John Atchley
Biological Science Instructor

Welcome to SCIENCE!

Mr. Atchley's Classes
(815)433-1323 (EXT. 2453)
-If you have any questions, please E-mail me at 

Biology 1 (Freshman Acad.)
        -This class is designed to help students gain a greater understanding of the content and function of Biological Science.  It is designed as an entry level class with early focus on review, moving to more advance biological science systems later in the year.  This is a 2 semester course and is a "MUST PASS" for most of the students at OTHS (Meaning, if you want a diploma, you need a passing grade!)  
        -This class is designed to maximize content and practice while still leaving time to work through critical thinking, standardized test preparation, and cross-curicular vocabulary and "root terms."
        -This website IS A WORK IN PROGRESS, Please check back often.

In class PowerPoint Lectures (These are PDF files that mimic the PowerPoints used for lecture in Biology I)
        <Great place to go to study before your test!!!>

Tutoring Sessions (Click these for some extra guided help)

Worksheets and simulations:
Ch 9 Cellular Respiration - Online simulation LINK1   <Adobe Flash Required> <May not work on school comps.>
Same thing as simulation, but it is a youtube video of somebody doing the simulation:  

Instructions for ONLINE BOOK ACCESS:

1. Use the link below:

2. Enter the following information
  • Login: OTHSbiology1819
  • Pass: oths1819
3. Choose the correct book cover

Remind App:


Adv. Biology (Jr and Sr)
        -This is an advanced class designed to focus on college level curriculum
        -The text for this class room is AP level
        -Students should expect to do significant amounts of reading, note taking, and outside of class work

In class PowerPoint Lectures (These are PDF files that mimic the PowerPoints used for lecture in Biology I)
        <Great place to go to study before your test!!!>

ADV. Bio Remind App:

Semester 1 Root Words:

Semester 1 Root Words List #1
Root Definition         Example(s)
A = Not; Without                (Acoelomate)
An = Not; Without               (Anaerobic)
Bio = Life                      (Biology)
Ab = Off, From, Away    (Aboral)
Ad/Ac = To, Toward              (Adoral; Accelerate)
-logy =Study of                 (Biology)
Root Words List #2
Root Definition                         Example(s)
Arthro- = Jointed                       (Arthropod)
Ambi- / amphi- = Both; either   (Ambidexterity)
Auto- = Self                            (Autopilot)
Ante- = Before                          (Antedate)
Anti- = Against                                 (Antidote)
Lip- / Adip- =Fat                       (Lipid)
Root Words List #3
Root Definition                         Example(s)
Vit- / Viv- = Life                              (Vital; Vitalism; Vitamin; Vivarium)
De- = Down; From; Out           (Dehydrate; Decapitate; Defecate)
–mer = Part                           (Polymer; Monomer; isomer)
Mono- = One, only, single               (Monomer; mononucleosis; monogamy)
Poly- = Many                            (Polymer; polydactyl; polyploidy)
Sacchar- = Sugar                        (Polysaccharide; monosaccharide; Saccharomyces)
Root Words List #4
Root Definition                         Example(s)
Hem- = Blood                            (Hemoglobin; Hemophilia)
Hetero- = Other; different              (Heterotrophic; Heterogeneous)
Cyt- = Cell                             (Cytoplasm; Cytokinesis)
Eu- = True                              (Eukaryote; Euchromatin)
Hyper- = Over, Excessive                (Hypertonic; Hypertension)
Hypo- = Under                           (Hypotonic; Hypotension)
Root Words List #5
Root Definition                         Example(s)
-ton(ic) = Dissolved solute; tension (Hypertonic; Hypotonic)
Homo - = Same                   (Homozygous; Homogenized)
-troph = Nourished                      (Heterotrophic; Autotrophic)
Chlor(o)- = Green                       (Chlorophyll; Chloroform)
Chrom(o)- = Color                       (Chromosome; Chromatin)
Photo- = light                          (Photosynthesis; photograph)
Root Words List #6
Root Definition                         Example(s)
-al = Having the characteristic of      (Caudal; Chromosomal; Hypodermal)
Amyl- = Starch                          (Amyloplast; Amylase; Amyloid)
-ate = The act of (verb)                (Decapitate; Defecate; Agitate)
Cephal- / capit- = Head                 (Decapitate; Cephalic; Cephalopod)
Caud- = Tail                            (Caudal; Caudocephalad; Acaudal)
Bi- / Di- = Two, Double, Both   (Bicycle; Bilateral; Diphosphate)

Root words #7
Root            Definition              Examples
Echin           Spiny                   Echinoderm, Echidna
Ect             Outside         Ectoparasite, Ectoplasm
Entomo  Insect                  Entomology, Entomologist
Epi             Over                    Epidermis, Epinephrine, Epipen          
Eu              True                    Eukaryote, Eukaryote, Eutrophic

-If you have any questions, please E-mail me at 

Rotary Interact Remind:



"The reason a lot of people do not recognize opportunity is because it usually goes around wearing overalls looking like hard work."
                -Thomas A. Edison