- Description
SCI 220 Week 2 WileyPLUS Weekly Exam
In this graded assignment, you are assessed on the content covered in this weeks’ readings, activities, and assignments. To help you prepare, it is recommended that you first complete this week’s Learning Path and Self-Test Learning Activities prior to completing this exam.
Click on the Assignments link in WileyPLUS to access the Week 2 Exam.
Complete the Week 2 Exam covering this week’s assigned readings listed below:
- Ch. 4: Carbohydrates: Sugars, Starches, and Fibers
- Ch. 5: Lipids, Fats, Phospholipids, and Sterols
- Ch. 6: Proteins and Amino Acids
Note. Work submitted in WileyPLUS does not count toward attendance. Be sure to post at least two times each week in the online classrom to avoid being auto-dropped from the course.
Test Bank, Question 33
Your answer is correct. | |
Which of the following conclusions can be accurately drawn from the results depicted in this visual?
Following a high-fiber diet increases transit time. |
Following a low-fiber diet decreases transit time. |
Following a low-fiber diet adds weight to the weight. |
Stool weights are greater and transit times are shorter for Ugandan villagers. |
Test Bank, Question 64
Your answer is correct. | |
_____fiber lowers blood cholesterol levels.
Insoluble |
Indigestible |
Refined |
Soluble |
Test Bank, Question 36
Your answer is correct. | |
Line B shows the glycemic response after eating potatoes. Which of the following foods is most likely to cause a glycemic response similar to that shown in line B?
Dinner roll |
Peanut butter |
Egg |
Cheddar cheese |
Pre-Lecture, Question 19
Your answer is correct. | |
Positive nitrogen balance:
occurs when more nitrogen is excreted than consumed |
indicates that the body is losing weight |
occurs when the body is growing |
does not exist since nitrogen intake always equals nitrogen output |
Test Bank, Question 66
Your answer is correct. | |
A high fiber diet may help:
normalize blood glucose levels. |
reduce the incidence of hemorrhoids. |
with weight loss. |
all of these choices |
Test Bank, Question 68
Your answer is correct. | |
All of the following statements are true about the typical US diet and carbohydrate recommendations EXCEPT:
Adults typically eat the recommended amount of fiber. |
Most adults meet the recommendations for the amount of carbohydrate they should have each day. |
Most of the carbohydrate in the diet comes from refined carbohydrate sources. |
The diet is higher in added sugar than is recommended. |
Test Bank, Question 51
Your answer is correct. | |
Fatty acids cannot be used to make glucose because:
they are metabolized only by anaerobic processes. |
they do not have enough energy in their molecular structure to generate glucose molecules. |
the reactions that break them down produce two-carbon molecules. |
the products of their metabolism combine too quickly to form other compounds that the body uses for energy. |
Test Bank, Question 10
Your answer is correct. | |
Which of the following statements regarding glucose is FALSE?
Glucose is the main component of starch and glycogen. |
Glucose is also called blood sugar. |
Glucose is the most common disaccharide in our diet. |
Glucose is the most important carbohydrate fuel for the human body. |
Test Bank, Question 29
Your answer is correct. | |
Which two lipoproteins deliver triglycerides to body cells?
Chylomicrons & VLDL |
HDL & LDL |
LDL & VLDL |
VLDL & HDL | ||
Test Bank, Question 12
Your answer is correct. | |
Which of the following is not a tropical oil?
Coconut oil |
Palm kernel oil |
Palm oil |
Safflower oil |
Test Bank, Question 7
Your answer is correct. | |
The majority of _______ is located in cell membranes, but is also a part of myelin, the insulating coating on nerve cells.
cholesterol |
omega-3 fatty acids |
phospholipids |
triglycerides |
Test Bank, Question 8
Your answer is correct. | |
________, when consumed in the diet, can help reduce blood cholesterol levels.
Animal fat |
Calcium |
Plant sterols |
Vitamin D |
Test Bank, Question 40
Your answer is correct. | |
________ splits fatty acids into two-carbon units that form acetyl-CoA and releases high-energy electrons.
Anaerobic metabolism |
Beta-oxidation |
Lipoprotein lipase |
The citric acid cycle | ||
Test Bank, Question 6
Your answer is correct. | |
_________ is an important component of cell membranes, forming a lipid bilayer by orienting the water-soluble portion towards the water environment.
