Biology Gk Top 100 Questions 2020-24

Q.1- Name the largest bone in human body?

Ans- Femur.

Q.2- Name the smallest muscle in the human body ?

Ans- Stapedius.

Q.3- What is the semi-circular area of nail called ?

Ans- Lunula.

Q.4- Name the largest endocrine gland in body ?

Ans- Thyroid gland.

Q.5- Name the largest vein in body ?

Ans- Interior venacava.

Q.6- Why blood do not clot inside the blood vessel?

Ans- Presence of heparin.

Q.7- Name the smallest bone -in-human body ?

Ans- Stapes.

Q.8- In human body which organ has maximum power of regeneration

Ans- Liver

Q.9- Which component of blood is responsible for clotting ?
Ans- Platelets.

Q.10- Name the smallest endocrine gland in human body ?

Ans- Pituitary gland.

Q.11- What is the total number of bones in human body ?

Ans- 206.

Q.12- What is the Number of chromosomes in human cell ?
Ans- 46 (23 pairs).

Q.13- Which is the Largest part of brain ?
Ans- Cerebrum.

Q.14- What is the Average length of small lntestine ?

Ans- 7 mt.

Q.15- What is the Average length of large intestine?

Ans- 1.5 mt.

Q.16- Which test helps in diagnosis of cancer?

Ans- Biopsy.

Q.17- Colour of eye depends upon pigment present in ?

Ans- Iris.

Q.18- Name the largest white blood corpuscle ?

Ans- Monocyte

Q.19- Our bones and teeth are made of which element?

Ans- Tricalcium phosphate

Q.20- Transport of oxygen in human body by..?

Ans- Blood.

Q.21- What is life span of RBC?

Ans- 120 days.

Q.22- Failuare of which gland results in diabetes in human body?

Ans- Pancreas.

Q.23- At very high altitude the RBC In the human body will?

Ans- Increase in number

Q.24- Blood is red in colour due to the presence of ...?

Ans- Haemoglobin.

Q.25- In human universal donor has the blood group of ....?

Ans- O.

Q.26- Universal recipient has the blood group of ...?
Ans- AB.

Q.27- Bones are connected by which tissue?

Ans- Ligaments.

Q.28- Myopia and hypermetropia diseases connected with.. ?

Ans- Eyes.

Q.29- Which Instrument is used to measured blood pressure ?

Ans- Sphygmomanometer.

Q.30- In human body where is tibia bone found?

Ans- Leg.

Q.31- Which hormone is called emergency hormone in human body ?

Ans- Adrenaline gland.

Q.32- Name the most commonly broken bone in the human body ?

Ans- Clavicle (collarbone).

Q.33- Image formed on which part of eye ?

Ans- Retina.

Q.34- In human body dialysis is used for Failure of which organ?

Ans- Kidney.

Q.35- What is the main constituent of hemoglobin ?

Ans- Iron.

Q.36- In human eye the least distance of distinct vision is ?

Ans- 25 cm.

Q.37- Which isotope of cobalt is used in detection of cancer ?

Ans- Cobalt-60.

Q.38- ECG is used for the diagnosis of ailments of ..?

Ans- Heart.

Q.39- Which is the largest blood vessel in human body ?

Ans- Aorta.

Q.40- Which is the largest blood pressurel human body?

Ans- Aorta.

Q.41- Name the longest muscle in human body?

Ans- Sartorius muscle.

Q.42- Thalassemia is hereditary diseases which affects ?

Ans- Blood.

Q.43- Name the largest joint in the human body ?

Ans- Knee.

Q.44- Where is mendible bone is located ?

Ans- Jaw.

Q.45- In human body formation of red blood cells occur at ?

Ans- Bone marrow.

Q.46- What is the body temperature of healthy human ?

Ans- 36.9 or 37 degree.

Q.47- How Many basic tastes can humans sense ?

Ans- 5(sweet, sour, bitter, salty and umami).

Q.48- what is the another name  of human voice box ?

Ans- Larynx.

Q.49- Which gland is associated with diseases goiter ?

Ans- thyroid gland.

Q.50- DPT vaccine is helpful in prevent the disease...?

