Answer:
Sperm cells are not normally exposed to blood, but if they are, the immune system may produce __<u>auto-antibodies</u>__ against sperm cells' __<u>auto-antigens</u>_ and render someone sterile.
Explanation:
Auto-antibodies are antibodies that can destroy cells from the same organism. They are mistakenly directed against organs or tissues of the same organisms, causing auto-immune diseases or affections. The autoantibodies action occurs when the organism fails in recognizing its own cells and faces them as strange elements.
Auto-antigen is the molecule produces by the body that fails in being recognized due to a break up in the tolerance mechanisms, triggering an immune response.
In the exposed example, sperm cells do not usually mix with blood. So when they do, blood cells recognize them as strange bodies and act against them. Sterility might be an effect of this auto-immune response.
Moss and grasses
category of plants will probably form the climax community
Explanation:
Krakatoa is a small volcanic island which is in Indonesia. It is about 100 miles west of Jakarta. It is found in the Sunda Strait. It is between the island of java and Sumatra.
Krakatoa was made up of three peak which is known as Perboewatan, Rakata and Danan. Around 36000 people were killed in 1983 due to volcanic eruption. It is known most devastating volcanic history eruption in human history
Answer:
Because Without Earthquake Research Earth Will Be DESTROYED
Answer:
The enzyme denatured and therefore cannot catalyse any more reactions. Once an enzyme is denatured, it cannot be reversed.
Answer:
Birthdate vs death rate
Explanation:
Birthdate is the day someone was born. Death rate is the amount of people that died in a period of time