Which statement is true?

Lipids are a type of fat.

Fats are a type of lipid.

Fats and lipids are unrelated.

All lipids are fats, and all fats are lipids.

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Which fat is most likely a solid at room temperature?

one that is saturated

one that is unsaturated

one with double bonds

one that contains no hydrogen

Where is most of a healthy person’s fat stored?

under the skin and around organs

in muscle tissue and cartilage

inside organs and skin cells

in the stomach and liver

Which is one function of steroids?

waterproofing leaves and feathers

insulating and protecting bones and organs

serving as chemical messengers

providing energy storage

The diagram shows the general structure of a lipid, which consists of two main parts.Which part is circled?

alcohol group

fatty acid

carboxyl group

unsaturated lipid

If the last carbon atom of an unsaturated fatty acid is bonded to two hydrogen atoms and one carbon atom, what type of bond must exist between the last carbon and the other carbon atom?

single

double

triple

quadruple

Lipids exhibit different characteristics based on their structures. The image shows different examples of lipids, such as solid butter and liquid canola oil.Photo by NIH/Bill BransonWhich type of bond is found in many carbon-to-carbon bonds in canola oil, but very few carbon-to-carbon bonds in butter?

C–C

C=C

C=H

C–H

Which fat has only single bonds between the carbon atoms in the fatty acid?

saturated

unsaturated

polyunsaturated

monounsaturated

In an oil spill, why does the oil not mix with the seawater?

Lipids are hydrophobic.

Lipids are hydrophilic.

Lipids are saturated.

Lipids are unsaturated.

Which describes the basic structure of a fatty acid?

a long carbon and hydrogen chain and a phosphate group

a long carbon and hydrogen chain and a glycerol

a long carbon and hydrogen chain and a carboxyl group

a long carbon and hydrogen chain and an alcohol

Lipids Answers

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