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Zina [86]
3 years ago
9

What are the reason that make our planet earth habitable

Biology
2 answers:
Anna11 [10]3 years ago
8 0

It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.

MAXImum [283]3 years ago
7 0

Answer:

livable temperature, water, food sources, oxygen

Explanation:

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The circulatory system is in charge of pumping blood and nutrients throughout the body.
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The image below shows plant cells.
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c.

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The image shown in the question shows that organisms are made up of large number of cells. Living organisms constitute different types of cells.

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Describe the steps of Transcription, and describe the steps of Translation
goldfiish [28.3K]

Answer:

The various steps in the transcription and translation process of protein synthesis are described below.

Explanation:

Proteins (made up of amino acids) have an important role in the various functioning process of an organism. Protein synthesis which takes place in the cells of an organism consists of two major processes: transcription (DNA to RNA) and translation (RNA to protein).

Transcription: It is the first process in protein synthesis which occurs in the cell nucleus where a single-stranded messenger RNA (mRNA) is created using a DNA strand and the genetic instructions in DNA are transferred to this mRNA. The steps in transcription are initiation, elongation, and termination. The beginning process known as initiation occurs when an enzyme RNA polymerase binds to a promoter (region of a gene) and the DNA unwinds. One of the DNA strands acts as a template and the enzyme reads the bases in the template DNA strand.

The next step is elongation, where the RNA polymerase builds a strand of mRNA by the addition of nucleotides using complementary base pairs. Here, adenine (A) in the DNA binds to uracil (U) in the RNA. Termination is the last step in which the transcription process ends when the RNA polymerase comes across a termination sequence in the gene. Thus, the completed single-stranded mRNA detaches from DNA.  

Translation: It is the second process in protein synthesis which occurs in the ribosome of the cell where the genetic information in mRNA is used to create a protein from amino acids. A triplet of nucleotides is called a codon and they define amino acids. There are 64 possible codons and the codon, AUG acts as the start codon which initiates translation in addition to specifying the amino acid methionine. In the initiation step, the first amino acid in the polypeptide chain is brought by transfer RNAs (tRNAs) to bind to the start codon of mRNA. During elongation, each type of tRNAs in the cytoplasm bound to a specific codon on the mRNA template and adds the corresponding amino acid to the polypeptide chain. Stop codons (UAA, UAG, or UGA) terminate protein synthesis and release the polypeptide.

8 0
3 years ago
How many phosphate minerals most affected human activity
goldenfox [79]

Answer:

How much phosphorus does the human body have?

How much phosphorus do I need?

Life Stage Recommended Amount

Children 9 to 13 years old 1,250 mg

Adolescents 14 to 18 years old 1,250 mg

Pregnant and lactating adolescents 1,250 mg

Adults over 19 years of age 700 mg

Explanation:

3 0
3 years ago
This illustration shows the process of making a protein molecule. The site of protein synthesis in a cell is the ______________
Elena-2011 [213]

Protein is assembled inside cells by an organelle called a ribosome. Ribosomes are found in every major cell type and are the site of protein synthesis.


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