Biochem - Vitamins

Beschreibung

biochem Quiz am Biochem - Vitamins, erstellt von Alannah McDonnell am 10/03/2018.
Alannah McDonnell
Quiz von Alannah McDonnell, aktualisiert more than 1 year ago
Alannah McDonnell
Erstellt von Alannah McDonnell vor mehr als 6 Jahre
211
2

Zusammenfassung der Ressource

Frage 1

Frage
Which of these vitamins are fat soluble?
Antworten
  • A
  • D
  • E
  • K
  • B
  • C

Frage 2

Frage
Where are vitamins absorbed in the digestive tract?
Antworten
  • 100% in liver
  • 40 - 90 % in the small intestine
  • 40-50% in stomach
  • 10% in mouth
  • 5% in pancreas

Frage 3

Frage
Function of liver in absorbing vitamins?
Antworten
  • Bile produced here improves motility
  • bile produced here helps to absorb water soluble vitamins
  • bile produced here helps to absorb fat soluble vitamins
  • bile releases vitamins from food

Frage 4

Frage
Where does some niacin absorption occur?
Antworten
  • stomach
  • mouth
  • liver
  • pancreas

Frage 5

Frage
What is absorbed in the small intestine?
Antworten
  • Water soluble vitamins
  • fat soluble vitamins

Frage 6

Frage
How are water soluble vitamins absorbed in the small intestine
Antworten
  • simple diffusion
  • facilitated diffusion
  • active transport
  • absorbed from micelles along with dietary fat

Frage 7

Frage
How are fat soluble vitamins absorbed in the small intestine?
Antworten
  • simple diffusion
  • facilitated diffusion
  • active transport
  • from micelles along with dietary fat

Frage 8

Frage
Where is vitamin C absorbed?
Antworten
  • in large intestine
  • stomach
  • pancreas
  • in ileum
  • liver

Frage 9

Frage
what does chewing do?
Antworten
  • break apart fiber
  • break down fat
  • release vitamins
  • release enzymes
  • absorb carbohydrates

Frage 10

Frage
where is vitamin B12 absorbed?
Antworten
  • ileum
  • stomach
  • large intestine
  • liver
  • pancreas

Frage 11

Frage
what is absorbed in the large intestine?
Antworten
  • small amounts of vitamin K
  • large amounts of vitamin K
  • small amounts of biotin
  • large amounts of biotin
  • small amounts of pantothenic acid
  • large amounts of pantothenic acid
  • small amounts of vitamin B6
  • large amounts of vitamin B6

Frage 12

Frage
what is released by the pancreas?
Antworten
  • pantothenic acid
  • vitamin C
  • digestive enzymes
  • bile
  • HCl Acid

Frage 13

Frage
Bioavailability refers to the amount of a nutrient that can be absorbed an utilized in the body
Antworten
  • True
  • False

Frage 14

Frage
What affects bioavailability of vitamins?
Antworten
  • solubility
  • energy requiring transport system
  • carrier proteins
  • concentration gradient
  • other vitamins

Frage 15

Frage
Which vitamins are all co enzymes
Antworten
  • A
  • E
  • D
  • K
  • B
  • C

Frage 16

Frage
What do vitamins do?
Antworten
  • promote body activities
  • regulate body activities
  • enhance body secretions
  • inhibit body secretions

Frage 17

Frage
What vitamins are stored in the body?
Antworten
  • most water soluble vitamins
  • B12
  • fat soluble vitamins
  • B6

Frage 18

Frage
Where are fat soluble vitamins stored?
Antworten
  • Liver
  • Fatty tissues
  • Urine
  • Stomach
  • Large intestine

Frage 19

Frage
What is the active form of thiamin in the body?
Antworten
  • Thiamin pyrophosphate
  • Thiamine
  • Thyrophosphate
  • Vitamin B6

Frage 20

Frage
Function of thiamin in the body?
Antworten
  • Essential to the energy-producing reactions
  • Exes tail to energy-using reactions
  • Essential to Breakdown of large molecules
  • Essential to build up of large molecules

