SRMJEE Mock Test - 10 (Medical) - JEE MCQ

From Stokes' law:
F_d​ = 6πηRv 
= [ML^-1T^-1]

P₀ = 0.9 x 4000 = 3600 W = 6 x V₀ cos
P = I²Z ⇒ Z = = 3600/36 = 100 Ω
Note: Power factor is not given. So, the calculation, by taking power factor 1, is applicable for resistive load only.

According to Ohm's law:
V = IR
R =

Dimensional formula of the potential difference is = [M¹L²T^-3A^-1]
Dimensional formula of = = [M¹L³T^-3A^-2]
Or we can say that dimensional formula of conductivity σ = is [M^-1L^-3T³A²]

R₁ = k [A][B]

R₂ = k [A][2B]

∴ R₂ / R₁=2

Iodoform test is given by only those compounds containing CH₃CO – or CH₃CHOH – group.
PhCHOHCH₃ + 4I₂ + 6NaOH ⟶ CHI₃ + PhCOONa + 5NaI + 5H₂O

Glucose and galactose with the formula C₆H₁₂O₆ [CHO(*CHOH)₄CH₂OH] have four chiral carbons. 
Glyceraldehyde with formula C₃H₆O₃ [CHO(*CHOH)CH₂OH] has one chiral carbon.
Glycine is the only α-amino acid which is optically inactive, because it does not contain chiral carbon atom. Glycine is neutral amino acid, and it is non-essential amino acid.
Glycine: 
H₂N − CH₂ − COOH

In water hyacinth, the flowers emerge over the surface of water and are pollinated by birds, insects or wind.

The treatment of snake bite by anit-venom is an example of artificial acquired passive immunity. Anti-venom neutralize the effect of venom in the body.

Vas deferens transports sperm from the epididymis to the ejaculatory ducts in anticipation of ejaculation. Thus, if vas deferens is blocked, the semen will be without sperm.

According to Darwin's theory of evolution, nature selects the fittest. Fitness is based on characteristics which are inherited. Therefore, there must be a genetic basis for getting selected and to evolve. Some organisms are better adapted to survive in an otherwise hostile environment. Adaptative ability is inherited. Fitness is the end result of the ability to adapt and get selected by nature. Therefore, branching descent (inheritance) and natural selection are the two key concepts of Darwin's theory of evolution.

Decomposition is the process that involves the breakdown of complex organic matter or biomass from the body of dead plants and animals with the help of decomposers into inorganic raw materials such as carbon dioxide, water, and other nutrients.

The various processes involved in decomposition are as follows:
➢ Fragmentation 

• It is the first step in the process of decomposition.
• It involves the breakdown of detritus into smaller pieces by the action of detritivores such as earthworms.

➢ Leaching

• It is a process where the water soluble nutrients go down into the soil layers and get locked as unavailable salts.

➢ Catabolism

• It is a process in which bacteria and fungi degrade detritus through various enzymes into smaller pieces.

➢ Humification

• The next step is humification which leads to the formation of a dark-coloured colloidal substance called humus, which acts as reservoir of nutrients for plants.

➢ Mineralization

• The humus is further degraded by the action of microbes, which finally leads to the release of inorganic nutrients into the soil.
• This process of releasing inorganic nutrients from the humus is known as mineralization.

The myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon. The gaps between the two adjacent myelin sheaths are called Nodes of Ranvier.

• A cloning vector with two antibiotic resistance genes (for tetracycline and ampicillin) allows differentiation between recombinant and non-recombinant cells.
• Foreign DNA insertion disrupts the tetracycline resistance gene, so recombinants lose resistance to tetracycline but retain resistance to ampicillin.
• Non-recombinants (without foreign DNA insertion) retain both tetracycline and ampicillin resistance, allowing them to survive on a medium containing both antibiotics.

Two cry genes, crylAc and cryllAb have been incorporated in cotton. The genetically modified crop is called Bt cotton as it contains Bt toxin genes. The genes crylAc and cryllAb control cotton bollworms.

