Biology : Practice Questions and Answers

Pneumotaxic center is

Hiccup is due to

Haldane effect refers to

When Bohr effect occurs due to increased $CO_2$ tension, Oxygen affinity of Hb decreases . The reason for increased $CO_2$ tension is

Methamoglobin is the oxidized form of Hemoglobin that can not deliver oxygen and has a Bluish colour thatimpart a Cyanotic hue to tissues. It appears when

Respiratory alkalosis is the increase in blood Ph and can be treated using the drug Acetazolamide which blocks Carbonic anhydrase enzyme. The main cause of Respiratory alkalosis is

The Pseudostratified ciliated columnar epithelium lining the trachea is composed of

In Carbon monoxide poisoning, Hemoglobin shows about 250 times greater affinity with $CO_2$ than oxygen and Carbon The immediate remedy is monoxy heamoglobin( COHb ). This causes Oxygen starvation and Asphyxi

Chloride shift occurs from the plasma to the RBC and is meant for

Foetal hemoglobin has a Sigmoid dissociation curve which is shifted to left relative to adult Hb because

Double Bohr effect ( Oxygen curves for maternal and foetal Hb move apart in opposite directions ) occurs in

Most of the Antibiotics against Tb are not effective as the Tubercle bacterium has a resistive covering. One of the following drug is effectively used to control TB

Chronic Obstructive Pulmonary Disease ( COPD ) includes

Inflamation of the lung covering causing severe chest pain is

2,3 DPG is synthesized from 3- phosphoglyceraldehyde through

Hemoglobin affinity for Oxygen is ………………….to the P50 ( $O_2$ tension that produces 50% saturation of Hb )

Fick's law of diffusion is related to

TB skin test is called " Scatch test or Mantoux test " in which Tuberculin Purified Protein Derivative ( PPD )is injected sub cutaneously This test is based on

Expiratory muscles contract at the time of

The combination of Hemoglobin with Oxygen in the blood can be promoted by