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Answer: Homocysteine

The power house of the cell is Mitochondria.

Cholesterol is transported from liver to extrahepatic tissues by LDL.

Answer: In the matrix of mitochondria.

Answer:  Glutamine.

(a) I ‐Cl bond is weaker than I‐I and Cl – Cl bond. 

(b) Bi has +5 oxidation state in NaBiO₃. +3 O.S of Bi is more stable than +5 due to inert pair effect 

(c) Noble gases are monoatomic and their atoms are held together by weak dispersion forces.

(a) Peptide linkage: 

It is an amide linkage formed between ‐COOH group and ‐NH₂ group of alpha aminoacids in proteins. 

(b) Primary structure: 

The specific sequence in which various amino acids are linked to one another in a Protein molecule is called its primary structure. 

(c) Denaturation: 

A process in which secondary and tertiary structures of proteins are destroyed but Primary structure remains the same is called denaturation of protiens. It is caused by change in temp, change in pH etc.

On the basis of severity of droughts, India can be divided into three drought prone areas.

a. The Extreme drought prone areas: This is the most important drought prone areas of the country which has been recording continuous drought for many years. The regions are western parts of Rajasthan, Kutch regions of Gujarat and semi-arid regions of Western and North western parts of India.

b. The Severe drought prone areas: This is the second important drought prone areas of the county. The eastern parts of Rajasthan, western parts of Madhya Pradesh, Parts of Maharashtra, interior parts of Andhra Pradesh. North and northeastern parts of Karnataka and Tamil nadu.

c. The Moderate drought prone areas: This region is mainly found in regions of U.P, parts of Gujarat, Maharashtra, Jharkhand, Tamil Nadu and interior parts of Karnataka.

(i) Palaeonotology. 

(ii) It was collected from Yamanapalli of Adilabad district.

The correct answer is Fossils.

• Palaeontology is the study of the history of life on Earth as based on fossils.
• Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock. 
• Palaeontology is the scientific study of the life of the geologic past that involves the analysis of plant and animal fossils, including those of microscopic size, preserved in rocks.

• Osteology is the study of Bones.
• Primatology is the scientific study of primates.
• The study of Birds is known as Ornithology.
• The study of plants is known as Botany.

Migration can enhance the process of natural selection by bringing in the alleles and traits within a population that are selected by nature. Hence, providing advantage to a particular group. 
Migration can blur the effect of natural selection by removing the useful traits or genes from the population.

Migration can enhance the process of natural selection by bringing in the alleles and traits within a population that are selected by nature. Hence, providing advantage to a particular group.
Migration can blur the effect of natural selection by removing the useful traits or genes from the population.

In the population of Peppermoth, 2 variants were already existing in the population, the black and the grey. In the absence of Industrialisation, the grey moths were prevalent because they blended very well with the lichen and moss covered trees camouflage and the predators cannot spot them. The Black ones were easily spotted and killed by predators and therefore, were fewer in numbers. With Industrialisation, the stems got covered with black soot. This provided better camouflage to the black variant and their number increased. If the industries had been removed the population of black moths would have declined because as stated earlier they would have been spotted better by predators and therefore be eaten more frequently.

(A) It can be formed from allantoin

(A) Oxidation to allantoin

An atmosphere is the layers of gases surrounding a planet or other celestial body. Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.

Electric potential energy is the energy that is needed to move a charge against an electric field. You need more energy to move a charge further in the electric field, but also more energy to move it through a stronger electric field.

(4) Units but no dimensions

Plane angle and solid angle are dimensionless but have units.

Correct option is (4) decreases

P = P₀ + 4T/R

⇒ R increases and P decreases

Block Diagram Reduction Problems : 

• Step 1: Reduce the blocks connected in series 

• Step 2: Reduce the blocks connected in parallel 

• Step 3: Reduce the minor feedback loops 

• Step 4: Try to shift take off points towards right and Summing point towards left 

• Step 5: Repeat steps 1 to 4 till simple form is obtained 

• Step 6: Obtain the Transfer Function of Overall System

Solution:  P = I² R = 5² × 8 = 200 W

W = Pt = 200 × 30 = 6000 J

Advantages of Block Diagram Representation 

• Very simple to construct block diagram for a complicated system 

• Function of individual element can be visualized 

• Individual & Overall performance can be studied 

• Over all transfer function can be calculated easily

Disadvantages of Block Diagram Representation

• No information about the physical construction

• Source of energy is not shown

For most practical applications, it is necessary that current flow continues for as long as it is required; this will not unless the following conditions are fulfilled:

1. There must be a complete path around which the electrons may move. If the electrons cannot return to the point of starting, then eventually they will all congregate together and the flow will cease.

2. There must be a driving influence to cause the continuous flow. This influence is provided by source which causes the current to leave at a high potential and to move round the circuit until it returns to the source at a low potential.

The driving influence is termed as the electromotive force, hereafter called the e.m.f

The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.

The ampere is defined as that current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 meter apart in a vacuum, would produce between these conductor a force of 2 × 10^-7 Newton per meter of length.

 An ampere is a unit of measure of the rate of electron flow or current in an electrical conductor.

Block diagram reduction technique

Because of their simplicity and versatility, block diagrams are often used by control engineers to describe all types of systems. A block diagram can be used simply to represent the composition and interconnection of a system. Also, it can be used, together with transfer functions, to represent the cause‐ and‐effect relationships throughout the system. Transfer Function is defined as the relationship between an input signal and an output signal to a device

The focal length of a concave mirror is of its radius of curvature Half.

The correct option is:

(C) 15 cm 

Myopia (short sightedness) eye-defect arises due to decreasing of focal length of eye lens.

Laws of transverse vibrations in stretched strings: 

There are three laws of transverse vibrations of stretched strings which are given as follows:

(I) The law of length: 

For a given wire with tension T (which is fixed) and mass per unit length p (fixed) the frequency varies inversely with the vibrating length. 

Therefore, 

f ∝ \(\frac{1}{l}\) ⇒ f = \(\frac{C}{2}\)

⇒1 × f = C, where C is constant

(II) The law of tension: 

For a given vibrating length I (fixed) and mass per unit length p (fixed) the frequency varies directly with the square root of the tension T,

f ∝ \(\sqrt T\)

⇒f = A\(\sqrt T\), Where A is constant

(III) The law of mass: 

For a given vibrating length l (fixed) and tension T (fixed) the frequency varies inverely with the square root of the mass per unit length µ,

f = \(\frac{1}{\sqrt μ}\)

⇒f = \(\frac{B}{\sqrt μ}\), Where B is constant

During short circuit an electric current in the circuit becomes very high.

IR² does not represent electric power in an electric circuit.

‘LASER’ stands for light Amplication by stimulated emission of radiation.

‘MASER’ stands for microwave Amplication by stimulated emission of radiation.

Current density—Current density of a conductor is defined as the amount of current passing per unit area of the conductor held to the flow of chares :

It can be expressed as— 

J = I/A

It is a vector quantity.

The S.I. unit of current density is ampere/ metre² (Am^–2)

The dimension of current density is [M^ºL^–2T^ºA]

Two properties of nuclear forces are as follows : 

(1) It is mainly an attractive force.

(2) It is strong fundamental force in nature.