Ans- Diphtheria, pertussis, tetanus


Q.51- Which organ filters blood in human body?

Ans- Spleen.

Q.52 What is called as suicidal bags of the cells?

Ans- Lysosomes.

Q.53- Which part of cell is called power house of cell

Ans- Mitochondria...

Q.54- Which virus is related with AIDS ?

Ans- Retro virus.

Q.55- Blood cancer is also called as ?
Ans- Leukaemia.

Q.56- Medulla oblongata is a part of human ....?

Ans- Brain.

Q.57- What is the average heartbeat of human?

Ans- 72 per min.

Q.58- Where is pituitary gland is situated in human body ?

Ans- The base of the brain

Q.59- Heart is made up of which muscles

Ans- Cardiac muscles

Q.60- what is basic unit of nervous system ?

Ans- Neuron.

Q.61-  Which part of brain controls emotional reactions in our body?

Ans- Hypothalamus.

Q.62- Which tissue in human where no cell division occurs after birth is

Ans- Nerves.

Q.63- Name the acid which is secreted in stomach?

Ans- HCI.

Q.64- Which blood corpuscles are popularly called as soldiers of the body?

Ans- WBC.

Q.65- The connective tissue that connects a muscle to a bone?

Ans- Tendon.

Q.66- Which is the largest gland in human body?

Ans- Liver.

Q.67- Which organ of human body secretes Insulin

Ans- Pancreas.

Q.68- Blood is which type of tissue ?

Ans- Connective tissue.

Q.69- Which organ of the body never rests?

Ana- Heart.

Q.70- Name the male sex hormone ?

Ans- Testosterone.

Q.71- What is the dental formula of adult human ?

Ans- 2123/2123.

Q.72- Red blood corpuscles are also called ?

Ans- Erythrocyte.

Q.73- How many chambers in human heart ?
Ans- 4(2 atria and 2 ventricle ).

Q.74- Animals or human with spines are called ..?

Ans- Vertebrates.

Q.75- What is the important function of ears provide other than hearing?

Ans- Balance.

Q.76- What is the word for a person born without skin and eye pigmentation?

Ans- Albino.

Q.76- How much blood is present in human body

Ans- 4.5 to 5.5 litres.

Q.77- How much blood is present in human body
Ans- 4.5 to 5.5 litres.

Q.78- Which part of human Body is affected from diseases called glaucoma?
Ans- Eyes.

Q.79- In human body which gland produces hormones?

Ans- Endocrine gland.

Q.80- Which gland produces tears in human2

Ans- Lacrimal gland.

Q.81- Which gland of human body is called as master gland ?

Ans- Pituitary gland.

Q.82- In female phenomenon of releasing ovum from ovary is called ?

Ans- Ovulation.

Q.83- What is the ph of blood?

Ans- Between 7.35 to 7.45

Q.84- Which is the longest nerve in human body?

Ans- Sciatic.

Q.85- Name the main organ of cardiovascular system?

Ans- Heart.

Q.86- What is the other name of alimentary canal?

Ans- Digestive tract.

Q.87- If we lined up all the neurons in the brain end to end, what is the stretch length ?

Ans- 1000 kms.

Q.88- Name the scientist who discovered Penicillin?

Ans- Alexander fleming.

Q.89- In human body where is pharynx located ?
Ans-Neck.

Q.90- Which tube passes the food from pharynx to stomach ?

Ans- Esophagus.

Q.91- What is helpful in prevening the bleeding of gums?

Ans- Ascorbic Acid.

Q.92- In human body which organ has minimum power of regeneration

Ans- Neurons and nerve cells.

Q.93- Name the largest human cell

Ans- Ovum.

Q.94- What is called as digestive bag of the cell ?

Ans- Lysosome.

Q.95- Name the Largest lymphatic organ ?

Ans- Spleen.

Q.96- What is the composition of blood?

Ans- Plasma 60% and blood corpuscles 40 %.

Q.97- What is the purpose of valves in veins?

Ans- To prevent back flow of blood.

Q.99- Which cell produces antibodies in human body?

Ans- Lymphocytes.

Q.100- Which part of brain is also known as "little brain"?

Ans- Cerebellum.