datavorous/entrance-exam-dataset huggingface dataset:
Which of the following statement is correct for the mechanism for oxytocin hormone?

Options:
A It crosses the target cell membrane and enter inside the target cell.
B It binds to specific intracellular receptor to form H-R complex.
C It generates secondary messengers inside cell to give physiological response.
D All of the above

The correct answer is:
It generates secondary messengers inside cell to give physiological response.

Solution:
Oxytocin hormone is chemically proteinaceous or polypeptide and is a water soluble hormone. This hormone never crosses and enter the target cell.
This hormone binds to its specific membrane bound receptor to form H-R complex outside the target cell and generate secondary messengers to bring physiological response.

Topic: Biology, Chemical Coordination and Integration, NEET
Which of the following statement is correct regarding liverworts?

Options:
A The thallus is dorsiventral and closely appressed to the substrate.
B They are monoecious as well as dioecious.
C Asexual reproduction by fragmentation or gemma cups.
D More than one option is correct

The correct answer is:
More than one option is correct

Solution:
The plant body of a liverwort is thalloid. The thallus is dorsiventral and closely appressed to the substrate. The leafy members have tiny leaf-like appendages in two rows on the stem-like structures. Asexual reproduction in liverworts takes place by fragmentation of thalli, or by the formation of specialized structures called gemmae (sing. gemma). During sexual reproduction, male and female sex organs are produced either on the same or on different thalli.

Topic: Biology, Plant Kingdom, NEET
Which of the following statement is false regarding proteins?

Options:
A A protein is heteropolymer and not a homopolymer
B Collagen is the most abundant protein in the animal world
C RUBISCO is the most abundant protein in the whole biosphere
D The first amino acid in the polypeptide chain is called as C-terminal amino acid and the last amino acid is called as N-terminal amino acid.

The correct answer is:
The first amino acid in the polypeptide chain is called as C-terminal amino acid and the last amino acid is called as N-terminal amino acid.

Solution:
The N-terminus (also known as the amino-terminus, NH2-terminus, N-terminal end or amine-terminus) refers to the start of a protein or polypeptide terminated by an amino acid with a free amine group (-NH2). The convention for writing peptide sequences is to put the N-terminus on the left and write the sequence from N- to C-terminus.

Topic: Chemistry, Biomolecules, NEET
Which of the following statement is incorrect?

Options:
A Standard Gibbs free energy change is always zero at equilibrium
B Addition of solid does not affect equilibrium
C On addition of catalyst the value of equilibrium constant is not affected
D Equivalent constant for a reaction with negative ΔH value decreases as the temperature increases

The correct answer is:
Standard Gibbs free energy change is always zero at equilibrium

Solution:
ΔG o is not always zero at equilibrium however ÎG is always zero.

Topic: Chemistry, Chemical Equilibrium, NEET
Which of the following statement is incorrect?

Options:
A

Conservation laws have deep connection with symmetries of nature

B Weak nuclear force is weakest among all fundamental forces of nature
C A conservation law is a hypothesis based on observations and experiments
D In a nuclear process mass gets converted to energy or vice versa

The correct answer is:
Weak nuclear force is weakest among all fundamental forces of nature

Solution:
The weak force is the force existing between the elementary particles which are responsible for certain processes to take place at a low probability. Physicists describe this interaction through the exchange of force-carrying particles called bosons. Specific kinds of bosons are responsible for the weak force, the electromagnetic force, and the strong force. Gravitational force is one of the four fundamental forces. It is considered to be the weakest of the four. The gravitational force is attractive in nature. Conservation laws have deep connection with symmetries of nature. A conservation law is a hypothesis based on observations and experiments. In a nuclear process mass gets converted to energy or vice versa.

Topic: Physics, Motion In One Dimension, TS EAMCET, TS EAMCET 2021 (04 Aug Shift 1)
Which of the following statement is incorrect about oogenesis?

Options:
A The Graafian follicle ruptures to release the secondary oocyte from the ovary by the process called ovulation.
B Oogenesis is initiated during the embryonic development stage when a couple of million gamete mother cells (oogonia) are formed within each fetal ovary.
C The primary oocyte undergoes a second unequal meiotic division resulting in the formation of a large haploid secondary oocyte and a tiny secondary polar body.
D The secondary follicle transforms into a tertiary follicle which is characterized by a fluid-filled cavity called the antrum.

The correct answer is:
The primary oocyte undergoes a second unequal meiotic division resulting in the formation of a large haploid secondary oocyte and a tiny secondary polar body.

