Metabolic Pathway, Digestion and Absorption; Carbohydrates, Lipids, Proteins, Vitamins, Fibres and Minerals Part 2
Time Left
--:--:--
A-
A+
Switch Full Screen
Question No. 1
Marks
+1
-0
Time
0:00
☰
Which mineral is the
main component
of table salt?
A.
Magnesium
B.
Sodium
C.
Calcium
D.
Potassium
Question No. 2
Marks
+1
-0
Time
0:00
☰
Zinc is an important component of which
hormone
?
A.
Growth hormone
B.
Thyroxine
C.
Adrenaline
D.
Insulin
Question No. 3
Marks
+1
-0
Time
0:00
☰
Phosphorus plays a key role in:
A.
Energy release and bone formation
B.
Only muscle function
C.
Only blood formation
D.
Only nerve function
Question No. 4
Marks
+1
-0
Time
0:00
☰
Which mineral helps prevent
dental cavities
?
A.
Chromium
B.
Magnesium
C.
Potassium
D.
Fluoride
Question No. 5
Marks
+1
-0
Time
0:00
☰
Copper is primarily important as part of:
A.
Hemoglobin only
B.
Thyroid hormones
C.
Many enzymes
D.
Bone structure only
Question No. 6
Marks
+1
-0
Time
0:00
☰
The
pentose phosphate pathway
primarily produces:
A.
Pyruvate and lactate
B.
ATP and NADH
C.
Acetyl CoA and CO₂
D.
NADPH and ribose-5-phosphate
Question No. 7
Marks
+1
-0
Time
0:00
☰
What is the
common pathway
for complete oxidation of carbohydrates, proteins, and lipids?
A.
Gluconeogenesis
B.
Krebs cycle
C.
Beta-oxidation
D.
Glycolysis
Question No. 8
Marks
+1
-0
Time
0:00
☰
Which coenzyme is produced during the conversion of
succinate to fumarate
?
A.
NADH
B.
GTP
C.
FADH₂
D.
ATP
Question No. 9
Marks
+1
-0
Time
0:00
☰
During
substrate-level phosphorylation
in the Krebs cycle, which molecule is formed?
A.
Acetyl CoA
B.
FADH₂
C.
NADH
D.
ATP or GTP
Question No. 10
Marks
+1
-0
Time
0:00
☰
Which metabolic pathway occurs under
anaerobic conditions
?
A.
Oxidative phosphorylation
B.
Electron transport chain
C.
Glycolysis
D.
Krebs cycle
Question No. 11
Marks
+1
-0
Time
0:00
☰
The enzyme
aconitase
catalyzes which conversion in the Krebs cycle?
A.
Malate to oxaloacetate
B.
Citrate to isocitrate
C.
Succinate to fumarate
D.
Fumarate to malate
Question No. 12
Marks
+1
-0
Time
0:00
☰
What is the role of
NAD⁺
in the Krebs cycle?
A.
It produces ATP directly
B.
It accepts electrons and hydrogen
C.
It acts as an enzyme
D.
It releases CO₂
Question No. 13
Marks
+1
-0
Time
0:00
☰
Which part of the small intestine has the
highest rate
of carbohydrate and protein absorption?
A.
Ileum
B.
Colon
C.
Jejunum
D.
Duodenum
Question No. 14
Marks
+1
-0
Time
0:00
☰
The Na⁺-K⁺ pump in intestinal cells maintains:
A.
High intracellular K⁺ concentration only
B.
Low intracellular Na⁺ concentration
C.
Glucose concentration gradient
D.
High intracellular Na⁺ concentration
Question No. 15
Marks
+1
-0
Time
0:00
☰
Which transporter moves
monosaccharides from intestinal cells to blood
?
A.
SGLT2
B.
GLUT2
C.
SGLT1
D.
GLUT5
Question No. 16
Marks
+1
-0
Time
0:00
☰
What happens to
indigestible fibers
in the digestive system?
A.
They are stored in the liver
B.
They are absorbed in the stomach
C.
They are converted to glucose
D.
They are eliminated in feces
Question No. 17
Marks
+1
-0
Time
0:00
☰
Why are
dipeptides and tripeptides
absorbed faster than free amino acids?
A.
They don't require energy
B.
They use more efficient transport mechanisms
C.
They use passive diffusion
D.
They are smaller molecules
Question No. 18
Marks
+1
-0
Time
0:00
☰
The primary site of
lipid absorption
is:
A.
Esophagus
B.
Small intestine
C.
Large intestine
D.
Stomach
Question No. 19
Marks
+1
-0
Time
0:00
☰
Vitamin A exists in which two main forms in diet?
A.
Tocopherol and phylloquinone
B.
Cholecalciferol and ergocalciferol
C.
Niacin and niacinamide
D.
Retinol and beta-carotene
Question No. 20
Marks
+1
-0
Time
0:00
☰
Vitamin D controls the homeostasis and metabolism of which mineral?
A.
Iron
B.
Potassium
C.
Sodium
D.
Calcium
Question No. 21
Marks
+1
-0
Time
0:00
☰
The antioxidant function of vitamin E involves:
A.
Absorbing UV radiation
B.
Donating hydrogen atoms to free radicals
C.
Synthesizing enzymes
D.
Producing free radicals
Question No. 22
Marks
+1
-0
Time
0:00
☰
Which vitamin is essential for the synthesis of
prothrombin
?
A.
Vitamin C
B.
Vitamin K
C.
Vitamin A
D.
Vitamin E
Question No. 23
Marks
+1
-0
Time
0:00
☰
Vitamin B2 is also known as:
A.
