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.
Answer:
27.33 days, or february 1st
Explanation:
the moon takes 27.33 days to rotate around earth
Biologists study the structure, function, growth, origin, evolution and distribution of living organisms.
Answer:Hydrodynamic efficiency!
Explanation:
A human red blood cell in an artery of the left arm is on its way to deliver oxygen to a cell in the thumb. To travel from the artery to the thumb and then back to the left ventricle, this red blood cell must pass through two capillary beds.
Capillary bed is a network of capillaries present in our human body which formed by the true capillaries and vascular shunts.
Capillary beds allows the exchange of the water, oxygen and other things present in the tissues.
Capillary beds are often located to metabolic organs, such as the lungs, kidneys, or brain, to exchange vital materials and rid waste.
As the human red blood cell travels from the artery of left arm to thumb, it passes through one capillary bed as it has to supply oxygen to a cell in thumb.
It moves through the vein back to the left ventricle, it again pass through another capillary bed.
Thus, the red blood cells pass through two capillary beds.
To know more about the Blood, refer to this link:
brainly.com/question/13585990
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