VFA Mixed Practice Test #706

Question 1

mRNA:‌​‍

Accepted Answer

Protein synthesis template — Messenger RNA carries code.‌​‍

Answer

Enzyme

Answer

DNA storage

Answer

Membrane

Question 2

Optical fibres transmit signals using the principle of:‌​‍

Accepted Answer

Total internal reflection — Optical fibres rely on repeated total internal reflection to guide light.‌​‍

Answer

Diffraction

Answer

Refraction

Answer

Polarisation

Question 3

Pulikali (Tiger dance) at:‌​‍

Accepted Answer

Onam in Thrissur — Performed during Onam in Thrissur.‌​‍

Answer

Thrissur Pooram

Answer

Kerala Piravi

Answer

Vishu

Question 4

Cochin port developed by:‌​‍

Accepted Answer

Robert Bristow — Robert Bristow created Willingdon Island for port.‌​‍

Answer

Portuguese

Answer

Dutch

Answer

British

Question 5

The 74th Amendment deals with:‌​‍

Accepted Answer

Municipalities — 74th Amendment (1992) gave constitutional status to urban local bodies (municipalities).‌​‍

Answer

Panchayats

Answer

Judiciary

Answer

Education

Question 6

Jahangir's wife who effectively ruled was:‌​‍

Accepted Answer

Nur Jahan — Nur Jahan wielded significant political power during Jahangir's reign. ‌​‍She is considered one of the most powerful women in Mughal history.

Answer

Mumtaz Mahal

Answer

Hamida Banu

Answer

Jodha Bai

Question 7

A patient undergoing treatment for hepatitis shows elevated levels of serum Alanine Transaminase (ALT) and Aspartate Transaminase (AST). What does this finding primarily indicate?

Accepted Answer

B. Hepatocellular damage — ALT and AST are intracellular enzymes found in high concentrations in hepatocytes. Their elevation in serum indicates damage to liver cells, causing them to leak into the bloodstream. Impaired bile flow is typically indicated by elevated ALP and bilirubin, while kidney and bone issues involve different markers.

Answer

A. Impaired bile flow

Answer

C. Bone disease

Answer

D. Kidney dysfunction

Question 8

Lithium salts are primarily used in the treatment of bipolar disorder. Its therapeutic action is believed to be primarily due to its ability to:

Accepted Answer

C. Modulate intracellular signaling pathways, particularly those involving inositol phosphate. — Lithium's mechanism of action is complex but is primarily associated with its ability to modulate intracellular signaling pathways, especially by interfering with the inositol phosphate pathway and affecting G-protein coupled receptors. It does not directly block dopamine receptors or enhance GABAergic transmission as its primary mechanism, nor does it inhibit MAO, which is the target of MAO inhibitors.

Answer

A. Block dopamine receptors directly.

Answer

B. Enhance GABAergic neurotransmission.

Answer

D. Inhibit monoamine oxidase activity.

Question 9

Transpose of A: (A^T)_ij =‌​‍

Accepted Answer

A_ji — Rows become columns. (AB)^T = B^T·A^T. Symmetric matrix: A = A^T.‌​‍

Answer

A_ij

Answer

0

Answer

-A_ij

Question 10

Peristalsis:

Accepted Answer

Wave-like muscle contractions in food tube — Moves food through alimentary canal.

Answer

Digestion

Answer

Blood flow

Answer

Breathing

VFA Mixed Practice Test #706