Unit 2: Energy Flow, Photosynthesis, Cellular Respiration

Energy Flow

100

What Secondary Consumer in this Food Web (give at least 2)

Bird, Frog, Owl, Fox

200

What would be a direct impact of an increase in the amount of Frogs in the Ecosystem 

2 Options 

1) Increase in the number of owls

2) decrease in the amount of Grasshoppers 

300

Secondary Consumers have how much of available energy?

1% of the original Energy in the ecosystem 

400

Using this Food web, how much energy does the fox have with a total of 1500 Calories

Flowers---> Insects---->Vole-----> Fox 

1.5 calories 

500

What is the difference between a primary consumer and a secondary consumer give an example of each 

Primary Consumer: Consumes Producers, they are usually herbivores, or omnivores 

Secondary Consumers: Consume Primary consumers, they are usually carnivores and sometimes omnivores

Examples will vary

Photosynthesis

100

Why is photosynthesis Preformed 

To store Solar Energy as Chemical (food) energy 

200

What are the Products of the Light Dependent stage of Photosynthesis 

O₂ and ATP/NADPH which will be used for the Calvin cycle 

300

What are 3 factors that affect the rate of photosynthesis

Amount of available water

Amount of available Carbon dioxide 

Amount of available Sunlight 

400

Give the Balanced Equation for Photosynthesis, listing the reactants and Products 

H₂0 + CO₂---> O₂+ C₆H₁₂O₆

_{The Reactants are Water and Carbon dioxide
The Products are Oxygen and Glucose} 

500

Explain what is happening during the Calvin Cycle 

there are four main steps....(think Grab, Split, Leave, ,Switch)

Grab: Take the Hydrogen from the water that was split during the ETC

Split: Split the Carbon Dioxide into Oxygen and Carbon 

Leave: The newly split  Carbon and Oxygen

Switch: Switch out some bonds with Hydrogen to create Glucose 

Cellular Respiration

100

How much ATP is produced during Glycolysis 

2 ATP

200

Which Process Yields the Highest amount of ATP and How much ATP does it yield? 

ETC ( Electron Transport Chain) and it yields 34 ATP

300

What are the Two ways that energy is produced in cellular respiration when oxygen is not available, what is created in each one?

1) Lactic Acid: Creates energy and Lactic Acid

2) Alcohol : Creates energy and Alcohol 

400

Give the Balanced chemical equation of Cellular Respiration list the reactants and Products 

C₆H₁₂O₆ +O₂---> H₂O + CO₂ +Energy 

The Reactants are Glucose and Oxygen 

The products are Water, Carbon dioxide, and Energy in the form of ATP

500

Explain the steps that a glucose molecule will go through to be broken down for usable energy when oxygen is present 

1) Glycolysis will break the glucose down into Pyruvate and energy carrying molecules 

2) The Citric Acid (Kreb)Cycle: The Pyruvates are used to create CO₂ and more energy that will be used in the next step 

3) The ETC: Occurs in the Inner membrane this uses O₂ and energy carrying molecules to make even more ATP (34) 

 

Photosynthesis, and Cellular Respiration

100

What is the Goal of Cellular Respiration?

The Goal of Cellular Respiration is the Convert Stored food energy into usable chemical energy stored in ATP

200

List the Two Major Organelles that Help with Photosynthesis and Cellular Respiration. What are the parts of Each Organelle 

Chloroplast 

1) Granna

2) Stroma

Mitochondira 

1) Matrix

2) Inner Membrane 

300

Explain the difference with Endothermic Reactions and Exothermic Reactions, Give an example of each 

Endothermic Reactions Absorb energy and example is Photosynthesis

Exothermic Reactions  release energy and example is Cellular Respiration 

400

Write both equations for Cellular respiration and Photosynthesis, Explain how the equations are similar and different 

H₂O + CO_{2 --->} C₆H₁₂O₆  + O₂

O₂ + C₆H₁₂O_{6 ------>} CO₂ + H₂O

Answers may vary 

500

Explain the process of the energy flow from Sun to Human be specific 

1) Plants Take in sunlight and convert into Glucose through the process of ETC and Calvin Cycle 

2) Animals or humans eat the Glucose produced by plants and use that energy to create large amounts of ATP through Cellular Respiration, More specifically The Krebs cycle and ETC

3) Humans will then eat the animal or the plant directly to covert that glucose into ATP through Cellular Respiration 

Cumulative

100

Where does all energy come from?

The Sun

200

All energy must turn into _____ before it can be used

ATP

300

List all Macromolecules and Give the order that your body will break them down for energy 

1. Carbs 2. Lipids 3. Proteins 4. Nucleic acids 

400

List all stages of the Cell cycle and explain what happens in each one 

1. Interphase: Cell Growth and Preparation for division 

2. Prophase: Nuclear Membrane dissolves and Chromosomes form 

3. Metaphase: Spindle fibers from Centrioles move Chromosomes into the middle of the cell 

4. Anaphase: Spindle Fibers Separate sister chromatids and bring them to opposite sides of the cell 

5. Telophase: New Nucleus forms on each side of the cell, Chromatids begin to unravel into chromatin, cells begin to pull apart and create a cleavage furrow/Cell Plate

6. Cytokinesis: The cell Divides into 2 IDENTICAL sister cells 

500

Compare and Contrast Eukaryotes and Prokaryotes

Prokaryotes: Single celled organims that lack a nuclues, chromosomes, and Membrane bound organelles. They replicate through Binary Fission 

Eukaryotes: Single and Multicellular Organisms that have a nucleus , Chromosomes, and Organelles, they replicate through Mitosis/ Miosis