Answer No 1:
A concentration gradient can be described as a phenomenon by which molecules travels from an area which is highly concentrated to an area which has low concentrations of that molecule.
Answer No 2:
A molecule is said to be diffusing down a concentration gradient when molecule acquire the phenomenon of concentration gradient i.e move from higher concentration to lower concentration. This mechanism is also termed as passive transport. Active transport is the opposite of passive transport. In active transport, molecules move against the concentration gradient i.e from an area of lower concentration to an area of higher concentration.
<u>Amantadine </u> like its relatives zanamivir and oseltamivir, blocks the entry of influenza virus by blocking fusion of the virus with the host cell membrane.
What exactly does amantadine mean?
A medication used to treat influenza A virus infections. It prevents the virus from infecting cells and producing more virus particles. It is also used to treat Parkinson's disease symptoms. Amantidine hydrochloride is an antiviral medication.
What are the effects of amantadine?
When you get up too quickly from a lying position, amantadine can cause dizziness, lightheadedness, and fainting. This is more common when you first begin taking amantadine or when your dose is increased.
Learn more about Amantadine to visit this link
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The correct answer is "plasma cells".
Plasma cells are differentiated or mature B cells capable of producing antibodies against a particular foreign substance. B cells are stimulated to differentiate into plasma cells when it binds to two receptors of helper T cell; having the T cells "help" the B cells to differentiate to plasma cells. These T cells have the antigenic information passed to them by antigen presenting cells such as dendritic cells and these will be passed to the B cells and plasma cells will produce antibodies against this specific antigen.
I think it's 90% but I am not sure.
<span>d. sporangia.
is a structure that can be found in unicellular and multicellular organisms that encloses spores. Organisms that form sporangia in their life cycles are plants, fungi and algae among others.</span>
