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Which of the following immunoglobulin can be suitable for diagnostic imaging or blocking molecular interactions?

A

IgG3

B

IgG2

C

IgG1

D

IgG4

Correct Answer: IgG4

The human IgG4 is not active in the CDC (Complement Dependent Cytotoxicity) or ADCC (Antibody-Dependent Cellular Cytotoxicity), and therefore it can be suitable for diagnostic imaging or blocking molecular interactions. IgG3, IgG2, and IgG1 are not suitable for diagnostic imaging or blocking molecular interactions.

Consider the following statements regarding the satellite imaging:
1. The satellite orbit is fixed in the inertial space
2. During successive across-track imaging, the earth rotates beneath the sensor
3. The satellite images a skewed area
Which one of the following statements is/are correct?

A

1, 2, 3

B

1, 3

C

2, 3

D

1, 2

Which of the following option is correct for the given statements about gray scale and binary imaging? Statement 1: All binary images are gray scale images. Statement 2: In gray scale imaging, every pixel is represented by 8 bits.

A

F, F

B

T, F

C

F, T

D

T, T

Five energy levels of a system including the ground state are shown below. Their lifetimes and the allowed electric dipole transitions are also marked.

Which one of the following transitions is the most suitable for a Continuous Wave (CW) laser?

A

1 → 0

B

2 → 0

C

4 → 2

D

4 → 3

Imaging systems having physical artefacts embedded in the imaging sensors produce a set of points called __________

A

Tie Points

B

Control Points

C

Reseau Marks

D

None of the Mentioned

Determine the correctness or otherwise of the following Assertion (A) and Reason (R).
Assertion: An antigen recognized by one immunoglobulin subtype is not recognized by any other subtype.
Reason: Immunoglobulin subtypes differ from each other both in the variable and in the constant regions.

A

Both (A) and (R) are true and (R) is the correct reason for (A)

B

Both (A) and (R) are true but (R) is not the correct reason for (A)

C

Both (A) and (R) are false

D

(A) is true but (R) is false

Statement 1: Blocking and pearling of barley are both abrasive processes. Statement 2: After blocking and pearling, they’re cut into portions called grits.

A

True, False

B

True, True

C

False, False

D

False, True

Emulsion – blocking and water – blocking is usually not a problem in _____ reservoirs except during acidizing.

A

Sandstone

B

Shale

C

Evaporites

D

Limestone and Dolomite

Blocking of enzyme action by blocking its active site is called as:

A

Allosteric inhibition

B

Feedback inhibition

C

Competitive inhibition

D

Non-competitive inhibition

Estimate the diffusion coefficient for ammonia in air t 25 degree Celsius temperature and one atmospheric pressure. For ammonia, Molecular weight = 17 Molecular volume = 25.81 cm3/gm mole For air, Molecular weight = 29

A

0.4880 cm2/s

B

0.3880 cm2/s

C

0.2880 cm2/s

D

0.1880 cm2/s

What is the average molecular weight of a gas containing 20% N2 (molecular wt. = 28) and 80% SO2 (molecular wt. = 64)?

A

28.4

B

56.8

C

24.4

D

48.8