This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
Update
21/09/16 - L16 Biology - Stages divided up
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
This lesson is from the series of lessons that I have created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
These lessons have been created for the New Combined Science Trilogy course and are linked to the new AQA specification.
Each lesson varies in its content and are sold individually but they are also available as a complete BUNDLE (see bundles and SAVE).
Lessons include:
- Lesson Plan – a clear overview of the lesson, links to specification, three main objectives, keywords, resources, starters, 3 main activities and plenaries. Ideas are also included for differentiation for lower and more able students.
- PowerPoint – with lesson objectives and keywords on each slide.
- Additional resources – printable sheets for starters/plenaries/investigations.
- Support sheets – guidance for demonstrations and practical activities
All of these lessons will be continually updated and so please continue to revisit these resources for the most up to date resources.
If you have purchased the draft specification lessons, please email for the instructions on how to get your lessons updated to the new specification – orders@achieveinscience.com
Lessons in the series include:
1 Animal and plant cells
2 Bacteria cells
3 Specialised cells
4 Microscopy
5 Mitosis and cell cycle
6 Stem cells
7 Stem cells debate
8 Diffusion
9 Diffusion 2
10 Osmosis
11 Osmosis 2
12 Active Transport
13 Tissues and organs
14 Enzymes
15 Enzymes and pH/ Enzymes and temperature
16 Enzymes in digestion/ Speeding up digestion
17 Structure and function of the heart
18 Pacemakers
19 Breathing
20 Blood vessels
21 Blood
22 Artificial hearts, valves and stents
23 A healthy diet
24 Inheritance, exercise and health
25 Drugs
26 Cancer
27 Transport in plants
28 Transport in plants 2
29 Transpiration
30 Pathogens and disease
31 Microbial case studies
32 Defence mechanisms
33 Immunity and vaccination
34 Drugs for disease
35 Developing new drugs
36 Developing new drugs
37 Photosynthesis
38 Limiting factors
39 Limiting factors
40 Aerobic respiration
41 Anaerobic respiration
42 Effect of exercise
43 Metabolism
Resources included:
- All combined science lessons with lesson plan, Powerpoint and other resources.
If you have any questions about these resources then please contact us at admin@achieveinscience.com
End of Topic Tests for Combined Science
These can be used at the end of each unit to assess students. Throughout the year more assessments will be added. These can be accessed via the download link and you will not have to pay extra for these.
These will only be sold as a set or as part of the subscription bundle. Please follow the link to our subscription bundle which includes all lesson, revision, intervention and assessment materials.
https://www.tes.com/teaching-resource/aqa-combined-science-trilogy-subscription-2016-with-lessons-assessment-revision-and-intervention-11357385
End of Topic Tests:
1. Cell Structure
2. Organisation
3. Infection and Response
4. Bioenergetics
Updated lessons and resources for teaching Trilogy Combined Science
Includes:
Lesson plans with objectives, links to specification, differentiation, resources
Lesson powerpoint
Lesson worksheets and resources
Updated lessons and resources for teaching Trilogy Combined Science
Includes:
Lesson plans with objectives, links to specification, differentiation, resources
Lesson powerpoint
Lesson worksheets and resources
Updated lessons and resources for teaching Trilogy Combined Science
Includes:
Lesson plans with objectives, links to specification, differentiation, resources
Lesson powerpoint
Lesson worksheets and resources
Updated lessons and resources for teaching Trilogy Combined Science
Includes:
Lesson plans with objectives, links to specification, differentiation, resources
Lesson powerpoint
Lesson worksheets and resources
A full set of flash cards to aid revision. Question on one slide and then key responses on the following slide. These can be printed or saved on a phone to use.
All of the key topics are covered on the flash cards, including diet, health, pathogens, vaccinations, antibiotics, reflex, synapses, nerves, menstrual cycle, fertility, auxins, homoeostasis, drugs, thalidomide, smoking, alcohol, ecology, plants, environment, biomass, food chains, decay, carbon cycle, variation, DNA, chromosomes, genetics, cells, natural selection and more.
A full set of flash cards to aid revision. Question on one slide and then key responses on the following slide. These can be printed or saved on a phone to use.
All of the key topics are covered on the flash cards, including cells, specialised cells, photosynthesis, respiration, adaptations, glucose, limiting factors, enzymes, pH, distribution of organisms, digestive system, DNA, chromosomes, mitosis, meiosis, stem cells, genes, genetic crosses, genetic disorders and more.