Virulence factors of virus aids in its ability to infect cells.
Explanation:
Virulence factors help pathogenic microbes to infect host cells by virulence mechanisms – invade host, cause and spread disease, evade the defense or immune mechanism of the host. These factors makes the virus to grow, replicate, and modify the host cells due to its toxicity.
Viruses binds to the receptor protein of the host cell.
Different types of virulent factors are: invasion factors, adhesive or adherent factors, capsules, endo and exotoxins, etc.
The virulence factors decides the severity and rate of spread of an infection
Answer:
- Label A - G1 phase
- Label B - S phase
- Label C
- G2 phase
- Label D - Mitosis
- Label E - interphase
Explanation:
Label A - G1 phase (First gap phase): during this phase, cell grows, forms more protein, RNA and copies cell organelles.
Label B- S phase (Synthesis phase): during this phase, synthesis of DNA and its replication occurs.
Label C- G2 phase (Second Gap phase): during this phase the cell grows more, makes protein and cell organelles.
Label D – Mitosis: during mitosis the cell divides its nucleus and cytoplasm to produce two daughter cells.
Label E- Interphase : A stage of cell growth and metabolic activity. The G1,S and G2 phases together called interphase.
Answer: Genetic engineering is manipulating or modication an organisms' dna or cells.
Cloning is a great example of genetic engineering.
Explanation: it is important because it is use to produce medicine such as Insulin and other vaccines for dfferent diseases.
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Base substitutions, deletions, and insertions are the three different forms of DNA mutations.
A mutation is a long-lasting alteration to the DNA's nucleotide sequence that can occur during replication and/or recombination. Damaged DNA can change by base pair replacement, deletion, or insertion. The majority of the time, mutations are benign, unless they result in tumor growth or cell death. Cells have developed systems for repairing damaged DNA due to the deadly potential of DNA mutations.
Different Mutations
Base substitutions, deletions, and insertions are the three different forms of DNA mutations.
1. Base Replacements
Point mutations are single nucleotide replacements; you may recall the point mutation Glu ——-> Val is the culprit of sickle cell anemia. There are two types of point mutations, the most prevalent of which are.
Transition and Transversion.
Learn more about Base substitutions using this link:
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A plant cell has chloroplasts.
An animal cells doesn't.
