datavorous/entrance-exam-dataset huggingface dataset:
What is the function of the plasma membrane?

Options:
A Transport of molecules
B Protection of the cell
C Production of energy
D All of the above

The correct answer is:
Transport of molecules

Solution:
The plasma membrane is responsible for the transport of molecules across it, both passively and actively.

Topic: Biology, Cell - The Unit of Life, NEET
What is the function of the pollen sacs in an anther?

Options:
A To support the filament
B To separate the theca
C To house the gynoecium
D To contain pollen grains

The correct answer is:
To contain pollen grains

Solution:
The pollen sacs in an anther are packed with pollen grains and extend longitudinally throughout the length of the anther.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What is the function of the promoter in a transcription unit?

Options:
A It provides a binding site for RNA polymerase
B It defines the coding and template strands
C It defines the end of the process of transcription
D None of the above

The correct answer is:
It provides a binding site for RNA polymerase

Solution:
The promoter is a DNA sequence that provides a binding site for RNA polymerase.

Topic: Biology, Molecular Basis of Inheritance, NEET
What is the function of the protein crystals produced by Bacillus thuringiensis?

Options:
A They contain a toxic insecticidal protein
B They bind to the surface of midgut epithelial cells
C They solubilize the crystals
D They cause cell swelling and lysis

The correct answer is:
They contain a toxic insecticidal protein

Solution:
B. thuringiensis forms protein crystals during a particular phase of their growth. These crystals contain a toxic insecticidal protein.

Topic: Biology, Biotechnology and Its Applications, NEET
What is the function of the renal tubule in the nephron?

Options:
A To filter out waste products from the blood
B To transport waste products from the bladder to the urethra
C To provide oxygen to the glomerulus
D To regulate blood pressure in the body

The correct answer is:
To filter out waste products from the blood

Solution:
The renal tubule, along with the glomerulus, forms the functional unit of the nephron, which filters waste products from the blood.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the function of the rich protein layer found in Euglena instead of a cell wall?

Options:
A It contributes to photosynthesis.
B It helps in locomotion.
C It contributes to flexibility.
D It allows the organism to be heterotrophic in the absence of sunlight.

The correct answer is:
It contributes to flexibility.

Solution:
Euglenoids are freshwater organisms. Instead of a cell wall, they have a protein-rich layer called pellicle which makes their body flexible. They have two flagella, a short and a long one. Though they are photosynthetic in the presence of sunlight, when deprived of sunlight, they behave like heterotrophs by predating on other smaller organisms.

Topic: Biology, Biological Classification, NEET
What is the function of the root cap in the developing embryo?

Options:
A To protect the radicle
B To absorb water and nutrients
C To provide structure to the embryonic axis
D To regulate the growth of the radicle

The correct answer is:
To protect the radicle

Solution:
The root tip of the embryonal axis is covered with a root cap, which protects the radicle.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What is the function of the sarcoplasmic reticulum in muscle fibers?

Options:
A To store calcium ions
B To hold muscle bundles together
C To line muscle fibers
D To form parallelly arranged filaments in the sarcoplasm

The correct answer is:
To store calcium ions

Solution:
The endoplasmic reticulum, i.e., sarcoplasmic reticulum of the muscle fibers is the storehouse of calcium ions.

Topic: Biology, Locomotion and Movement, NEET
What is the function of the secretions of bulbourethral glands?

Options:
A To transport sperms
B To store sperms
C To lubricate the penis
D To provide nutrition to germ cells

The correct answer is:
To lubricate the penis

Solution:
The secretions of the bulbourethral glands help in the lubrication of the penis.

Topic: Biology, Human Reproduction, NEET
What is the function of the seed coat in angiosperms?

Options:
A To provide protection to the young embryo
B To aid in photosynthesis
C To generate new genetic combinations
D To aid in dispersal

The correct answer is:
To provide protection to the young embryo

Solution:
The seed coat in angiosperms provides protection to the young embryo.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What is the function of the semilunar valves during ventricular diastole?

Options:
A To allow the backflow of blood into the ventricles
B To prevent the backflow of blood into the ventricles
C To increase the ventricular pressure
D To open the tricuspid and bicuspid valves

The correct answer is:
To prevent the backflow of blood into the ventricles

Solution:
The closure of semilunar valves prevents the backflow of blood into the ventricles.

