R4RIN – MCQs, Mock Tests | Biology Biology MCQS[NEET-2021 to 2022]-Anatomy mcq for competitive exams

In man the normal number of chromosomes is

1. 42
2. 46
3. 41
4. 45

✅ Correct Answer: 2

Which of the following parts does not take part in the process of breathing

1. Trachea
2. Diaphragm
3. Bronchi
4. None of the above

✅ Correct Answer: 4

Which one of the following elements is needed in the human body to transfer electric signals by nerve cells?

1. Lithium
2. Caesium
3. Rubidium
4. Sodium

✅ Correct Answer: 4

If bilrubin is high in human body, which of the following organs is effected?

1. Pancreas
2. Liver
3. Kidney
4. Small Intestine

✅ Correct Answer: 2

In the human body, appendix is attached to

1. Large intestine
2. Small intestine
3. Stomach
4. Gall bladder

✅ Correct Answer: 1

In the human body, which one of the following hormones regulates blood calcium and phosphate?

1. Glucagon
2. Growth hormone
3. Parathyroid hormone
4. Thyroxine

✅ Correct Answer: 3

In human beings, normally, the sperm fertilises the ovum in which of the following parts?

1. Cervix
2. Fallopian tube
3. Lower part of uterus
4. Upper part of uterus

✅ Correct Answer: 2

Which one of the following parts of human brain is the regulating centre for swallowing and vomiting?

1. Cerebellum
2. Cerebrum
3. Medulla oblongata
4. Pons

✅ Correct Answer: 3

Which one of the following types of tissues have contractile proteins?

1. Nervous tissue
2. Muscle tissue
3. Bone tissue
4. Blood tissue

✅ Correct Answer: 2

Which part of the brain controls respiration

1. Cerebral cortex
2. Medulla oblongata
3. Cerebellum
4. Cerebrum

✅ Correct Answer: 2

The function of Trypsin is to

1. break down fats
2. synthesize proteins
3. break down proteins
4. break down carbohydrates

✅ Correct Answer: 3

Muscle fatigue is caused by the accumulation of

1. Pyruvic acid
2. Lactic acid
3. Oxalacetic acid
4. Uric acid

✅ Correct Answer: 2

Which are not included in the milk-teeth in a child of 3-4 years ?

1. Incisors
2. Canines
3. Molars
4. Premolars

✅ Correct Answer: 3

What does enamel cover?

1. Crown of the tooth
2. Dentin on all sides
3. Cementum
4. Cementum and partly dentin

✅ Correct Answer: 1

The acid which is secreted by the glands in the stomach wall is

1. phosphoric acid
2. nitric acid
3. hydrochloric acid
4. sulphuric acid

✅ Correct Answer: 3

Which one of the following organs excretes water, fat and various catabolic wastes?

1. Skin
2. Kidney
3. Spleen
4. Salivary glands

✅ Correct Answer: 2

A surge of which hormone stimulates ovulation in human females?

1. Luteinizing hormone
2. Estrogen
3. Follicle stimulating hormone
4. Progesterone

✅ Correct Answer: 1

Universal receivers can receive blood from

1. Group AB only
2. Group O only
3. Groups O, A, B, AB
4. Groups A, AB

✅ Correct Answer: 3

The enzyme that is present in the saliva of man is

1. Pepsin
2. Amylase
3. Trypsin
4. Renin

✅ Correct Answer: 2

Which one of the following is the correct sequence in the order of decreasing length of the three structural parts given below of small intestine in the human body ?

1. Ileum - Jejunum - Duodenum
2. Jejunum - Ileum - Duodenum
3. Ileum - Duodenum - Jejunum
4. Jejunum - Duodenum - Ileum

✅ Correct Answer: 1

Which one of the following is not a digestive enzyme in the human system?