This is the correct option. Ligases catalyse bonding of two chemicals with the help of energy obtained from ATP resulting in formation of bonds like C-O, C-S, C-N and P-O.

Plasmodesmata are the channels that connect plant cell walls and enable molecular exchange between the cells. They are analogous to gap junctions in animal cells. There are two forms of plasmodesmata; primary ones are formed during cell division and secondary ones can form between mature cells. Plasmodesmata provide a simple route for the movement of ions and macromolecules. Larger molecules use actin filaments to traverse the cells. The middle lamella is a pectin layer which cements the cell walls of two adjoining cells together.

A normal electrogram (ECG) is composed of a ‘P’ wave, a QRS wave (complex), and a T wave. The ‘P’ wave is a small upward wave that represents electrical excitation or atrial depolarization which leads to contraction of both the atria. QRS wave (complex) begins after a fraction of a second of the P wave. It begins as a small downward deflection (Q) and continues as a larger upright (R) and triangular wave, ending as a downward wave (S) at its base. It represents ventricular depolarization. The ‘T’ wave is dome-shaped which represents ventricular repolarization. The potential generated by the recovery of the ventricle from the depolarization state is called the repolarization wave. The end of the ‘T’ wave marks the end of the systole.

Auxins, gibberellins, and cytokinins can indeed act synergistically in promoting plant growth. These hormones work together to regulate various aspects of growth and development, such as cell division, elongation, and differentiation. This synergy allows plants to adapt their growth in response to environmental conditions.

An interesting fact is that while these hormones can promote growth, they can also interact with other hormones like abscisic acid and ethylene, which can inhibit growth under certain conditions, demonstrating the complex regulation of plant development.

Solution: Meristematic tissue consists of immature cells that are in a constant state of division, contributing to the growth of plants. This tissue is found in specialized regions such as the tips of roots and shoots, where growth is most active. Unlike other tissues that might specialize in support, transport, or photosynthesis, the primary role of meristematic tissue is to facilitate growth through cell division

Let y = (x − a)(x − c) / (x − b) = (x² − (a + c)x + ac) / (x − b)

Rearranging, we get:
y(x − b) = x² − (a + c)x + ac

Expanding further:
x² − (a + c + y)x + ac + by = 0 ----(1)

Since x is real, the discriminant of equation (1) must be non-negative:

(a + c + y)² − 4(ac + by) ≥ 0

Expanding:
y² + 2(a + c)y + (a + c)² − 4ac − 4by ≥ 0

Rearranging:
y² + 2(a + c − 2b)y + (a − c)² ≥ 0 ----(2)

Since y takes all real values, inequality (2) must hold for all y. This is possible only if:

4(a + c − 2b)² − 4(a − c)² < 0 (since the coefficient of y² is positive)

Factorizing:
(a + c − 2b + a − c)(a + c − 2b − a + c) < 0

Simplifying:
(2a − 2b)(2c − 2b) < 0

Dividing by 4:
(a − b)(c − b) < 0

Thus, b lies between a and c. One possible ordering is a < b < c.

The line 'Multinational corporations could take the top micro-finance institutions to the next level...' suggests the answer.
Nothing about the management about the micro-finance institutions or the involvement of banks has been mentioned, so options 1 and 2 are negated. The line 'The poorest of the world's poor, who are predominantly in Asia and Africa get left out" negates option 3 also.

The context suggests that the pressure to turn a profit also forces micro-financiers to change their business models in ways that deviate from or vary from the industry's core mission. Thus, the last option is most similar in meaning to the word 'depart'.

The context of the passage suggests that the success of Mibanco has aroused/stimulated the interest of commercial banks, which had previously shunned the country's poor. Thus, option 2 is the correct answer.

The context of the passage suggests that micro-finance industry is on the threshold/brink of a revolution. Thus, the last option is similar in meaning to the word 'verge' and hence the answer.