Matter is made up of motionless particles.
True
False

The statement 'matter is made up of motionless particles' is FALSE.

Matter can be defined as any substance that has a mass and occupies space by having volume. Particles in the matter are found in a continuous state of motion (i.e., they move continuously).The level of motion of the particles in matter depends on the temperature.

In conclusion, the statement 'matter is made up of motionless particles' is FALSE.

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answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.