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Food Science Exam 4
Possible test questions...
50
Nutrition
Undergraduate 1
11/11/2015

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Cards

Term

The pigment associated with the red color of fresh meats is...

Chlorophyll, Deoxymyoglobin, Metmyoglobin, Nitrosylhemochrome, Oxymyoglobin

Definition
Oxymyoglobin
Term

Which of the following is an example of an exempt food colorant derived from insects?

Annatto, Cochineal, Caramel Coloring, Paprika Extract, All of the Above

Definition
Cochineal
Term

The energy value of alcohol is 9kcal/g

True or False 

Definition
False
Term

Food microbiology is the systematic evaluation and understanding of water, carbohydrates, lipids, proteins, vitamins, minerals, and other ingredients, such as food additives as they undergo chemical interaction/reaction during harvest, storage, and distribution of foods.

True or False 

Definition
False
Term

which of the following is not an example of a plant-based chemical? 

Chlorophyll, Anthocyanin, Glycogen, Amygdaline, Starch

Definition
Glycogen
Term

The deficiency disease associated with a lack of proper levels of iron is..

Anemia, Scurvy, Osteoporosis, Goiter, None of the Above

Definition
Anemia
Term

Which of the following is not an example of crop biotechnology? 

Flavr Savr tomatoes, Glowing tobacco plant, Genetically modified Atlantic salmon, Golden rice, Genetically modified sweet corn

Definition
Genetically modified Atlantic salmon
Term

An example of protozoa that could contaminate irrigated food crops is... 

Salmonella enterididis, Listeria monocytogenes, Giardia lamblia, Trichinella spiralis, Saccharomyces cerevisiae

Definition
Giardia lamblia
Term

Which of the following statements is false?

Lipoproteins are water soluble substances that ransport fat and cholesterol in the blood

 

Very-low-density lipoproteins carry cholesterol and triglycerides from the liver to the body.

 

High-density lipoproteins carry cholesterol back to the liver. 

 

Lipoproteins should be the main source of calories i the diet in order to emulsify the contents of the intestine and increase absorption of essential nutrients. 

 

Low-density lipoproteins carry cholesterol from the liver to body cells. 

 

 

Definition

Lipoproteins should be the main source of calories i the diet in order to emulsify the contents of the intestine and increase absorption of essential nutrients. 

 
Term

The microorganisms that are most likely for favor growing in a refrigerator are... 

Thermophiles, thermotrophs, mesophiles, anarobic, psychrophiles

Definition
psychrophiles
Term

Which of the following is false?

Common pathogenic bacteria genera include Enterobacter, Lactobacillus, Pediococcus, and Psuedomonas.

 

Spoliage micobes produce undesired sensory changes in foods. 

 

Shelf life estimations are calculated from stability tests conducted under controlled conditions. 

 

Most outbreaks of food borne illness have similar causes such as inadequate cooking or improper storage temperature. 

 

An intoxication is a form of food borne illness caused by ingesting food that already contains the microbial toxin. 

Definition

Common pathogenic bacteria genera include Enterobacter, Lactobacillus, Pediococcus, and Psuedomonas.

 
Term

A chemical reaction of lipids that includes the breakdown of triglycerides into glycerol and fatty acids is called..

fractionation, interesterification, polymerization, hydrolysis, hydrogenation

Definition
hydrolysis
Term

Combining DNA molecules from different sources into one molecule in a test tube is an example of..

Cross breeding, Hybridizing, Cloning, Recombinant DNA technology, Star-linking

Definition
Recombinant DNA technology
Term

Microorganisms that tolorate a high concentration of salt in foods are called halophilic. 

True or False

Definition
True
Term

The state in a microbial growth curve wehre there is rapid growth becaues many new cells are being created is called the log phase.

True or False?

Definition
True
Term

The use of various scientific techniques to produce specific desired traits in plants, animals or microoganisms through the use of gentetic knowledge is called...

Cloning, food engineering, food processing, food biotechnology, all of the above

Definition
food biotechnology
Term

Growth depends on having protein synthesis and protein synthesis relies on the plymerization of which nutrient obtained in the diet?