Cholesterol |
Phospholipid |
Saturated fatty acid |
Triglyceride |
Test Bank, Question 47
Your answer is correct. | |
Research indicates that the initiation of atherosclerosis may be related to all of the following except:
elevated blood levels of glucose |
infection |
low blood pressure |
smoking |
Test Bank, Question 110
Your answer is correct. | |
If the percentage of calories from fat has declined since 1971, why are so many Americans overweight or obese?
Consumption of hidden fats has decreased. |
Consumption of whole grains has increased. |
People still aren’t drinking skim milk. |
Total calorie consumption has increase. |
Test Bank, Question 30
Your answer is correct. | |
Which lipoprotein contains the highest proportion of protein?
Chylomicron |
HDL |
LDL |
VLDL |
Test Bank, Question 14
Your answer is correct. | |
The three-dimensional shape of a protein is impacted by all of the following EXCEPT the
chemical properties of the amino acids. |
folding of the polypeptide. |
number of essential amino acids. |
order of the amino acids. |
Test Bank, Question 31
Your answer is correct. | |
Which of the following represents the correct sequence of steps that occur in protein synthesis?
translation → transcription → mRNA takes genetic code to ribosomes |
mRNA takes genetic code to ribosomes → translation → transcription |
transcription → mRNA takes genetic code to ribosomes → translation |
mRNA takes genetic code to ribosomes → transcription → translation |
Test Bank, Question 69
Your answer is correct. | |
Which of the following is the most likely responsible for the health-promoting effects (reduced incidence of obesity, high blood pressure, and some types of cancer) of vegetarian diets?
High intake of fiber |
High intake of tofu |
Low intake of sodium |
The total dietary pattern |
Test Bank, Question 32
Your answer is correct. | |
Amino acids are used to make all of the following EXCEPT
creatine. |
histamine. |
melanin. |
Vitamin D. |
Test Bank, Question 10
Your answer is correct. | |
If the diet is deficient in one or more of the _____amino acids, the body must break down existing proteins to provide the amino acids.
nonessential |
essential |
dispensable |
dipeptide |
Test Bank, Question 47
Your answer is correct. | |
As validated by evidence-based research, the major health concern with high-protein diets is
dehydration. |
kidney stone formation. |
urinary calcium excretion. |
a high intake of saturated fat and cholesterol. |
Test Bank, Question 53
Your answer is correct. | |
Which of the following is NOT a common food allergen?
Chicken |
Eggs |
Low-fat milk |
Wheat germ |
Test Bank, Question 23
Your answer is correct. | |
Review where digestive processes of protein occur. Select the letter that indicates where mechanical breakdown of protein occurs.
A |
B |
C |
D |
Test Bank, Question 68
Your answer is correct. | |
All of the following statements are true about the typical US diet and carbohydrate recommendations EXCEPT:
Adults typically eat the recommended amount of fiber. |
Most adults meet the recommendations for the amount of carbohydrate they should have each day. |
Most of the carbohydrate in the diet comes from refined carbohydrate sources. |
The diet is higher in added sugar than is recommended. |
Test Bank, Question 50
Your answer is correct. | |
When there is not sufficient carbohydrate to completely metabolize fatty acids, these molecules form:
amino acids. |
carbon dioxide. |
ketones. |
oligosaccharides. | ||
Test Bank, Question 18
Your answer is correct. | |
Which of the following is a major dietary source of soluble fiber?
Beans |
Broccoli |
Maltose |
Wheat bran |
Pre-Lecture, Question 19
Your answer is correct. | |
Positive nitrogen balance:
occurs when more nitrogen is excreted than consumed |
indicates that the body is losing weight |
occurs when the body is growing |
does not exist since nitrogen intake always equals nitrogen output |
Test Bank, Question 21
Your answer is correct. | |
Which type of complex carbohydrates are depicted in the visual?
Insoluble fiber |
Starch |
Soluble fiber |
Starch and Soluble fiber |
Test Bank, Question 29
Which of the following statements regarding the incidence of lactose intolerance is correct?
