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Easy Human Body Quiz Questions One Liner with Answers for Students
What is not required for photosynthesis?
Oxygen
What substance promotes cell growth and specialization in plants?
Cytokinins
Who created the first polio vaccine?
Jonas E. Salk
Which was the first antibiotic discovered by Alexander Fleming in 1928?
Penicillin
The abnormal increase in the number of red blood cells is called?
Polycythemia
What organ destroys red blood cells after their average lifespan of 120 days?
Spleen
The most abundant type of white blood cells (60-65%) are called?
Neutrophils
What type of immunity is inherited from birth?
Innate immunity
Which organ in the human body is responsible for the absorption of fats?
Small intestine
Red blood cells are primarily produced in which component?
Erythrocytes
What type of tissue is responsible for the growth of roots in plants?
Meristem
The outer covering of coconut shells is made of which type of tissue?
Sclerenchyma
What is the scientific name of modern humans?
Homo sapiens
How does reproduction occur in amoeba?
Binary fission
Who is known as the father of taxonomy?
Linnaeus
How many heart chambers do frogs have?
Two
Which is the longest bone in the human body?
Femur
What is the smallest bone in the human body?
Stapes
What type of plants do not produce flowers?
Gymnosperms
Tarsal bones are found in which part of the body?
Foot
Based on functional classification, how many types of joints are there in the human body?
3
How many layers does human skin have?
3
How many bones are there in the human face?
14
The outer covering of the root of the tooth is called?
Cementum
Which muscles are activated when the body experiences extreme cold?
Erector pili muscles
The strongest muscle in the body, based on its mass, is?
Jaw muscle
The largest lymphoid organ in the body is?
Spleen
Who discovered the process of blood circulation?
William Harvey
A normal systolic blood pressure reading is approximately?
120 mmHg
What is the term for swollen, inflamed veins in the rectal area?
Hemorrhoids
White blood cells are also known as?
Soldiers of the body
Which artery is longer compared to veins?
Pulmonary artery
The blood vessels that carry oxygenated blood away from the heart are called?
Arteries
A normal blood pressure reading is?
120/80 mmHg
The blood vessels that carry blood back to the heart are called?
Veins
An electrical examination of the heart is called?
Electrocardiogram
How many chambers does the human heart have?
Four
The right atrium receives blood from the body and pumps it into the lungs where it gets oxygenated. This blood vessel is called?
Pulmonary Artery
In a healthy person, the average amount of hemoglobin in the blood is approximately ….grams per 100 ml of blood?
12-16 grams
The liquid portion of blood that carries cells and proteins throughout the body is called?
Plasma
Which part of the body is responsible for the production of red blood cells?
Bone marrow
The optimal pH level of human blood is between?
7.0 to 7.8
The glomerulus and Bowman’s capsule are part of which organ?
Kidney
Which organ is responsible for removing nitrogenous waste from the body?
Kidney
The tube that carries urine from the kidney to the bladder is called?
Ureter
The center in the brain responsible for thirst, hunger, and other bodily sensations is part of which structure?
Hypothalamus
The medulla oblongata is a part of which system?
Nervous system
The eye of a human functions like a camera. The sensory screen where light forms an image is called?
Retina
The posterior part of the brain is not a part of which structure?
Hypothalamus
The fluid between joints that allows easy movement is known as?
Synovial fluid
The largest part of the human brain is?
Cerebrum
Which part of the brain controls thinking, intelligence, memory, and learning abilities?
Cerebrum
Which part of the brain helps maintain balance and coordination?
Cerebellum
Which part of the brain controls posture, movement, and equilibrium?
Cerebellum
The brain is a part of which system?
Nervous system
Dendrites and axons are parts of which type of cell?
Nerve cell
The smallest bone in the human body is?
Stapes
The important joint where the skull meets the neck is called?
Atlas joint
An example of a ball-and-socket joint in the human body is?
Shoulder joint
How many bones are present in the human hand?
27 bones
Movable joints between two bones, like in the elbow, are called?
Synovial joint
An example of voluntary muscles is?
Muscles controlling the movement of the eyes
Which organ is responsible for coordination between hand and eye movements?
Brain
Which type of joint allows movement in only one direction?
Hinge joint
The femur bone in the human body is also known as?
Thigh bone
The fibrous tissue that connects bone to bone is called?
Ligament
Glucocorticoids are not secreted by which part of the human body?
