The overall function of the digestive system as digestion and absorption of food stuffs, and the general activities of each digestive system organ is; Ingest, digest, absorb, defecate.
Ingestion involves placing food into the mouth, propulsion involves propelling food from one organ to the next using peristalsis. Mechanical digestion involves the physical fragmenting food into smaller particles. Chemical digestion refers to breaking down food molecules to building blocks by enzymes. Absorption is the transport of digested end products to blood or lymph; and finally Defecation which involves the elimination of indigestable material from GI tract by anus.
U·ni·cel·lu·laradjective
BIOLOGY(of protozoans, certain algae and spores, etc.) consisting of a single cell.(of an evolutionary or developmental stage) characterized by the formation or presence of a single cell or cells.
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Answer:
that's very broad, is that the whole question?
Answer:
C. Traits present in the last common ancestor of a certain group of species under consideration.
Explanation:
Ancestral character traits are the one that is present in the last common ancestor and all of its descendant groups. For example, the presence of the vertebral column is an ancestral trait for all the vertebrate groups such as birds and mammals as it was present in their last common ancestor and is also shared by them.
When antibodies bind antigens, the clumping of antigens results from the antibody having at least two binding regions.
What's the function of the antibody-antigen complex?
Antibodies serve two primary functions: selective binding to antigens to initiate an immune response and activation of other immune system components to combat infections.
- Immunoglobulins' capacity to combat a wide range of diseases is based on their inherent ability to distinguish between distinct antigens.
- Because of their antigen specificity and affinity, antibodies have shown to be a significant and important tool in research, diagnosis, and treatment.
- Although it appears to be a straightforward move, the connection of an antibody and its antigen to form an antigen-antibody complex is made up of a plethora of non-covalent interactions.
Hence, the correct answer is option A
Learn more about antibodies here,
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