Topic: Biology, Body Fluids and Circulation, NEET
What is the function of the seminal plasma?

Options:
A To provide nutrition to germ cells
B To transport sperms
C To store sperms
D To facilitate insemination

The correct answer is:
To facilitate insemination

Solution:
The secretions of the male accessory glands constitute the seminal plasma which helps in the facilitation of insemination.

Topic: Biology, Human Reproduction, NEET
What is the function of the Sertoli cells in the testis?

Options:
A To undergo meiotic divisions
B To provide nutrition to the germ cells
C To synthesise and secrete testicular hormones
D To line the inside of the seminiferous tubules

The correct answer is:
To provide nutrition to the germ cells

Solution:
The Sertoli cells provide nutrition to the germ cells and do not undergo meiotic divisions.

Topic: Biology, Human Reproduction, NEET
What is the function of the Sino-atrial node (SAN) in the heart?

Options:
A To control blood pressure
B To control heart rate
C To control the stroke volume
D To control the blood flow

The correct answer is:
To control heart rate

Solution:
The Sino-atrial node (SAN) generates the maximum number of action potentials per minute and sets the pace of the activities of the heart, hence it is called the pacemaker.

Topic: Biology, Body Fluids and Circulation, NEET
What is the function of the sinus venosus in the frog's heart?

Options:
A It helps pump blood to the ventricle
B It receives blood through the major veins
C It helps regulate blood flow to the kidneys
D It connects the atria and ventricle

The correct answer is:
It receives blood through the major veins

Solution:
The sinus venosus is a triangular structure that joins the right atrium, and it receives blood through the major veins called vena cava.

Topic: Biology, Structural Organisation in Animals, NEET
What is the function of the spleen in the human body regarding erythrocytes?

Options:
A Acts as a filter of erythrocytes
B Acts as a storage of erythrocytes
C Acts as a micro-organisms
D None of the above

The correct answer is:
Acts as a storage of erythrocytes

Solution:
Spleen acts as a storage of erythrocytes.

Topic: Biology, Human Health and Diseases, NEET
What is the function of the sporangia in pteridophytes?

Options:
A To produce gametes
B To produce spores
C To photosynthesize
D To store nutrients

The correct answer is:
To produce spores

Solution:
The sporangia in pteridophytes produce spores by meiosis in spore mother cells.

Topic: Biology, Plant Kingdom, NEET
What is the function of the sternum in the human body?

Options:
A To protect the spinal cord
B To support the head
C To serve as the point of attachment for the musculature of the back
D To be a flat bone on the ventral midline of thorax

The correct answer is:
To be a flat bone on the ventral midline of thorax

Solution:
Sternum is a flat bone on the ventral midline of thorax.

Topic: Biology, Locomotion and Movement, NEET
What is the function of the stigma in a flower?

Options:
A To serve as a platform for landing of pollen grains
B To serve as a base for the ovary
C To serve as a platform for landing of seeds
D None of the above

The correct answer is:
To serve as a platform for landing of pollen grains

Solution:
The stigma serves as a landing platform for pollen grains.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What is the function of the stigma in a flower?

Options:
A Produce pollen grains
B Enclose ovules
C Receive pollen grains
D Produce an egg cell

The correct answer is:
Receive pollen grains

Solution:
The stigma of a pistil is the location where pollen grains are carried by wind or various other agencies and deposited, which is known as pollination.

Topic: Biology, Plant Kingdom, NEET
What is the function of the stigma in a pistil?

Options:
A To produce ovules
B To form the embryo sac
C To receive pollen grains
D To form fruit

The correct answer is:
To receive pollen grains

Solution:
The stigma in a pistil is the part that receives pollen grains during pollination.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What is the function of the stigma in the female reproductive part of a flower?

Options:
A To connect the ovary to the style
B To receive pollen grains
C To bear ovules
D To mature into a fruit

The correct answer is:
To receive pollen grains

Solution:
The stigma is located at the tip of the style and is the receptive surface for pollen grains to land and fertilize the ovules.

