
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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- Many enzymes help in cellular respiration. Using the figure to the right, explain the difference between this reaction with and without an enzyme. You must use the following terms in your answer; active site, induced fit, substrate and activation 1. Enzyme Action Without enzyme Activation energy without enzyme energy. With enzyme Activation energy with enzyme Reactants: Glucose + 0, Overall energy released during reaction Products: co, + H,0 Do NOT answer both questions 2 and 3. Choose only ONE to answer in the space provided. 2. The enzyme catalase is a polypeptide. Would you expect this enzyme to move through the cell membrane via simple diffusion? Explain your answer and provide a possible solution if catalase can't move across a membrane. 3. It is important for humans to make sure they consume small amounts of minerals (e.g. magnesium oxide or zinc oxide) in their food or in a supplement of some sort. Explain the value that some minerals play in assisting with many of our body's…arrow_forward=display&toolld3calendar-mybb, Gmail YouTube Maps calendar-tool Home Courses C A Question Completion Status: 20 3D 70 100| 11凸|12D|| 130 14 150 16 170 QUESTION 14 A newly isolated bacterial isocitrate dehydrogenase is found to have a molecular mass of 180KDA and SDS-PAGE shows it to be a homodimer. 1mg of enzyme produces 0.05 mmoles of product per minute per mL. What is the turnover number of this enzyme in µmol product produced per pmol of enzyme subunit per mL? O a. 4.5 Ob.4500 O c. 9000 O d.9 QUESTION 15 The absorption spectrum of NAD" and its reduced form NADH are shown below: Absorption 2,4 2,0 1,6 Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Ar 8 11 JAN 9. tv W ... LOarrow_forwardHelp with "d" through "h"arrow_forward
- If a person’s liver does not produce the enzyme at #2, what implications does this have for the person’s diet? Check all that apply. Group of answer choices a. The person cannot store fat in the body and would need to eat constantly b. The person cannot produce a glucose alternative fuel c. The person cannot store glucose in the body and this nutrient become essential d. The person would not be able to maintain a low-carb diet for long periods e. The person’s brain would not function properlyarrow_forwardGive the Steps, Enzyme/s involved, Electron carriers, ATP Generation, End product and significance of the following metabolic pathway: Kreb's Cycle (explain in 1-3 sentences only)arrow_forwardHow do non-competitive inhibitors affect KM and Vmax? (explain with details) Feedback inhibition typically impedes the activity of the enzyme that catalyzes the first committed step of a metabolic pathway, rather than an enzyme that catalyzes a later step in the pathway. Why is this adaptive?arrow_forward
- Background information: A static respirometer can be used to measure metabolic rates of small aquatic organisms such as fish and crayfish. The animal is weighed and placed in the chamber. The chamber is then filled completely with water and sealed, and the dissolved oxygen level in the water is measured for 30 – 60 minutes. The animal is then removed and the respirometer is rinsed before being filled with clean water for the next trial. Metabolic rates can be calculated knowing the oxygen consumption rate, the volume of the chamber, and the weight of the animal. The picture shows a typical static respirometer. The probes on the lid measure dissolved oxygen and temperature and are linked to a computer for data collection. When using a static respirometer, the usual procedure calls for filling the chamber completely with water and making sure there is no air left at the top of the chamber when it is sealed. Why is this important, i.e., how would trapped air influence the metabolic…arrow_forwardIt makes sense that enzymes should be active when they are needed and inactive when they are not needed. Non-competitive (allosteric) regulation of enzymes is important in metabolism because it allows for the rapid adjustment of their activity. Recall hexokinase, a key enzyme of glycolysis. Which of the following molecules likely functions as an allosteric inhibitor of its activity? A. ADP B. Glucose C. NAD+ D. Pyruvatearrow_forwardb. You conduct some additional experiments to elucidate the starlase metabolic pathway. Your results are shown below. Use this information alongside information from the complementation table above to place the intermediates in the correct order on the pathway. (HINT: use the complementation groups from the table above to help you consolidate information on the tables below. Reference practice question 3 from today's lecture for help). Mutant 1 2 3 4 5 6 Precursor --> [Select] None [Select] Addition to minimal medium starlase + + + + + + --> starlase P + + [Select ] T + O + c. Mutant 2 has a loss-of-function mutation for which enzyme in the starlase synthesis pathway? [Select] E1 E2 E3 E4 Precursor → Intermediate 1 → Intermediate 2 → Intermediate 3 → starlasearrow_forward
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