datavorous/entrance-exam-dataset huggingface dataset:
What is the function of the selective secretion of H⁺ and K⁺ ions in the collecting duct in maintaining the ionic balance of blood in mammals?

Options:
A To increase the pH of the blood
B To increase the concentration of K⁺ ions in the blood
C To decrease the concentration of H⁺ ions in the blood
D To maintain the pH and ionic balance of blood

The correct answer is:
To maintain the pH and ionic balance of blood

Solution:
The collecting duct plays a role in the maintenance of pH and ionic balance of blood by the selective secretion of H⁺ and K⁺ ions.

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

Options:
A To protect the alimentary canal
B To control the movement of food
C To aid in absorption of nutrients
D To provide support and cushioning

The correct answer is:
To provide support and cushioning

Solution:
The serosa layer is the outermost layer of the alimentary canal and it's main function is to provide support and cushioning to the alimentary canal. This layer is made up of a thin mesothelium (epithelium of visceral organs) with some connective tissues and helps in protecting the alimentary canal.

Topic: Biology, Digestion and Absorption, NEET
What is the function of the serosa layer?

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 protect the alimentary canal

Solution:
The serosa layer is the outermost layer of the alimentary canal and its main function is to protect the alimentary canal by providing a smooth and lubricated surface for the muscles to contract against.

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

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

The correct answer is:
Filter of the blood

Solution:
The spleen mainly contains lymphocytes and phagocytes. It acts as a filter of the blood by trapping blood-borne microorganisms. It also has a large reservoir of erythrocytes.

Topic: Biology, Human Health and Diseases, NEET
What is the function of the thermostable DNA polymerase used in PCR?

Options:
A To degrade the DNA
B To extend the primers
C To remain active during the high temperature induced denaturation of double stranded DNA
D To amplify the DNA

The correct answer is:
To remain active during the high temperature induced denaturation of double stranded DNA

Solution:
The thermostable DNA polymerase used in PCR, which is isolated from a bacterium called Thermus aquaticus, remains active during the high temperature induced denaturation of double stranded DNA.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the function of the thoracic chamber in relation to the lungs?

Options:
A To protect the lungs from external factors
B To maintain the shape of the lungs
C To ensure changes in the volume of the thoracic cavity reflect in the pulmonary cavity
D To provide structural support for the lungs

The correct answer is:
To ensure changes in the volume of the thoracic cavity reflect in the pulmonary cavity

Solution:
The thoracic chamber is an air-tight chamber that is formed by various bones and muscles. Its anatomical setup ensures that any change in the volume of the thoracic cavity will be reflected in the lung (pulmonary) cavity, which is essential for breathing.

Topic: Biology, Breathing and Exchange of Gases, NEET
What is the function of Vasopressin hormone?

Options:
A Stimulation of growth hormone secretion
B Stimulation of steroid hormone secretion
C Stimulation of resorption of water and electrolytes
D Stimulation of contraction of uterus

The correct answer is:
Stimulation of resorption of water and electrolytes

Solution:
Vasopressin acts mainly at the kidney and stimulates resorption of water and electrolytes by the distal tubules and thereby reduces loss of water through urine (diuresis).

Topic: Biology, Chemical Coordination and Integration, NEET
What is the general trend in atomic and ionic radii from fluorine to iodine in Group 17?

Options:
A Decrease
B Increase
C Remain constant
D Show irregular variation

The correct answer is:
Increase

Solution:
The general trend in atomic and ionic radii from fluorine to iodine in Group 17 is an increase due to the increasing number of quantum shells.**

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the general trend in reactivity of alkali metals with water as you move down the group?

Options:
A Reactivity increases
B Reactivity decreases
C Reactivity remains constant
D Reactivity fluctuates unpredictably

The correct answer is:
Reactivity increases

Solution:
The general trend in reactivity of alkali metals with water is that it increases as you move down the group, with the lower alkali metals reacting more vigorously than the higher ones.

Topic: Chemistry, s Block Elements, NEET
What is the general trend in the acid strength of alcohols when electron-releasing groups are attached to the alkyl chain?

Options:
A Acid strength increases
B Acid strength decreases
C Acid strength remains unchanged
D Acid strength becomes unpredictable

The correct answer is:
Acid strength decreases

Solution:
Electron-releasing groups decrease the acid strength of alcohols.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the general trend in the covalency of halides in higher oxidation states?

