BIOL 3332 Lecture Notes - Lecture 21: Atp Synthase, Oxidative Phosphorylation, Citric Acid Cycle

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magentafly481

17 Nov 2016

School

University of Houston

Department

Biology

Course

BIOL 3332

Professor

Knapp Richard

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Document Summary

Lecture 20: reduction potential is related to free energy. A more negative reduction potential better electron donor. A more positive reduction potential is a better electron acceptor: made of cytochromes, quinones, oxidoreductases, proton motive force. So like right by the cell membrane it will be more positive directly on the outside and more negative directly on the inside. Drives atp synthesis through the f1f0atp synthase: atpase. F0 subunit turns as the protons move through it. This causes f1 subunit to turn also. F1 portion has the atp synthase action: adp + p atp, na pumps can make a sodium motive force. Substrate level phosphorylation: makes 4 atp: c6h12o6 + 6o2 6co2 + 6h2o + 4atp. Oxidative phosphorylation makes much more atp: glycolysis, pyruvate acetyl-coa, krebs cycle. Anaerobic respiration- respiration done in the absence of oxygen: bacteria and archaea can use a variety of inorganic & organic terminal electron acceptors.

Related Questions

Part 1

The enzyme responsible for the synthesis of ATP is

Multiple choice

ATP-ase.

cytochrome C.

NADPH.

ATP synthase.

Part 2

The terminal electron acceptor in the electron transport chain is water.

True/Fale

Part 3

Alex, Kim, and Jenna have different levels of activity, and thus require a varied amount of calories per day. Alex is an athlete, and he requires 3500 calories per day to fuel his high intensity activity. Jenna is a secretary and is sedentary most of her day. Her low level of activity requires a mere 1800 calories a day, while Kim, a professional dancer, needs 2800 calories per day to fuel her moderate level of activity.

	Jenna	Kim	Alex
Profession	Secretary	Professional Dancer	Athlete
Level of Activity	Low	Moderate	High
Caloric Needs	1800 Calories/Day	2800 Calories/Day	3500 Calories/Day

Fats are broken down in cellular respiration to generate the ATP needed to fuel our bodies. According to the Food and Drug Administration (FDA), the Percent Recommended Daily value for fats in a balanced diet should not exceed more than 30% of the total daily calorie intake. Fats provide 9 calories per gram.

Nutritional needs of Jenna

What question would this calculation answer?
Finding 30% of 1800 calories and then dividing by 9 calories per gram.
1800 calories x 0.30 = 440 calories
440 calories/9 calories per gram = 49 grams

Multiple Choice

How many grams of fat can Jenna consume in one meal?

How many fat calories can Jenna consume each day?

How many calories are found in 9 grams of fat?

How many grams of fat can Jenna consume each day?

Part 4

Proton pumps are protein complexes that

Multiple Choice

synthesize water from hydrogen and oxygen.

break down water into hydrogen and oxygen.

move hydrogen ions across cell membranes.

move electrons through the cell membrane.

Part 5

As protons move through the proton pump,

Multiple Choice

the membrane becomes more permeable to the hydrogen ions.

the concentration of hydrogen ions inside and outside the cell reaches equilibrium.

they build up on one side of the membrane, producing a concentration gradient.

conformational changes occur within the membrane proteins.

Part 6

The transfer of hydrogen ions across the membrane generates a potential energy gradient.

True/False

BIOL 3332 Lecture Notes - Lecture 21: Atp Synthase, Oxidative Phosphorylation, Citric Acid Cycle

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