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ludmilkaskok [199]
3 years ago
7

Describe how proteins are made, packaged, and transported within the cell.

Biology
2 answers:
Oksana_A [137]3 years ago
6 0
Proteins are made from ribosomes  and the rough E.R has ribosomes attached to it modifyies and transports proteins
hope this was what u were looking for
RUDIKE [14]3 years ago
3 0
Proteins, in eukaryotic cells (plants, animals, fungi) are made during protein synthesis, in which a gene encoding a specific protein's amino acid sequence is first transcribed in the nucleus, from DNA into messenger RNA (mRNA), then the mRNA is translated into the amino acid sequence at a ribosome.
The ribosome may be free-floating in the cytoplasm, or attached to the rough endoplasmic reticulum (rE.R.), depending on where the protein will end up.
If synthesized at the rE.R. then the protein will be packaged into an E.R. vesicle, which buds off and travels to the Golgi apparatus, where it attaches and the protein is further modified at the Golgi. This may include further 3-dimensional folding, adding of other moieties such as sugars (to make glyco-proteins), etc.
After post-translational modifications are complete, the modified protein can then be exported in a Golgi vesicle, budding off to travel to, for example, for export via exocytosis out of the cell. This happens for protein hormone secretions, enzyme secretion, and many other protein destinies.
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What have the scientific studies identified as the major cause of acid rain in the united states?.
Vadim26 [7]

Burning of fossil fuels that release sulphur and nitrogen compounds into the air is identified as the major cause of acid rain in the united states.

<h3>What are the causes of acid rain?</h3>
  • Acid Rain is created when sulphate and nitrogen oxides from the atmosphere react with rainwater and fall as a result.
  • Sulphur and nitrogen particles that mix with the wet elements of rain are the main causes in the production of acid rain.
  • Due to air pollutants, notably the excessive levels of sulphur and nitrogen released by machinery and industrial operations, acid rain is made up of water droplets that are extremely acidic.
  • The emissions that are released from industries are man-made causes.
  • The natural causes, such as lightning strikes in the atmosphere that release nitrogen oxides and volcanic eruptions that release sulphur oxide.

The complete question is :

What have the scientific studies identified as the major cause of acid rain in the United States?

a )chemicals still in the atmosphere from the asteroid collision with the earth

b) excess solar radiation due to the depletion of the ozone layer

c) volcanic ash in the air

d) burning of fossil fuels that release sulphur and nitrogen compounds into the air

To learn more about acid rain , refer:

brainly.com/question/6700006

#SPJ4

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ch4aika [34]

<u>Answer:</u>

Mitochondria, the organelles involved in cellular respiration, can also generate chemicals called reactive oxygen species (ROSs). ROSs can damage mitochondria. Damaged mitochondria generate more ROSs than healthy mitochondria. This is an example of a positive feedback mechanism

The reactive oxygen species that are given out by the mitochondria during cellular respiration are the major cause of aging. Though this has a lot of negative effects but this also has a small amount of positive effects such as the start of angiogenesis or cell proliferation.

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B. Mutations cause a person's body cells to divide uncontrollably. There isn't a signal for cells to stop dividing, so this can cause cancer because cancer cells won't stop dividing without this signal. 
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Answer:

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Prokaryotes are groups of organisms characterized by the lack of a membrane-bound nucleus in their cell. Due to this, the genetic material (DNA) of prokaryotes are found naked i.e. not housed. The DNA of a prokaryote is arranged in a single coiled chromosome located in a region of the cell called NUCLEOID.

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