By the end of this section, you will be able to:Describe how electrons move through the electron transport chain and what happens to their energy levelsExplain how a proton (H+) gradient is established and maintained by the electron transport chain

By the end of this section, you will be able to:Describe how feedback inhibition would affect the production of an intermediate or product in a pathwayIdentify the mechanism that controls the rate of the transport of electrons through the electron transport chain

By the end of this section, you will be able to:Discuss the concept of entropyExplain the first and second laws of thermodynamics

By the end of this section, you will be able to:Discuss the concept of entropyExplain the first and second laws of thermodynamics

Students use a simple pH indicator to measure how much CO2 is produced during respiration, at rest and after exercising. They begin by comparing some common household solutions in order to determine the color change of the indicator. They review the concepts of pH and respiration and extend their knowledge to measuring the effectiveness of bioremediation in the environment.

Video tutorial for cellular respiration: overview, glycolysis, citric acid cycle and electron transport chain.

In this unit, students look at the components of cells and their functions and discover the controversy behind stem cell research. The first lesson focuses on the difference between prokaryotic and eukaryotic cells. In the second lesson, students learn about the basics of cellular respiration. They also learn about the application of cellular respiration to engineering and bioremediation. The third lesson continues students' education on cells in the human body and how (and why) engineers are involved in the research of stem cell behavior.

Cellular Respiration Text, Diagrams, Assessments, and Link to Standards

Summary Diagram of the four major stages of cellular respiration.  Attributions:  Figure modified from OpenStax, Carbohydrate Metabolism. OpenStax CNX. Jan 5, 2015 http://cnx.org/contents/9d68abf9-4c2e-4ef7-88d1-c963c5c844b9@4.   NADH and FADH2 images modified from BQmUB2012173 [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)].  

In this lesson, students learn about the basics of cellular respiration. They also learn about the application of cellular respiration to engineering and bioremediation. And, students are introduced to the process of bioremediation and several examples of how bioremediation is used during the cleanup of environmental contaminants.

Two lessons and their associated activities explore cellular respiration and population growth in yeasts. Yeast cells are readily obtained and behave predictably, so they are very appropriate to use in middle school classrooms. In the first lesson, students are introduced to yeast respiration through its role in the production of bread and alcoholic beverages. A discussion of the effects of alcohol on the human body is used both as an attention-getting device, and as a means to convey important information at an impressionable age. In the associated activity, students set up a simple way to indirectly observe and quantify the amount of respiration occurring in yeast-molasses cultures. Based on questions that arise from this activity, in the second lesson students work in small groups as they design and execute their own experiments to determine how environmental factors affect yeast population growth.

This is information to be used for a General Biology I (or Introduction to Biology) course for non-science majors.

Students explore the science of microbial fuel cells (MFCs) by using a molecular modeling set to model the processes of photosynthesis and cellular respiration—building on the concept of MFCs that they learned in the associated lesson, “Photosynthesis and Cellular Respiration at the Atomic Level.” Students demonstrate the law of conservation of matter by counting atoms in the molecular modeling set. They also re-engineer a new molecular model from which to further gain an understanding of these concepts.

The following six figures represent electron transport chains functioning within the processes of nitrification and denitrification within the nitrogen cycle, and methanogenesis within the carbon cycle. Each figure is included with and without a legend. Figure 1 represents oxidation of ammonia to nitrite, the first phase of nitrification. Figure 2 represents oxidation of nitrite to nitrate, the second phase of nitrification. Figure 3 represents reduction of nitrate to molecular nitrogen through denitrification. Figure 4 represents oxidation of ammonia to nitrous oxide by ammonia-oxidizing bacteria. Figure 5 represents reduction of nitrate to nitrous oxide by incomplete denitrification. Figure 6 represents reduction of carbon dioxide by hydrogen gas to produce methane.

This illustration depicts the first two stages of aerobic respiration: glycolysis and the citric acid cycle.

Students set up and run the experiments they designed in the Population Growth in Yeasts associated lesson, using simple yeast-molasses cultures in test tubes. Population growth is indicated by the amount of respiration occurring in the cultures, which in turn is indicated by the growth of carbon dioxide bubbles trapped within the culture tubes. Using this method, students test for a variety of environmental influences, such as temperature, food supply and pH.

This is a laboratory manual designed for an Introductory Biology Course. Topics covered include Data and Literature, Basic Scientific Skills, the Scientific Method, Macromolecules, Diffiusion and Osmosis, Enzymes, Microscopes and Cells, Cellular Respiration and Photosynthesis, The Cell Cycle, Mitosis and Meiosis, Genetics and DNA Fingerprinting. Each lab has a pre-laboratory assignment and post-laboratory assignment for students to complete. Additional resources referenced in the lab are provided, as well as grading rubrics for every assignment and a Lab Instructor Manual that contains lab notes and results from the lab exercises. A recipe list for all reagents is also included. 

Photosynthesis is a process by which plants synthesize glucose and oxygen in presence of sunlight through light dependent reactions by utilization of sunlight, water to synthesize oxygen, ATP and NADPH and light-independent reactions to synthesize carbon dioxide and carbohydrates. Cellular respiration is a metabolic pathway that breaks down glucose through glycolysis, pyruvate oxidation, citric acid / Krebs cycle and oxidative phosphorylation. Primary producers produce energy and consumers derive energy from primary producers. Primary productivity is the accumulation of energy in form of biomass. Integrating biological science and mathematics helps to understand how differential regulation of factors impacting metabolic pathways and processes impact primary productivity.

Students typically find linear regression analysis of data sets in a biology classroom challenging. These activities could be used in a Biology, Chemistry, Mathematics, or Statistics course. The collection provides student activity files with Excel instructions and Instructor Activity files with Excel instructions and solutions to problems.

Students will be able to perform linear regression analysis, find correlation coefficient, create a scatter plot and find the r-square using MS Excel 365. Students will be able to interpret data sets, describe the relationship between biological variables, and predict the value of an output variable based on the input of an predictor variable.