Lungs
Which hormone is not classified as a steroid?
Vasopressin
How many parathyroid glands are present behind the thyroid gland?
Four
Which part of the brain controls motor functions and balance?
Cerebellum
The largest bone in the human body is?
Femur
The human digestive system receives digestive enzymes from which organ?
Small intestine
How many canine teeth does an adult human have?
Four
The valve between the small intestine and the large intestine is called?
Ileocecal valve
Which organ stores bile juice to aid in digestion?
Gall bladder
The end product of carbohydrate digestion is?
Glucose
The protrusion in the small intestine that looks like a small finger is called?
Appendix
Which organ produces hydrochloric acid in the digestive system?
Stomach
A muscular sheet that forms the floor of the thoracic cavity is called?
Diaphragm
Where is the sinoatrial node located?
Heart
How many ATP molecules are produced from one glucose molecule during respiration?
38
The cartilage in the larynx that helps in sound production is called?
Vocal Cord
The accumulation of which acid causes cramps during strenuous exercise?
Lactic acid
The process of inhaling and exhaling in the human body is called?
During the respiration process, which by-product is produced in the form of carbon atoms?
Pyruvate
The primary organs of respiration are?
Lungs
In a resting state, how many breaths per minute does a normal adult take?
12-18
During expiration, the diaphragm moves in which direction?
Upward
The functional and structural unit of the kidney is called?
Nephron
The nitrogenous waste in the human body is?
Urea
A father’s contribution of the X chromosome results in?
A daughter
The total number of chromosomes in a human cell is?
46
Which sex chromosome combination determines male gender?
XY
A webbed neck is a characteristic of which disorder?
Turner Syndrome
Turner syndrome is not a Mendelian disorder. True or False?
True
Gregor Mendel’s laws of inheritance are based on which concept?
Which disease is characterized by excessive copper accumulation in the body?
Wilson’s Disease
Gregor Mendel is known as the father of?
What is a characteristic of hemophilia?
Inability for blood to clot
In a dihybrid cross of AaBb x Aabb, how many AaBb genotypes are formed?
4
The cross between genetically identical individuals is called?
Isohybrid
Who proposed the Theory of Evolution?
Charles Robert Darwin
How many times does blood pass through the heart during one cardiac cycle?
Once
The digestive enzymes in the stomach are secreted by?
Parietal cells
Which disease is caused by insufficient insulin production in the pancreas?
Diabetes mellitus
Which gland secretes luteinizing hormone?
Pituitary
Where are the adrenal glands located in the human body?
Above the kidneys
The pineal gland secretes which hormone?
Melatonin
Which hormone is produced by the brain to regulate the sleep-wake cycle?
Melatonin
Which glands in our eyes secrete tears?
Lacrimal
Which hormone stimulates the production of milk during breastfeeding?
Oxytocin
Which gland controls the function of other endocrine glands?
Pituitary gland
The second-largest gland in the human body is?
Pancreas
Which thyroid hormone regulates drug use and metabolism?
Levothyroxine
Insulin is secreted by which organ in the human body?
Pancreas
In which organelle is energy produced in the cell?
Mitochondria
Where are the meibomian glands located?
Eye
The outer white part of the eye that protects the internal structures is called?
Sclera
The Eustachian tube is located in which part of the human body?
Ear
The largest tooth in the human body is?
Molar
Lingual lipase is an enzyme produced by which organ to break down fat?
Tongue
Which organ secretes bile juice to aid in digestion?
Liver
The bacteria responsible for causing peptic ulcers is?
Helicobacter pylori
The taste-related organ in the human body is?
Tongue
The flap of cartilage located behind the tongue is called?
Epiglottis
The alimentary canal is?
Esophagus
The pH level that starts to decay teeth is?
5.5
The largest gland in the human body is?
Liver
The period of life when the body undergoes changes leading to sexual maturity is called?
Adolescence
The study of pregnancy, childbirth, and postpartum periods is called?
Obstetrics
Internal fertilization occurs in?
Inside the mother’s body
The total number of chromosomes in human cells is?
46
The process of combining paternal and maternal chromosomes is called?
Fertilization
The sex of a child is determined by?
Father
The genetic material responsible for inheritance is?
DNA
Humans have how many pairs of chromosomes?
23
The role of the ribosome in protein synthesis involves?
Helping in the transfer of mRNA into protein
The correct sequence of protein synthesis is?