Frage 21

Frage
Active forms of riboflavin in the body?
Antworten
  • Flavin adenine dinucleotide
  • Flavin mononucleotide
  • Flavin adenosine dineutralise
  • Flactin monosaccharide

Frage 22

Frage
Active forms of niacin in the body?
Antworten
  • Nicotinamide adenine dinucleotide
  • Nicotinamide adenine dinucleotide phosphate
  • Nicotin amide dinucleotide phosphur
  • Nicotine amide dinucleotide

Frage 23

Frage
what are folate and folacin?
Antworten
  • General terms for compounds that have chemical structures and nutritional properties similar to those of folic acid
  • Folic acid
  • Substrates similar to folatemin
  • Bases

Frage 24

Frage
Active form of B6 in the body?
Antworten
  • Pyridoxal phosphate
  • Phosphate pyridoxal
  • Pyrimidal phosphur
  • Phosphur pyrimidal

Frage 25

Frage
Symptoms of folate deficiency
Antworten
  • Poor growth
  • Rapid growth
  • Problems in Nerve development
  • Problems in Nerve function
  • Diarrhea
  • Constipation

Frage 26

Frage
Some causes of neural tube defects?
Antworten
  • Low folate levels
  • High folate levels
  • Genetic predisposition
  • Age

Frage 27

Frage
Spina bifida and anencephaly are two forms of neural tube defects
Antworten
  • True
  • False

Frage 28

Frage
What increases blood homocysteine levels?
Antworten
  • Low intake of folate
  • High intake of folate
  • Low intake of thiamin
  • High intake fo thiamin

Frage 29

Frage
What may mask the early symptoms of a vitamin B12 deficiency?
Antworten
  • A high intake of folate
  • A low intake of folate
  • A high intake of thiamin
  • A low intake of thiamin

Frage 30

Frage
UL of folate?
Antworten
  • 1000 micrograms per day
  • 1000 grams per day
  • 1000 milligrams per day
  • 10 grams

Frage 31

Frage
What is necessary for the maintenance of myelin?
Antworten
  • Vitamin B12
  • Vitamin C
  • Vitamin D
  • Vitamin B6
  • Vitamin A

Frage 32

Frage
Which of these is not required for special handling of vitamin B12 in the digestive tract?
Antworten
  • Stomach acid
  • Enzymes
  • Intrinsic factor
  • Myelin

Frage 33

Frage
What is important for the metabolism of odd-numbered fatty acids and methionine?
Antworten
  • Active form of vitamin B12
  • Active form of vitamin B6
  • Active form of vitamin C
  • Active form of vitamin D

Frage 34

Frage
What is the active form of vitamin B12?
Antworten
  • Vitamin B 6
  • Cobalmin coenzymes
  • Folic acid
  • Cholecalciferol

Frage 35

Frage
What can a vitamin B12 deficiency cause?
Antworten
  • Macrocyclic megaloblastic anaemia
  • Microcytic anaemia
  • Folate deficiency
  • Microblastic anaemia

Frage 36

Frage
What is B12 required for?
Antworten
  • Converting folate into form active for DNA synthesis
  • Converting folic acid into form active for DNA synthesis
  • Converting folic acid into form active for acid synthesis
  • Converting folate into form active for acid synthesis

Frage 37

Frage
What is the active form of vitamin C?
Antworten
  • Ascorbic acid
  • Cholecalciferol
  • Retinol
  • Folic acid
  • Riboflavin

Frage 38

Frage
What is the main function of ascorbic acid?
Antworten
  • Reducing agent
  • Catalyst
  • Reduces disease
  • Oxidizing agent

Frage 39

Frage
Who in the population is highest at risk for vitamin B12 deficiency?
Antworten
  • Patients with pernicious anemia
  • Patients with atrophied gastritis
  • Vegans
  • Someone taking high doses of folate supplements

Frage 40

Frage
*** What are some other functions of Vitamin C in the body?
Antworten
  • Coenzyme for hydroxylation of prolyl-residues of collagen
  • Coenzyme for hydroxylation of lysyl-residues of collagen
  • Antioxidants preventing oxidative damage caused by free radicals

