2026-09-11 20:34:48: Viruses

biology/G11 Pre-AP Biology/Viruses.md

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+[[G11 Pre-AP Biology]]
+
+* Non-living
+	* Not capable of surviving on its own
+	* Acellular (Not made of cells)
+	* No cytoplasm, ribosomes, or membrane bound organelles.
+	* Doesn't produce energy.
+* Essentially structures with genetic material (nucleic acid) and protein coating
+* Shapes:
+![[Pasted image 20260911203414.png|336]]
+* Bacteriophages are complex viruses which attach to bacteria.
+* Replicates doesn't reproduce
+* Instructs host cell to make copies of virus DNA
+# Lytic and Lysogenic Cycles
+* Lytic:
+	* Cycle:
+		* Virus attaches to host cell (either enters or inserts)
+		* Tricks host cell to making copies of viral DNA/viral parts
+		* Host cell assembles new viruses
+		* Host cell releases new virus (some hosts will lysis)
+	* Make viruses and then releases them
+	* Takes pieces of membrane with it
+![[Pasted image 20260911112321.png|371]]
+# Classification
+* Size and shape
+* Type of nucleic acid
+* Presence/absence of outer envelope
+
+# Diagram
+* Tail fiber shapes allow bacteriophages to infect different types of bacteria.
+* Protein spike shapes allow it to enter different cells.
+* Capsid
+	* Protective coating
+* Nucleic Acid
+	* DNA or RNA
+* Protein Spikes/Glycoprotein
+	* Allows them to attach and enter different cells
+![[Pasted image 20260911111837.png]]