Topic: Biology, Morphology of Flowering Plants, NEET
What is the function of the stroma in the chloroplast?

Options:
A Synthesis of ATP and NADPH
B Trapping of light energy
C Synthesis of sugar
D Formation of starch

The correct answer is:
Synthesis of sugar

Solution:
In the stroma of the chloroplast, enzymatic reactions synthesize sugar, which forms starch.

Topic: Biology, Photosynthesis in Higher Plants, NEET
What is the function of the style in a flower?

Options:
A To serve as a platform for landing of pollen grains
B To serve as an elongated slender part beneath the stigma
C To serve as a base for the ovary
D None of the above

The correct answer is:
To serve as an elongated slender part beneath the stigma

Solution:
The style is the elongated slender part beneath the stigma.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What is the function of the sub-mucosa layer?

Options:
A To protect the alimentary canal
B To control the movement of food
C To aid in absorption of nutrients
D To contain nerves, blood and lymph vessels

The correct answer is:
To contain nerves, blood and lymph vessels

Solution:
The submucosal layer is formed of loose connective tissues containing nerves, blood and lymph vessels. This layer provides the necessary blood and nerve supply to the mucosa layer.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the synaptic knob?

Options:
A To transmit impulses towards the cell body
B To transmit nerve impulses away from the cell body
C To form a myelin sheath
D To possess neurotransmitters

The correct answer is:
To possess neurotransmitters

Solution:
The synaptic knob is a bulb-like structure at the distal end of the axon of a neuron. It possesses synaptic vesicles containing neurotransmitters.

Topic: Biology, Neural Control and Coordination, NEET
What is the function of the synergids and antipodals in pollination?

Options:
A To provide nourishment to the developing embryo
B To transport the male gametes to the egg cell
C To guide the pollen tubes to the ovules
D To degenerate after fertilization

The correct answer is:
To degenerate after fertilization

Solution:
After fertilization, the synergids and antipodals in the ovules degenerate and do not play a role in the further development of the seed or fruit.

Topic: Biology, Plant Kingdom, NEET
What is the function of the tapetal cells?

Options:
A To form the microspores
B To help in dehiscence of anther to release the pollen
C To nourish the developing pollen grains
D To form the sporogenous tissue

The correct answer is:
To nourish the developing pollen grains

Solution:
Cells of the tapetum nourish the developing pollen grains.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What is the function of the terminator in a transcription unit?

Options:
A It provides a binding site for RNA polymerase
B It defines the coding and template strands
C It defines the end of the process of transcription
D None of the above

The correct answer is:
It defines the end of the process of transcription

Solution:
The terminator usually defines the end of the process of transcription.

Topic: Biology, Molecular Basis of Inheritance, NEET
What is the function of the thalamus in the brain?

Options:
A It is involved in the regulation of emotional reactions
B It acts as a major coordinating center for sensory and motor signaling
C It contains centers that control body temperature and urge for eating and drinking
D It secretes hormones called hypothalamic hormones

The correct answer is:
It acts as a major coordinating center for sensory and motor signaling

Solution:
The thalamus acts as a major coordinating center for sensory and motor signaling.

Topic: Biology, Neural Control and Coordination, NEET
What is the function of the thalamus in the brain?

Options:
A Controls body temperature, urge for eating and drinking
B Involved in the regulation of sexual behavior
C A major coordinating center for sensory and motor signaling
D Expression of emotional reactions

The correct answer is:
A major coordinating center for sensory and motor signaling

Solution:
The thalamus is a major coordinating center for sensory and motor signaling.

Topic: Biology, Neural Control and Coordination, NEET
What is the function of the three codons UAA, UAG, and UGA in the genetic code?

Options:
A Code for amino acids
B Act as initiator codons
C Act as terminator codons
D Increase the degeneracy of the code

The correct answer is:
Act as terminator codons

Solution:
UAA, UAG, and UGA are stop codons or terminator codons which signal the end of the coding sequence.

Topic: Biology, Molecular Basis of Inheritance, NEET
What is the function of the thymus gland?

Options:
A Secretion of insulin
B Development of immune system
C Regulation of blood pressure
D Secretion of thyroid hormones

The correct answer is:
Development of immune system

Solution:
The thymus gland plays a major role in the development of the immune system by secreting the peptide hormones called thymosins, which play a major role in the differentiation of T-lymphocytes and production of antibodies.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the function of the thymus in the human body?

