Answer:
Its either A or B
explanation:
pls give brainlyest
Answer:
Bacteriophages are attaching to bacterial cell wall and injecting genetic material.
Explanation:
Bacteriophage:
A bacteriophage (bacteria eater) is a type of virus that infects bacteria. Bacteriophages are composed of genetic material (DNA or RNA) enclosed in a protein shell or capsid.
Following are steps of bacteriophage infection:
- Bacteriophage attaches to cell surface receptors on the surface of the bacterium.
- Depending upon the type of phage, the bacteriophage either injects its DNA or RNA into the bacterium or enters as a whole. In this image, the bacteriophage T4 is represented which injects its genetic material into the host cell.
- The phage's genetic material hijacks the cellular machinery of the host and replicates itself within the host.
- After replication, the phages burst open the bacteria cell and are released. This is called the lytic cycle of bacteriophage infection.
- In another type of infection cycle, called the lysogenic cycle, the bacteriophage genome gets incorporated into the host genome, known as a prophage. This prophage lies dormant.
* The second step of the infection cycle is pictured here.
Hemostasis is a process which would cause for bleeding to halt and is the first step in healing wounds. During hemostasis, the process that happens first would be vascular spasm. The damaged vessels are constricted which would result to reducing the amount of the blood flowing in the area thus limiting blood loss. This action is stimulated by factors like direct injury to a smooth muscle. This would allow chemicals to be released by the platelets and the endothelial cells. This response would be more effective as the damage is being increased. Also, it occurs more effectively in areas where there are smaller blood vessels.
Answer: Facilitated diffusion. Some molecules, such as carbon dioxide and oxygen, can diffuse across the plasma membrane directly, but others need help to cross its hydrophobic core. In facilitated diffusion, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers.
Explanation:
