WorksheetsLipids: Structure, Function, and Types Quiz
Total questions: 88
Worksheet time: 45mins
The primary functions of lipids in the body include all the following except?
They are the structural components of cell membranes.
They are the energy components of cell membranes.
They are the signaling components of cell membranes.
They are the energy structures.
They are the signaling structures.
The main type(s) of lipids include which of the following?
diacylglycerols
phospholipids
proteins
triphosphates
carbohydrates
Which of the following are solid at room temperature?
olive oil
coconut oil
butter
spreadable margarine
nonstick spray
Which of the following best describes the role of phospholipids in the body?
They are the main energy storage molecules in the body.
They are water-soluble lipids that help build protective barriers around cells.
They are the primary source of dietary fat.
They are responsible for hormone production.
Why are fats considered an efficient form of energy storage in the body?
Fats are stored with a lot of water, making them easy to break down.
Fats contain less energy per gram than carbohydrates.
Fats are densely concentrated with energy and store more than double the energy of carbohydrates per gram.
Fats are only stored in small amounts in the body.
“Saturation” means which of the following?
whether or not a fatty acid chain is filled to capacity with carbon atoms
whether or not a fatty acid chain is filled to capacity with hydrogen atoms
whether or not a fatty acid chain is filled to capacity with oxygen atoms
whether or not a fatty acid chain is filled to capacity with nitrogen atoms
whether or not a fatty acid chain is filled to capacity with chlorine atoms
A “monounsaturated fatty acid” is which of the following?
any fatty acid with two or more double bonds
any fatty acid with no double bonds
any fatty acid with only one double bond
any fatty acid with only one peptide bond
any fatty acid with two or more peptide bonds
Essential fatty acids must be obtained from where?
food
a gas station
a shopping mall
environments
made by the body
Briefly describe how plant sterols positively impact blood cholesterol levels.
They increase cholesterol absorption in the human body.
They work to inhibit cholesterol absorption by the human body.
They have no effect on cholesterol absorption.
They increase cholesterol production in the body.
Saturated fatty acids can have 1, 2, or several double bonds.
True
False
Cholesterol is the best-known sterol.
True
False
Cholesterol has many important functions in the body.
True
False
Plant products are a minimal source of cholesterol, where animal products are the primary source of cholesterol.
True
False
The structure and length of a fatty acid determines which of the following?
whether it is gas or liquid at room temperature
whether it is crystal or liquid at room temperature
whether it is solid or liquid at room temperature
whether it is solid or vapor at room temperature
Define the term “emulsifier.”
a compound that allows two repelling liquids to combine so no separation occurs
a compound that allows two like liquids to combine so no separation occurs
a compound that allows a heavy liquid and a light liquid to combine so no separation occurs
a compound that allows two repelling solids to combine so no separation occurs
a compound that allows two identical solids to combine so no separation occurs
Which of the following describes “steatorrhea”?
fats that are absorbed properly
fecal matter that contains high amount of fat
can be caused by chronic diseases
can be caused by eating processed foods
can be caused by eating vegetables
Which enzyme initiates the process of lipid digestion in the mouth?
gastric lipase
pancreatic lipase
lingual lipase
bile
What is the main function of bile in the digestion of lipids?
to break down proteins
to emulsify fats and increase their surface area
to digest carbohydrates
to neutralize stomach acid
After emulsification, what do digestive enzymes break triacylglycerols and diglycerides into?
amino acids and glucose
fatty acids and monoglycerides
cholesterol and bile salts
vitamins and minerals
Why is emulsification important in the digestion of lipids?
It decreases the surface area of lipids, making them harder to digest.
It increases the surface area of lipids, making them more accessible to digestive enzymes.
It neutralizes the acids in the stomach.
It converts lipids into proteins.
Which of the following statements about chylomicrons is true?
Chylomicrons transport lipids only in the lymph system.
Chylomicrons are formed in the gallbladder.
Chylomicrons transport fats through the body’s water-based environment.
Chylomicrons are made only of proteins.
What is the primary function of adipose tissue when energy requirements exceed available fuel?
It stores more glycogen.
It dismantles triacylglycerols and releases glycerol and fatty acids.
It produces bile.
It increases cholesterol absorption.
Which of the following is NOT a component of lipoproteins?
Triacylglycerols
Cholesterol esters
Phospholipids
Glycogen
What happens to fatty acids and glycerol after they are released from adipose tissue?
They are stored in the gallbladder.
They are broken down into tiny fragments for energy.
They are converted into bile.
They are absorbed directly into the large intestine.
Which of the following acts as an emulsifier?
lipoproteins
chylomicrons
lipase
bile
All of the above are true.
Bile is defined as which of the following?
made by the pancreas
stored in the adipose tissue
used to help digest and absorb fats
used to help digest and absorb protein
made by the kidneys
Lipoprotein is defined as which of the following?
a protein that contains a lipid
transports protein through fat tissues
transports carbohydrates through blood and lymph
a carbohydrate that contains a lipid
a protein that contains a carbohydrate
Lipoproteins are characterized by which of the following?
size
shape
height
width
length
Which of the following best describes the main function of LDLs in the body?
