Q1 · hard · AI-verified
In human blood, CO₂ is transported from tissues to the lungs primarily in which form?
- Bound to haemoglobin as oxyhaemoglobin
- Dissolved directly in plasma as CO₂ gas
- As bicarbonate ions (HCO₃⁻) in plasma
- Bound to plasma proteins as carbamino compounds only
Q2 · hard · AI-verified
In the human excretory system, which part of the nephron is primarily responsible for selective reabsorption of glucose and amino acids from the glomerular filtrate?
- Collecting Duct
- Proximal Convoluted Tubule (PCT)
- Loop of Henle
- Distal Convoluted Tubule (DCT)
Q3 · hard · AI-verified
In the human digestive system, which enzyme present in pancreatic juice is responsible for the digestion of proteins into peptides?
- Pepsin
- Lipase
- Trypsin
- Amylase
Q4 · easy · AI-verified
In the human heart, which chamber pumps oxygenated blood to all parts of the body?
- Left atrium
- Right atrium
- Left ventricle
- Right ventricle
Q5 · hard · AI-verified
Which of the following hormones is secreted by the pancreas and specifically promotes the conversion of glycogen back to glucose (glycogenolysis) in the liver?
- Insulin
- Adrenaline
- Cortisol
- Glucagon