Options:
A Increases
B Decreases
C Remains constant
D Depends on the halogen

The correct answer is:
Increases

Solution:
The covalency of halides in higher oxidation states generally increases.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the general trend in the hardness of lanthanoids with increasing atomic number?

Options:
A The hardness decreases
B The hardness remains constant
C The hardness increases
D The hardness fluctuates randomly

The correct answer is:
The hardness increases

Solution:
The hardness increases with increasing atomic number, samarium being steel hard.

Topic: Chemistry, d and f Block Elements, NEET
What is the general trend in the melting points of transition metals as the atomic number increases within a row?

Options:
A They rise to a maximum
B They fall regularly
C They remain constant
D They fluctuate randomly

The correct answer is:
They fall regularly

Solution:
The melting points of transition metals fall regularly as the atomic number increases.

Topic: Chemistry, d and f Block Elements, NEET
What is the half-life period of a radioactive material if its activity drops to 116th of its initial value of 30 years ?

Options:
A 9.5 years
B 8.5 years
C 7.5 years
D 10.5 years

The correct answer is:
7.5 years

Solution:
Activity of a radioactive material is given by A=A0e-λt, here, λ- is decay constant.

Taking logarithmic function both sides,

⇒-λt=lnAA0

Using relation between half life and decay constant,

⇒-ln2t12×30=ln116

⇒-ln2t12×30=-4ln2

⇒t12=304=7.5 yrs

Topic: Physics, Nuclear Physics, JEE Main, JEE Main 2022 (27 Jul Shift 1)
What is the hardness of a water sample (in terms of equivalents of CaCO3) containing 10-3M CaSO4?
(Molar mass of CaSO4=136 g  mol-1)

Options:
A 90 ppm
B 50 ppm
C 10 ppm
D 100 ppm

The correct answer is:
100 ppm

Solution:
As 1 L solution have 10-3 mol CaSO4
Eq.  of CaSO4=eq.  of CaCO3
In 1 L solution
nCaSO4×v.f=nCaCO3×v.f.
10-3×2=nCaCO3×2
nCaCO3=10-3 mol in 1 L
∴WCaCO3=100×10-3g   in 1 L solution
∴ hardness in terms of CaCO3
=WCaCO2Wtotal×106=100×10-3 g1000 g×106=100 ppm

Topic: Chemistry, Hydrogen, JEE Main, JEE Main 2019 (12 Jan Shift 1)
What is the Hardy-Weinberg principle?

Options:
A It states that allele frequencies in a population are stable and constant from generation to generation
B It states that the gene pool in a population is constantly changing
C It states that the frequency of alleles in a population increases over time
D It states that the frequency of alleles in a population decreases over time

The correct answer is:
It states that allele frequencies in a population are stable and constant from generation to generation

Solution:
The Hardy-Weinberg principle states that allele frequencies in a population are stable and remain constant from generation to generation, unless acted upon by external forces such as natural selection, genetic drift, mutation, or migration.

Topic: Biology, Evolution, NEET
What is the impact of eutrophication on dissolved oxygen levels in water bodies?

Options:
A Increases the dissolved oxygen levels
B Maintains the dissolved oxygen levels
C Decreases the dissolved oxygen levels
D Has no impact on dissolved oxygen levels

The correct answer is:
Decreases the dissolved oxygen levels

Solution:
Eutrophication overstimulates the growth of algae, which can rob the water of dissolved oxygen, vital to other aquatic life, and lead to further depletion of the water's dissolved oxygen content, resulting in a decline.

Topic: Biology, Environmental Issues, NEET
What is the impact of frequent glaciations in temperate regions on species diversity?

Options:
A Promotes species diversity
B Decreases species diversity
C Has no impact
D Increases species diversity

The correct answer is:
Decreases species diversity

Solution:
Ecologists and evolutionary biologists have proposed that unlike temperate regions subjected to frequent glaciations in the past, tropical latitudes have remained relatively undisturbed for millions of years and thus, had a long evolutionary time for species diversification. Frequent glaciations in temperate regions have decreased species diversity.

Topic: Biology, Biodiversity and its Conservation, NEET
What is the importance of cleanliness and hygiene in dairy farming?

