the cell theory

Question 1

state the cell theory

Answer 1

it states that all organisms are composed of similar basic units of organizations called cells
it was articulated by Theodor Schwann and Matthias Schleiden in 1839

Question 2

modern interpretations of cell theory

Answer 2

1. all known living things are made up of one or more cells
2. all cells arise from pre existing cells through cell divisions
3. cell is the fundamental unit and structure in all living beings
4. activity of an organism depends on total activity of independent cells
5. energy flows within the cell
6. cell contains DNA that is passed from one cell to another during cell division
7. all cells are basically the same in chemical composition in organisms of similar species

Question 3

explain mitosis

Answer 3

genetic complement of daughter cell is identical to mother cell (asexual)

Question 4

explain meosis

Answer 4

genetic complement of daughter cell is half of mother cell and it is genetically unique (sexual)

Question 5

define anabolism

Answer 5

simple organic molecules to complex molecules

Question 6

define catabolism

Answer 6

complex molecules breakdown to release energy

Question 7

define metabolism

Answer 7

sum of all reactions performed by cells