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statuscvo [17]
3 years ago
13

This is the corresponding normal cellular gene to an oncogene that is responsible for normal cell growth and division.

Biology
2 answers:
UkoKoshka [18]3 years ago
5 0
PROTO-ONCOGENES are corresponding normal cellular genes to an oncogene that is responsible for normal cell growth and division.
An oncogene refers to a gene that is capable of causing cancer due to damage to the DNA molecule either by virus or other DNA damaging agents. A proto oncogene is the normal version of the gene while an oncogene is the abnormal version of the concerned gene.
Oduvanchick [21]3 years ago
3 0

<span>A gene that code for proteins and responsible for normal cell growth and division is called proto-oncogenes. Mutations in proto-oncogenes can lead to an increase in protein expression or produce too many copies of it and become oncogene that can contribute to cancer cells.  Furthermore, </span>proto-oncogenes<span> have many various roles in the cell. Some of them provide signals that lead to cell division and others regulate programmed cell death.</span>

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Which statement describes one feature of Rutherford’s model of the atom? The atom is mostly empty space. The atom cannot be divi
Dovator [93]

Answer: The atom is mostly empty space.

Explanation:

Before to Rutherford, the accepted model for the atom was Thomson's model:

The atoms were a positive sphere, with electrons occupying space in it".

This was called the "plum pudding model".

Then came Ernest Rutherford, and he created a model where the atoms are mostly empty space (void) with a positive charged nucleus (really compressed in the center), and the electrons were orbiting around it.

Then the correct option is that the atom is mostly empty space.

5 0
3 years ago
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Similarities between seemingly unrelated organisms can be explained by Darwin’s theory that organisms come from common ancestors
dlinn [17]
The answer would be true
4 0
2 years ago
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Which of the following is a function of a vacuole
Andrews [41]
Typically, a vacuole's job consists of isolating harmful materials, storing waste products, storing water in a plant cell, helping maintain the pressure within a cell, and exporting products out of the cell.
5 0
3 years ago
From a chemical view, how is an amino acid is being recognized by its specific aminoacyl tRNA synthetase?
hammer [34]

During translation, rRNA and tRNA read mRNA in 5´ to 3´ direction. According to the codons being readen, tRNA transfers the correct amino acids to build the polypeptide chain. A codon is a short sequence of three nucleotides that store the genetic information for the aminoacids´ assembly.

Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid through the action of the aminoacyl-tRNA synthase enzyme. The whole complex, amino acid + enzyme + tRNA is named aminoacyl-tRNA.        

Each tRNA is recognized by a specific aminoacyl-tRNA synthase enzyme. The enzyme is also capable of recognizing a specific amino acid. Let us say, for instance, that <em>tRNA is specific for phenylalanine.</em> The molecule is attached to the <em>enzyme that is specific for that tRNA(Phe)</em>. Then, when the enzyme and tRNA(Phe) are together, they get to <em>find phenylalanine</em>. The <em>enzyme links the aminoacid to the RNA</em>. Once the whole complex is formed, the <em>tRNA gets to pair its anticodon with the mRNA codon</em>. This is,

  1. Recognition of enzyme and the specific tRNA(aa) ⇒ aa being aminoacid
  2. Recognition of enzyme and the specific aminoacid
  3. Linkage of the aminoacid to RNA by the enzyme action
  4. Pairing of tRNA anticodon to mRNA codon.

Considering that there are twenty amino acids available, there are also twenty complexes of aminoacyl-tRNA, one for each amino acid. Each of the mRNA codons represents one of the 20 amino acids used to build the protein. Each amino acid can be codified by more than one codon. Of the total 64 codons, 61 codify amino acids, and one is a start codon. The left three codons are stopping translation points.

tRNA decodes genetic information from the nucleotidic sequence in the mRNA molecule and allows amino acids to align composing the new protein.  

Once the new peptidic link joins, placing together the new amino acid to the growing peptidic chain, the binding between the amino acid and the tRNA molecule breaks. The tRNA is now free to join another amino acid and repeat the cycle.

In conclusion, a specific aminoacyl-tRNA synthase enzyme recognizes a tRNA, which is also specific for a certain amino acid. When together, the enzyme recognizes the amino acid and links it to the RNA. The whole complex is known as aminoacyl-tRNA. Once the tRNA is joined to its amino acid, it gets to pair a codon of mRNA to add that amino acid to the new synthesizing protein.

6 0
2 years ago
Water is essential for life on Earth. Which property of water is the primary reason water is able to transport substances to and
alexgriva [62]
I'm not sure if there are answer choices, but water is an excellent solvent, taking along valuable nutrients with it when it travels.
7 0
2 years ago
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