The portions of an antigen that are recognized by an antibody are the:

What is the name of the two satelites on mars

Which of the following is an example of competition that could be found in a forest? question 14 options: deer eat berries and their droppings seed new areas creating more berry bushes two fox populations utilize the same rabbit population as their main food source two hawk populations utilize the same scorpion population as their main food source lack of sunlight due to changes in the seasons restricts the growth of certain plants

How can you tell the difference between rough er from smooth er?