Native Alaskans have the lowest incidence of lactose intolerance. |
This map illustrates the dramatic variation in the incidence of lactose intolerance worldwide. |
Different races and ethnicities have varying rates of incidence of lactose intolerance. |
Those living in South America have the lower incidence of lactose intolerance than those living in southern Africa. |
Test Bank, Question 56
Your answer is correct. | |
Your friend Jason has diabetes and developed hypoglycemia. Of the following situations, which is the most likely reason why he developed hypoglycemia?
He ate too much refined carbohydrate. |
He drank too much water. |
He took too much of his medication that is used to control his blood sugar. |
It was probably warm outside and he sweat excessively. |
Test Bank, Question 64
Your answer is correct. | |
_____fiber lowers blood cholesterol levels.
Insoluble |
Indigestible |
Refined |
Soluble |
Test Bank, Question 29
Your answer is correct. | |
Which two lipoproteins deliver triglycerides to body cells?
Chylomicrons & VLDL |
HDL & LDL |
LDL & VLDL |
VLDL & HDL |
Test Bank, Question 119
Your answer is correct. | |
One egg contains __ % of the daily recommendation for cholesterol intake.
20 |
200 |
67 |
50 |
Test Bank, Question 121
Your answer is correct. | |
Which of the following foods is lowest in saturated fat?
Whole milk |
Bacon |
Cheddar cheese |
Eggs |
Test Bank, Question 28
Your answer is correct. | |
The remains of chylomicrons:
are converted into glycerol |
bind to an LDL receptor |
consist mostly of free fatty acids |
travel to the liver to be disassembled |
Test Bank, Question 5
Your answer is correct. | |
The lipid that makes up most of the lipids in our body is:
cholesterol |
lecithin |
phospholipid |
triglyceride |
Test Bank, Question 12
Your answer is correct. | |
Which of the following is not a tropical oil?
Coconut oil |
Palm kernel oil |
Palm oil |
Safflower oil |
Test Bank, Question 20
Your answer is correct. | |
After long-chain fatty acids have been absorbed into the mucosal cells, they are re-assembled into:
cholesterol |
fat-soluble vitamins |
micelles |
triglycerides |
Test Bank, Question 118
Your answer is correct. | |
When weight is gained, how does it affect the tissue cells that are illustrated in this micrograph?
Photo credits: (left) Karen Kasmauski/NG Image Collection, (right) Ed Reschke/Peter Arnold, Inc.
The triglyceride droplets enlarge in size. |
The triglyceride droplets increase in number. |
The triglyceride droplets remain unchanged. |
The triglyceride droplets shrink in size. |
Test Bank, Question 25
Your answer is correct. | |
Since chylomicrons are too large to enter the capillaries in the small intestine, they pass into the:
gallbladder |
large intestine |
lymph |
stomach |
Test Bank, Question 53
Your answer is correct. | |
Which of the following is NOT a common food allergen?
Chicken |
Eggs |
Low-fat milk |
Wheat germ |
Test Bank, Question 69
Your answer is correct. | |
Which of the following is the most likely responsible for the health-promoting effects (reduced incidence of obesity, high blood pressure, and some types of cancer) of vegetarian diets?
High intake of fiber |
High intake of tofu |
Low intake of sodium |
The total dietary pattern |
Test Bank, Question 42
Your answer is correct. | |
Marasmus is a form of malnutrition that negatively impacts which of the following developing organs the worst?
The brain |
The liver |
The kidneys |
The teeth |
Test Bank, Question 19
Your answer is correct. | |
_________ , an enzyme, is produced in the stomach and breaks some of the peptide bonds in polypeptide chains.
Amylase |
Denaturase |
Dipeptidase |
Pepsin | ||
Test Bank, Question 45
Your answer is correct. | |
Why is protein-energy malnutrition more common in children than adults?
The child’s stomach cannot digest protein from the diet. |
Adults eat protein sources from the diet that have a higher absorption rate. |
Because children are growing, their protein needs per unit body weight are higher. |
Children do not eat enough total calories so that protein must be used as an energy source. |
Test Bank, Question 14
Your answer is correct. | |
The three-dimensional shape of a protein is impacted by all of the following EXCEPT the
chemical properties of the amino acids. |
folding of the polypeptide. |
number of essential amino acids. |
order of the amino acids. |
Test Bank, Question 24
Review where digestive processes of protein occur. Select the letter that indicates where protein-digesting enzymes are released from this organ, which aids brush border enzymes to breakdown protein.
