diff --git a/Grade 10/Science/SNC2DZ/Unit 2: Biology.md b/Grade 10/Science/SNC2DZ/Unit 2: Biology.md index 4c949ed..7adfab8 100644 --- a/Grade 10/Science/SNC2DZ/Unit 2: Biology.md +++ b/Grade 10/Science/SNC2DZ/Unit 2: Biology.md @@ -1,7 +1,4 @@ -# Unit 2 Biology -- Tissues -- Organs -- Systems of living things +# Unit 2: Biology ## Cellular Biology A person contains roughly 100 trillion cells @@ -17,21 +14,22 @@ A person contains roughly 100 trillion cells `Eukaryotic cell`: Means complete nucleus -|Part Of Cell|Prokaryotic|Eukaryotic| +|Factors|Prokaryotic|Eukaryotic| |:-----------|:----------|:---------| -|DNA|In nuclear region|Usually in membrane, bound nucleus| +|DNA|In nucleoid region|Usually in membrane-bound nucleus| |Size|Usually smaller|Usually larger| |Organelles|Not membrane-bound, smaller|Membrane-bound, more complex| -|Organization|Usually singlecelled|Often multicelled| -|Metabolism|May not need oxygen|Usually needs oxygen| +|Organization|Usually singlecelled|Often form multicellular organisms| +|Metabolism|May not need oxygen|Usually need oxygen| ## Cellular Organelles ### Cell Membrane - - Controls what substances enter/leave the cell selectively + - Controls what substances enter/leave the cell selectively via various receptors/osmosis - Allows nutrients to enter - Allows waste products to leave - Surrounds and holds other organelles in cell + - Interact with outside chemicals (e.g., hormones) ### Nucleus - Holds deoxyribonucleic acid (DNA) in form of chromatin