Block 1 Lecture 1 Flashcards
1
Q
approximately how many cells do humans have
A
3.7 x 10^13
2
Q
how many different cell types are there
A
200
3
Q
why do cells naturally gain water and swell
A
because cytoplasm contains molecules such as negatively charged proteins that can’t exit
4
Q
how is the tendency to swell diminished
A
by making it impossible for sodium to enter by the effect of a pump and the lack of sodium channels
5
Q
what are the levels of structural organization
A
chemical > cellular > tissue > organs > system level > organismic level