Solution:
The primary oocyte first undergoes an unequal meiotic division resulting in the formation of a large haploid secondary oocyte and a tiny first polar body.

Topic: Biology, Human Reproduction, NEET
Which of the following statement is incorrect for ECG of human heart?

Options:
A It is graphical representation of the electrical activity of the heart during a cardiac cycle.
B The ECG of a person is obtained by using a machine called electrocardiogram.
C To obtain a standard ECG, a patient is connected to the machine with three electrical leads.
D Each peak in the ECG is identified with a letter from P to T that corresponds to a specific electrical activity of the heart.

The correct answer is:
The ECG of a person is obtained by using a machine called electrocardiogram.

Solution:
ECG is graphical representation of the electrical activity of the heart during a cardiac cycle. The ECG of a person is called electrocardiogram and is obtained by using a machine called electrocardiograph.

Topic: Biology, Body Fluids and Circulation, NEET
Which of the following statement is not correct about spermatogenesis?

Options:
A Spermatogonia multiply by mitotic division and increase in number
B Each spermatogonium is diploid and contains 46 chromosomes
C Some spermatogonia periodically undergo mitosis
D A primary spermatocyte completes first meiotic division leading to formation of two equal haploid cells called secondary spermatocyte

The correct answer is:
Some spermatogonia periodically undergo mitosis

Solution:
In testis, the immature male germ cells (spermatogonia) produce sperms by spermatogenesis that begins at puberty. The spermatogonia (sing. spermatogonium) present on the inside wall of seminiferous tubules multiply by mitotic division and increase in numbers. Each spermatogonium is diploid and contains 46 chromosomes. Some of the spermatogonia called primary spermatocytes periodically undergo meiosis. A primary spermatocyte completes the first meiotic division (reduction division) leading to the formation of two equal, haploid cells called secondary spermatocytes, which have only 23 chromosomes each. The secondary spermatocytes undergo the second meiotic division to produce four equal, haploid spermatids.

Topic: Biology, Human Reproduction, NEET
Which of the following statement is not incorrect?

Options:
A In the 1990s, Delhi ranked fourth among the 40 most polluted cities of the world.
B All the buses of Delhi were converted to run on CNG by the end of 2000.
C Euro III norms, for example, stipulate that sulphur be controlled at 350 parts-per-million (ppm) in diesel and 150 ppm in petrol.
D Mass Emission Standards (Bharat Stage II which is equivalent to Euro-II norms) are applicable in all the cities of India.

The correct answer is:
Euro III norms, for example, stipulate that sulphur be controlled at 350 parts-per-million (ppm) in diesel and 150 ppm in petrol.

Solution:
Euro III norms, for example, stipulate that sulphur be controlled at 350 parts-per-million (ppm) in diesel and 150 ppm in petrol. Aromatic hydrocarbons are to be contained at 42 percent of the concerned fuel. The goal, according to the roadmap, is to reduce sulphur to 50 ppm in petrol and diesel and bring down the level to 35 percent.
Mass Emission Standards (Bharat Stage II which is equivalent to Euro-II norms) are no more applicable in any of the cities of India.
In the 1990s, Delhi ranked fourth among the 41 most polluted cities of the world. All the buses of Delhi were converted to run on CNG by the end of 2002.

Topic: Biology, Environmental Issues, NEET
Which of the following statement is true for the packaging of DNA in eukaryotes?

A.DNA is packaged with a set of basic protein called histone.
B. Histone contain negatively charged amino acid in its side chain.
C. DNA packed with histone octamer are called nucleosome.
D. Nuclesome is further packed to form chromatin fibre.

Options:
A A, B & C are true
B A, B, C, and D are true
C B, C and D are true
D None of these

The correct answer is:
None of these

Solution:
In eukaryotes, DNA organisation is much more complex. There is a set of positively charged, basic proteins called histones. A protein acquires charge depending upon the abundance of amino acids residues with charged side chains. Histones are rich in the basic amino acid residues lysine and arginine. Both the amino acid residues carry positive charges in their side chains. Histones are organised to form a unit of eight molecules called histone octamer. The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which of the following statements about cork cambium is incorrect?

Options:
A It forms secondary cortex on its outerside
B It forms a part of periderm
C It is responsible for the formation of lenticels
D It is a couple of layers thick

The correct answer is:
It forms secondary cortex on its outerside

Solution:
Cork cambium or Phellogen develops from permanent tissue in the region of the epidermis. It produces a secondary cortex or phelloderm on its inner side. On the outer side it produces dead tissue called cork or phellum, just below the epidermis.

