Biology important points notes | Biology solved mcqs

 :. _*BIOLOGY IMPORTANT POINTS----✍️*_ 

What is the estimated no. of cells that the human body is composed of?

*Ans: 37.2 trilion*

What is the amount of blood contains in the human body?

*Ans: 5-6 litres.*

With how many bones the human skeletal system is composed of in adult age?

*Ans: 206*

What is the largest organ in the human body?

*Ans: skin*

What is the largest gland?

*Ans: liver*

How many blood groups in the ABO system?

*Ans: 4*

How many chambers in the human heart?

*Ans: 4*

What is the average blood pressure of human being?

*Ans: 120/80 mmHg*

What is the weight of the brain?

*Ans: 1.36 kg*

What is the name of covering of central nervous system?

*Ans: meninges*

Which part of the brain controls anger, fear, body temperature?

*Ans: hypothalamus*

Which part occupies 80% of the brain?

*Ans: cerebram*

what is the function of retina?

*Ans: to create reflection of an image*

what is the master gland of the body?

*Ans: pituitary gland*

.

what is the amount of urine that a healthy human passes each day?

*Ans: 1500 ml*

what is the Ph of urine?

*Ans: 6*

what is the weight of heart in an average human being?

*Ans: 300 gm*

what is the covering of heart?

*Ans: pericardium*

How many ribs in the human thorax?

*Ans: 12 pairs*

What is the percentage of calcium stored in the bones?

*Ans: 97%*

Which acid is secreted from stomach?

*Ans: HCl*

What is the amount of gastric juice secreted from stomach daily?

*Ans: 2 litres*

What is the mixed gland of the human body?

*Ans: pancreas*

What is the function of thrombocyte?

*Ans: hemostasis*

Who invented human blood grouping system?

*Ans: Carl Landsteiner*

What kind of blood is carried through artery?

*Ans: oxygenated blood*

What is the function of hemoglobin?

*Ans: transport oxygen*

Who invented Insulin?

*Ans: Edward Sharpy Schafer*

What is considered as the ‘Power house of cell’?

*Ans: Mitochondria_*