Carrying cholesterol and other lipids from the liver to tissues
Removing cholesterol from tissues and transporting it to the liver
Storing cholesterol in adipose tissue
Breaking down cholesterol in the stomach
What is the primary role of high-density lipoproteins (HDLs)?
Delivering cholesterol to cells
Carrying cholesterol out of the bloodstream and into the liver
Storing cholesterol in the liver
Producing cholesterol in the pancreas
What can result from a deficiency of LDL binding mechanisms in cells?
Increased cholesterol storage in adipose tissue
Low blood cholesterol levels
High quantity of cholesterol traveling in the bloodstream
Decreased cholesterol production in the liver
How do diets rich in saturated fats affect LDL receptors?
They increase the number of LDL receptors
They have no effect on LDL receptors
They prohibit the LDL receptors
They convert LDL receptors to HDL receptors
Which of the following include the major lipoproteins?
VLDL, IDL, LDL, and HDL
VLDL, VLD, LDL, and HDL
VLDL, IDL, LLL, and HDL
VLDL, IDL, LDL, and HHL
What is the recommended LDL blood level to avoid increased risk of heart disease?
Less than 100 milligrams per deciliter
Less than 200 milligrams per deciliter
Less than 50 milligrams per deciliter
Less than 300 milligrams per deciliter
Which of the following is a way to limit the consumption and absorption of saturated and trans fats?
Eat more soluble fiber
Consume more sugar
Avoid all fruits
Eat more processed foods
What is the function of high-density lipoproteins (HDL) in the body?
Carry cholesterol out of the bloodstream and into the liver
Increase cholesterol absorption in the intestines
Store cholesterol in fat cells
Convert cholesterol into glucose
Which statement about HDL is correct?
HDL reduces the risk of heart disease
HDL increases the risk of heart disease
HDL has no effect on cholesterol levels
HDL is the same as LDL
Soluble fiber has which effect on cholesterol absorption in the bloodstream?
Reduces cholesterol absorption
Increases cholesterol absorption
Has no effect on cholesterol absorption
Converts cholesterol to protein
VLDLs become IDLs by which of the following?
Lipase removes triacylglycerols from VLDL to form IDL.
Bile removes triacylglycerols from VLDL to form IDL.
Chylomicron removes triacylglycerols from VLDL to form IDL.
Phospholipids remove triacylglycerols from VLDL to form IDL.
What happens when LDLs become oxidized?
The LDL becomes unstable.
It decreases the process of plaque formation in the arteries.
It induces a reduction in inflammation.
It induces an increase in mucus formation.
How can high cholesterol levels be lowered?
Increased consumption of omega-6 fatty acids
Increased consumption of saturated fats
Reduced consumption of saturated fats and trans fats
Increased consumption of trans fats
What is the recommended adult intake for fats according to the provided guidelines?
10–15 percent of total calories, mostly from saturated fats
20–35 percent of total calories, with most fats coming from polyunsaturated and monounsaturated fats
40–50 percent of total calories, with most fats coming from trans fats
5–10 percent of total calories, with most fats coming from animal fats
Which of the following is a common source of monounsaturated fat?
Soybean oil
Trout
Almonds
Flaxseed oil
Which of the following is a common source of polyunsaturated fat?
Cashews
Extra virgin olive oil
Corn oil
Peanuts
Omega-3s are plentiful in diets of processed foods.
True
False
Linolenic acid is a good source of omega-6 fatty acids.
True
False
Omega-3 and omega-6 must be kept in balance to prevent health issues.
True
False
Omega-3 fatty acids include which of the following?
linolenic acid
FDA
USDA
LDL
Which progression of essential fatty acid use is correct?
linolenic acid, arachidonic acid, eicosanoids
linoleic acid, eicosapentaenoic acid, eicosanoids
linoleic acid, arachidonic acid, eicosanoids
linolenic acid, docosahexaenoic acid, eicosapentaenoic acid
Omega-6 fatty acids include which of the following?
linoleic acid
ARM
olive oil
EPA
DHA
Which of the following is a primary function of eicosanoids in the human body?
To provide energy for muscle contraction
To regulate inflammation and support the immune system
To store fat in adipose tissue
To transport oxygen in the blood
Which of the following foods is NOT a good source of omega-3 fatty acids?
Flaxseed oil
Olive oil
Tuna
Mackerel
What is the recommended ratio range of omega-6 to omega-3 fatty acids in the diet?
10:1 to 20:1
1:1 to 4:1
5:1 to 8:1
2:1 to 6:1
What can happen if omega-6 fatty acids are out of balance with omega-3 fatty acids in the diet?
Increased risk of vitamin deficiency
Diminished effects of omega-3 fats and increased risk of inflammation-related diseases
Improved immune function
Decreased risk of heart disease
Which of the following statements is TRUE regarding the impact of fat and cholesterol on health?
The type and amount of fat in the diet do not affect cholesterol metabolism.