DNA, mRNA, Protein Synthesis
A girl inherits two X chromosomes, one from each parent. True or False?
True
In 1839, which scientist gave the term ‘protoplasm’?
Jan Evangelista Purkinje
The largest cell in the human body is?
Ovum
The center of the cell surrounded by a jelly-like substance is known as?
Nucleus
The energy currency of the cell is called?
Adenosine Triphosphate (ATP)
The network responsible for transporting substances inside the cell is called?
Endoplasmic Reticulum
The largest gland in the human body is known as?
Liver
What is the transparent part of the eye called?
Cornea
The amount of light entering the eye is controlled by which structure?
Pupil
Which part of the human body does the cornea belong to?
Eye
The structure that balances the pressure on both sides of the eardrum is called?
Eustachian Tube
The pigment that gives color to human skin, hair, and eyes is called?
Melanin
Aqueous humor is part of which organ in the human body?
Eye
Which part of the human body is responsible for converting electrical signals into light?
Retina
Melanin is a …. that protects the eyes from ultraviolet rays?
Pigment
After how many hours should the eyes be removed for corneal donation after death?
6 hours
What is the defect due to which a person cannot see nearby objects clearly?
Myopia
What is the first stage of mitosis?
Prophase
Which organelle is called the “suicidal bag” of the cell?
Lysosome
Which organelle helps in keeping the cell clean by digesting foreign materials and waste?
Lysosome
In which part of the cell is protein synthesized?
Ribosome
Which organelle is responsible for DNA synthesis in eukaryotic cells?
Nucleus
Which scientists proposed the cell theory?
Schleiden and Schwann
Viruses do not follow the cell theory. True or False?
True
Which channel protein is primarily responsible for water transport in cell membranes facilitated by active transport?
Aquaporins
The powerhouse of the cell is?
Mitochondria
Who discovered penicillin?
Alexander Fleming
The yellow color of urine is due to the presence of ……..?
Urochrome
Which blood group is known as the universal donor?
O Blood Group
How many bones are there in the adult human body?
206 bones
The enzyme steapsin, which converts fat into fatty acids and glycerol, is secreted by which organ?
Pancreas
The flattened membranous sacs found in the Golgi apparatus are known as?
Cisternae
In which year did Anton van Leeuwenhoek discover single-celled organisms?
1674
Where does protein synthesis occur in the cell?
Ribosome
The process of cell division in prokaryotes is known as?
Binary Fission
In which year did Rudolf Virchow publish his famous work “Cellular Pathology” where he made the famous statement “Every cell originates from another existing cell”?
1855
Identify the cell which has an amoeboid shape and lacks a definite form?
White Blood Cells
Identify the red disc-shaped structure found only in eukaryotic cells?
Red Blood Cells
Which sugar is commonly referred to as milk sugar?
Lactose
Which nutrient is related to monosaccharides?
Carbohydrates
Which juice is released from our gall bladder that helps in the digestion of fat?
Bile
In which organelle are enzymes responsible for digesting cellular waste and foreign substances present?
Lysosome
When two nuclei merge during cell fusion to form a single nucleus, what is this process called?
Syncytium
The food that is digested in the stomach passes through the intestines so that blood vessels can absorb the nutrients necessary for the body’s functioning and development. What is this process called?
Absorption
Which scientist first discovered free-living cells in pond water?
Anton van Leeuwenhoek
Which organelle is the powerhouse of the cell and also a crucial center for intracellular metabolic reactions?
Mitochondria
What is the primary function of carbohydrates in the body?
Providing energy
What is the process called in which one organism captures and eats another organism?
Predation
Which spherical structure is responsible for the formation and assembly of ribosomes?
Nucleolus
The maternal mitotic cycle of the cell is known as this stage:
Cytoplasmic adjustment
Foods rich in carbohydrates (like potatoes) and foods rich in fats (like butter) are also known as?
Energy-giving foods
What is the structural and functional unit of living organisms?
Cell
Which organelle is responsible for the production of ATP, the energy currency of the cell?
Mitochondria
The Y-shaped protein structure produced by immune cells to protect our body from harmful bacteria and viruses is known as?
Immunoglobulin
By what other name is the voice box known?
Larynx
Which cellular structure controls the mobility, attachment, and regulation of spindle fibers during cell division and provides an organizing center for the spindle fibers?
Centrosome
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