Antibodies have a variable region that binds to a specific antigenic determinant.
Antibody
An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses. The antibody recognizes a unique molecule of the pathogen, called an antigen. Each tip of the "Y" of an antibody contains a paratope (analogous to a lock) that is specific for one particular epitope (analogous to a key) on an antigen, allowing these two structures to bind together with precision. Using this binding mechanism, an antibody can tag a microbe or an infected cell for attack by other parts of the immune system or can neutralize it directly (for example, by blocking a part of a virus that is essential for its invasion).
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Answer:
Renal autoregulation.
Explanation:
Kidneys are the important organ that are involved in the process of excretion, maintains the body pH and regulates the level of salt in the body.
Renal autoregulation may be defined as ability of the kidney to maintain the constant glomerular filtration rate withou change in the blood pressure. No nervous or hormones are involved the renal autoregulation.
Thus, the answer is renal auto regulation.
Hypothesis could be tested by actually doing them to see if it works or not...
Answer:
1.9mL to 8.7mL (Answer A)
