Biochem - minerals

Beschreibung

biochem Quiz am Biochem - minerals, erstellt von Alannah McDonnell am 17/03/2018.
Alannah McDonnell
Quiz von Alannah McDonnell, aktualisiert more than 1 year ago
Alannah McDonnell
Erstellt von Alannah McDonnell vor etwa 6 Jahre
187
2

Zusammenfassung der Ressource

Frage 1

Frage
What are minerals?
Antworten
  • Inorganic elements
  • Organic elements
  • Proteins
  • Substrates found most often in processed foods

Frage 2

Frage
How are major minerals defined?
Antworten
  • Inorganic materials
  • Organic materials
  • >100mg per day needed
  • <100mg per day needed

Frage 3

Frage
How are trace minerals defined
Antworten
  • Less than 100mg per day needed
  • More than 100mg per day needed
  • Inorganic materials
  • Organic materials

Frage 4

Frage
What do many minerals serve as?
Antworten
  • Cofactors essential for enzyme activity
  • Enzymes essential for cofactors activity
  • Nutrients
  • Protein carriers

Frage 5

Frage
Which of these are not trace elements
Antworten
  • Iron
  • Copper
  • Zinc
  • Sodium
  • Potassium

Frage 6

Frage
Which of these are not trace elements?
Antworten
  • Fluoride
  • Manganese
  • Molybdenum
  • Chloride
  • Calcium
  • Phosphorus

Frage 7

Frage
Which of these are not trace elements?
Antworten
  • Selenium
  • Iodine
  • Chromium
  • Magnesium
  • Sulphur

Frage 8

Frage
Which of these are electrolytes?
Antworten
  • Sodium
  • Potassium
  • Chloride
  • Fluoride
  • Magnesium

Frage 9

Frage
What are electrolytes essential for?
Antworten
  • Nerve conduction
  • Muscle contraction
  • Muscle relaxation
  • Lipid transport
  • Nerve suppressant

Frage 10

Frage
What does balancing electrolytes do?
Antworten
  • Helps balance body fluids
  • Makes body fluids irregular
  • Limits lipid movement
  • Limits loss of water

Frage 11

Frage
What is the modern diet?
Antworten
  • High in Na low in K
  • High in K low in Na
  • Equal amounts of K and Na
  • Varying amounts of K and Na

Frage 12

Frage
Diets high in what may lower the risk of hyper tension?
Antworten
  • Potassium
  • Calcium
  • Magnesium
  • Sodium
  • Fluoride

Frage 13

Frage
How is calcium absorbed in the digestive tract?
Antworten
  • Active transport
  • Passive transport

Frage 14

Frage
What is the bioavailability of calcium decreased by?
Antworten
  • Tannins
  • Fiber
  • Phytates
  • Oxalates

Frage 15

Frage
What does calcium have a vital role in?
Antworten
  • Nerve transmission
  • Muscle contraction
  • Muscle relaxation
  • Blood pressure regulation
  • Release of hormones

Frage 16

Frage
What hormones are important in regulation of blood calcium?
Antworten
  • Calcitonin
  • Parathyroid hormone
  • Angiotensin
  • Renin
  • Magnesium

Frage 17

Frage
What is a poor source of magnesium?
Antworten
  • Processed foods
  • Leafy green vegetables
  • Nuts
  • Seeds
  • Bananas
  • Wholegrains

Frage 18

Frage
What may provide a significant amount of magnesium?
Antworten
  • Hard water
  • Soft water
  • Processed foods

Frage 19

Frage
Which of these is not likely to have a phosphorus deficiency?
Antworten
  • Premature infants
  • Vegans
  • Alcoholics
  • Chronic diarrhea patients
  • Healthy people

Frage 20

Frage
What can a phosphorus deficiency lead to?
Antworten
  • Bone loss
  • Weakness
  • Loss of appetite
  • Hunger
  • Excessive bone growth

Frage 21

Frage
What is the UL of phosphorus?
Antworten
  • 4g/day
  • 12g/day
  • 20g/day

Frage 22

Frage
What can excessive intake of phosphorus lead to?
Antworten
  • Bone resorption
  • Breakdown of bone
  • Loss of apetite
  • Diarrhea

Frage 23

Frage
In the digestive tract How much of the magnesium in the diet is absorbed?
Antworten
  • About 50%
  • About 10%
  • About 90%
  • About 100%

Frage 24

Frage
When does absorption efficiency of magnesium decrease? (In the digestive tract)
Antworten
  • As intake increases
  • As intake decreases
  • Randomly
  • During fasting state

Frage 25

Frage
What enhances absorption of magnesium to a small extent?
Antworten
  • Active form of vitamin D
  • Inactive form of vitamin D
  • Vitamin C
  • The active form of vitamin K

Frage 26

Frage
What decreases absorption of magnesium?
Antworten
  • Phytate
  • Phylase
  • Vitamin D
  • Magnesium

Frage 27

Frage
What reduces absorption of magnesium?
Antworten
  • High dietary calcium
  • Vitamin D
  • Vitamin E
  • Phosphorus

Frage 28

Frage
Where is most of the magnesium in the body?
Antworten
  • 50-60% in the bone
  • 50-60% in the intestine
  • 50-60% in the blood
  • 50-60% in the brain

Frage 29

Frage
What is the 2nd most abundant positively charged intracellular ion?
Antworten
  • Magnesium
  • Calcium
  • Phosphorus
  • Potassium

Frage 30

Frage
Which of these is not a function of magnesium?
Antworten
  • Associated with negatively charged particles
  • Regulation of calcium homeostasis
  • Needed for action of vitamin D, PTH and other hormones
  • A cofactor for over 300 enzymes
  • Breakdown of fat

Frage 31

Frage
What regulates the blood levels of magnesium?
Antworten
  • Kidneys
  • Liver
  • Brain
  • Stomach

Frage 32

Frage
When can a deficiency of magnesium occur?
Antworten
  • Alcoholism
  • Malnutrition
  • With certain diseases and medications
  • Impaired kidney function

Frage 33

Frage
When may magnesium toxicity occur?
Antworten
  • In people with impaired kidney function
  • Alcoholism
  • Malnutrition

Frage 34

Frage
Where is sulfur found in the diet?
Antworten
  • In organic molecules
  • In some inorganic food preservatives
  • In bananas
  • In bread

Frage 35

Frage
What is zinc?
Antworten
  • An enzyme
  • A protein
  • A carbohydrate

Frage 36

Frage
What issues occur with excess zinc?
Antworten
  • Lowered immune function
  • Reduced concentration of HDL cholesterol
  • Polyuria
  • Polydipsia
  • Impaired iron absorption
  • Impaired copper absorption
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