Options:
A It helps to reduce the chance of direct contact between the produce and the handler
B It is mandatory for regular inspections
C It is not important
D It helps to identify and rectify problems early

The correct answer is:
It helps to reduce the chance of direct contact between the produce and the handler

Solution:
Maintaining stringent cleanliness and hygiene is important in dairy farming to reduce the chance of direct contact between the produce and the handler.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is the importance of tubular secretion in urine formation?

Options:
A to maintain the volume of filtrate
B to maintain the ionic and acid base balance of body fluids
C to remove excess water
D to remove waste products

The correct answer is:
to maintain the ionic and acid base balance of body fluids

Solution:
During urine formation, the tubular cells secrete substances like H⁺, K⁺ and ammonia into the filtrate. Tubular secretion is also an important step in urine formation as it helps in the maintenance of ionic and acid base balance of body fluids.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the impulse of a bowling ball that has mass $10 \mathrm{~kg}$ that hits bowling pins going at $2 \frac{\mathrm{m}}{\mathrm{s}}$, and slows to $1 \frac{\mathrm{m}}{\mathrm{s}}$ after striking the bowling pins?

Options:
A 0N . s
B 10N . s
C 20N . s
D 5N . s

The correct answer is:
10N . s

Solution:
Impulse is defined as the change in momentum.
$J=\left|p_{\text {final }}-p_{\text {initial }}\right|$
Where $J$ is the impulse, $p_{\text {final }}$ is final momentum and $p_{\text {initial }}$ is the initial momentum. Recall:
$p=m v$
Where $m$ is mass and $v$ is velocity.
Our bowling ball has a mass of $10 \mathrm{~kg}$, with initial velocity of $2 \frac{\mathrm{m}}{\mathrm{s}}$ and final velocity of $1 \frac{\mathrm{m}}{\mathrm{s}}$.
$\begin{aligned} & p_{\text {final }}=m * v_{\text {final }}=10 \mathrm{~kg} * 1 \frac{m}{\mathrm{~s}}=10 \mathrm{~N} \cdot \mathrm{s} \\ & p_{\text {initial }}=m * v_{\text {initial }}=10 \mathrm{~kg} * 2 \frac{\mathrm{m}}{\mathrm{s}}=20 \mathrm{~N} \cdot \mathrm{s}\end{aligned}$
Plug in these two values into the equation for impulse and solve.
$J=|20-10| N \cdot s=10 N \cdot s$

Topic: Physics, Center of Mass Momentum and Collision, JEE Main
What is the intensity of gravitational field of the centre of a spherical shell

Options:
A $G m / r^2$
B $g$
C Zero
D None of these

The correct answer is:
Zero

Solution:
Explanation of the correct answer:
1. The intensity of the gravitational force at the center of the earth is zero.
2. The equation of the intensity of the gravitational force can be written as: $g^{\prime}=g\left(1-\frac{H}{R}\right)$ where $g$ is the acceleration due to gravity, $g^{\prime}$ is the acceleration due to gravity at the distance $H, R$ is the radius of the earth.
3. At the center of the earth, the distance from the center of the earth from the surface is equal to its radius.
The equation can be written as: $g^{\prime}=g\left(1-\frac{R}{R}\right)=0$,
Hence, the intensity of the gravitational field at the center of a spherical shell is zero.

Topic: Physics, Gravitation, JEE Main
What is the interval in which the function $\mathrm{f}(\mathrm{x})=\sqrt{9-\mathrm{x}^{2}}$ is increasing? $(f(x)>0)$

Options:
A $0 < x < 3$
B $-3 < x < 0$
C $\quad 0 < \mathrm{x} < 9$
D $-3 < x < 3$

The correct answer is:
$-3 < x < 0$

Solution:
$f(x)=\sqrt{9-x^{2}}$
$f^{\prime}(x)=\frac{1}{2 \sqrt{9-x^{2}}} \times(-2 x)=-\frac{x}{\sqrt{9-x^{2}}}$
For function to be increasing
$-\frac{x}{\sqrt{9-x^{2}}}>0$
or $-x>0$ or $x < 0$
but $\sqrt{9-\mathrm{x}^{2}}$ is defined only when $9-x^{2}>0$ or $x^{2}-9 < 0$
$(x+3)(x-3) < 0$
ie $-3 < x < 3$
$-3 < x < 3 \cap x < 0$
$\Rightarrow-3 < x < 0$

Topic: Mathematics, Application of Derivatives, JEE Main
What is the inverse of $\mathrm{A}=\left[\begin{array}{cc}1+\mathrm{i} & 1+\mathrm{i} \\ -1+\mathrm{i} & 1-\mathrm{i}\end{array}\right]$?