Options:
A Filter of the blood
B Micro-environment for T-lymphocytes
C Trapping of antigens
D Storage of erythrocytes

The correct answer is:
Micro-environment for T-lymphocytes

Solution:
Both bone marrow and thymus provide micro-environments for the development and maturation of T-lymphocytes.

Topic: Biology, Human Health and Diseases, NEET
What is the function of the tongue?

Options:
A To produce enzymes
B To break down food
C To aid in swallowing and speech
D To produce hormones

The correct answer is:
To aid in swallowing and speech

Solution:
The tongue is a freely movable muscular organ attached to the floor of the oral cavity by the frenulum. It helps in swallowing and speech, by manipulating food and shaping the sounds of speech.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the transacetylase gene in the lac operon?

Options:
A It codes for beta-galactosidase
B It codes for permease
C It codes for transacetylase
D It is not involved in lactose metabolism

The correct answer is:
It codes for transacetylase

Solution:
The a gene codes for transacetylase, which has a minor role in lactose metabolism.

Topic: Biology, Molecular Basis of Inheritance, NEET
What is the function of the tympanum on a frog's head?

Options:
A To help the frog see better
B To help the frog hear
C To help the frog breathe
D To help the frog swim

The correct answer is:
To help the frog hear

Solution:
The tympanum is a membranous ear that receives sound signals on either side of the eyes.

Topic: Biology, Structural Organisation in Animals, NEET
What is the function of the umbilical cord?

Options:
A Transport of substances to and from the placenta
B Supply of oxygen and nutrients to the maternal body
C Transport of substances to and from the uterus
D Transport of substances to and from the embryo

The correct answer is:
Transport of substances to and from the embryo

Solution:
The umbilical cord is connected to the embryo and helps in the transport of substances to and from the embryo.

Topic: Biology, Human Reproduction, NEET
What is the function of the urethral sphincter in the release of urine?

Options:
A It contracts to prevent the release of urine
B It contracts to increase the release of urine
C It relaxes to prevent the release of urine
D It relaxes to increase the release of urine

The correct answer is:
It relaxes to increase the release of urine

Solution:
The urethral sphincter relaxes during the release of urine to allow the urine to flow out of the bladder.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the function of the vermiform appendix?

Options:
A To absorb nutrients
B To produce hormones
C To act as a vestigial organ
D To aid in the immune system

The correct answer is:
To act as a vestigial organ

Solution:
The vermiform appendix is a vestigial organ, it does not have a known function in humans but it is thought to have a role in the immune system.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the villi in the small intestine?

Options:
A To protect the alimentary canal
B To control the movement of food
C To aid in absorption of nutrients
D To produce hormones

The correct answer is:
To aid in absorption of nutrients

Solution:
The small intestine's mucosa layer forms small finger-like foldings called villi, which increase the surface area for absorption of nutrients, by providing more space for enzymes to work on.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the waxy material suberin found in the endodermal cells?

Options:
A To provide structural support
B To protect against water loss
C To initiate lateral roots
D To act as a barrier for the uptake of minerals

The correct answer is:
To act as a barrier for the uptake of minerals

Solution:
The tangential and radial walls of the endodermal cells have a deposition of water-impermeable, waxy material suberin in the form of casparian strips.

Topic: Biology, Anatomy of Flowering Plants, NEET
What is the function of tropomyosin in the actin filament?

Options:
A To activate the binding sites for myosin on actin filaments
B To mask the active binding sites for myosin on actin filaments
C To run close to the "F" actins throughout its length
D To regulate the interaction between "F" actins and troponin

The correct answer is:
To run close to the "F" actins throughout its length

Solution:
Two filaments of tropomyosin run close to the "F" actins throughout its length.

Topic: Biology, Locomotion and Movement, NEET
What is the function of troponin in muscle contraction?

Options:
A It acts as a neurotransmitter
B It regulates the release of calcium ions
C It forms cross bridges with myosin
D It masks the active sites for myosin

The correct answer is:
It masks the active sites for myosin

Solution:
In the resting state, a subunit of troponin masks the active binding sites for myosin on actin filaments.

