diff --git a/Grade 10/Science/SNC2DZ/Unit 2: Biology.md b/Grade 10/Science/SNC2DZ/Unit 2: Biology.md
index 7adfab8..cda9793 100644
--- a/Grade 10/Science/SNC2DZ/Unit 2: Biology.md	
+++ b/Grade 10/Science/SNC2DZ/Unit 2: Biology.md	
@@ -43,7 +43,12 @@ A person contains roughly 100 trillion cells
 
 ### Nucleolus
  - Dense region of DNA located in the nucleus
- - This area of DNA is specially for ribosomal DNA (rDNA)
- - Produce "large" and "small" units of complete ribosomes, which either remain free or mix with endoplasmic reticulum, forming rough endoplasmic reticulum (RER)
+ - This area of DNA is specially for ribosomal DNA (rDNA), or DNA used to make ribosomes
+ - Produce "large" and "small" subunits of ribosomes, which either form complete ribosomes in cytosol or mix with endoplasmic reticulum, forming rough endoplasmic reticulum (RER)
  - Is *not* surrounded by a membrane, literally is just same as rest of nucleus but denser
 
+
+### Cytoplasm & Cytosol
+ - Cytosol is the fluid cells contain
+ - All organelles are suspended in cytosol
+ - Cytoplasm is the cytosol along with everything in a cell, excluding the nucleus
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