Question 1

We need to consume only about 5% of our total calories per day from essential fatty acids. This corresponds to about _____________________ of plant oil each day.

Accepted Answer

The answer of We need to consume only about 5%...

Question 2

Match the following with the descriptions below

Accepted Answer

The answer of Match the following with the descriptions below
...

Question 3

The omega-6 parent fat, linoleic acid, is converted by the body into the long-chain fatty acid,

Accepted Answer

Linoleic acid is converted by the body into arachidonic acid.

Question 4

An omega-9 fatty acid has its first double bond starting at the ninth carbon from the ____________ .

Accepted Answer

Omega numbering system starts from the methyl end of a fatty acid chain. Therefore, an omega-9 fatty acid has its first double bond starting at the ninth carbon from the methyl end.

Question 5

Consumption of fatty fish at least twice a week is recommended to provide omega-3 fatty acids. However, some fish - especially swordfish, shark, king mackerel, and tile fish - can be a source of ____________, which is toxic in high amounts.

Accepted Answer

The consumption of fish containing high levels of mercury such as swordfish, shark, king mackerel, and tile fish should be limited to no more than once a month, especially for pregnant women, nursing mothers, and young children, due to the risk of mercury poisoning. Other fatty fish such as salmon, sardines, and trout are safer options as they contain lower levels of mercury and higher levels of omega-3s.

Question 6

The main problem with the fat replacer olestra is that it can bind ________________________________________.

Accepted Answer

Olestra is known to bind to fat-soluble vitamins such as vitamin A, D, E and K, thereby reducing their absorption. This can lead to deficiencies of these vitamins in the body if the consumption of olestra is too high.

Question 7

____________ are lipid-loaded white blood cells that have surrounded large amounts of a fatty substance, usually cholesterol, on the blood vessel walls.

Accepted Answer

Foam cells are lipid-loaded white blood cells that have surrounded large amounts of a fatty substance, usually cholesterol, on the blood vessel walls. Lymphocytes and neutrophils are not specifically associated with the formation of foam cells. Liposomes are synthetic vesicles used in drug delivery and not related to foam cells.

Quiz 5: Lipids