1. Trypsin
2. Gastrin
3. Ptyalin
4. Pepsin

✅ Correct Answer: 2

Dehydration in human body is caused due to the loss of -

1. Hormones
2. Salts
3. Vitamins
4. Water

✅ Correct Answer: 4

Production of which one of the following is a function of the liver?

1. Lipase
2. Urea
3. Mucus
4. Hydrochloric acid

✅ Correct Answer: 1

If by an unknown accident the acid secreting cells of the stomach wall of an individual are damaged, digestion of which one of the following biomolecule will be affected to a greater extent?

1. Protein only
2. Lipid
3. Carbohydrate
4. Protein and carbohydrate

✅ Correct Answer: 1

When we eat something we like, our mouth waters. This is actually not water but fluid secreted from

1. nasal glands
2. oval epithelium
3. salivary glands
4. tongue

✅ Correct Answer: 3

Which of the following is known as the voice box

1. trachea
2. pharynx
3. epiglottis
4. larynx

✅ Correct Answer: 4

Which one among the following will be absorbed fastest through the wall of digestive system

1. Black coffee as a hot beverage
2. DDT taken as a poison
3. Raw alcohol taken as a drink
4. Ice cream as a desert

✅ Correct Answer: 3

It has been observed the astronauts lose substantial quantity of calcium through urine during space flight. This is due to

1. hypergravity
2. microgravity
3. intake of dehydrated food tablet
4. low temperature in cosmos

✅ Correct Answer: 4

Cutting and peeling of onion bring tears to the eyes because of the presence of

1. sulfur in the cell
2. carbon in the cell
3. fat in the cell
4. aminoacid in the cell

✅ Correct Answer: 1

The contractile proteins in a muscle are

1. Actin and Myosin
2. Actin and Tropomyosin
3. Myosin and Troponin
4. Troponin and Tropomyosin

✅ Correct Answer: 1

Which of the following is not an enzyme

1. Amylase
2. Pepsin
3. Somatotropin
4. Trypsin

✅ Correct Answer: 3

Which is the heaviest organ of our body?

1. Liver
2. Skin
3. Pancreas
4. Heart

✅ Correct Answer: 2

Which one of the following is not a part of small intestine

1. Caecum
2. Duodenum
3. Jejunum
4. Ileum

✅ Correct Answer: 1

Sweat glands belong to

1. Integumentary system
2. Digestive system
3. Muscular system
4. Excretory system

✅ Correct Answer: 1

Our human body has

1. 206 bones
2. 210 bones
3. 212 bones
4. 203 bones

✅ Correct Answer: 1

All enzymes are actually

1. Carbohydrates
2. Proteins
3. Fatty acids
4. Sterols

✅ Correct Answer: 2

Inspiration and Expiration are done by

1. Digestive system
2. Skeletal system
3. Muscular system
4. Respiratory system

✅ Correct Answer: 4

Which organ works as an excretory and a sense organ?

1. Lungs
2. Kidney
3. Skin
4. Liver

✅ Correct Answer: 3

Cartilage present in body is

1. a muscular tissue
2. an epithelial tissue
3. a connective tissue
4. a germinal tissue

✅ Correct Answer: 3

Circulatory system contains the

1. Lungs
2. Brain
3. Heart
4. Stomach

✅ Correct Answer: 3

Which one among the following glands is present in pairs in human body

1. Adrenal
2. Liver
3. Pancreas
4. Pineal

✅ Correct Answer: 1

Lobsters and crabs have .

1. Blue blood
2. White blood
3. Colourless blood
4. Red blood

✅ Correct Answer: 1

Blood transports

1. Oxygen
2. Hormones
3. Nutrient
4. All of the above

✅ Correct Answer: 4

During the process of respiration in human beings, the exchange of gases takes place in

1. bronchi
2. alveoli
3. bronchiole
4. pleura

✅ Correct Answer: 2

Which one of the glands in human body produces the growth hormone (Somatotropin)

1. Adrenal
2. Pancrease
3. Pituitary
4. Thyroid

✅ Correct Answer: 3

Which one of the following is a pigment?

