Alannah McDonnell
Quiz by , created more than 1 year ago

biochem Quiz on Biochem - minerals, created by Alannah McDonnell on 17/03/2018.

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Alannah McDonnell
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Biochem - minerals

Question 1 of 36

1

What are minerals?

Select one of the following:

  • Inorganic elements

  • Organic elements

  • Proteins

  • Substrates found most often in processed foods

Explanation

Question 2 of 36

1

How are major minerals defined?

Select one of the following:

  • Inorganic materials

  • Organic materials

  • >100mg per day needed

  • <100mg per day needed

Explanation

Question 3 of 36

1

How are trace minerals defined

Select one of the following:

  • Less than 100mg per day needed

  • More than 100mg per day needed

  • Inorganic materials

  • Organic materials

Explanation

Question 4 of 36

1

What do many minerals serve as?

Select one of the following:

  • Cofactors essential for enzyme activity

  • Enzymes essential for cofactors activity

  • Nutrients

  • Protein carriers

Explanation

Question 5 of 36

1

Which of these are not trace elements

Select one or more of the following:

  • Iron

  • Copper

  • Zinc

  • Sodium

  • Potassium

Explanation

Question 6 of 36

1

Which of these are not trace elements?

Select one or more of the following:

  • Fluoride

  • Manganese

  • Molybdenum

  • Chloride

  • Calcium

  • Phosphorus

Explanation

Question 7 of 36

1

Which of these are not trace elements?

Select one or more of the following:

  • Selenium

  • Iodine

  • Chromium

  • Magnesium

  • Sulphur

Explanation

Question 8 of 36

1

Which of these are electrolytes?

Select one or more of the following:

  • Sodium

  • Potassium

  • Chloride

  • Fluoride

  • Magnesium

Explanation

Question 9 of 36

1

What are electrolytes essential for?

Select one or more of the following:

  • Nerve conduction

  • Muscle contraction

  • Muscle relaxation

  • Lipid transport

  • Nerve suppressant

Explanation

Question 10 of 36

1

What does balancing electrolytes do?

Select one of the following:

  • Helps balance body fluids

  • Makes body fluids irregular

  • Limits lipid movement

  • Limits loss of water

Explanation

Question 11 of 36

1

What is the modern diet?

Select one of the following:

  • High in Na low in K

  • High in K low in Na

  • Equal amounts of K and Na

  • Varying amounts of K and Na

Explanation

Question 12 of 36

1

Diets high in what may lower the risk of hyper tension?

Select one or more of the following:

  • Potassium

  • Calcium

  • Magnesium

  • Sodium

  • Fluoride

Explanation

Question 13 of 36

1

How is calcium absorbed in the digestive tract?

Select one or more of the following:

  • Active transport

  • Passive transport

Explanation

Question 14 of 36

1

What is the bioavailability of calcium decreased by?

Select one or more of the following:

  • Tannins

  • Fiber

  • Phytates

  • Oxalates

Explanation

Question 15 of 36

1

What does calcium have a vital role in?

Select one or more of the following:

  • Nerve transmission

  • Muscle contraction

  • Muscle relaxation

  • Blood pressure regulation

  • Release of hormones

Explanation

Question 16 of 36

1

What hormones are important in regulation of blood calcium?

Select one or more of the following:

  • Calcitonin

  • Parathyroid hormone

  • Angiotensin

  • Renin

  • Magnesium

Explanation

Question 17 of 36

1

What is a poor source of magnesium?

Select one of the following:

  • Processed foods

  • Leafy green vegetables

  • Nuts

  • Seeds

  • Bananas

  • Wholegrains

Explanation

Question 18 of 36

1

What may provide a significant amount of magnesium?

Select one of the following:

  • Hard water

  • Soft water

  • Processed foods

Explanation

Question 19 of 36

1

Which of these is not likely to have a phosphorus deficiency?

Select one or more of the following:

  • Premature infants

  • Vegans

  • Alcoholics

  • Chronic diarrhea patients

  • Healthy people

Explanation

Question 20 of 36

1

What can a phosphorus deficiency lead to?

Select one or more of the following:

  • Bone loss

  • Weakness

  • Loss of appetite

  • Hunger

  • Excessive bone growth

Explanation

Question 21 of 36

1

What is the UL of phosphorus?

Select one of the following:

  • 4g/day

  • 12g/day

  • 20g/day

Explanation

Question 22 of 36

1

What can excessive intake of phosphorus lead to?

Select one of the following:

  • Bone resorption

  • Breakdown of bone

  • Loss of apetite

  • Diarrhea

Explanation

Question 23 of 36

1

In the digestive tract How much of the magnesium in the diet is absorbed?

Select one of the following:

  • About 50%

  • About 10%

  • About 90%

  • About 100%

Explanation

Question 24 of 36

1

When does absorption efficiency of magnesium decrease? (In the digestive tract)

Select one of the following:

  • As intake increases

  • As intake decreases

  • Randomly

  • During fasting state

Explanation

Question 25 of 36

1

What enhances absorption of magnesium to a small extent?

Select one of the following:

  • Active form of vitamin D

  • Inactive form of vitamin D

  • Vitamin C

  • The active form of vitamin K

Explanation

Question 26 of 36

1

What decreases absorption of magnesium?

Select one of the following:

  • Phytate

  • Phylase

  • Vitamin D

  • Magnesium

Explanation

Question 27 of 36

1

What reduces absorption of magnesium?

Select one of the following:

  • High dietary calcium

  • Vitamin D

  • Vitamin E

  • Phosphorus

Explanation

Question 28 of 36

1

Where is most of the magnesium in the body?

Select one of the following:

  • 50-60% in the bone

  • 50-60% in the intestine

  • 50-60% in the blood

  • 50-60% in the brain

Explanation

Question 29 of 36

1

What is the 2nd most abundant positively charged intracellular ion?

Select one of the following:

  • Magnesium

  • Calcium

  • Phosphorus

  • Potassium

Explanation

Question 30 of 36

1

Which of these is not a function of magnesium?

Select one of the following:

  • 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

Explanation

Question 31 of 36

1

What regulates the blood levels of magnesium?

Select one of the following:

  • Kidneys

  • Liver

  • Brain

  • Stomach

Explanation

Question 32 of 36

1

When can a deficiency of magnesium occur?

Select one or more of the following:

  • Alcoholism

  • Malnutrition

  • With certain diseases and medications

  • Impaired kidney function

Explanation

Question 33 of 36

1

When may magnesium toxicity occur?

Select one of the following:

  • In people with impaired kidney function

  • Alcoholism

  • Malnutrition

Explanation

Question 34 of 36

1

Where is sulfur found in the diet?

Select one or more of the following:

  • In organic molecules

  • In some inorganic food preservatives

  • In bananas

  • In bread

Explanation

Question 35 of 36

1

What is zinc?

Select one of the following:

  • An enzyme

  • A protein

  • A carbohydrate

Explanation

Question 36 of 36

1

What issues occur with excess zinc?

Select one or more of the following:

  • Lowered immune function

  • Reduced concentration of HDL cholesterol

  • Polyuria

  • Polydipsia

  • Impaired iron absorption

  • Impaired copper absorption

Explanation

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