to grow.

8. The correct answer is photochemical smog.
A temperature inversion is the reversal of the normal behaviour of the temperature above the surface of the Earth, meaning that temperature does not decrease with height as it is supposed to. These inversion effects reduce the atmospheric mixing and, in turn, reduce the dispersal of pollutants in the atmosphere. Therefore, this causes an increase in the concentration of pollutants and an increase in the production of photochemical smog.

3 0
4 years ago
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What are the major types of mountains?
masha68 [24]

Answer:

<em><u>The answer is</u></em>: <u>Folded, fault block, volcanic.</u>

Explanation:

<u>The main types of mountains are</u>: Folded, fault block, volcanic and upwarped.

Folded mountains. These types of mountains tend to change constantly depending on their complexity, however they always conform to the basic type.

Volcanic mountains. It is about the mountains that come to form when a volcano erupts.

Domes. These mountains are created by domed strata, as a granitic intrusion is generated.

Mountains in block. These are large-scale structural failures. These inside are usually folded and tend to have failures.

Plateau mountains. These are created when there is activity in the deepest of the earth's crust. They are formed with the deep channels that the current water produces, where the rivers can cut any table regardless of their depth, thus producing high-rise mountains.

<em><u>The answer is</u></em>: <u>Folded, fault block, volcanic.</u>

8 0
3 years ago
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