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Unit 3: Cellular Energetics

AP Biology

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Presentation Slides, Enzyme Catalysis

Browse slides from the stream 'Enzyme Catalysis.'

Enzyme Catalysis

Learn about how the body uses enzyme catalysis.

Fiveable Fridays Unit 3 Trivia

25 questions to review your understandings of cellular energy and respiration and enzyme function! respiration and enzyme

📝study guide

3.0 Unit 3 Overview: Cellular Energetics

All organisms require energy in order to function. This energy comes from a variety of sources, but all energy on earth originated in the sun. Energy is neither created nor destroyed, it is just transformed. All living things transfer energy between them. Photosynthesis is the process of converting light energy into chemical energy.

Cellular Energy

In this session, Caroline reviews the importance of energy in cells. She goes into detail about cellular respiration and photosynthesis and reviews an FRQ.

Presentation Slides, Cellular Energy

Browse slides from the stream 'Cellular Energy.'

Review of Unit 3

Host Kari Parnin reviews AP Biology Unit 3 covering main topics: enzyme structure and function, cellular respiration, and photosynthesis.

Review of Unit 3 - Slides

Browse slides from the stream 'Review of Unit 3.'

Cellular Respiration - Slides

Browse slides from the stream 'Cellular Respiration.'

Cellular Respiration

Host Kari Parnin discusses the complex process of cellular respiration, outlining how chemical energy is converted into usable cell energy--ATP.

Environmental Impacts on Enzyme Function - Slides

Browse slides from the stream 'Environmental Impacts on Enzyme Function.'

Environmental Impacts on Enzyme Function

Review of the various factors that affect enzyme activity.

Photosynthesis

Kari Parnin provides a thorough look at the process of photosynthesis diving deep into what occurs in the light dependent reactions and the Calvin Cycle. A focus on electrons, energy, and energy coupling is seen throughout.

Photosynthesis - Slides

Browse slides from the stream 'Photosynthesis.'

Enzyme Catalysis

In this session, Jessica will build upon how the structure of an enzyme allows it to decrease the activation energy of a reaction and increase the rate in which that reaction occurs.

Enzyme Catalysis - Slides

Browse slides from the stream 'Enzyme Catalysis.'

Enzyme Structure

Kari Parnin introduces Unit 3 Cellular Energetics by giving an overview of enzymes: basic properties, important terminology, and connections to previous units.

Enzyme Structure - Slides

Browse slides from the stream 'Enzyme Structure.'

Photosynthesis

In this session, we cover photosynthesis. We begin by discussing the purpose of photosynthesis (converting light into usable, chemical energy). We cover the two major steps of photosynthesis (by discussing light reactions and the Calvin cycle). We understand the multi-step process of light reactions (chloroplast stroma and thylakoid lumen). We discuss what goes in and what comes out with light reactions, and we discuss what goes in and what comes out with the Calvin cycle. We give an overview of the entire process, before ending with multiple choice practice (in a lab set up).

Photosynthesis - Slides

Browse slides from the stream 'Photosynthesis,' where we cover topics including Energy, Cellular Processes, and Systems.

Cellular Respiration - Slides

Browse slides from the stream 'Cellular Respiration,' where we cover topics including Cellular Processes, Cellular Respiration, and Energy.

Cellular Respiration

In this summary, we discuss cell structure and cellular transport by stating the purpose of cellular respiration (converting food sources into usable energy). The 3 major steps in cellular respiration are covered (glycolysis & pyruvate oxidation, Krebs [citric acid] Cycle, & electron transport chain). We discuss glycolysis and pyruvate oxidation to show what will go in and what will come out. Electron carriers must be recycled (alcohol fermentation and lactic fermentation). We show the electron transport chain and chemiosmosis and end with multiple choice practice.

📝study guide

3.1 Enzyme Structure

Enzymes are biological catalysts that are made of protein. The specific pattern of amino acids that make up an enzyme determines its three-dimensional shape and the substrate that it will act upon. The three-dimensional shape of an enzyme forms an active site. This site is where the substrate, or molecule that the enzyme acts upon, binds to the enzyme.

📝study guide

3.2 Enzyme Catalysis

A catalyst is a substance that increases the rate of a reaction. An enzyme is a biological catalyst, a specific subcategory. Enzymes function by decreasing the activation energy necessary for a reaction to occur. This can be shown in the graph below. As portrayed, the energy associated with reactants and products of the reaction does not change due to the presence of the enzyme.

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3.3 Environmental Impacts on Enzyme Function

Changes in the environment will affect the speed in which an enzyme functions.

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3.4 Cellular Energy

All organisms require the input of energy in order to facilitate metabolic processes. All energy originates with the sun. This energy is converted into cellular energy by photosynthetic organisms. This energy can then be broken down further into the most basic form of cellular energy, adenosine triphosphate, ATP.

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3.5 Photosynthesis

Photosynthesis is a chemical process with the following equation: H2O + CO2 → C6H12O6 + O2. Both plants and photosynthetic bacteria are capable of this complex conversion process. The overall reaction is spurred by the energy from a photon of light striking a pigment in the chloroplast.

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3.6 Cellular Respiration

Cellular Respiration is a chemical process with the following equation: C6H12O6 + O2 → H2O + CO2. All organisms, including those capable of photosynthesis, go through the process of cellular respiration. The overall reaction breaks down a carbohydrate, most frequently modeled by glucose, and converts the energy stored in that molecule into the most basic cellular energy, ATP.

📝study guide

3.7 Fitness

Fitness refers to the fact that organisms have varying abilities to survive and reproduce. Individuals with beneficial traits, called adaptations, are more capable of survival and reproduction in their environment.

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Free Reviews 2020

27 resources

Unit 1: Chemistry of Life

32 resources

Unit 2: Cell Structure and Function

38 resources

Unit 3: Cellular Energetics

29 resources

Unit 4: Cell Communication and Cell Cycle

26 resources

Unit 5: Heredity

20 resources

Unit 6: Gene Expression and Regulation

26 resources

Unit 7: Natural Selection

27 resources

Unit 8: Ecology

14 resources

General Review

8 resources

2019 Reviews

13 resources

Cram Sessions 2019

6 resources

Free Response Questions (FRQ)

11 resources

Multiple Choice Questions (MCQ)

1 resource

Blogs

6 resources

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