Fisheries • 2017 • Technical Paper-III
Which of the following is Portugese-man- of-war?
A)
Physalia
B)
Euphasids
C)
Sagittal
D)
None of these
Physalia physalis is Portuguese man-of-war, a colonial siphonophore.
Fisheries • 2017 • Technical Paper-III
Without which of the following staining agent Gram staining can also be performed?
A)
Crystal violet
B)
95% alcohol
C)
Gram’s Iodine
D)
Safranine
Gram staining requires crystal violet (primary), iodine (mordant), alcohol (decolorizer); safranine counterstain can be omitted - Gram+ve still purple, Gram-ve appear unstained. So safranine optional.
Fisheries • 2017 • Technical Paper-III
An antioxidant occur naturally in fish :
A)
Creatin
B)
BHA
C)
Anserine
D)
Carnosine
Anserine (methyl carnosine) and carnosine are endogenous dipeptide antioxidants in fish muscle; BHA is synthetic. Most cited is Anserine/Carnosine, here Anserine.
Fisheries • 2017 • Technical Paper-III
Choose the box that is similar to the box formed from the given sheet of paper (X).
A)
1 & 3 only
B)
1 & 4 only
C)
2 & 4 only
D)
3 & 4 only
Cube net folding question image not provided; placeholder 1 & 3 only typical opposite faces logic.
Fisheries • 2017 • Technical Paper-III
What will come in place of the question mark (?) in the following sequence?
SEQUENTIAL EQUENTIAL EQUENTI ? QUEN
A)
QUENTI
B)
UENTI
C)
QUENT
D)
QUE
Pattern: remove 1 from start, then 2 from end alternately: SEQUENTIAL -> EQUENTIAL (remove S) -> EQUENTI (remove AL) -> QUENTI (remove E) -> QUEN (remove TI). So ?=QUENTI.
Fisheries • 2017 • Technical Paper-III
What will come in place of the question mark (?) in the following equation?
39.8% of 400 + ?% of 350 = 230
A)
15
B)
20
C)
24
D)
25
39.8%*400=159.2; 230-159.2=70.8; 70.8/350=20.22%≈20%.
Fisheries • 2017 • Technical Paper-III
The term ‘Bio-chemistry’ is coined by :
A)
Wilhem Kuhne
B)
Carl Neuberg
C)
B. Franklin
D)
Neelson
Term biochemistry coined by Carl Neuberg in 1903; Kuhne coined enzyme.
Fisheries • 2017 • Technical Paper-III
Prostaglandins are
A)
Hormones
B)
Eicosanoids
C)
Enzymes
D)
None of these
Prostaglandins are eicosanoids derived from 20-C arachidonic acid; considered local hormones/autacoids.
Fisheries • 2017 • Technical Paper-III
White spot formation in salt cured fish is due to formation of :
A)
Disodium hydrogen phosphate
B)
Dimagnesium hydrogen posphate
C)
Dipotassium hydrogen phosphate
D)
Dicalcium hydrogen phosphate
White spots in salt-cured fish from calcium phosphate precipitation, mainly dicalcium hydrogen phosphate with salt impurities.
Fisheries • 2017 • Technical Paper-III
Metallothionin is a protein which is rich in :
A)
Methionine
B)
Cysteine
C)
Histidine
D)
None of these
Metallothionein has ~30% cysteine residues binding heavy metals.
Fisheries • 2017 • Technical Paper-III
Coagulase test is a confirmatory test for :
A)
Streptococcus sp
B)
Shigella sp
C)
Staphylococcus sp
D)
E.coli
Coagulase test differentiates Staphylococcus aureus (positive) from others.
Fisheries • 2017 • Technical Paper-III
The first commercial production of fish silage was started in :
A)
Sweden
B)
Mexico
C)
Norway
D)
Denmark
First commercial fish silage production started in Denmark in 1930s-40s (also Sweden/Norway pioneered).
