When a cell eats, and the "food" joins with a lysosome prior to digestion, a is formed. when antibodies block all binding sites on a virus, has occurred. mhc, or major complex, proteins are responsible for displaying antigens to immune cells. the proteins secreted by b cells are called antibodies or . chemicals like bacterial toxins that poison cells are described as b

Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

What are the three types of counseling established by marine corps policy?