Explanation:

Unlike carbohydrates and also proteins, lipids are greatly nonpolar molecules. Together a result, they room unable come be liquified in aqueous solutions, such together blood. This provides them require a lipoprotein in stimulate to it is in transported with the bloodstream. Without these proteins, lipids would certainly be insoluble in the blood and cause clots.

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Explanation:

Amphipathic molecules have actually both polar and also nonpolar sections. Because that phospholipids, the phosphate an ar carries a an adverse charge, making it polar, if the lipid tail is a nonpolar hydrocarbon. Being amphipathic is a crucial characteristic that allows phospholipids to form the plasma membrane. The polar ends are able to challenge the aqueous environment while the nonpolar end are confronted towards every other. This creates an efficient nonpolar barrier about the cell, if still remaining stable by having polar regions encountering the aqueous environments.


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Example inquiry #3 : Macromolecules


Which carbohydrate can not be digested by humans?


Possible Answers:

Starch


Amylose


Cellulose


Glycogen


Correct answer:

Cellulose


Explanation:

Cellulose is a polysaccharide in which the monomers are linked by a beta linkage. This affiliation requires a devoted enzyme that is not uncovered in human being beings. Together a result, human beings cannot failure cellulose.

Glycogen is provided to store glucose in the body, and can be damaged down to release energy. Strength is provided to keep glucose in plants, yet can additionally be broken down by humans. Amylose is a ingredient of starch.


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Example concern #4 : Macromolecules


Which that the following classes of molecules produces the most energy per gram?


Possible Answers:

Nucleic acids


Fibers


Proteins


Fats


Carbohydrates


Correct answer:

Fats


Explanation:

There are four classes of biological molecules: fats, carbohydrates, proteins, and also nucleic acids. The these, fats develop the most energy per gram at a whopping ripe calories every gram. Carbohydrates and proteins produce less than half of this, in ~ only 4 calories every gram.


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Example concern #5 : Macromolecules


Which the the following is not a kind of fat in the body?


Possible Answers:

Di-saturated fats


Unsaturated fats


Saturated fats


Trans fats


Mono-unsaturated fats


Correct answer:

Di-saturated fats


Explanation:

Lipids, or fats, are developed from hydrocarbon chains. The carbon atoms link together and also bond to hydrogen to fill their orbitals. When all the bonds in the molecule are solitary bonds, the lipid is saturated. Over there is no such point as a "di-saturated fat."

When there is a single dual bond in the chain, the lipid is mono-unsaturated. When there space multiple dual bonds in the chain, the lipid is unsaturated. Trans fats have a dual bond with the surrounding hydrogen atom on opposite political parties of the carbon chain, maintaining a direct structure.

Most fats in the body room triglycerides. Your primary function is long-term energy storage.


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Example question #6 : Macromolecules


Which of the adhering to is a carbohydrate?


Possible Answers:

Triglyceride


Helicase


Insulin


Cholesterol


Ribose


Correct answer:

Ribose


Explanation:

Carbohydrates are known as sugars or saccharides. Basically all carbohydrates finish in the suffix "-ose," make them simple to identify. Ribose is a five-carbon sugar uncovered in RNA. Part other typical carbohydrates encompass deoxyribose, glucose, cellulose, and lactose. Sucrose is the technological name that table sugar, i beg your pardon is also a carbohydrate.

The other classes that molecules space fats, proteins, and nucleic acids. Fats, or lipids, have the right to be further damaged down right into other categories, such together sterols and glycerolipids. Sterol lipids typically have the suffix "-ol" and include cholesterol and estradiol (estrogen). Glycerolipids incorporate triglycerides. Protein are formed from amino acids. Enzymes room a course of protein and also generally have actually the suffix "-ase," such together helicase. Other proteins frequently have the suffix "-in" or "-en," such together insulin.


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Example inquiry #7 : Macromolecules


Which of the complying with are true concerning lipids?


Possible Answers:

Lipids have the right to only be triglycerides


Lipids perform not save energy


Lipids are soluble in water


Lipids space hydrophilic


Lipids room soluble in nonpolar solvents


Correct answer:

Lipids are soluble in nonpolar solvents


Explanation:

Lipids space hydrophobic, which way that they are insoluble in water, a polar solvent. Lipids can store numerous energy. Lipids contain huge nonpolar regions, which method that they are soluble in nonpolar solvents. Triglycerides are just one kind of lipids. Other varieties include, yet are not restricted to: monoglycerides, diglycerides, phospholipids, and also fatty acids.

See more: 2003 Ford Focus Spark Plug Wire Diagram, 2003 Ford Focus


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Example question #8 : Macromolecules


What is the difference between saturated and unsaturated fat acids?

I. Saturated fatty acids do not contain dual bonds, unsaturated fatty acids save on computer at the very least one dual bond

II. Saturated fat acids save on computer at the very least one twin bond, unsaturated fatty acids perform not contain dual bonds

III. Saturated fatty acids save on computer the maximum amount of H atoms on your carbon skeletons

IV. Unsaturated fatty acids save on computer the maximum quantity of H atoms on their carbon skeletons


Possible Answers:

I only


I and also III


III only


II only


II and also IV


Correct answer:

I and III


Explanation:

Saturated fatty acids do not have dual bonds between carbon atoms. Therefore, the maximum lot of hydrogen atoms room bonded come the carbon skeleton chain. Saturated fatty acids space solid in ~ room temperature, favor butter. Unsaturated fatty acids have actually at lease one dual bond. These double bonds create kinks in the carbon skeleton, avoiding hydrogen atom from pack onto the skeleton. Unsaturated fatty acids room therefore an ext fluid and also are liquid at room temperature, like oil and also natural peanut butter. 


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Example inquiry #9 : Macromolecules


What is true that both lipids and fats?

I. Both room macromolecules

II. Both are hydrophobic

III. Fats are composed of glycerol and fatty acids

IV. Lipids room composed of glycerol and fatty acids

V. Fats are organized together via ester linkage


Possible Answers:

I, II, and V


I, II, IV, and also V


I, III, and IV


II, III, and also V


I and II


Correct answer:

II, III, and also V


Explanation:

Because lipids execute not include true polymers, they space not large enough to be taken into consideration macromolecules. However, prefer fats, lipids are hydrophobic. Fat are considered macromolecules and also are composed of glycerol and fatty mountain molecules. The glycerol and fatty acid molecules room joined via an ester linkage, i beg your pardon is created by a dehydration reaction.


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Example inquiry #1 : Macromolecules


What street molecule go ATP contain?


Possible Answers:

Adenosine


Adenine


Deoxyribose


Ribose


Triphosphate


Correct answer:

Ribose


Explanation:

ATP represents adenosine triphosphate. Ribose is the five-carbon sugar, i m sorry is bonded to a phosphate group and also adenine group in a molecule the ATP. 


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