Topic: Biology, Anatomy of Flowering Plants, NEET, NEET 2020 (Phase 2)
Which of the following statements about oogenesis are incorrect?

I. The oogonia keep on adding in the ovary till puberty.

II. The primary oocytes are halted at prophase-I of meiotic division.

III. The fluid-filled cavity present in the primary follicle is called the antrum.

IV. The secondary oocyte forms a membrane called zona glomerulosa around it.

Options:
A II,Â IIIÂ andÂ IV
B I, III and IV
C IÂ andÂ II
D IIIÂ andÂ IV

The correct answer is:
I, III and IV

Solution:
I. No more oogonia are added to the ovary after birth.
III. The fluid-filled cavity present in the tertiary follicle is called the antrum.
IV. The secondary oocyte forms a membrane called zona pellucida around it.

Topic: Biology, Human Reproduction, NEET
Which of the following statements about proteins and amino acids is incorrect?

Options:
A Proteins have peptide bonds in them
B Proteins are present in the acid insoluble pool
C Amino acids form Zwitter ions
D Pleated structures in proteins form tertiary structure

The correct answer is:
Pleated structures in proteins form tertiary structure

Solution:
Biomolecules can be acid-insoluble i.e. macromolecules or acid-soluble i.e. micromolecules. Macromolecules are carbohydrates, protein, lipids, and nucleic acids. Proteins contain many amino acids that are linked by peptide bonds and are known as polypeptides. Amino acids contain two functional groups which can form zwitterions. Pleated structures in proteins form secondary structure.

Topic: Chemistry, Biomolecules, NEET
Which of the following statements about the human respiratory system are INCORRECT?

I. During swallowing, glottis can be covered by a thin elastic cartilaginous flap called epiglottis to prevent the entry of food into the larynx.

II. The trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the level of the fourth thoracic vertebra into a right and left primary bronchi.

III. The trachea, primary, secondary and tertiary bronchi, and initial bronchioles are supported by incomplete cartilaginous rings made up of hyaline cartilage.

IV. The respiratory part transports the atmospheric air to the alveoli, clears it from foreign particles, humidifies and also brings the air to body temperature.

Options:
A I and III
B II and IV
C I and II
D II, III and IV

The correct answer is:
II and IV

Solution:
During swallowing the glottis can be covered by a thin elastic flap called epiglottis. This prevents entry of food into larynx. Trachea is a straight tube that extends through the thoracic cavity and divided at the level of fifth thoracic vertebrae into right and left primary bronchi. The region is known as carinaThe trachea, bronchi and initial bronchioles show presence of incomplete cartilaginous rings. The nasal epithelium transports the atmospheric air to the alveoli, clears it from foreign particles and brings it to body temperature. This is the nasal part.

Topic: Biology, Breathing and Exchange of Gases, NEET
Which of the following statements about the plant depicted in the following image is incorrect?

Options:
A This plant produces two types of spore one large and the other small
B The development of the zygote into young embryo take place outside its female gametophyte
C It has strobilus or cone which are distinct compact structures formed from sporophylls
D This plant is placed is the same class as Lycopodium

The correct answer is:
The development of the zygote into young embryo take place outside its female gametophyte

Solution:
The plant depicted in the diagram is Selaginella. It is pteridophyte having vascular bundles. It has small leaves. The sporophytes bear sporangia that are subtended by leaf-like appendages called sporophylls. Sporophylls form distinct compact structures called strobili or cones. Selaginella produces two kinds of spores, macro (large) and micro (small) spores and is hence heterosporous. The megaspores and microspores germinate and give rise to female and male gametophytes, respectively. It is classified in the class Lycopsida with Lycopodium. The female gametophytes in these plants are retained on the parent sporophytes for variable periods. The development of the zygotes into young embryos take place within the female gametophytes.

Topic: Biology, Plant Kingdom, NEET
Which of the following statements about Werner's theory is correct?

Options:
A The primary valence is always non-ionizable.
B The secondary valence is variable for a given metal.
C Secondary valences are typically ionizable.
D Coordination compounds do not involve negative ions.

The correct answer is:
Secondary valences are typically ionizable.

Solution:
In Werner's theory, secondary valences are typically ionizable.

Topic: Chemistry, Coordination Compounds, NEET
Which of the following statements are correct?

