BioNotesBody Fluids and Circulation - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of cardiac cycle, ECG, and blood coagulation.
Locomotion and Movement - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of the sliding filament theory, muscle contraction, and skeletal joints.
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Online
Practice questions testing deep understanding of counter-current mechanism, RAAS, and kidney function.
Q1. The human kidney can produce urine that is nearly four times more concentrated than the initial blood plasma. Explain the specific role of the "Loop of Henle" and the "Counter-Current Mechanism" in making this highly concentrated urine possible.
Q2. If a person suffers a severe hemorrhage (massive blood loss), their blood pressure drops dangerously low. Explain how the kidneys detect this and use the RAAS (Renin-Angiotensin-Aldosterone System) pathway to try and raise the blood pressure back to normal.
Q3. Assertion (A): Birds and terrestrial reptiles excrete their nitrogenous waste primarily as uric acid, in the form of a white paste. Reason (R): Uric acid is the least toxic form of nitrogenous waste and requires almost zero water to be excreted, which is a critical evolutionary adaptation for conserving water in dry terrestrial environments or during flight.
Body Fluids and Circulation - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of cardiac cycle, ECG, and blood coagulation.
Locomotion and Movement - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of the sliding filament theory, muscle contraction, and skeletal joints.