Question

Groups of different types of tissues working together are referred to as __________.
organs
organ systems
organisms
populations

Answer 1

organs

Answer 2

a

Answer 3

Which of these shows the levels of organization in the correct order from smallest to largest?
cells, tissues, organisms, and organs
cells, organs, tissues, and organisms
cells, tissues, organs, and organ systems
tissues, organs, cells, and organ systems

Answer 4

cells, tissues, organs, and organ systems

Answer 5

Which of these is not a part of the immune system?
bone marrow
spleen
heart
thymus

Answer 6

i think heart