A |
B |
C |
D |
Test Bank, Question 10
Your answer is correct. | |
If the diet is deficient in one or more of the _____amino acids, the body must break down existing proteins to provide the amino acids.
nonessential |
essential |
dispensable |
dipeptide |
Which of the following represents a monosaccharide:disaccharide:complex carbohydrate?
fructose:galactose:soluble fiber |
glucose:maltose:lactose |
glucose:sucrose:insoluble fiber |
sucrose:lactose:galactose |
Starch and dietary fiber are classified as:
complex carbohydrates. |
monosaccharides. |
refined sugars. |
simple sugars. |
_____ cannot be digested by human digestive enzymes.
Fiber |
Glycogen |
Maltose |
Starch |
Most starch digestion and breakdown of disaccharides occurs in which section of the GI tract?
A |
B |
C |
D |
In regard to the development of atherosclerosis, which of the following represent the correct sequence of events?
Macrophages form ―> secreted chemicals promote an inflammatory process ―> LDLs migrate to artery wall |
Secreted chemicals promote an inflammatory process ―> macrophages form ―> LDLs migrate to artery wall |
Macrophages form ―> LDLs migrate to artery wall ―> secreted chemicals promote an inflammatory process |
LDLs migrate to artery wall ―> macrophages form ―> secreted chemicals promote an inflammatory process |
Lipoprotein lipase breaks down the triglycerides in chylomicrons into:
amino acids |
cholesterol and fatty acids |
glucose |
glycerol |
fatty acids and glycerol |
Based on the information presented in the graph, which food is highest in polyunsaturated fatty acid?
Coconut oil |
Olive oil |
Salmon |
Sunflower oil |
Examples of unsaturated fatty acids include:
coconut oil |
corn oil |
palm oil |
plant sterols |
Which of the following is not a function of lipids in the body?
Absorption of water-soluble vitamins |
Insulation from changes in temperature |
Source of energy |
Structural component of cell membranes |
Based on the type of fat found in the following foods, which would be the healthiest choice for lunch from the fruit group?
Apple fritter |
Fried banana fruit kebab |
Cherry pie with low-fat vanilla ice cream |
Avocado slices, olive oil, and balsamic vinegar |
HDLs:
contain a high proportion of cholesterol. |
function similarly to chylomicrons, transports lipids away from the liver. |
return cholesterol from other lipoproteins and body cells to the liver. |
are formed in the mucosal cell. |
Which lipoprotein has the highest proportion of triglyceride?
Chylomicron |
HDL |
LDL |
VLDL |
Kyle had a brother who exhibited heart disease at age 62 and a sister who exhibited heart disease at age 64. Based on the age at which his brother and his sister exhibited heart disease, is Kyle considered to have a family history of heart disease?
Yes, based on the age of his brother only |
Yes, based on the age of his sister only |
Yes, based on the ages of both his sister and brother |
No, based on the ages of both his sister and brother |
Someone whose nitrogen output is greater than their nitrogen intake is said to be in
nitrogen balance |
positive nitrogen balance |
negative nitrogen balance |
There is insufficient information provided to determine the status. |
Which of the following symptoms is characteristic of kwashiorkor?
Decreases in intelligence and learning ability |
Energy deficiency |
Muscle wasting |
Swollen belly |
Which of the following scenarios is a possibility if an amino acid supplement overwhelms the amino acid transport system?
The amino acids from the supplement will use an alternate transport system. |
The amino acids from the supplement will be eliminated from the body. |
The amino acids from the supplement will compete with each other, increasing absorption of other amino acids. |
The amino acids from the supplement will compete with each other, slowing absorption of other amino acids. |
In general, plant sources of protein provide _____absorbable forms of iron, zinc, and calcium as compared to animal protein sources.
less |
equally |
more |
As validated by evidence-based research, the major health concern with high-protein diets is
dehydration. |
kidney stone formation. |
urinary calcium excretion. |
a high intake of saturated fat and cholesterol. |