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Questions and Answers
Which enzyme is responsible for separating parental strands of DNA during replication?
Which enzyme is responsible for separating parental strands of DNA during replication?
- Primase
- Ligase
- Helicase (correct)
- Topoisomerase
What process does the formation of 3-phosphoglyceric acid from 1,3-diphosphoglyceric acid exemplify?
What process does the formation of 3-phosphoglyceric acid from 1,3-diphosphoglyceric acid exemplify?
- Electron transport chain
- Oxidative phosphorylation
- Substrate level phosphorylation (correct)
- Dehydrogenation
Which vitamin deficiency is associated with night blindness in humans?
Which vitamin deficiency is associated with night blindness in humans?
- Vitamin C
- Vitamin D
- Vitamin K
- Vitamin A (correct)
What is the dominant trait of a cat with homozygous white skin, black eye, and curl tail?
What is the dominant trait of a cat with homozygous white skin, black eye, and curl tail?
Which greenhouse gases combination contributes most to global warming?
Which greenhouse gases combination contributes most to global warming?
In the scenario where lactate dehydrogenase gene is non-functional, which product accumulates?
In the scenario where lactate dehydrogenase gene is non-functional, which product accumulates?
Which statement is incorrect regarding cAMP as a second messenger?
Which statement is incorrect regarding cAMP as a second messenger?
What is the primary function of the Taq polymerase during Polymerase Chain Reaction?
What is the primary function of the Taq polymerase during Polymerase Chain Reaction?
What is the phase difference between the waves y1 = A sin (ωt + kx) and y2 = A cos (ωt + kx)?
What is the phase difference between the waves y1 = A sin (ωt + kx) and y2 = A cos (ωt + kx)?
Which of the following correctly orders the time periods of oscillation for blocks of wood, glass, and copper when attached to a spring?
Which of the following correctly orders the time periods of oscillation for blocks of wood, glass, and copper when attached to a spring?
What is the initial speed of the neutron that causes a He-atom to recoil with a speed of 2 × 10^5 m/s in an elastic collision?
What is the initial speed of the neutron that causes a He-atom to recoil with a speed of 2 × 10^5 m/s in an elastic collision?
In a composite slab with layers of different thermal conductivities, where T1 > T2, which layer experiences the maximum heat flow rate?
In a composite slab with layers of different thermal conductivities, where T1 > T2, which layer experiences the maximum heat flow rate?
Which action corresponds correctly to the type of radiation produced listed in Group I?
Which action corresponds correctly to the type of radiation produced listed in Group I?
When a rigid conducting wire moves on conducting rails in a uniform magnetic field, what induces an electromotive force (emf)?
When a rigid conducting wire moves on conducting rails in a uniform magnetic field, what induces an electromotive force (emf)?
If a neutron collides elastically with a He-atom, what principle must hold true for both momentum and kinetic energy?
If a neutron collides elastically with a He-atom, what principle must hold true for both momentum and kinetic energy?
How does the thermal conductivity of layers influence the rate of heat transfer through them?
How does the thermal conductivity of layers influence the rate of heat transfer through them?
What is the magnitude of the induced emf if the current flow is clockwise?
What is the magnitude of the induced emf if the current flow is clockwise?
What will be the horizontal range of a ball projected at an angle of 30° with an initial velocity of 10 m/s?
What will be the horizontal range of a ball projected at an angle of 30° with an initial velocity of 10 m/s?
Considering the magnetic fields induced by current in parallel wires, which statement is true between B P, BQ, and BR?
Considering the magnetic fields induced by current in parallel wires, which statement is true between B P, BQ, and BR?
If an object weighs 50 N on Earth, what is its mass on a planet where gravitational acceleration is 2 m/s²?
If an object weighs 50 N on Earth, what is its mass on a planet where gravitational acceleration is 2 m/s²?
How much energy is consumed by the 80 W fan when operated for 15 hours?
How much energy is consumed by the 80 W fan when operated for 15 hours?
What is the total energy consumed when using a 60 W bulb for 20 hours?
What is the total energy consumed when using a 60 W bulb for 20 hours?
Which of the following statements about the direction of the induced current is correct?
Which of the following statements about the direction of the induced current is correct?
If an object weighs 50 N on Earth, what weight will it have on a planet with g = 5 m/s²?
If an object weighs 50 N on Earth, what weight will it have on a planet with g = 5 m/s²?
Which combination of compounds is soluble in aqueous NaOH but not in aqueous NaHCO3?
Which combination of compounds is soluble in aqueous NaOH but not in aqueous NaHCO3?
What is the expected major product after the reaction sequence using O3, Zn/H2O, followed by conc. NaOH and aq. acid?
What is the expected major product after the reaction sequence using O3, Zn/H2O, followed by conc. NaOH and aq. acid?
What is the major product formed in the E-2 elimination reaction involving Br and H3C?
What is the major product formed in the E-2 elimination reaction involving Br and H3C?
Which diene is expected to be most reactive in a Diels-Alder reaction?
Which diene is expected to be most reactive in a Diels-Alder reaction?
Which option correctly characterizes the structure of pyrophosphorus acid?
Which option correctly characterizes the structure of pyrophosphorus acid?
Which complex exhibits optical isomerism?
Which complex exhibits optical isomerism?