1. Starch forms helical secondary structures while cellulose doesn't have complex helices.

2. Palmitic acid has 14 - CH2 groups in its structure.

3. Maltose is a disaccharide made up of glucose and fructose

4. The number of carbon and oxygen atoms present in glucose is less than those present in ribose.

Options:
A 1 and 2
B 3 and 4
C 1, 2 and 3
D 1, 2, 3 and 4

The correct answer is:
1 and 2

Solution:
Starch is a polysaccharide made up of many units of glucose. It consists of branched and unbranched structures both. Cellulose is also a polysaccharide and consists of only unbranched chains of glucose. We can differentiate between the two by use of Iodine. Iodine forms blue complex with starch as it forms helices with the branched part of starch. Palmitic acid has 16 carbons and the structure is CH3-CH214COOH . Maltose is a disaccharide and consists of two glucose molecules. Glucose is a hexose sugar and ribose is pentose sugar. Hence glucose formula is C6H12O6 while Ribose is C5H10O5 .

Topic: Chemistry, Biomolecules, NEET
Which of the following statements are correct?

A. Basophils are most abundant cells of the WBCs

B. Basophils secrete histamine, serotonin and heparin

C. Basophils are involved in inflammatory response

D. Basophils have kidney shaped nucleus

E. Basophils are agranulocytes.

Choose the correct answer from the options below:

Options:
A A and B only
B D and E only
C C and E only
D B and C only

The correct answer is:
B and C only

Solution:
White blood cells include neutrophils, lymphocytes, monocytes, eosinophils, and basophils. Among these different types of WBCs, neutrophils are the most abundant and make 60-70% of the total WBCs present in the blood. Basophils are the least abundant WBCs and make only 0.5-1.0% of it. Eosinophils and monocytes make 2-4% and 3-8% of the total WBCs respectively.

Eosinophils also called acidophils have a bilobed nucleus, Basophils have two or three lobed S shaped nucleus, Kidney shaped nucleus or Bean shaped nucleus is present in Monocytes.

Basophils, neutrophils, and eosinophils are granulocytes. Lymphocytes and Monocytes, on the other hand, are agranulocytes.

Basophils appear in more number during allergic reactions or inflammatory reactions. They produce heparin to prevent blood clotting and histamine and serotonin to induce inflammation. Hence, option D is correct.

Topic: Biology, Body Fluids and Circulation, NEET, NEET 2023 (All India)
Which of the following statements are correct?
a) The isotope of carbon containing 7 neutrons has natural abundance of 1.1%
b) Among the IV A group elements, Sn has the lowest melting point
c) Silicon is the 2nd (by mass) most abundant element in the earth's crust
d) Elemental carbon shows the highest electrical resistivity among the 14 group elements

Options:
A a, c and d only
B a, b and c only
C b, c and d only
D a, b, c and d

The correct answer is:
a, b, c and d

Solution:
a) The isotope of carbon containing 7 neutrons has natural abundance of 1.1%. This statement is correct because the C613 has the natural abundance of 1.1%.
b) Among the IV A group elements, Sn has the lowest melting point. This statement is correct because the melting point decreases down the group.
c) Silicon is the 2nd (by mass) most abundant element in the earth's crust. This statement is correct because it has the 27.7% of earth crust.
d) Elemental carbon shows the highest electrical resistivity among the 14 group elements. This statement is correct because the graphite has the low resistivity and higher conductivity.

Hence, all the statements are correct.

Topic: Chemistry, p Block Elements (Group 13 & 14), TS EAMCET, TS EAMCET 2021 (04 Aug Shift 1)
Which of the following statements are correct about the plant known as 'Terror of Bengal'?

I. It has been a native of India since hundreds of years.
II. It is commonly called water hyacinth and have mauve flowers.
III. Its scientific name is Eicchornia crassipes.
IV. It causes disturbance in ecosystem dynamics of water body in a short span of time.

Options:
A III and IV
B II and IV
C II, III and IV
D I, II, III and IV

The correct answer is:
II, III and IV

Solution:
Plant of water hyacinth Eicchornia crassipes is known by 'Terror of Bengal'. It grows abundantly in eutrophic water bodies and can cause blocks in waterways. They give distinct colour to water, deteriorate the quality of water and are extremely harmful to fishes. They grow rapidly and are responsible for imbalance in water body ecosystem. They are native to Brazil and were introduced in India by the British

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following statements are CORRECT?

I. Amino acids are organic compounds containing an amino group and an acidic group as substituents on the same carbon i.e., the α-carbon.