Frage 41

Frage
What is retinol?
Antworten
  • A primary alcohol
  • An aldehyde derived from retinol
  • An acid derived from oxidation of retinal
  • When oxidized yields 2 molecules of retinal

Frage 42

Frage
What is retinal?
Antworten
  • A primary alcohol
  • An aldehyde derived from oxidation of retinal
  • An acid derived from oxidation of retinal
  • When oxidized yields 2 molecules of retinal

Frage 43

Frage
What is retinoic acid?
Antworten
  • A primary alcohol
  • An aldehyde derived from retinol
  • An acid derived from oxidation of retinal
  • When oxidation yields 2 molecules of retinal

Frage 44

Frage
What is Beta-Carotene?
Antworten
  • A primary alcohol
  • An aldehyde derived from retinol
  • An acid derived from oxidation of retinal
  • When oxidation yields 2 molecules of retinal

Frage 45

Frage
Where is preformed vitamin A found?
Antworten
  • In animal foods
  • In plants
  • In olive oil
  • In whole wheat bread

Frage 46

Frage
Where is provitamins A found?
Antworten
  • In plants
  • In animal foods
  • In olive oil
  • In whole wheat bread

Frage 47

Frage
What are preformed vitamin A
Antworten
  • Retinoids
  • Carotenoids

Frage 48

Frage
What are provitamins A compounds?
Antworten
  • Carotenoids
  • Retinoids

Frage 49

Frage
what can vitamin A deficiency cause?
Antworten
  • Light blindness
  • Weak bones
  • Macrocyclic anaemia
  • Fat retention

Frage 50

Frage
What is cholecalciferol made in the skin from?
Antworten
  • Cholesterol
  • Action of sunlight
  • Vitamin A
  • Amino acids

Frage 51

Frage
What is cholecalciferol the active form of?
Antworten
  • Vitamin D
  • Vitamin C
  • Vitamin A
  • Vitamin E

Frage 52

Frage
What does vitamin D do in the body?
Antworten
  • Maintains blood levels of calcium and phosphorus for bone health
  • Maintains normal function of parathyroid gland and the immune system
  • Prenevts certain types of cancer and heart disease
  • Protects against free radicals

Frage 53

Frage
What is the only form of Vitamin E that can meet human needs?
Antworten
  • Alpha-tocopherol
  • Beta-tocopherol
  • Gamma-tocopherol
  • Delta-tocopherol

Frage 54

Frage
What is the main source of alpha-tocopherol?
Antworten
  • Sunflower seeds
  • White rice
  • Lentils
  • Milk

Frage 55

Frage
*** what is synthetic alpha-tocopherol made of?
Antworten
  • 8 isomers
  • 12 isomers

Frage 56

Frage
Where is most vitamin E then in the body?
Antworten
  • Liver
  • Spleen
  • Stomach
  • Intestines

Frage 57

Frage
What delivers vitamin E to the tissues in the body?
Antworten
  • Lipoproteins
  • Catalysts
  • Carrier enzymes
  • Amalase
  • Lipase

Frage 58

Frage
What does vitamin E function primarily as?
Antworten
  • A fat soluble antioxidant
  • A water soluble antioxidant
  • A fat soluble reducing agent
  • A water soluble reducing agent

Frage 59

Frage
**** What is absorbed vitamin E incorporated into?
Antworten
  • Chylomicrons
  • Ascorbic acid
  • Cholecalciferol

Frage 60

Frage
What is vitamin E necessary for?
Antworten
  • Reproductive function
  • Bone structure
  • Breakdown of fat
  • Kidney function

Frage 61

Frage
What does vitamin E protect?
Antworten
  • Unsaturated fatty acid cells in cell membranes
  • Saturated fatty acid cells in cell membrane
  • Phospholipids in cell membrane
  • Free radicals in cell membranes

Frage 62

Frage
How does Vitamin E protect the cell membrane?
Antworten
  • Neutralizing free radicals
  • Removing fatty acids
  • Replacing fatty acids
  • Repairing phospholipids

