Red blood cells tend to have a high fraction of saturated fats. In cells with a high fraction of saturated fats in the membrane, what would you expect the impact would be on how quickly oxygen moves into the cell?

A. Oxygen will move more quickly than if there was a high fraction of unsaturated fats.

B. Oxygen will move more slowly than if there was a high faction of unsaturated fats.

C. Oxygen will move at the same rate, regardless of the membrane composition.

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Jarrod RobelLv2

28 Jun 2018

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Related questions

1. Fats have ( Higher/lower) melting points than oils so they tend to be (liqud/soild) at room temperature. This is because they have (more/less) efficient packing than oils do, as a result of being mostly (saturated fat/unsaturated fats)

2. White meat contains (less/more) myoglobin than red meat, Red meat contains more (slow/twitch) muscles than white meat does.

3. A bag composed of a semi-permeable membrane containing 1% salt water is placed into a cup with 10% salt water (a higher concentration of salt). Through osmosis, water will move ( out of/into) the bad and the bad will (expand/shrink)

4. A surfactant (reduces/increases) the surface tension of water and tends to (promote/inhibit) emulsification.

5. Which grade of eggs is the thickest white and has the roundest and most upstanding yolk?

1.A 2. B 3. AA 4.BB

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.