Thiamine
B.
Cobalamin
C.
Riboflavin
D.
Pyridoxine
Question No. 24
Marks
+1
-0
Time
0:00
☰
Which vitamin is essential for
collagen synthesis
?
A.
Vitamin K
B.
Vitamin C
C.
Vitamin B12
D.
Vitamin A
Question No. 25
Marks
+1
-0
Time
0:00
☰
Vitamin B7 is commonly known as:
A.
Folate
B.
Niacin
C.
Biotin
D.
Pantothenic acid
Question No. 26
Marks
+1
-0
Time
0:00
☰
Which vitamin deficiency causes
beriberi
?
A.
Vitamin C
B.
Vitamin B6
C.
Vitamin B12
D.
Vitamin B1
Question No. 27
Marks
+1
-0
Time
0:00
☰
Vitamin B3 is also called:
A.
Riboflavin
B.
Pyridoxine
C.
Niacin
D.
Pantothenic acid
Question No. 28
Marks
+1
-0
Time
0:00
☰
Which vitamin is necessary to prevent
neural tube defects
during pregnancy?
A.
Vitamin B1
B.
Vitamin B6
C.
Vitamin B12
D.
Vitamin B9
Question No. 29
Marks
+1
-0
Time
0:00
☰
Which mineral is an activator of
kinase enzymes
?
A.
Sodium
B.
Calcium
C.
Magnesium
D.
Potassium
Question No. 30
Marks
+1
-0
Time
0:00
☰
Chromium helps the body use which hormone effectively?
A.
Growth hormone
B.
Thyroxine
C.
Insulin
D.
Cortisol
Question No. 31
Marks
+1
-0
Time
0:00
☰
Which mineral is a component of the enzyme
arginase
?
A.
Zinc
B.
Copper
C.
Magnesium
D.
Iron
Question No. 32
Marks
+1
-0
Time
0:00
☰
The absorption of
non-heme iron
can be decreased by:
A.
Citric acid
B.
Vitamin C
C.
Whole-wheat bran
D.
Animal protein
Question No. 33
Marks
+1
-0
Time
0:00
☰
Potassium is mainly found in which
cellular compartment
?
A.
Outside cells
B.
In extracellular fluid
C.
In blood plasma only
D.
Inside cells
Question No. 34
Marks
+1
-0
Time
0:00
☰
Which mineral enhances
glucose tolerance
and insulin sensitivity?
A.
Sodium
B.
Calcium
C.
Chromium
D.
Zinc
Question No. 35
Marks
+1
-0
Time
0:00
☰
High intake of
wheat bran
may affect the urinary excretion of:
A.
Sodium only
B.
Calcium
C.
Iron only
D.
Potassium only
Question No. 36
Marks
+1
-0
Time
0:00
☰
Which mineral is essential for proper
thyroid hormone
synthesis?
A.
Iodine
B.
Zinc
C.
Copper
D.
Selenium
Question No. 37
Marks
+1
-0
Time
0:00
☰
During
fasting state
, which metabolic process is enhanced?
A.
Gluconeogenesis
B.
Glycogen synthesis
C.
Fatty acid synthesis
D.
Protein synthesis
Question No. 38
Marks
+1
-0
Time
0:00
☰
The conversion of
pyruvate to acetyl CoA
is catalyzed by:
A.
Hexokinase
B.
Pyruvate dehydrogenase complex
C.
Citrate synthase
D.
Pyruvate kinase
Question No. 39
Marks
+1
-0
Time
0:00
☰
Which molecule is the
final electron acceptor
in aerobic respiration?
A.
Cytochrome c
B.
NAD⁺
C.
Oxygen
D.
FAD
Question No. 40
Marks
+1
-0
Time
0:00
☰
Complete oxidation of
one molecule of FADH₂
yields approximately:
A.
4 ATP
B.
2 ATP
C.
3 ATP
D.
1 ATP
Question No. 41
Marks
+1
-0
Time
0:00
☰
The primary function of the
electron transport chain
is to:
A.
Produce CO₂
B.
Synthesize glucose
C.
Generate a proton gradient for ATP synthesis
D.
Break down proteins
Question No. 42
Marks
+1
-0
Time
0:00
☰
Which process converts
excess glucose to fat
?
A.
Lipogenesis
B.
Glycogenolysis
C.
Beta-oxidation
D.
Gluconeogenesis
Question No. 43
Marks
+1
-0
Time
0:00
☰
The breakdown of
fatty acids
to acetyl CoA is called:
A.
Alpha-oxidation
B.
Lipogenesis
C.
Lipolysis
D.
Beta-oxidation
Question No. 44
Marks
+1
-0
Time
0:00
☰
Which organ is the
primary site
of gluconeogenesis?
A.
Brain
B.
Small intestine
C.
Muscle
D.
Liver
Question No. 45
Marks
+1
-0
Time
0:00
☰
The term
amphibolic pathway
refers to:
A.
Pathways that occur in water
B.
Pathways that only break down molecules
C.
Pathways that only synthesize molecules
D.
Pathways involved in both catabolism and anabolism
Question No. 46
Marks
+1
-0
Time
0:00
☰
Which molecule links
carbohydrate and fat metabolism
?
A.
Glucose-6-phosphate
B.
Pyruvate
C.
Acetyl CoA
D.
Oxaloacetate
Submit Test
Mark for Review & Next
Clear Response
‹ Prev
Save & Next ›
📋 Submit Test?
0
Answered
0
Skipped
46
Total
You
cannot
change answers after submission.
Cancel
Submit