Interferon are small proteins (cytokines) that enhance the immune system and defense against viruses and bacterial infections.
Interferon stimulates the infected cells and those nearby to produce proteins. These proteins prevent the virus from replicating within them. Further production of the virus is inhibited<span> and the infection is stemmed.
</span>There are three types of interferon: gamma, alpha and beta. Alpha and beta can be produced from any cell, and gamma is<span> produced only by natural killer cells and T lymphocytes. The main purpose of gamma interferon is to signal the immune system to respond to infectious agents or cancerous growth.</span>
Answer and Explanation:
During the body's metabolism, molecules are generated that are residues of chemical and methanbological reactions. These molecules need to be removed from the body and this process is done by the excretory system. Most of these molecules are wastewater and nitrogen compounds.
The kidneys are a very important point in this system, along with the urinary system. When blood, rich in oxygen, comes in contact with the kidneys, they are filtered by this organ. This is done through structures called the nephron which are the excretory unit of the kidneys. Within each nephron there is a collecting capsule where water and residual particles that are in the blood are captured, while the rest of the particles pass along with the blood and continue on their way to other regions of the body.
From inside the kidneys there is also a tube called the ureters, which captures the water and molecules captured by the nephron (which forms the urine) and takes them to the bladder, which directs the urine out of the body through the urethra.
Answer:
True
Explanation:
The arteries deliver the oxygen-rich blood to the capillaries, where the actual exchange of oxygen and carbon dioxide occurs. The capillaries then deliver the waste-rich blood to the veins for transport back to the lungs and heart. Veins carry the blood back to the heart.
1,3,4,6..........those are your answers
well no, as long as its your own child, if its some other child that you see on the street then yes, but if its like i said your own or for instance your helping in a sunday school class,
