Question Bank
BET Marine Biotechnology Exam - English
Duration: 180 · Questions: 100 · Max Marks: 300 · Language: 1
Aptitude & General Biotechnology
1
In ruby laser, the stimulated emission is due to transition from
2
A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is
3
convex lens made of glass has focal length 0.15m in air. If the refractive index of glass is 3/2, and that of water is 4/3 the focal length of lens when immersed in water is
4
Two sources are said to be coherent if they produce waves
5
Three resistors 1 Ω, 2 Ω, 3Ω resistor a 3 V battery is connected. The current through 3 Ω resistor is -
6
10-6 M NaOH is diluted 100 times. The pH of the diluted base is
7
In the electrolysis of acidulated water, it is desired to obtain 1.12 cc of hydrogen per second under STP condition. The current to be passed is
8
The one which decreases with dilution is
9
Vapour pressure of pure ‘A’ is 70 mm of Hg at 25oC. It forms an ideal solution with ‘B’ in which mole fraction of A is 0.8. if the vapour pressure of the solution is 84 mm of Hg at 25oC, the vapour pressure of pure ‘B’ at 25oC is
10
A 6% solution of urea is isotonic with
11
The respiratory quotient during cellular respiration would depend on
12
Which of the following is not a green - house gas ?
13
Both husband and wife have normal vision though their fathers were colorblind and mothers did not have any gene for colorblindness. The probability of their daughters becoming colorblind is
14
An animal, which has both exoskeleton and endoskeleton structures is a
15
Identify the group, which includes animals all of which give birth to young ones directly?
16
The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?
17
Which of the following numbers is irrational ?
18
356 x 936 – 356 x 836 = ?
19
Arrange in descending order: 5/8, 7/10, 3/4
20
What is (3^{4} times 9^{2}) ?
21
If 34X-2 = 729, then find the value of X.
22
Convert 0.6 into fraction ?
23
The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?
24
If a and b are positive integers, such that ab = 125, then (a-b)a+b-4 = ?
25
If x*y = x2 + y2 – xy, then value of 9*11 is
26
What is the central dogma of molecular biology?
27
What type of bond connects amino acids in a protein?
28
Which type of bond links nucleotides in a nucleic acid?
29
What type of bond connects monosaccharides in a carbohydrate?
30
What type of bond connects fatty acids to glycerol in a lipid?
31
Which force is a weak, short-range attraction between fluctuating dipoles?
32
Which force involves the attraction between oppositely charged ions?
33
Which force is a weak dipole-dipole interaction where hydrogen is involved?
34
Which effect drives nonpolar molecules to aggregate in an aqueous environment?
35
What is a common secondary structure in proteins that resembles a coiled spring?
36
What is a common secondary structure in proteins that resembles a pleated sheet?
37
What is a short, U-shaped secondary structure in proteins?
38
What plot shows the distribution of phi and psi angles in a protein structure?
39
What are distinct functional and structural units in a protein?
40
What is the arrangement of multiple protein subunits in a complex?
41
Which DNA conformation is a left-handed double helix?
42
Which DNA conformation is the most common form found in cells?
43
Which DNA conformation is a dehydrated form of DNA?
44
What are catalytic RNA molecules called?
45
What are regulatory RNA sequences that bind to metabolites?
46
What is the primary structure of a protein?
47
What force contributes to the stability of the DNA double helix?
48
Which amino acid has a sulfur-containing side chain?
49
Which amino acid has an aromatic side chain?
50
What is the backbone of DNA made of?
Marine Biotechnology
1
The region of the ocean that receives sufficient sunlight for photosynthesis is called the:
2
Which of the following is the most stable marine environment?
3
The salinity of seawater is approximately:
4
5%
b)
5
0%
c)
6
5%
d)
7
Which of the following marine environments is characterized by extreme temperature variations and high biodiversity?
8
Thermocline in oceans refers to:
9
Which of the following is a primary producer in the marine food chain?
10
Which pigment is responsible for the green color in most marine algae?
11
Which marine plant is known for its ability to stabilize coastal sediments?
12
Mangroves play a crucial role in:
13
Which type of algae is rich in carrageenan, a substance used in food processing?
14
Zooplankton are primarily:
15
The most abundant type of zooplankton in marine ecosystems is:
16
Which zooplankton species is a crucial food source for baleen whales?
17
Holoplankton are organisms that:
18
Which of the following is a bioluminescent zooplankton?
19
Crustaceans are characterized by:
20
Which of the following is a major characteristic of molluscs?
21
The exoskeleton of crustaceans is primarily composed of:
22
Which of the following is a filter-feeding mollusc?
23
Which marine crustacean is known for its strong claws and powerful bite?
24
Which of the following is a cartilaginous fish?
25
Marine bony fishes maintain their buoyancy using:
26
The largest fish in the ocean is the:
27
Marine mammals such as whales and dolphins are classified as:
28
Echolocation is commonly used by which marine species?
29
Filter feeders in marine ecosystems primarily consume:
30
Which marine organism follows external fertilization for reproduction?
31
In marine fishes, the term "broadcast spawning" refers to:
32
Which marine species displays complex social behavior and communication skills?
33
The primary mode of respiration in marine molluscs is via:
34
Which marine animal is known to exhibit parental care by guarding its eggs?
35
The bioluminescent organ in certain marine organisms is called:
36
Which marine mammal is known for its unique feeding behavior called "bubble-net feeding"?
37
Which of the following adaptations helps deep-sea fish survive extreme pressure conditions?
38
Bioluminescence in marine organisms is primarily used for:
39
Which feature helps marine mammals conserve body heat in cold environments?
40
Which marine species exhibits countershading as a protective adaptation?
41
Which adaptation allows marine birds like albatrosses to travel long distances efficiently?
42
In a marine food web, zooplankton typically occupy which trophic level?
43
Which of the following is an example of a keystone species in marine ecosystems?
44
Coral reefs are often referred to as:
45
Which organism is at the base of the deep-sea hydrothermal vent ecosystem?
46
Which type of symbiotic relationship exists between clownfish and sea anemones?
47
Which marine organism is commonly used in biomedical research due to its transparent body structure?
48
The compound ‘Squalene,’ extracted from shark liver oil, is widely used in:
49
Marine sponges are known for producing:
50
Which marine organism is known for producing the powerful neurotoxin called ‘saxitoxin’?