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Dmitry_Shevchenko [17]
3 years ago
8

Retroviruses, such as human immunodeficiency virus, rely on reverse transcriptase to multiply inside a cell. However, HIV also r

equires host ribosomes to build new viral particles. Based on your knowledge of the central dogma, order the flow of genetic information from left-to-right, from the first step (left) to the last step (right), for retroviruses.
Biology
1 answer:
Serga [27]3 years ago
7 0

Answer:

DNA ⇄ RNA → PROTEINS.

Explanation:

Central dogma explains the flow of genetic information of the living organism. The DNA is converted to RNA by transcription and further into protein product by the process of translation. DNA can increase its number by replication process.

Retroviruses do not follow the central dogma and they have the ability to convert the RNA into the DNA molecule by the enzyme reverse transcriptase. Their central dogma is as follows:

DNA ⇄ RNA → PROTEINS.

Thus, the answer is DNA ⇄ RNA → PROTEINS.

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Will give brainliest!! Make a claim for how the cell cycle relates to the growth and maintenance of organisms. Discuss the stage
Aloiza [94]

Answer:

In unicellular organisms, cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance. Survival of the eukaryotes depends upon interactions between many cell types, and it is essential that a balanced distribution of types be maintained. This is achieved by the highly regulated process of cell proliferation. The growth and division of different cell populations are regulated in different ways, but the basic mechanisms are similar throughout multicellular organisms.

Explanation:

3 0
2 years ago
Cite the three main types of RNA and describe briefly the function of each.
sveticcg [70]

Answer:

mRNA: Carry genetic information from DNA to protein; serve as template for protein synthesis.

tRNA: Serves as adapter molecule and deliver specific amino acid from the cell pool to the mRNA-ribosome complex.

rRNA: Structural component of ribosomes.

Explanation:

There are three types of nongenetic RNAs: mRNA, tRNA, and rRNA.  

1. The messenger RNA (mRNA) is formed by the process of transcription in the nucleus. Transcription uses template strand of DNA to specify the nucleotide sequence in mRNA. The mRNA enters cytoplasm to join ribosomes. The nucleotide sequence of mRNA serves as a template and specifies the amino acid sequence of proteins.  

2. The transfer RNA (tRNA) serves as an adapter molecule during the process of protein synthesis and binds to the specific amino acids to deliver them to the protein-synthesizing machinery. The anticodon of tRNA binds to the complementary mRNA codons.  

3. The ribosomal RNA (rRNA) serves as structural components for ribosomes. Each of the subunits of ribosomes is made up of rRNA and proteins.  

8 0
3 years ago
Question 2(Multiple Choice Worth 2 points) (02.04 MC)El Niño events are characterized by warmer than normal ocean temperatures n
nasty-shy [4]
The appropriate answer is a. Increased rainfall across the eastern Pacific Ocean. Scientists are still not sure what causes El Nino events but it does disrupt weather patterns all across the globe. One of the effects include increased rainfall along the eastern Pacific in countries such as Peru and Chile. These regions do not normally receive heavy rainfall. 
8 0
3 years ago
The rabies virus is 12 kb in length. Based on the coating ratio of nucleoprotein (n), what would be the total number of nucleopr
Molodets [167]

Rabies virus nucleoprotein encapsidates the genomic and antigenomic RNA of RV to form the viral ribonucleoprotein complesx. Rabies virus is nonsegmented negative strand RNA virus within the Rhabdoviridae family.

It is zoonotic , aftal and progressive neurological infection caused by rabies virus of genus lyssavirus and family rhabdoviridae.Its genome is 12 kb in length and encodes 5 monocistronic mRNAs encoding the nucleocapsid  protein, matrix, phosphoprotein, the trans-membrane, glycoprotein and viral RNA depent RNA polymerase.

Rabies virus vaccine vector tolerate large , multiple foreign genes , upt to 6.5 kb and live rabies virus vector with very low pathogenic potential can be constructed. It contains foreign glycoproteins such as hepatitis E2 or HIV .

To learn more about the Rabies virus here

brainly.com/question/28136082

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4 0
2 years ago
If antibodies to fibronectin are exposed to an embryo through which neural crest cells are migrating
lidiya [134]

Answer:

Neural crest cell movements are inhibited.

Explanation:

Neural crest cells may be defined as the temporary group of cells that are unique for the chordata group. These cells arise from the embryonic ectoderm and give rise to future melanocytes.

Antibodies to fibronectin association is helpful to study the signalling factors. If these anitodies to fibronectin is shown in the embryonical stage. The neural crest migration is inhibited by its exposure to fibronectin and this might hinder the embryonic development.

Thus, the answer is neural crest cell movements are inhibited.

3 0
3 years ago
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