What happens when NaCl is treated with concentrated acid?
What happens when NaCl is treated with concentrated acid?
What is the probability that exactly 2 from the chosen items are defective, considering the options given?
What is the probability that exactly 2 from the chosen items are defective, considering the options given?
Which compound formation is an outcome of ozonolysis involving an alkene?
Which compound formation is an outcome of ozonolysis involving an alkene?
What is the eccentricity of the ellipse given by the equation $\frac{x^2}{16} + \frac{y^2}{9} = 1$?
What is the eccentricity of the ellipse given by the equation $\frac{x^2}{16} + \frac{y^2}{9} = 1$?
If the statement 'If the flower smells sweet then I will buy it' is false, what can be inferred?
If the statement 'If the flower smells sweet then I will buy it' is false, what can be inferred?
The reactivity of which compound is typically highest in nucleophilic substitution reactions?
The reactivity of which compound is typically highest in nucleophilic substitution reactions?
Which type of elimination reaction primarily produces alkenes?
Which type of elimination reaction primarily produces alkenes?
From the given frequency table for 20 throws of a die, what is the sample median?
From the given frequency table for 20 throws of a die, what is the sample median?
What is the equation of the normal to the curve $x^2y^3 = 4$ at the point (2, 1)?
What is the equation of the normal to the curve $x^2y^3 = 4$ at the point (2, 1)?
What would be the value of $7$ minus the product of $1$ and the frequency represented by the number 6 in the die throws?
What would be the value of $7$ minus the product of $1$ and the frequency represented by the number 6 in the die throws?
If all statements about a conditional statement are true, which interprets as being false?
If all statements about a conditional statement are true, which interprets as being false?
Which of the following represents an appropriate conclusion in the context of misleading graphs?
Which of the following represents an appropriate conclusion in the context of misleading graphs?
Study Notes
Biochemistry
- The protein thiogalactoside transacetylase is encoded by the gene LacZ
- The enzyme phosphoglycerokinase catalyzes the formation of 3-phosphoglyceric acid from 1,3-diphosphoglyceric acid, a process known as substrate level phosphorylation.
- During DNA replication, helicase separates the parental strands of DNA.
- In a Polymerase Chain Reaction (PCR), the function of helicase is achieved by the high temperature used during the process.
- Adenosine 3´,5´-cyclic nucleotide monophosphate (cAMP) acts as a second messenger for many regulatory molecules
- cAMP acts as an intracellular second messenger in neurons.
- cAMP activates specific cyclic nucleotide dependent protein kinases.
- Deficiency of vitamin A in humans leads to night blindness.
Genetics
- In cats, white skin is dominant over gray, black eye is dominant over gray, and curl tail is dominant over straight.
- A cat homozygous for white skin, gray eye, curl tail mating with another cat homozygous for white skin, black eye, straight tail will result in 100% F1 generation with white skin, black eye, curl tail phenotype.
Environmental Science
- CO2 and CH4 are the greenhouse gases with the highest contribution towards global warming.
Organic Chemistry
- The compound CH3CH2CO2H is soluble in aqueous NaOH but not in aqueous NaHCO3.
- Ozonolysis of an alkene followed by reaction with concentrated NaOH and aqueous acid produces two carbonyl compounds.
- E2 elimination reaction of 2-bromo-3-methylbutane produces 2-methyl-2-butene.
Physical Chemistry
- The most reactive diene towards the Diels-Alder reaction is cyclopentadiene.
- The structure of pyrophosphorus acid is (HO)2P(O)OP(O)(OH)2
- The complex cis-[Co(en)2Cl2]+ exhibits optical isomerism.
Physics
- The waves y1 = A sin (ωt + kx) and y2 = A cos (ωt + kx) have a phase difference of π/2.
- The time period of oscillation of a spring-mass system depends on the mass of the object attached. Heavier objects result in longer periods, so TCu>TG>TW
- In an elastic collision, the total kinetic energy of the system is conserved.
- Heat flow rate through different layers of a composite slab depends on the thermal conductivity and thickness of each layer.
- An H-atom in the 1st excited state returning to the ground state emits UV radiation.
- A body at 600 K emits infrared radiation.
- Fusion of two light nuclei emits γ rays.
- The magnitude of the induced emf in a conducting wire moving in a magnetic field is given by the equation |ε|=Blv, where B is the magnetic field strength, l is the length of the wire, and v is the velocity of the wire.
- The horizontal range of a projectile launched at an angle θ with initial velocity v is given by the equation R=(v^2sin2θ)/g, where g is the acceleration due to gravity.
- The magnetic field due to an infinite straight wire carrying current I at a distance r from the wire is given by the equation B=(μ0I)/(2πr).
- The mass of an object is independent of the gravitational field.
Mathematics
- The eccentricity of the ellipse x2/16+y2/9=1 is 7/4
- If the statement "If the flower smells sweet, then I will buy it," is false, it means the flower smells sweet and I did not buy it.
- The sample median is 3.5 for the given data.
- The equation of the normal to the curve x2y3 = 4 at the point (2, 1) is 5y = 3x - 1.
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Description
Test your knowledge on key concepts in biochemistry and genetics, including enzyme functions, DNA replication, and genetic dominance in cats. This quiz covers essential topics such as the role of cAMP and the inheritance patterns found in feline species.