Frage 63

Frage
*** What can consumption in excess of fat soluble vitamins do?
Antworten
  • Lead to toxic accumulation
  • Affect storage of water soluble vitamins

Frage 64

Frage
*** What is riobflavin essential for?
Antworten
  • Energy producing reactions
  • Synthesis reaction

Frage 65

Frage
*** What is niacin essential to?
Antworten
  • Energy producing and synthesis reactions
  • Just energy producing reactions
  • Just energy synthesis reactions

Frage 66

Frage
Which of these vitamins are water soluble?
Antworten
  • C
  • B
  • D
  • E
  • K
  • A

Frage 67

Frage
Label the molecules
Antworten
  • intermediate from run catalyzed by a-KDGH
  • intermediate from rxn catalyzed by PDH
  • thiamine pyrophosphate
  • thiamine

Frage 68

Frage
A metabolite of tryptophan can also be used in synthesis of NAD+
Antworten
  • True
  • False

Frage 69

Frage
Biotin in the body is important for ...
Antworten
  • Energy production
  • Metabolism of fatty acids
  • Metabolism of amino acids

Frage 70

Frage
The active form of biotin is a coenzyme that adds COOH to molecules
Antworten
  • True
  • False

Frage 71

Frage
Pantothenic acid in the body is needed for...
Antworten
  • Synthesis of fatty acids
  • Synthesis of cholesterol
  • Energy production

Frage 72

Frage
The active form of pantothenic acid is...
Antworten
  • A part of coenzyme A
  • A coenzyme that adds COOH to molecules
  • Vitamin B 12
  • Pantotheruse

Frage 73

Frage
Label the forms of vitamin B 6
Antworten
  • pyridoxal
  • pyridoxal phosphate
  • pyridoxamine
  • pyridoxine
  • isoniazid

Frage 74

Frage
An isoniazid-anti TB drug can induce vitamin B6 deficiency by forming an inactive derivative with pyridoxal phosphate.
Antworten
  • True
  • False

Frage 75

Frage
Vitamin B6 in the body is important for...
Antworten
  • synthesis reactions
  • Energy production
  • Metabolism of fatty acids
  • Metabolism of amino acids

Frage 76

Frage
Folate coenzymes are needed in the body for...
Antworten
  • Transferring chemical groups containing a single carbon atom
  • Synthesis of DNA
  • Metabolism of some amino acids
  • Metabolism of fatty acids
  • Energy production

Frage 77

Frage
Epidemiological and clinical studies indicate that higher dietary folate intake and blood folate levels are associated with higher risks of certain cancers
Antworten
  • True
  • False

Frage 78

Frage
Choline is needed ....
Antworten
  • To synthesize a number of important molecules
  • As a source of carbon atoms
  • For energy synthesis
  • For metabolism of fatty acids

Frage 79

Frage
Vitamin A effects cell differentiation through its effect of gene expression
Antworten
  • True
  • False

Frage 80

Frage
Vitamin K has 2 forms...
Antworten
  • Phylloquinone - found in plants
  • Menaquinone - found in fish oils and meats
  • Menaquinone - can be synthesized by bacteria
  • Phylloquinone x can be synthesized in bacteria

Frage 81

Frage
Vitamin K can be used in the body for ...
Antworten
  • Energy synthesis
  • A coenzyme for the production of prothrombin
  • A coenzyme for the production of blood clotting factors
  • Health of bones
  • Health of blood vessels
Zusammenfassung anzeigen Zusammenfassung ausblenden

ähnlicher Inhalt

Biochemistry MCQs 3rd Coloquim PMU 2nd Year
Med Student
Biochem quiz Maggio Stuyvesant (study guide)
Chrissie Mar
Biochemistry Year 2 Colloq 2
Sole C
Pathway to muscle contraction
Laura Badger
Bio Chemistry
charlesm2000
Biochemistry MCQs 3rd Coloquim PMU 2nd Year
hamza 123
The Molecules of Cells
Silvia Leija
Final Biochemistry
Savannah Kaminski
Amino Acid
sara m
Amino Acid Derivatives
Beatriz Da Silva
Lecture 2 Biochem notes and PP
Isabella Papageorgiou