Answer to Question #58962 in Cell Biology for tracy guido

Question

The study of biology can be understood through the organizational hierarchy of life. Each level of life builds upon the next level, and this increasing complexity is what leads from molecules up to an entire ecosystem. How is the tissue level different from the other levels of life?
A tissue is an individual living thing, such as a bacterium, fungus, protist, plant, or animal.
A tissue is a group of similar cells that work together to perform a function.
A tissue is a group of multiple organs that work together to perform vital functions for the organism.
A tissue is a collection of molecules and reactions that form the basic unit of all living things.

What is the function of Hox genes during development?
maintain pluripotency in embryonic stem cells
promote cleavage in the early embryo
encode enzymes that provide cellular energy for the developing embryo
direct the formation of the appropriate structure at a given location in the embryo

Answer 1

1) A tissue is a group of similar cells that work together to perform a function.
2) Hox genes direct the formation of the appropriate structure at a given location in the embryo.