Worksheet 12 - Metabolism concepts PDF

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Metabolism concepts...

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Worksheet 12 Metabolism concepts Learning Objectives. This activity will help you: • • • •

Determine if a reaction will occur spontaneously or not Relate free energy, stability, and work capacity Identify and describe exergonic and endergonic reactions in terms of spontaneity, energy, free energy, give examples and analogies Model and describe how ATP is regenerated

Evaluation. The worksheet will be graded as: Needs improvement

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Drawings only (no models) can earn a max of 7/10 if everything else is perfect. 0-5 points

6-7 points

Instructions. Answer the questions below. When you’re finished, upload your assignment into Blackboard as a .docx or .pdf (no .pages because I can’t view those).

1 WS-Energy and ATP, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

1. Choose either “more” or “less” for each item below.

2 WS-Energy and ATP, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

Endergonic: less free energy Less stable More work capacity

3

Exergonic: more free energy More stable Less work capacity

2. Complete the table below to compare endergonic versus exergonic reactions. Exergonic

Reaction

Spontaneous Released from the reaction

∆G < 0 Reactants have more free energy than products

Downhill

Exergonic is when energy is released to the environment and is spontaneous.

Spontaneity Spontaneous OR nonspontaneous Energy added to the reaction OR released from the reaction ∆G ∆G > 0 OR ∆G < 0 Reactants/products Reactants have more free energy than products OR Products have more free energy than reactants Analogy uphill OR downhill Define each in your own words

Endergonic Nonspontaneous Added to the reaction

∆G > 0 Products have more free energy than reactants

Uphill Endergonic is when energy is stored in the products and is nonspontaneous.

4 WS-Energy and ATP, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

Glycosis

Provide an example in cell biology

Protein synthesis

5 WS-Energy and ATP, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

3. Create a model for how ATP is broken down and regenerated. a. In Table 1 below, describe how you will model the molecules related to ATP regeneration.

Table 1. Structures Ribose Adenine Phosphate group x 3 Water molecule

Describe how its represented in your models below in Table 2. (example: Snickers bar) Erase Hair tie Lead

b. In Table 2 below, i. Draw the molecules related to ATP regeneration. Drawings can be done in many different ways; however, pasted images taken from anywhere including online will not be accepted. ii. Model these molecules with items you have around your house. No models (only drawings) can earn a max of 7/10 if everything else is perfect. iii. Describe the energy potential for each set of molecules.

6 WS-Energy and ATP, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

Table 2. Molecules

Drawing

Model (photo)

ATP

Describe the energy potential of this molecule Energy from catabolism (exergonic, energy – releasing processes)

and water

Energy is released during ATP hydrolysis and coupled to power cellular work

Energy generated from catabolic/exergonic processes is harvested to regenerate ATP

Molecules

Drawing

Model (photo)

Describe the energy potential of this molecule

7 WS-Energy and ATP, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

ADP

Energy for cellular work (endergonic, energy – consuming processes)

and inorganic Phosphate

8 WS-Energy and ATP, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

Academic Integrity Statement I have completed this assignment with academic integrity, as defined in the syllabus and according to NIU policy (https://www.niu.edu/academic-integrity/index.shtml), including creating my own novel work and not sharing my work with others to reuse in the future. All participation in scholarly discussions and brainstorming of ideas with peers were done in an ethical manner, enabling creative thought without jeopardizing academic integrity. A missing signature will result in a score of 0.

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9 WS-Energy and ATP, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online...