Options:
A $\frac{1}{4}\left[\begin{array}{cc}1-\mathrm{i} & -1-\mathrm{i} \\ 1-\mathrm{i} & 1+\mathrm{i}\end{array}\right]$
B $\frac{1}{4}\left[\begin{array}{cc}1+i & -1+i \\ 1+i & -1-i\end{array}\right]$
C $\frac{1}{4}\left[\begin{array}{cc}1+i & 1-i \\ -1-i & 1+i\end{array}\right]$
D $\frac{1}{4}\left[\begin{array}{cc}1+i & 1-i \\ -1-i & -1+i\end{array}\right]$

The correct answer is:
$\frac{1}{4}\left[\begin{array}{cc}1-\mathrm{i} & -1-\mathrm{i} \\ 1-\mathrm{i} & 1+\mathrm{i}\end{array}\right]$

Solution:
We know that
If $\mathrm{A}=\left[\begin{array}{ll}\mathrm{a} & \mathrm{b} \\ \mathrm{c} & \mathrm{d}\end{array}\right], \operatorname{adj} \mathrm{A}=\left[\begin{array}{cc}\mathrm{d} & -\mathrm{b} \\ -\mathrm{c} & \mathrm{a}\end{array}\right]$
and $|\mathrm{A}|=\mathrm{ad}-\mathrm{bc}$
$\mathrm{A}^{-1}=\frac{\operatorname{adj} \mathrm{A}}{|\mathrm{A}|}$ if $|\mathrm{A}| \neq 0$
So, $\mathrm{A}^{-1}=\frac{1}{\mathrm{ad}-\mathrm{bc}}\left[\begin{array}{cc}\mathrm{d} & -\mathrm{b} \\ -\mathrm{c} & \mathrm{a}\end{array}\right]=\frac{1}{|\mathrm{~A}|}\left[\begin{array}{cc}\mathrm{d} & -\mathrm{b} \\ -\mathrm{c} & \mathrm{a}\end{array}\right]$
Given that $\mathrm{A}=\left[\begin{array}{cc}1+\mathrm{i} & 1+\mathrm{i} \\ -1+\mathrm{i} & 1-\mathrm{i}\end{array}\right]$
Then adj $\mathrm{A}=\left[\begin{array}{cc}1-\mathrm{i} & -1-\mathrm{i} \\ 1-\mathrm{i} & 1+\mathrm{i}\end{array}\right]$
and, $|\mathrm{A}|=\left|\begin{array}{cc}1+\mathrm{i} & 1+\mathrm{i} \\ -1+\mathrm{i} & 1-\mathrm{i}\end{array}\right|$
$=\left(1-i^{2}\right)-\left(i^{2}-1\right)=\left(1-i^{2}-i^{2}+1\right)=1+1+1+1=4$
$\Rightarrow \quad \mathrm{A}^{-1}=\frac{1}{4}\left[\begin{array}{cc}1-\mathrm{i} & -1-\mathrm{i} \\ 1-\mathrm{i} & 1+\mathrm{i}\end{array}\right]$

Topic: Mathematics, Matrices, JEE Main
What is the IUPAC name of given compound?

Options:
A 3-(3,4-dihydroxy-5 hydroxymethylcyclohexyl)-2-phenylpropane nitrile
B 3-(4,5-dihydroxy-3 hydroxymethylcyclohexyl)-2-phenylpropane nitrile
C 5-(2-cyano-2-phenyl)ethyl-3-hydroxylmethylcyclohexane-1,2 diol
D 4-(2-cyano-2-phenyl)ethyl-6-hydroxylmethylcyclohexane-1,2 diol

The correct answer is:
3-(3,4-dihydroxy-5 hydroxymethylcyclohexyl)-2-phenylpropane nitrile

Solution:
Principal function group = cyanide
Suffix - Nitrile
Word root - prop
IUPAC Name: 3-(3,4-dihydroxy-5-hydroxy methyl cyclohexyl)-2-phenyl propane nitrile

Topic: Chemistry, General Organic Chemistry, JEE Main
What is the IUPAC name of the following compound?