1. Albumin
2. Elastin
3. Keratin
4. Melanin

✅ Correct Answer: 4

In human beings, the opening of the stomach into the small intestine is called

1. caecum
2. ileum
3. oesophagus
4. pylorus

✅ Correct Answer: 4

In which part of the human body do we find the islet of langerhans

1. brain
2. pancreas
3. kidney
4. liver

✅ Correct Answer: 2

Cell or tissue death within a living body is called as

1. Neutrophilia
2. Nephrosis
3. Necrosis
4. Neoplasia

✅ Correct Answer: 3

Which part of the human eye is transplanted from a dead donor to a living person

1. cornea
2. retina
3. iris
4. sclera

✅ Correct Answer: 1

In the human body, nails are made up of

1. melanin
2. keratin
3. enamel
4. cartilage

✅ Correct Answer: 2

Sweating during exercise indicates operation of which one of the following processes in the human body

1. Enthalpy
2. Homeostasis
3. Phagocytosis
4. Osmoregulation

✅ Correct Answer: 2

Pituitary gland is situated in

1. The base of the heart
2. The base of the brain
3. The neck
4. The abdomen

✅ Correct Answer: 2

Smooth muscles are found in the

1. Stomach
2. Blood vessels
3. Intestine
4. All of the above

✅ Correct Answer: 4

In which part of the human body is the smallest bone found

1. wrist
2. palm
3. nose
4. ear

✅ Correct Answer: 4

Skeletal system produces

1. Hormones
2. Sperms
3. Blood cells
4. None of the above

✅ Correct Answer: 3

Which among the following is the largest endocrine gland of human body

1. Thyroid
2. Parathyroid
3. Adrenal
4. Pituitary

✅ Correct Answer: 1

Which one of the following enzymes is found in human saliva

1. Trypsin
2. Pepsin
3. Ptyalin
4. Rennin

✅ Correct Answer: 3

The blood is filtered and the waste is separated by

1. Ductless glands
2. Kidney
3. Heart
4. Pancreas

✅ Correct Answer: 2

Which system regulates water level and body temperature?

1. Nervous
2. Skeletal
3. Endocrine
4. Circulatory

✅ Correct Answer: 4

The skeletal system is made up of bone

1. 206
2. 306
3. 606
4. 200

✅ Correct Answer: 1

The ovaries produce female gametes called

1. Sperms
2. Hormones
3. Egg
4. None of the above

✅ Correct Answer: 3

The Central Nervous System is made up of

1. Spinal cord
2. Brain
3. Liver
4. Both A and B

✅ Correct Answer: 4

Hormones regulate

1. Body functions
2. Water level
3. Body temperature
4. Blood flow

✅ Correct Answer: 1

How many herbs are used in the preparation of Siddha medicine?

1. 1100
2. 1200
3. 800
4. 1300

✅ Correct Answer: 2

Cardiac muscle is present in the

1. Kidney
2. Lungs
3. Heart
4. Liver

✅ Correct Answer: 3

Unit of Nervous System is .

