CELLS AND TISSUES (DISCONTINUED) Flashcards
1
Q
The human body has ____ to ____ cells
A
50 - 100 trillion cells
2
Q
_____ are masses of similar cells (and their extracellular matrix) that combine with other _____ to form membranes or organs.
A
tissues
3
Q
How many types of tissues are there in humans?
A
four basic tissue types
4
Q
The structural unit of all living things
A
cells
5
Q
The activity of an organism depends on the ___________.
A
collective activities of its cells
6
Q
According to the ___________, the biochemical activities of cells are dictated by the relative number of their specific subcellular structures.
A
principle of complementarity
7
Q
the three main regions of the cell
A
nucleus
cytoplasm
plasma membrane
8
Q
A
