The virus known as Epstein-Barr virus primarily infects lymphocytes
<h3>What are Epstein-Barr viruses</h3>
Epstein- Barr viruses are viruses that causes mononucleosis. They are from the family Human gammaherpesvirus 4.
These viruses preferentially infects the human B- lymphocytes and may also infect the epithelial cells of the body.
Therefore, the virus known as Epstein-Barr virus primarily infects lymphocytes.
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Answer:
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3. d. a key is to lock
Explanation:
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Answer:
Chromosomal Mutation
Explanation:
The development and function of an organism is in large part controlled by genes. Mutations can lead to changes in the structure of an encoded protein or to a decrease or complete loss in its expression. Because a change in the DNA sequence affects all copies of the encoded protein, mutations can be particularly damaging to a cell or organism. In contrast, any alterations in the sequences of RNA or protein molecules that occur during their synthesis are less serious because many copies of each RNA and protein are synthesized.
Geneticists often distinguish between the genotype and phenotype of an organism. Strictly speaking, the entire set of genes carried by an individual is its genotype, whereas the function and physical appearance of an individual is referred to as its phenotype. However, the two terms commonly are used in a more restricted sense: genotype usually denotes whether an individual carries mutations in a single gene (or a small number of genes), and phenotype denotes the physical and functional consequences of that genotype.
The cell membrane is very important to the cell structure. It helps hold everything within the cell and serves as a protective covering as well.
In eukaryotic cells the DNA can be found in the nucleus mainly. so DNA replication takes place in the nucleus during the S phase of the cell cycle.
Also in eukaryotic cells there are mitochondria and chloroplasts (plants) and these have circular DNA and they also get replicated (according to their own mechanism).
Prokaryotic cells don't contain a nucleus. They do not contain DNA in the cytoplasm and thus the DNA replication will take place here.
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