Oxygen is a _____________ allosteric _____________ that promotes additional O 2 binding to hemoglobin.

So this practice problem wants us to fill in the blanks in the following sentence, which says that oxygen is a blank allosteric blank that promotes additional oxygen binding to hemoglobin and we've got these 4 potential answer options below where this first blank is either going to be heterotrophic or homotrophic and then this second blank is either going to be repressor or activator. And so recall from our previous lesson videos that anything such as oxygen that promotes the additional binding of the same exact thing. So oxygen promoting additional binding of oxygen is going to make that thing a homotrophic allosteric effector and so heterotrophic would mean that oxygen would be promoting the binding of something different, but homotrophic means that oxygen is promoting the additional binding of the same thing oxygen And so we can eliminate any answer option that says, heterotrophic. And so now, we're between activator or repressor and so recall that because, it's promoting additional binding instead of inhibiting the binding, that is going to make it an allosteric activator. And so it's option B that is the correct answer for this problem and that concludes this practice. So I'll see you guys in our next, video.

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1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

8. Protein Function

Hemoglobin Cooperativity

Biochemistry

8. Protein Function

Hemoglobin Cooperativity

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Multiple Choice

Oxygen is a _ allosteric _ that promotes additional O₂ binding to hemoglobin.

Heterotropic, Repressor.

Homotropic, Activator.

Heterotropic, Activator.

Homotropic, Repressor.

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Verified step by step guidance

Understand the concept of allosteric regulation: Allosteric regulation involves the binding of a molecule at a site other than the active site, which affects the activity of the protein.

Identify the role of oxygen in hemoglobin: Oxygen acts as an allosteric effector in hemoglobin, influencing its ability to bind additional oxygen molecules.

Differentiate between homotropic and heterotropic effectors: Homotropic effectors are molecules that are the same as the substrate, while heterotropic effectors are different molecules.

Recognize the function of activators and repressors: Activators enhance the activity of the protein, while repressors decrease it.

Apply these concepts to hemoglobin: Oxygen is a homotropic activator because it is the substrate itself and promotes further oxygen binding to hemoglobin.