diff --git a/Grade 10/Science/SNC2DZ/Unit 2: Biology.md b/Grade 10/Science/SNC2DZ/Unit 2: Biology.md
index 970602e..dc585f2 100644
--- a/Grade 10/Science/SNC2DZ/Unit 2: Biology.md	
+++ b/Grade 10/Science/SNC2DZ/Unit 2: Biology.md	
@@ -4,24 +4,23 @@
 - Systems of living things
 
 ## Celular Biology
-A person contains roughly 100 billion cells
-- there are roughly to different types of cell s found in mammals
-- cells are roughly 20 $`\um`$ (micrometer, $`10^{-6}`$ m), around 250 cells / cm
+A person contains roughly 100 tillion cells
+- Cells are roughly 20 $`\um`$ (micrometer, $`10^{-6}`$ m), around 250 cells / cm
 
 ## Cell Theory
 1. All living things are composed of cells 
-2. cells are the basic units of living organisms
-3. all cells came from pre-existing cells
+2. Cells are the basic units of living organisms
+3. All cells came from pre-existing cells
 
 ## Types Of Cells
-`Prokaryotic cell`: Meaning before/lacking
+`Prokaryotic cell`: Meaning before/lacking nucleus
 
-`Eukaryotic cell`: Has organelles, meaning true, complete.
+`Eukaryotic cell`: Means complete nucleus
 
 |Part Of Cell|Prokaryotic|Eukaryotic|
 |:-----------|:----------|:---------|
-|DNA|In nucleoid region|Usually in membrane, bound nucleus|
+|DNA|In nuclear region|Usually in membrane, bound nucleus|
 |Size|Usually smaller|Usually larger|
-|Organelles|No membrane, bound organelles|Membrane, bound organelle, the bigger, the more complex|
-|Organization|Usually singler celled|Often multicellular|
-|Metabolism|May not need oxygen|Usually needs oxygen to exist|
\ No newline at end of file
+|Organelles|Not membrane-bound, smaller|Membrane-bound, more complex|
+|Organization|Usually single-celled|Often multicelled|
+|Metabolism|May not need oxygen|Usually needs oxygen to exist|