A 5 year old male patient is seen for difficultly with vision. After testing, diabetes is ruled out but the physician informs the parents that their child has a hereditary disease. As part of the treatment regimen the child must avoid consuming certain sugars, such as:
Answer
Maltose
Lactose
Glucose
Mannose
Starch
Question 3
Question
A healthy SGU medical student, Bob, is practising using CliniTest on his own urine. His fellow student, Alice, decides to prank Bob by adding sugar to Bob's sample when Bob is not looking. Much to Alice's disappointment, Bob's test does not indicate any sugar in his urine. What sugar did Alice use?
Answer
Maltose
Fructose
Sucrose
Lactose
Glucose
Question 4
Question
What is the type of linkage between the sugar and base of a nucleotide/nucleoside?
Answer
β-N-glycosidic linkage
α(1->4) glycosidic linkage
α-N-glycosidic linkage
β-O-glycosidic linkage
α(1->2) glycosidic linkage
Question 5
Question
A 2 year child is diagnosed with fructosuria and the physician recommends the child avoid consuming sucrose. Why is sucrose considered a non-reducing sugar?
Answer
Because carbon-1 of glucose and the carbon-2 of mannose are involved in the glycosidic linkage.
Sucrose cannot engage in mutarotation.
Sucrose does not have an available carbon-4.
The aldehyde of glucose and the aldehyde of fructose are not free.
Because sucrose cannot reduce copper from Cu3+ to Cu2+.
Question 6
Question
Which amino acid can support an N-linked glycosolation?
Answer
Serine
Threonine
Asparagine
Glutamine
Cysteine
Question 7
Question
A 60 year old female patient sees a physician at a walk-in clinic for a checkup. The patient is mostly healthy, but complains of constipation. The physician recommends increasing the patient's daily intake of dietary fibre. Why are humans unable to dietary fibre?
Answer
We can't digest β(1,4) glucose linkages of starch.
We can't digest β(1,4) fructose linkages of cellulose.
We can't digest α(1,4) glucose linkages of cellulose.
We can't digest β(1,4) glucose linkages of cellulose.
We can't digest β(1,4) glucose linkages of lactose.
Question 8
Question
A 2-year-old patient is suspected of having fructosuria, which is a hereditary intolerance of fructose. What sugar should the physician recommend the patient's parents avoid?