Options:
A 4-Bromo-3-methylpent-2-ene
B 3-Bromo-3-methyl-1, 2-dimethylprop-1-ene
C 2-Bromo-3-methyl pent-3-ene
D 3-Bromo-1, 2-dimethylbut-1-ene

The correct answer is:
4-Bromo-3-methylpent-2-ene

Solution:

Topic: Chemistry, General Organic Chemistry, JEE Main, JEE Main 2019 (10 Jan Shift 2)
What is the IUPAC name of the following compounds?

Options:
A Non-2-en-1-al (cockroach repellent found in cucumber)
B Non-3-en-1-al (cockroach repellent found in cucumber)
C Non-4-en-2-al (cockroach repellent found in cucumber)
D Non-4-en-3-al (cockroach repellent found in cucumber)

The correct answer is:
Non-2-en-1-al (cockroach repellent found in cucumber)

Solution:
​

Topic: Chemistry, General Organic Chemistry, JEE Main
What is the IUPAC name of the organic compound formed in the following chemical reaction?

Options:
A 2 -methyl propan-2-ol
B pentan-2-ol
C pentan-3-ol
D 2 -methylbutan-2-ol

The correct answer is:
2 -methylbutan-2-ol

Solution:
The compound contain four carbons in the Longest chain, main functional group is alcohol (suffix name ol) and methyl group attached at 2nd position.

Hence, the IUPAC Name is 2 -methylbutan-2-ol

Topic: Chemistry, Alcohols Phenols and Ethers, NEET, NEET 2021
What is the IUPAC nomenclature of isoprene monomer present in natural rubber?

Options:
A 2-methyl-1, 3-butadiene
B 1,3-Hexadiene
C 2, 3-Dimethyl-1, 3-butadiene
D 2-Methyl-1, 3-pentadiene

The correct answer is:
2-methyl-1, 3-butadiene

Solution:

Topic: Chemistry, Polymers, JEE Main
What is the IUPAC nomenclature of vanillin used as a flavouring agent in ice-cream?

Options:
A 3-Chloro-4-methoxy benzoic acid
B 4,6-Dimethoxy benzaldehyde
C 3,4-Dihydroxy benzaldehyde
D 4-Hydroxy-3-methoxy benzaldehyde

The correct answer is:
4-Hydroxy-3-methoxy benzaldehyde

Solution:

Topic: Chemistry, Chemistry in Everyday Life, JEE Main
What is the key difference between minimum boiling azeotropes and maximum boiling azeotropes?

Options:
A Minimum boiling azeotropes have a higher boiling point than maximum boiling azeotropes.
B Minimum boiling azeotropes boil at a specific temperature, while maximum boiling azeotropes have varying boiling points.
C Minimum boiling azeotropes have a constant composition in both the liquid and vapor phases, while maximum boiling azeotropes do not.
D Minimum boiling azeotropes are formed by solutions with a large negative deviation from Raoult's law, whereas maximum boiling azeotropes are formed by solutions with a large positive deviation.

The correct answer is:
Minimum boiling azeotropes have a constant composition in both the liquid and vapor phases, while maximum boiling azeotropes do not.

Solution:
The key difference between minimum boiling azeotropes and maximum boiling azeotropes lies in their behavior regarding composition. Minimum boiling azeotropes have a constant composition in both the liquid and vapor phases at a specific boiling temperature. In contrast, maximum boiling azeotropes do not maintain a constant composition in both phases throughout the boiling process. This difference is essential in understanding the unique characteristics of these two types of azeotropes.

Topic: Chemistry, Solutions, NEET
What is the Kohlrausch law of independent migration of ions?

Options:
A It states that molar conductivity depends on the type of solvent.
B It states that molar conductivity is directly proportional to concentration.
C It states that molar conductivity is the sum of individual ion contributions.
D It states that molar conductivity remains constant with concentration.

The correct answer is:
It states that molar conductivity is the sum of individual ion contributions.

Solution:
The Kohlrausch law of independent migration of ions, which states that "limiting molar conductivity of an electrolyte can be represented as the sum of the individual contributions of the anion and cation of the electrolyte.”

