Natalie M. Alexander
On-level Biology, Advanced (Pre-AP) Biology, Medical Microbiology
9th-12th graders
Contact me

Hello! My name is Natalie Alexander and I'm excited to teach your student at Seguin High School. I started teaching in the Seguin ISD in 2005, and at Seguin High School in 2013. I graduated from the University of Texas at Austin with a Bachelor's degree in Biology, and Texas State University in San Marcos with a Master of Education and Teacher Certification. The classes I will be teaching this year are On-level Biology, Advanced (Pre-AP) Biology and Medical Microbiology.

The best way to reach me is by email. My email address is, or you may leave a message by telephone at 830-401-8000. My conference time is 6th period (from 2:22pm to 3:11pm), and my tutorials are Wednesday and Thursday after school from 4:10 pm to 4:40 pm.

My daily teaching schedule is:

1st Period Advanced Biology

2nd Period Advanced Biology

3rd Period Advanced Biology

4th Period On-level Biology

5th Period Medical Microbiology

6th Period Planning/Conference

7th Period On-level Biology


Check Google Classroom to access the following documents:

On-level Biology Syllabus

Advanced (Pre-AP) Biology Syllabus

Medical Microbiology Syllabus

The Year at a Glance for Biology is:

First six weeks: Science Safety, Comparing Structures of Cells and Viruses; Homeostasis, the Cell Membrane and Cell Transport

Second six weeks:  Photosynthesis and Cellular Respiration; the Cell Cycle including Mitosis and Cancer

Third six weeks: Enzymes; Protein Synthesis, Review Functions of 4 Biomolecules; Meiosis, Genetics and Heredity

Fourth six weeks: Evolutionary Mechanisms including Natural Selection; Classification; Viruses, Bacteria, Fungi and Protista

Fifth six weeks: Plant Systems, Animal Systems, Ecology

Sixth six weeks: STAAR/End-of-Course Exams (EOCs), Research and Experimental Design


Major Units of Study for Medical Microbiology are:

 Knowledge and Skills for Employment Scientific Investigation in Health Science

 Microbiological Laboratory Skills Observing Microorganisms Through a Microscope

 Prokaryotic Cell Structure Microbial Growth

The Control of Microbial Growth           History of Microbiology

Microorganisms and Wellness                Human Immune System

 Viruses, Viroids, and Prions      Microbial Mechanisms of Pathogenicity

 Antimicrobial Drugs                   Microbial Diseases

 Drug-resistant Microorganisms Hospital-acquired infection

 Emerging and Reemerging Diseases            Role of Governing Agencies