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NSC 170C1 Exam 3 with Correct Answers 2024 New Update

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NSC 170C1 Exam 3 with Correct Answers 2024 New Update Lifestyle Factors the Increase Risk of Cancer - Answer-Red meats Smoked, cured, salted, chemically preserved meats Alcohol enhance carcinogens in tobacco High salt consumption damages stomach lining → stomach cancer Phytochemicals - An...

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  • August 24, 2024
  • 14
  • 2024/2025
  • Exam (elaborations)
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NSC 170C1 Exam 3 with Correct
Answers 2024 New Update

Lifestyle Factors the Increase Risk of Cancer - Answer-Red meats
Smoked, cured, salted, chemically preserved meats
Alcohol enhance carcinogens in tobacco
High salt consumption damages stomach lining → stomach cancer

Phytochemicals - Answer-Naturally occurring plant chemicals thought to support health.
Found in fruits, veggies, beans, some whole grains

Phytochemicals: Benefits - Answer-Imitate actions of natural hormones
Protect cells against chemical reactions that lead to cancer
Prevent carcinogen formation + block action

Supplements - Answer-Products containing nutrients, botanical, amino acids, or
enzymes intended to supplement the diet
Not intended to substitute for food or meals

Functional Foods - Answer-A food that has a positive effect on health beyond providing
basic nutrients

People who might benefit from supplements - Answer-Pregnant/lactating women
Elderly (Vit. B12 + Ca)
People w/inadequate sun exposure (Vit. D)
Low kcal diets
Vegetarians
Food allergies, lactose intolerance
Alcohol abuse
Medical conditions
Medications that increase needs for certain vitamins

Supplements: Regulation - Answer-FDA regulations less strictly then drugs
DSHEA shifted responsibility for assessing quality, effectiveness, and safety of
supplements from FDA to supplement manufacturers
No approval needed unless new ingredient that hadn't been used before 1994
FDA cannot remove from marketplace unless proven unsafe/harmful

USP - Answer-Companies use USP voluntarily for consumer confidence
Test supplements to ensure that they: contain ingredients in amount stated; dissolve in
body in reasonable amount of time for proper absorption; free of contaminants;
manufactured using safe/sanitary procedures

, Consumer and Supplements - Answer-FDA has strict guidelines for claims appearing on
supplement labels, such as "high-potency" - must have 100% of RDA of at least 2/3
micronutrients in supplement
FDA requires that certain info appears on labels: clearly identify content, list of all
ingredients, supplements facts panel

Functional Foods: Benefits - Answer-Economic way to help treat chronic disease
Probiotics can help lactose intolerant people to digest dairy products, positively affect
immune system, relieve allergies, and reduce inflammation in intestinal tract

Vitamins - Answer-Tasteless, organic compounds needed by body in small amounts for
growth
There are vitamins: most from food; vitamin D+K, niacin, niotin can also be synthesized
in body or microorganisms in intestinal tract

Fat Soluble Vitamins - Answer-Requires fat to be properly absorbed
Vitamins A,D,E, and K
Absorption occurs in small intestines

Water Soluble Vitamins - Answer-Absorbed in water and enter bloodstream directly
Important to absorb everyday
B vitamins and vitamin C

Antioxidant Vitamins Definition - Answer-Substance that neutralize free radicals, which
can cause cell damage
This is the body's natural defense against free radicals

Antioxidant Vitamins - Answer-Compounds include vitamins E and C, the mineral
selenium, vitamin A and beta-carotene

Factors that can destroy vitamins - Answer-Vitamins can be destroyed by air, water, and
heat

How to prevent destruction of vitamins - Answer-Don't expose produce to air
A little water is enough
Reduce cooking time
Keep food cool

Vitamin A: Major Functions - Answer-Fat soluble vitamin
Essential for healthy eyes; component of 2 light-sensitive proteins found in the retina
Affects cell differentiation, reproduction, and immunity by initiating gene expression

Vitamin A: Food Sources * - Answer-organ meats (liver), milk, cereals, cheese, and
eggs
carotenoids (carrots, spinach, and sweet potatoes)

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