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Quick Biochemistry - Fats And Fatty Acid Metabolism (Section 6)

1
Which of the following membrane components is most likely to influence the temperature at which a membrane transitions between different phases?
Answer
(C)
Cholesterol
2
Acetyl CoA derived from pyruvate is a precursor for which of the following biosynthetic pathways?
Answer
(A)
Glucose
3
In tissues outside of the liver, which of the following molecules can provide a source of energy?
Answer
(A)
Acetoacetate
4
What is the primary biochemical target of anti-inflammatory corticosteroid drugs?
Answer
(B)
Phospholipase A2
5
Which type of enzyme catalyzes the formation of prostaglandins?
Answer
(C)
Both (A) and (B)
6
Leukotrienes are known to cause which of the following physiological effects?
Answer
(A)
Increase in capillary permeability
7
Which of the following physiological processes is *not* typically decreased by prostaglandins?
Answer
(C)
Uterine contraction
8
Which of the following medical conditions is associated with a reduction in blood cholesterol levels?
Answer
(A)
Hyperthyroidism
9
Which of the following statements accurately contrasts the de novo synthesis and oxidation of fatty acids?
Answer
(A)
Synthesis occurs in cytosol and oxidation in mitochondria
10
How are free fatty acids transported in the bloodstream after being released from fat tissue?
Answer
(A)
Albumin
11
Which condition is associated with a deficiency of B-Galactosidase?
Answer
(B)
Krabbe's disease
12
What enzyme is lacking in individuals with metachromatic leukodystrophy?
Answer
(A)
Arylsulphatase A
13
Which statement about generalized gangliosidosis is false?
Answer
(C)
GM2 ganglioside accumulates in liver and elsewhere
14
Which of the following diseases involves a deficiency of Hexosaminidase A?
Answer
(A)
Tay-Sachs disease
15
In which condition(s) does mental retardation manifest?
Answer
(D)
All of these
16
What enzyme is missing in Fabry's disease?
Answer
(A)
a-Galactosidase
17
Which food source generally provides the highest protein content?
Answer
(D)
Soyabean
18
Approximately how much protein is needed daily per kilogram of body weight for an adult male?
Answer
(C)
1.0 gm/kg of body weight
19
Approximately how much protein is needed daily per kilogram of body weight for an adult female?
Answer
(C)
1.0 gm/kg of body weight
20
Which amino acid can be synthesized from cysteine to help meet nutritional requirements?
Answer
(C)
Methionine
21
Which food item contains invisible fat?
Answer
(A)
Milk
22
In which food is visible fat typically found?
Answer
(C)
Coconut oil
23
Approximately what percentage of eggs is fat?
Answer
(C)
13%
24
About what percentage of pulses is fat?
Answer
(A)
5%
25
What type of fatty acids are most common in meat?
Answer
(A)
Saturated
26
Which of the following oils typically has less than 50% polyunsaturated fatty acids?
Answer
(A)
Groundnut oil
27
Which of the following does NOT contain cholesterol?
Answer
(D)
Pulses
28
Which of the following foods tends to have the most cholesterol?
Answer
(C)
Butter
29
Which part of an egg has the highest cholesterol content?
Answer
(A)
Egg yolk
30
Which of the following foods contains the lowest amount of cholesterol?
Answer
(A)
Milk
31
What type of food component is considered roughage?
Answer
(D)
All of these
32
Approximately what percentage of wheat is starch?
Answer
(C)
70%
33
About what percentage of pulses is composed of starch?
Answer
(B)
60%
34
Which vegetable is a major source of starch?
Answer
(C)
Potato
35
Which cyclic structure is found in all steroids?
Answer
(A)
Cyclopentano perhydrophenanthrene
36
In the Ames test, how does adding a carcinogen affect the growth of S. typhimurium?
Answer
(C)
In the absence of histidine
37
Why is liver homogenate included in the culture medium of the Ames test?
Answer
(A)
It converts pro-carcinogens into carcinogens
38
In which type of jaundice are bile pigments present and urobilinogen absent in urine?
Answer
(C)
Obstructive jaundice
39
In which condition are bile pigments absent and urobilinogen increased in urine?
Answer
(A)
Haemolytic jaundice
40
What is observed in the urine of someone with obstructive jaundice?
Answer
(D)
Presence of bile pigments and absence of urobilinogen
41
In a patient with red blood cell destruction-related jaundice, what would be found in the urine?
Answer
(C)
Bile pigments but not urobilinogen
42
In which of the following conditions might serum albumin levels be reduced?
Answer
(B)
A condition impacting liver cells
43
What is a typical range for serum albumin levels?
Answer
(C)
3.5-5.5 gm/dl
44
What is a typical range for serum globulin levels?
Answer
(B)
2.0-3.6 gm/dl
45
In which of the following diseases or conditions is the serum albumin to globulin ratio often changed?
Answer
(C)
An inflammatory liver condition caused by a virus
46
Where does most cholesterol esterification take place?
Answer
(B)
Liver
47
Which of the following conditions can lead to a problem with galactose metabolism?
Answer
(B)
A condition impacting liver cells
48
Where is prothrombin primarily made?
Answer
(C)
Liver
49
In which of the following is prothrombin time still increased despite giving vitamin K injections?
Answer
(B)
Damage to the liver
50
Which of the following statements about a condition where bile flow is obstructed is NOT correct?
Answer
(A)
The amount of conjugated bilirubin in the blood is normal