II. Primary metabolites have identifiable functions and play known roles in normal physiological processes.

III. Ribulose Bisphosphate Carboxylase-Oxygenase (RUBISCO) is the most abundant protein in the whole of the biosphere.

IV. Starch forms helical primary structures and it can hold I2 molecules in the helical portion.

Options:
A I and III
B II and IV
C I, II, III and IV
D I, II and III

The correct answer is:
I, II and III

Solution:
Amino acids contain acidic and amino groups attached to the carbon. Metabolites can be primary or secondary. Primary metabolites are those that take part in primary functions like carbohydrates, proteins etc. Secondary are those that do not directly take part in function. Examples: Alkaloids, morphine etc. RUBISCO is the most abundant protein in the whole biosphere while collagen is abundant in animal world. Starch is homopolysaccharide that has branched and straight chains and thus can form secondary helical structures that can hold iodine.

Topic: Chemistry, Biomolecules, NEET
Which of the following statements are not correct?
1- y as a function of $x$ is not defined for all real $x$.
2- y as a function of $x$ is not continuous at $x=0$.
3- y as a function of $\mathrm{x}$ is differentiable for all $\mathrm{x}$. Select the correct answer using the code given below.
Consider the equation $\mathrm{x}+|\mathrm{y}|=2 \mathrm{y}$

Options:
A 1 and 2 only
B 2 and 3 only
C 1 and 3 only
D 1,2 and 3

The correct answer is:
1,2 and 3

Solution:
$x+|y|=2 y$
$x=2 y-|y|$
$2 y-|y|=x$
$2 y-y=x \quad[$ for $y \geq 0]$
$y=x$
$2 y+y=x \quad[$ for $y < 0]$
$3 y=x$
$y=\frac{1}{3} x$
$y=\left\{\begin{array}{ll}x & y \geq 0 \\ \frac{1}{3} x & y < 0\end{array}\right.$ function is defined for all value of $\mathrm{x}$.
or $\mathrm{y}=\left\{\begin{array}{ll}x & ; & x \geq 0 \\ \frac{1}{3} x & ; & x < 0\end{array}\right.$
$\therefore$ by checking $y$ as a function of $x$ is continuous at $x=0$, but not differentiable at $x=0$. So all of the statements are not correct.

Topic: Mathematics, Continuity and Differentiability, NDA, NDA 2016 (Phase 1)
Which of the following statements are the functions of a medullary ray in plants?

(i) Storage of food
(ii) Secondary growth
(iii) Transmission of water and food
(iv) Seat of origin of inter-fascicular cambium

Options:
A i, ii and iii
B i, iii and iv
C ii, iii and iv
D Only i and iii

The correct answer is:
i, iii and iv

Solution:
Medullary or pith rays are essential for the radial conduction of the water, minerals and other organic substances. They transport the substances from center to periphery. These rays are also known as vascular rays or pith rays. They are also the site of origin of inter-fascicular cambium.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which of the following statements are true?

Options:
A If \(f(x)\) be continuous and periodic with periodicity \(T\), then \(I=\int_a^{a+T} f(x) d x\) depend on ' \(a\) '.
B If \(f(x)\) be continuous and periodic with periodicity \(T\), then \(I=\int_a^{a+T} f(x) d x\) does not depend on ' \(a\) '.
C Let \(f(x)=\left\{\begin{array}{l}1 \text {, if } x \text { is rational } \\ 0, \text { if } x \text { is irrational }\end{array}\right.\), then \(f\) is periodic of the periodicity \(T\) only if \(T\) is rational
D \(f\) defined in (C) is periodic for all \(T\)

The correct answers are:
If \(f(x)\) be continuous and periodic with periodicity \(T\), then \(I=\int_a^{a+T} f(x) d x\) does not depend on ' \(a\) '., \(f\) defined in (C) is periodic for all \(T\)

Solution:
Hint: (A) \(I=\int_a^{a+T} f(x) d x=\int_0^T f(x) d x\) Independent of a
(B) \(I=\int_a^{a+T} f(x) d x=\int_0^T f(x) d x\) does not depend on ' \(a\) '
(C) \(f(x)=\left\{\begin{array}{l}1, x \in Q \\ 0, x \notin Q\end{array}\right.\) is periodic for all \(T\) with undefined fundamental period.
(D) \(f\) defined on \((C)\) is periodic for all \(T\) with undefined fundamental period.

Topic: Mathematics, Definite Integration, WBJEE, WBJEE 2023