Fisheries • 2017 • Technical Paper-III
The basic sampling unit for fish population dynamics is:
A)
Species
B)
Stock
C)
Population dynamic
D)
Cohort
Stock is basic unit for fish population dynamics and stock assessment.
Fisheries • 2017 • Technical Paper-III
Process of hydrogenation to convert :
A)
Saturated fatty acid to unsaturated fatty acid
B)
Unsaturated fatty acid to saturated fatty acid
C)
Saturated amino acid to unsaturated amino acid
D)
Unsaturated amino acid to saturated amino acid
Hydrogenation adds H2 to unsaturated fatty acids converting them to saturated.
Fisheries • 2017 • Technical Paper-III
Which of the following compound is used to detect textural degradation in fish and also used to measure the quality of frozen fish?
A)
TMA
B)
Both TMA and DMA
C)
DMA
D)
K-value
DMA (dimethylamine) formed from TMAO by endogenous enzymes indicates freeze denaturation and texture loss.
Fisheries • 2017 • Technical Paper-III
The process of conversion of glycogen into glucose is called :
A)
Glycogenolysis
B)
Glycogenesis
C)
Glycolysis
D)
Gluconeogenesis
Glycogenolysis = glycogen -> glucose; glycogenesis reverse, glycolysis glucose -> pyruvate.
Fisheries • 2017 • Technical Paper-III
In tropical fishes, age could be calculated from:
A)
Vertebra
B)
Length frequency analysis
C)
Otolith
D)
All of these
Tropical fish lack clear annuli on scales due to continuous growth; age estimated via length-frequency (Petersen), otolith daily rings, vertebrae.
Fisheries • 2017 • Technical Paper-III
Crustaceans are more susceptible to bacterial spoilage due to present of :
A)
Higher amount of calcium
B)
Higher amount of fatty acid
C)
Higher amount of free amino acid
D)
Lower amount of fat
Crustaceans have higher free amino acids, promoting rapid bacterial spoilage.
Fisheries • 2017 • Technical Paper-III
The time required to kill a particular bacteria at a particular temperature is called :
A)
Z-value
B)
F-value
C)
D-value
D)
None of these
D-value = decimal reduction time to kill 90% at given temp; F-value sterilization, Z-value temp change for 10-fold D change.
Fisheries • 2017 • Technical Paper-III
Body’s energy crisis favour :
A)
Gluconeogenesis
B)
Glycolysis
C)
Glycogenesis
D)
None of these
Energy crisis/low ATP/high glucagon stimulates gluconeogenesis to maintain blood glucose; glycolysis and glycogenesis consume/store energy.
Fisheries • 2017 • Technical Paper-III
Storage of solar energy :
A)
Glycogen
B)
Starch
C)
Cellulose
D)
None of these
Starch is storage form of solar energy in plants.
Fisheries • 2017 • Technical Paper-III
In a row of forty children, P is thirteenth from the left end and Q is ninth from the right end. How many children are there between P and R if R is fourth to the left of Q?
A)
13
B)
14
C)
15
D)
12
Q position from left =40-9+1=32, R=32-4=28, P=13, between =28-13-1=14.
Fisheries • 2017 • Technical Paper-III
If the letters in the word POWERFUL are rearranged as they appear in the English alphabet, then the position of how many letters will remain unchanged after the rearrangement?
A)
None
B)
One
C)
Two
D)
Three
Alphabetical E F L O P R U W vs P O W E R F U L; only position 7 (U) unchanged => One.
Fisheries • 2017 • Technical Paper-III
If 40% of a number is equal to three-seventh of another number, and sum of these two numbers is 145, then which of them is the larger number?
A)
85
B)
70
C)
75
D)
65
2/5 x =3/7 y => x=15/14 y, x+y=145 => y=70 x=75 larger=75.
Fisheries • 2017 • Technical Paper-III
The action of most of the spoilage bacteria is preventing at……salt concentration level
A)
3 %
B)
15 %
C)
10 %
D)
20 %
Most spoilage bacteria inhibited ~10-15% NaCl; halophiles only above, 15% prevents most.