Glucose unites, Glycerol, Amino acids, Fatty acids, Calories

Definition
Amino acids
Term

Which category tends to be highest in fat, minerals, and balanced proteins? 

Animal products, Fruits, Vegetables, Grains, Oils

Definition
Animal products
Term

The degree to which nutrients are digested and absorbed is..

Food chemistry, Enzymes, Emulsification, Nutritional deficiency, Bioavailability

Definition
Bioavailability
Term

Proteins are polymers of amino acids and every protein has an acid end and an amino end. 

True or False? 

 

Definition
True
Term

Which of the following statements is not true? 

Lipids with short chain fatty acids or unsaturated fatty acids tend to be liquid at room temperature.

 

Anorexia and bullimia are digestive disorders caused by poor absorption of nutrients.

 

Oils may provide essential fatty acids and are needed for absorption of fat-soluble vitamins.

 

Lipids with long chain fatty acids or saturated fatty acids tend to be solid at room temperature.

 

Excessive consumption of alcohol may lead to weight gain and impaired moter skills. 

 

 

Definition
Anorexia and bullimia are digestive disorders caused by poor absorption of nutrients.
Term

Which of the following is false? 

StarLink is a genetically modified corn developed by Aventis that contained an insecticidal protein derived from a bacterium that may or may not be a human allerge.

 

GMO foods may be identified by using detection methods such as monoclonal antibody tests or DNA probes. 

 

The U.S. is the leading country growing biotech crops with soybeans as the most widely planted crop.

 

The FDA requires all foods with GMO ingredients to be labeled because GMO ingredients are already found in 5% of conventionally processed foods. 

 

Drought resistance is an example of an enhanced input trait that may be obtained through crop biotechnology. 

Definition
The FDA requires all foods with GMO ingredients to be labeled because GMO ingredients are already found in 5% of conventionally processed foods. 
Term

Which of the following pigment categories contains a porphyrin ring with Mg (magnesium) at its center? 

Chlorophylls, Betalains, Carotenoids, Myoglobins, Anthocyanins

Definition
Chlorophylls
Term

A biological process in which microorganisms induce a series of chemical reactions leading to food preservation is also called absorption. 

True or False?

Definition
False
Term

In the trans configuration of a fatty acid, the hydrogen (H) atoms are bonded in which postion?

On the opposite side of the C=C 

Only in the omega 3 or 6 location

On the same side of the C=C

Next ot the phosphate group

Between every hydroxly group

Definition
On the opposite side of the C=C 
Term

The type of structure that describes the three-eimensional shape of a protein molecule is called the secondary structure. 

True or False?

 

Definition
False
Term

Milk is...

Noted for containing less sugar and more starch than vegetables.

 

A good source of essential dietary fiber and vegetable gum stabilizers.

 

High in calcium, protein, potassium, and vitamin D

 

Liquid at room temperature because it has a higher level of unsaturated fat than corn oil.

 

The richest source of protein, B-vitamins, iron, zinc, and cholesterol in the average diet.

Definition
High in calcium, protein, potassium, and vitamin D
Term

Sucrose, lactose, fructose and maltose are examples of..

pH control agents, Stabilizers and thickeneres, emulsifiers, sweeteners, humectants

Definition
sweeteners
Term

Foods with a natural pH less than 4.6 and a water activity of 0.85 or more are called acidified foods.

True or False?

Definition
False
Term

The most beneficial microorganism for fermentation in the making of bread, wine, cider or beer is...

Leuconostoc mesenteroides, Pediococcus cerevisiae, Rhizopus stolinifer, Listeria monocytogens, Saccharomyces cerevisiae

Definition
Saccharomyces cerevisiae
Term

A pair of organisms that may be used together as the starter culture for pepperoni is...

Pediococcus cerevisiae and Micrococcus varians

Lactobacillus delbrueckii and Streptoccus salivarius

Leuconostoc mesenteroides and Pediococcus cerevisiae

Saccharomyces cerevisiae and Pseudomonas flourescens

Giardia lamblia and Trichinella spiralis

 

Definition
Pediococcus cerevisiae and Micrococcus varians
Term

Excessive consumption of alcholic beverages may result in weight gain becaues ethanol provides 7kcal/gram, which is more than the 4kcal/gram provided by either starch or sugar.

