Explanation

 Haptoglobin levels are typically decreased because it binds to free hemoglobin released from damaged red blood cells, leading to its depletion in the blood. 

The function of haptoglobin:

Haptoglobin is a protein produced by the liver that primarily functions to bind free hemoglobin in the bloodstream, preventing its toxic effects. 

Explanation

Gamma-ray cameras can observe radiations from the radioisotopes that are concentrated in the organs.

In medical imaging, radioisotopes are often used in nuclear medicine to diagnose and treat various conditions.

These isotopes emit gamma rays as they decay, and the gamma-ray camera detects these rays to create images of the organs where the isotopes have accumulated.

Explanation

For non-Ohmic materials, the current-voltage (I-V) relationship does not follow Ohm's law, which states that current is directly proportional to voltage (resulting in a linear I-V graph).

In non-Ohmic materials, the relationship between current and voltage is non-linear, and the I-V graph is typically curved.

Examples of non-Ohmic materials include diodes and transistors, where the resistance changes with voltage or current.

Explanation

A competitive inhibitor binds to the active site of an enzyme, preventing the substrate from binding.

This type of inhibition is typically reversible, as the inhibitor competes with the substrate for the same binding site.

The inhibition can be overcome by increasing the concentration of the substrate.

Competitive inhibitors do not accelerate the reaction and are generally not irreversible.

Explanation

Diamond is sp3 hybridized

linked to four other carbon atoms by using hybridised orbitals in tetrahedral fashion.

It is crystalline in nature

It has a bond angle of 109.5^0.

Explanation

The substitution of a hydrogen atom (−H) by a nitro group (−NO2) on a benzene ring is called nitration.

Nitration is typically carried out using concentrated nitric acid (HNO3) and sulfuric acid (H2SO4).

The sulfuric acid acts as a catalyst and generates the nitronium ion (NO2+), the electrophile that reacts with the benzene ring.

The overall reaction can be represented as:

C6H6 + HNO 3 → C 6H5NO2 +H2O

Here, benzene (C6H6) is converted to nitrobenzene (C6H5NO2).

This is a key reaction in organic chemistry, especially in the synthesis of various aromatic compounds.

Explanation

The centripetal force necessary to keep the racing car in its circular path is indeed provided by friction between the tires of the car and the track.

Concept:

When the car is moving in a circular path, it experiences an inward acceleration towards the center of the circle.

This acceleration is called the centripetal acceleration.

According to Newton's second law of motion, the net force acting on an object is equal to the mass of the object multiplied by its acceleration.

In this case, the net force is the centripetal force, and the centripetal acceleration can be calculated using the formula:

a_c = v^2 / r

Where:

- a_c is the centripetal acceleration

- v is the speed of the car

- r is the radius of the circular track

Substituting the given values into the formula:

a_c = (50.0 m/s)^2 / 250 m

Simplifying the equation:

a_c = 2500 m^2/s^2 / 250 m

a_c = 10 m/s^2

The centripetal force required to keep the car in its circular path is equal to the product of the car's mass and the centripetal acceleration.

Using the given mass of the car:

F = (2.00 x 10^3 kg) * (10 m/s^2)

Simplifying the equation:

F = 2.00 x 10^4 N

Therefore, the centripetal force necessary to keep the car in its circular path is provided by friction and its value is 2.00 x 10^4 Newtons.

Explanation

Biochemistry is both life science and a chemical science -

it explores the chemistry of living organisms

the molecular basis for the changes occurring in living cells.

Explanation

The Beaufort scale is used to measure and detail the consequences of different wind speeds on objects on land or at sea.

The Beaufort numbers in the Beaufort scale are arranged from 0 to 12 to represent the wind strength from calm (force 0) to the hurricane ( force 12).

ND17-7-2023

Explanation

• The body of amphibians is divided into Head, Neck, and Trunk
• ***
• Amphibians are the first true tetrapods or vertebrates with four limbs.
• Amphibians breathe with gills as larvae and with lungs as adults.
• They have a three-chambered heart and a relatively complex nervous system.