Science Practice Study Guide Questions with A level solution
version 2026/2027
Vitamin b9, food sources correct answer
- dark leafy green, legumes, liver, asparagus, seeds
Vitamin b9, deficiency correct answer
Def: neural tube defects, rbcs formation (looks like anemia)
Vitamin b12, is and does correct answer
Cobalamin
Does: fatty acid metabolism, rbcs
Vitamin b12, food sources correct answer
- animal origin, meat, liver, oysters, fish, eggs
Vitamin b12, def correct answer
Def: high risk -> vegans, older, bariatric surgery (lack intrinsic factor)
Pernicious anemia - anemia s/s + numbness & tingling
Intrinsic factor
Essential protein in the stomach for absorption of vitamin b12
Dehydration s/s
First s/s:
Thirst, headache, decreased urine output, dry mouth, dizziness, irritability, decreased
skin turgor (takes longer for skin to retract/less elastic)
Advanced s/s:
,Visual impairment, hypotension, anorexia, muscle weakness, kidney failure, and
seizures
Dehydration fluid loss for medical assistance
Fluid loss of 10% of body weight
Folic acid intake + pregancy
400mcg before
600mcg during
Indispensable amino acids
Pvt tim hill (pivot tim (up the) hill)
Pvt
P: phenylalanine
V: valine
T: threonine [1]
Tim
T: tryptophan
I: isoleucine
M: methionine
Hill
H: histidine
L: leucine
L: lysine
,Animal product that is an incomplete protein
Gelatin, lacking 3
Acidosis causes
Blood below 7.35
- diabetic ketoacidosis (lack of insulin, rapid fat breakdown)
- hypoventilation, obstruction of lungs, accumulation of co2
-loss of bicarbonate in blood
Alkalosis causes
Blood above 7.45
- hyperventilation
- severe vomitting
- increased bicarbonate in blood
Normal blood ph
7.35-7.45 (slightly alkaline)
A patient not eating/consuming enough protein may develop _____.
Edema
Calcium blocks __ absorption
Iron
Eat lots of iron
Egg yolks
Apricots
Tofu
Legumes
Oysters
, Tuna
Seeds
Potatoes
Fish
Iron fortified cereals
Red meats
Poultry
Nuts
When utilizing a nasogastric (ng) tube, after you aspirate the contents into the syringe,
we must check the _____ _____.
Ph balance (less than 5.5 ph indicates you're in the stomach) (6.0 and higher you may
be at risk of aspiration)
Checking the acidity and the amount of gastric residual helps the care team evaluate
how well the patient is digesting food and whether the stomach is emptying correctly.
A patient with migraine headaches should decrease ____ foods.
Tyramine
Tyramine foods
Aged cheese or cured meats, fermented and pickled vegetables, soy and yeast
products, alcohol, and overripe produce, chocolate
Before discontinuing total parenteral nutrition (tpn), the nurse should gradually _______
before disconnecting to avoid ______.
Reduce/decrease tpn,
Avoid hypoglycemia
Emesis
Vomit