1. Neurons
2. Nerves
3. Brain
4. Spinal cord

✅ Correct Answer: 1

Aerobic exercises supply

1. Carbon dioxide
2. Oxgyen
3. Energy
4. Fats

✅ Correct Answer: 2

The chief organ in the Circulatory System

1. Lungs
2. Heart
3. Vein
4. Kidney

✅ Correct Answer: 2

The skin of man weighs about

1. 7 kg
2. 10 kg
3. 9 kg
4. 12 kg

✅ Correct Answer: 1

Every organ in our body is made up of

1. flesh
2. Musscles
3. Bones
4. Cells

✅ Correct Answer: 4

Respiratory organs are

1. Heart
2. Kidney
3. Liver
4. Lungs

✅ Correct Answer: 4

Kidneys excrete

1. Urine
2. Acids
3. Bases
4. Water

✅ Correct Answer: 1

Blood carries waste materials to

1. Alimentary Canal
2. Lungs
3. Kidneys
4. Heart

✅ Correct Answer: 3

The colour of the kidney is

1. Red
2. Yellow
3. Dark yellow
4. Dark red

✅ Correct Answer: 4

is a Dravidian system of medicine

1. Siddha
2. Unani
3. Ayurveda
4. Homeopathy

✅ Correct Answer: 1

A state of complete physical, mental and social well being is called

1. Disease
2. Health
3. Diet
4. Unhealthy

✅ Correct Answer: 2

The brain is located in the .

1. Abdomen
2. Spinal cord
3. Skull
4. Stomach

✅ Correct Answer: 3

Insulin is secreted by

1. Kidneys
2. Endocrine
3. Pancreas
4. Heart

✅ Correct Answer: 3

Pasteurization method was discovered by

1. Hippocrates
2. Louis Pasteur
3. Agastiyar
4. None

✅ Correct Answer: 2

Bone marrow is composed of

1. adipose tissue, areolar tissue and blood
2. adipose and areolar tissue
3. adipose tissue and fibroblasts
4. adipose tissue

✅ Correct Answer: 1

Bone marrow takes part in

1. assisting liver
2. assisting kidneys
3. controlling blood pressure
4. as haemopoietic tissue

✅ Correct Answer: 4

Haversian canals occur in

1. clavicle
2. Pubis
3. Humerus
4. scapula

✅ Correct Answer: 3

Hyaline cartilage does not possess

1. Cells
2. fibres
3. lacunae
4. blood capillaries

✅ Correct Answer: 2

Mammalian pinna is supported by

1. hyaline cartilage
2. elastic cartilage
3. calcified cartilage
4. white fibrous connective tissue

✅ Correct Answer: 2

Membrane surrounding a bone is called

1. periosteum
2. endo steum
3. pericardium
4. perichondrium

✅ Correct Answer: 1

Major inorganic components of vertebrate bone is

1. calcium carbonate
2. calcium phosphate
3. potassium hydroxide
4. None of the above

✅ Correct Answer: 2

Haversian canals found in bones contain

1. artery and vein
2. osteoblasts in areolar tissue
3. nerve and lymph vessel
4. All of these

✅ Correct Answer: 4

The functional unit of contractile system in striated muscle is

1. myofibril
2. Cross bridges
3. Z band
4. sarcomere

✅ Correct Answer: 4

Which of the following is the contractile protein of a muscle?

1. Tubulin
2. Myosin
3. Tubulin
4. All of these

✅ Correct Answer: 2

The contractile protein of skeletal muscle involving ATPase activity is

1. actin
2. Myosin
3. troponin
4. tropomyosin

✅ Correct Answer: 2

Muscle fatigue sets in due to non availability of

1. Calcium
2. ATP
3. actin binding site
4. Mg cofactor

✅ Correct Answer: 2

Light band has which of the following filament protein?

1. Myosin
2. Actin
3. Myosin and actin
4. None of these

✅ Correct Answer: 2

Upon stimulation of skeletal muscles calcium is immediately made available for binding to troponin from

1. sarcoplasmic reticulum
2. Blood
3. Lymph
4. Bone

✅ Correct Answer: 1

What is sarcomere

1. Part between two H line
2. Part between two A line
3. Part between two Z line
4. Part between two I band

✅ Correct Answer: 3

Acute vision is present in

1. Bat
2. Frog
3. Shark
4. vulture

✅ Correct Answer: 4

Which of the following cranial nerves can regulate heart beat?

1. VII
2. VIII
3. IX
4. X

✅ Correct Answer: 4

The junction between the axon of one neuron and the dendrite of the next is called

1. a joint
2. a synapse
3. constant bridge
4. junction point

✅ Correct Answer: 2