Topic: Chemistry, Electrochemistry, NEET
What is the linear velocity if the angular velocity vector is Ïââ=â3âi^â4âj^+âk^ and position vector is rââ=â5âi^â6âj^+6âk^ ?

Options:
A 6 i^+2 j^−3 k^
B −18 i^−13 j^+2 k^
C 18 i^+13 j^−2 k^
D 6 i^−2 j^+8 k^

The correct answer is:
−18 i^−13 j^+2 k^

Solution:
As we know that
v→ = ω→ × r→ = (3 i^−4 j^+k^) × (5 i^−6 j^+6 k^)
∴    w→×  r→=|i^j^k^3−415−66|or  w→×  r→= i^ (−24+6)+j^(5−18)+k^(−18+20)
= −18 i^−13 j^+2 k^

Topic: Physics, Laws of Motion, JEE Main
What is the magnetic field at the centre of arc in the figure below?

Options:
A \( \frac{\mu_{0}}{4 \pi} \cdot \frac{2 i}{r}[\sqrt{2}+\pi] \)
B \( \frac{\mu_{0}}{4 \pi} \cdot \frac{2 i}{r}\left[\sqrt{2}+\frac{\pi}{4}\right] \)
C \( \frac{\mu_{0}}{4 \pi} \cdot \frac{i}{r}[\sqrt{2}+\pi] \)
D \( \frac{\mu_{0}}{4 \pi} \cdot \frac{i}{r}\left[\sqrt{2}+\frac{\pi}{4}\right] \)

The correct answer is:
\( \frac{\mu_{0}}{4 \pi} \cdot \frac{2 i}{r}\left[\sqrt{2}+\frac{\pi}{4}\right] \)

Solution:
Distance of straight path from O

=r2

Hence, B=B1+B2

=μ04π·2jr2+μ04π2πir14

=μ04π·2jr2+π4

Topic: Physics, Magnetic Effects of Current, JEE Main
What is the main advantage of electrodialysis over ordinary dialysis?

Options:
A It requires a smaller membrane
B It is effective even with pure colloidal solutions
C It is less expensive
D It does not use electrodes

The correct answer is:
It is effective even with pure colloidal solutions

Solution:
The main advantage of electrodialysis over ordinary dialysis is that it is effective even with pure colloidal solutions.

Topic: Chemistry, Surface Chemistry, NEET
What is the main advantage of using biofertilisers in agriculture?

Options:
A It reduces environmental pollution
B It increases soil fertility
C It reduces dependence on chemical fertilisers
D All of the above

The correct answer is:
All of the above

Solution:
Biofertilisers are organisms that enrich the soil's nutrient quality and reduce the dependence on chemical fertilisers, thus reducing environmental pollution.

Topic: Biology, Microbes in Human Welfare, NEET
What is the main advantage of using computers in Numerical Taxonomy?

Options:
A It allows for the consideration of hundreds of characteristics at the same time
B It allows for the assignment of numerical codes to different characteristics
C It allows for the processing of data in a quick and efficient manner
D All of the above

The correct answer is:
All of the above

Solution:
The main advantage of using computers in Numerical Taxonomy is that it allows for the consideration of hundreds of characteristics at the same time, the assignment of numerical codes to different characteristics, and the processing of data in a quick and efficient manner.

Topic: Biology, Plant Kingdom, NEET
What is the main advantage of using modified vectors for gene delivery in plants and animals?

Options:
A They are still able to use the mechanisms of pathogens to deliver genes
B They are no longer pathogenic to their hosts
C They are able to deliver genes of interest into humans
D They are able to transform normal cells into cancerous cells

The correct answer is:
They are no longer pathogenic to their hosts

Solution:
The main advantage of using modified vectors for gene delivery in plants and animals is that they have been disarmed and are no longer pathogenic to their hosts, but are

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the main advantage of using PCR in diagnosing diseases?

Options:
A Early detection of pathogen
B Serum and urine analysis
C Amplification of nucleic acid
D Autoradiography

The correct answer is:
Early detection of pathogen

Solution:
PCR can detect very low amounts of DNA, even when the disease symptoms are not yet visible, making it possible to diagnose diseases at an early stage.

Topic: Biology, Biotechnology and Its Applications, NEET