The type and amount of fat in the diet profoundly affect how fat and cholesterol are metabolized.
Only cholesterol, not fat, affects blood cholesterol levels.
All fats are metabolized the same way in the body.
Which of the following is a major indicator of blood cholesterol risk?
High blood glucose
Low blood LDL and high blood HDL
High blood pressure
Low blood triglycerides
Why is saturated fat consumption considered more impactful on blood cholesterol levels than dietary cholesterol consumption?
Because saturated fat is not metabolized by the body
Because saturated fat increases LDL cholesterol more than dietary cholesterol does
Because dietary cholesterol is not absorbed
Because saturated fat is always healthy
Which dietary change is recommended to increase health benefits?
Add more saturated fats to the diet
Add unsaturated fats to an already fatty diet
Remove all fats from the diet
Increase cholesterol intake
Which of the following statements about cholesterol is FALSE?
In excess, cholesterol is not harmful if it accumulates in blood vessels.
Cholesterol can accumulate in the structures of the body’s vast network of blood vessels.
Excess cholesterol can be harmful to health.
Managing cholesterol levels is important for cardiovascular health.
How can people use fat in their diet for better health?
By eliminating all fats
By using fat as an accompaniment in their diet
By only consuming saturated fats
By avoiding all sources of omega-3s
To gain the most benefit from reducing saturated fat intake, substitute unsaturated fats for saturated and trans fats.
True
False
The food choices you make today will affect your health tomorrow.
True
False
Food cholesterol greatly impacts blood cholesterol.
True
False
Reading food labels can help you make good decisions about fat intake.
True
False
Low fat equals healthy.
True
False
The USDA dietary guidelines suggest a daily intake limit of cholesterol not to exceed ________ milligrams for healthy individuals.
300
100
500
800
The largest influence on blood cholesterol levels includes which of the following?
a mix of saturated fat and unsaturated fat
a mix of polyunsaturated fat and monounsaturated fat
a mix of saturated fat and trans fat
a mix of omega-3 and omega-6
Characteristics of monounsaturated fats include all of the following except:
they lower bad cholesterol
they raise good cholesterol
they originate from nuts, seeds, and seed oils
they are of plant origin
they don’t impact blood cholesterol
A buildup of cholesterol in the blood can lead to which of the following?
brittle blood vessels
blockage of blood flow
increased risk of heart attack and stroke
stronger blood vessels
Food cholesterol has what impact on overall blood cholesterol levels?
small
large
major
no impact
None of the above are true.
An excess of dietary fat consumption can lead to which of the following?
heart valve improvement
regular heart beat
obesity
underweight
reduction of heart murmurs
Increased levels of lipids, triacylglycerols, and cholesterol in the blood are called which of the following?
hyperlipidol
lipoprotein
hyperlipidemia
hypolipidol
hypolipidemia
Which type of fat is found in large amounts in foods of animal origin and should be limited within the diet?
Polyunsaturated fats
Monounsaturated fats
Saturated fats
Trans fats
What is a benefit of polyunsaturated fats?
They increase bad cholesterol
They lower good cholesterol
They lower bad cholesterol and also lower good cholesterol
They should be consumed in excess
Monounsaturated fats are primarily found in which of the following?
Animal products
Most nuts, seeds, seed oils, olive oil, canola oil, and legumes
Dairy products
Processed foods
Which of the following is a recommended way to decrease the risk of disease associated with excess fat consumption?
Eat more processed foods
Avoid physical activity
Choose whole-grain and high-fiber foods
Increase saturated fat intake
What is the Adequate Intake value for fiber per 1,000 kilocalories, according to the AHA?
5 grams
10 grams
14 grams
20 grams
Which of the following is NOT a benefit of regular physical activity in relation to fat consumption?
Helps manage or prevent high blood pressure
Increases blood cholesterol levels
Improves overall health
Reduces cardiovascular risk
Which of the following is a benefit of consuming omega-3 fats every day?
Increases risk of heart disease
Increases optimal health and disease prevention
Raises cholesterol levels
Promotes weight gain
What is the recommended limit for saturated fat intake as a percentage of total dietary calories?
25 percent
15 percent
10 percent
5 percent
Which of the following is an example of a healthier fat that can be used in cooking?
Butter
Lard
Sesame oil
Margarine
Why is it important to replace saturated and trans fats with healthier fats in the diet?
It increases disease risk
It reduces disease risk and improves overall health
It decreases oxygenation in the body
It raises cholesterol levels
Explain how limiting cholesterol-rich foods can impact health.
It increases blood cholesterol
It reduces blood cholesterol and supports disease prevention
It has no effect on cholesterol levels
It causes weight gain
A person wants to improve their heart and blood vessel function. Which dietary change would be most effective based on the information provided?
Increase intake of saturated fats
Replace saturated and trans fats with unsaturated fats like sesame oil and peanut butter
Eat more cholesterol-rich foods
Avoid all types of fats
This image is an example of a phospholipid. Which part of a phospholipid is HYDROPHOBIC?
the phosphate "head"
the lipid "tails"
View Figure 4 (if not visible)
