Bats & humming birds belong to___________?
A. Endotherms
B. Ectotherms
C. Heterotherms
D. Homeotherms
Biology Mcqs
A stone measuring 0.4 cm, blocking the outlet of renal pelvis resulting in mild to moderate tract obstruction. Which of the following technique will be opted to remove this stone?
A stone measuring 0.4 cm, blocking the outlet of renal pelvis resulting in mild to moderate tract obstruction. Which of the following technique will be opted to remove this stone?
A. Kidney surgery
B. Burring a hole and removing the stone manually (nephrolithotomy)
C. Extracorporeal Shock wave lithotripsy
D. None of these
Which of the vascular channels are related to Juxtramedullary nephrous only?
Which of the vascular channels are related to Juxtramedullary nephrous only?
A. Afferent and efferent arterioles
B. Peritubualr capillaries
C. Vasa nervosa
D. Vasa recta
In Urea cycle __________ ammonia molecules combine with 1 CO2 molecule to form 1 molecule of urea.
In Urea cycle __________ ammonia molecules combine with 1 CO2 molecule to form 1 molecule of urea.
A. 1
B. 2
C. 3
D. 4
Which of the following is most toxic?
Which of the following is most toxic?
A. Ammonia
B. Urea
C. Uric acid
D. Trimethylamine oxide
In osmosis water molecules move from area of _____________ through semipermeable memberane?
In osmosis water molecules move from area of _____________ through semipermeable memberane?
A. Higher solute concentration to lower solute concentration
B. Lower solute concentration to higher solute concentration
C. Lower solvent concentration to higher solvent concentration
D. All of these
Normal body temperature in mamals like human beings is____________?
Normal body temperature in mamals like human beings is____________?
A. 26 – 28°C
B. 36 – 38°C
C. 46 – 48°C
D. 56 – 58°C
Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?
Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?
A. Hagfish
B. Fresh water fishes
C. Bony fishes
D. None of these
Which of the following statement about Homeostasis is incorrect?
Which of the following statement about Homeostasis is incorrect?
A. There is a definite control system that regulates the homeostatic activities
B. Homeostatic mechanisms keep the internal environment fixed despite of wide changes in external environment
C. Because of this the fluctuations of internal environment are of extremely narrow range as compared to that of external environment
D. All are correct
Which adaptation is acquired by plants of cooler areas to prevent lipid crystal formation in cell membrane?
Which adaptation is acquired by plants of cooler areas to prevent lipid crystal formation in cell membrane?
A. Change in membrane protein composition.
B. Change in the solute composition of the cell membrane which prevents crystallization.
C. Increase in proportion of unsaturated fatty acids.
D. Development of heat shock proteins.