True or False?

Definition
True
Term

Beneficial microbes are used for manufacture of many food products. Examples include all of the following except...

yogurt, bread, beer, fermented sausage, canned fruit

Definition
canned fruit
Term

This term refers to delivery of nutrients and oxygen to all of the body's cells by the vascular system. 

transport, polymerization, hydrolysis, absorption, digerstion

Definition
Transport
Term

Which of the following is considered to be an example of a common pathogenic microoganism? 

Psuedomonas florescens, Campylobacter jejuni, Bacillus stearothemophilus, Lactobacillus plantarum, Lactobacills brevis

Definition
Campylobacter jejuni
Term

Which of the following is a measure of the availability of water molecules in a food? 

Relative humidity, moisture content, water holding capacity, water vapor pressure, water activity

Definition
Water activity
Term

Which of the following is not a fat soluble vitamin?

Vitamin A, Vitamin D, Vitamin E, Vitamin C, Vitamin K

Definition
Vitamin C
Term

Which of the following is not considered a benefit of food biotechnology?

providing new products of better quality

decreasing food safety

improving food safety

improving nutritional value

lowering costs

Definition
decreasing food safety
Term

The type of bacteria that can survive heat treatment and can cause spoliage of pasteurized products are most likely to be...

Viruses, Aciduric, Thermophillic, Halophillic, Psychotrophic

Definition
thermophillic
Term

Which of the following is true about the recommended intake for proteins? 

People should avoid consuming proteins because they are not healthy for people. 

 

The recommended daily intake for proteins is 10-15% of daily caloric intake per day.

 

The recommended daily intake for proteins is at least 55-75% of body mass index.

 

Proteins must be consumed iwth partially hydrogenated fats on a daily basis to ensure proper transport and absorption of cholesterol. 

 

All of the above are ture.

Definition

The recommended daily intake for proteins is 10-15% of daily caloric intake per day.

 
Term

Which of the following is not considered to be an example of digestive disorder?

Constipation, Digestion, Acid reflux, Irritable bowel syndrome, Ulcers

Definition
Digestion
Term

Which of the following is true?

Essential fatty acids are required in the diet for absorption of fat-soluble vitamins. 

 

At least 55-75% of calories in a normal diet should be obtained from lipid sources. 

 

Triglycerides are made from a fatty acid backbone with three glycerol molecules attached. 

 

Fat replacers from protein or carbohydrate sources do not contribute calories to food products.

 

Lipids are primarily composed of polar groups to make them soluble in water and that's why they are called hydrophilic. 

Definition
Essential fatty acids are required in the diet for absorption of fat-soluble vitamins. 
Term

The major biotech crops grown worldwide include all of the following except...

Soybeans, Corn, Cotton, Canola, Coffee

Definition
Coffee
Term

The dispersion of two immiscible liquids is call an emulsion.

True or False

Definition
True
Term

The study of physiology, genetics, growth characteristics, survival and behavior of microbes is...

Food science, Food virology, Food engineering, Food microbiology, Food chemistry

Definition
Food microbiology
Term

Which of the following is false?

Digestion is a metabolic process to extract nutrients from foods. 

 

The process of degrading large molecules to smaller ones is called catabolism.

 

The process of degrading large molecules to smaller ones is called anabolism. 

 

Hydrolysis is a chemical reaction to break down lipids, carbohydrates or proteins. 

 

helicobacter pylori is a bacterium associated with causing ulcers. 

Definition
The process of degrading large molecules to smaller ones is called anabolism. 
Term

The term "denaturation" refers to a process common to which of the following categories of nutrients where there is an unfolding of nutrient's structure and the disruption of covalent bonds. 

Starches, Proteins, Lipids, Carbohydrates, Minerals

Definition
Proteins
Term

The dose at which 50% of the population tested shows a response to a chemical is called the..

Lethal dose, Toxic dose, Carcinogenic dose, Harmless dose, Effective dose

Definition
Effective dose
Term

Which of the following does not provide calories in foods? 

Alcohol, Water, Lipids, Carbohdrates, Proteins

Definition
Water
Term

Which of the following is an example of an endogenous toxin associated with spouting potatoes...

Solanie

Definition
Solanie
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