Topic: Biology, Locomotion and Movement, NEET
What is the function of trypsinogen in the digestion of proteins?

Options:
A It converts proteins into proteoses and peptones
B It activates other enzymes in the pancreatic juice
C It converts proteins into amino acids
D It emulsifies fats

The correct answer is:
It activates other enzymes in the pancreatic juice

Solution:
Trypsinogen is an inactive enzyme present in the pancreatic juice, which gets activated by the enzyme enterokinase, secreted by the intestinal mucosa, into active trypsin. Trypsin then activates other enzymes in the pancreatic juice, such as chymotrypsinogen, procarboxypeptidases, and amylases.

Topic: Biology, Digestion and Absorption, NEET
What is the function of trypsinogen in the pancreas?

Options:
A To activate other enzymes in the pancreatic juice
B To digest carbohydrates
C To digest nucleic acids
D To digest fats

The correct answer is:
To activate other enzymes in the pancreatic juice

Solution:
Trypsinogen is an inactive enzyme present in the pancreatic juice that is activated by an enzyme called enterokinase, which is secreted by the intestinal mucosa. Once activated, trypsin activates other enzymes in the pancreatic juice, such as chymotrypsinogen and procarboxypeptidases, to aid in the digestion of proteins.

Topic: Biology, Digestion and Absorption, NEET
What is the function of TSH in the body?

Options:
A Stimulation of thyroid hormones from the thyroid gland
B Stimulation of steroid hormones from the adrenal cortex
C Stimulation of androgens from the testis
D Induction of ovulation of fully mature follicles

The correct answer is:
Stimulation of thyroid hormones from the thyroid gland

Solution:
TSH stimulates the synthesis and secretion of thyroid hormones from the thyroid gland.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the function of untranslated regions (UTRs) in mRNA?

Options:
A To initiate transcription
B To regulate splicing
C To transport mRNA from nucleus to cytoplasm
D To enhance efficient translation

The correct answer is:
To enhance efficient translation

Solution:
UTRs are required for efficient translation process.

Topic: Biology, Molecular Basis of Inheritance, NEET
What is the function of untranslated regions (UTRs) in mRNA?

Options:
A Code for a polypeptide
B Required for efficient translation process
C Bind to the ribosome at the start codon
D Catalyse the formation of peptide bond

The correct answer is:
Required for efficient translation process

Solution:
The untranslated regions (UTRs) in mRNA are not translated but are required for efficient translation process. They are present at both 5' -end (before start codon) and at 3' -end (after stop codon).

Topic: Biology, Molecular Basis of Inheritance, NEET
What is the function of Ureters in frogs?

Options:
A for breathing
B for excretion
C for circulation
D it acts as urinogenital duct which opens into the cloaca

The correct answer is:
it acts as urinogenital duct which opens into the cloaca

Solution:
In frogs, the Ureters acts as urinogenital duct which opens into the cloaca.

Topic: Biology, Structural Organisation in Animals, NEET
What is the function of vacuole in plant cells?

Options:
A To store water and other materials
B To transport ions
C To regulate osmotic pressure
D To engulf food particles

The correct answer is:
To store water and other materials

Solution:
The vacuole in plant cells contains water, sap, excretory product and other materials not useful for the cell and can occupy up to 90% of the volume of the cell.

Topic: Biology, Cell - The Unit of Life, NEET
What is the function of water in the reproduction of pteridophytes?

Options:
A To transfer the egg to the antheridia
B To transfer the antherozoids to the archegonium
C To fertilize the egg
D To produce the sporophyte

The correct answer is:
To transfer the antherozoids to the archegonium

Solution:
Water is required for the transfer of the male gametes, or antherozoids, from the antheridia to the mouth of the archegonium.

Topic: Biology, Plant Kingdom, NEET
What is the function of yeast in making bread?

Options:
A To kill harmful pests
B To recycle water in nature
C To ferment the dough
D To produce biogas

The correct answer is:
To ferment the dough

Solution:
Yeast called Saccharomyces cerevisiae is used to ferment the dough used to make bread.

Topic: Biology, Microbes in Human Welfare, NEET