Explanation

Answer:

A

In the former, it is violent and rapid creation with release of much heat energy while in the latter it is a generally slow reaction with release of less heat energy

Explanation

Immunoglobulin G (IgG) is the most abundant antibody in the human body.

It plays a crucial role in long-term immunity by recognizing and neutralizing pathogens.

IgG antibodies are produced after exposure to an antigen, such as a vaccine.

They persist in the bloodstream for an extended period, allowing the body to respond to subsequent infections with the same pathogen quickly.

IgG can also cross the placenta, providing passive immunity to newborns. 

Explanation

 Gram-positive bacteria stain purple or blue with the Gram stain.

This is due to their thick peptidoglycan cell wall, which retains the primary stain (crystal violet) even after decolorization. 

Explanation

The invertebrate that has a water vascular system is an echinoderm

Specifically starfish, sea urchins, sea cucumbers, brittle stars, and feather stars.

This unique system is a defining characteristic of the phylum Echinodermata. 

Explanation

Systematics deals with the identification and ranking of all plants.

It includes classification and nomenclature (naming) and enables the botanist to comprehend the broad range of plant diversity and evolution.

Explanation

During an infection, neutrophils (a type of white blood cell) are one of the first responders to the site of infection.

They engulf and destroy pathogens like bacteria through a process called phagocytosis.

Explanation

Homogeneous liquid equilibria can be affected by temperature changes,

It as the temperature can influence the equilibrium position.

Pressure changes may also affect equilibria but to a lesser extent than temperature changes.

Explanation

Sound travels 4.3 times faster in water than in air.

In water, the particles are much closer together and they can quickly transmit vibration energy and the sound wave travels over four times faster than it would in air.

Explanation

Important GK

Olericulture deals with the production, storage, processing and marketing of vegetables.

Agrostology: Study of Grasses 

Agronomy: soil management and crop production 

Odontology: study of teeth 

Arthrology:Study of joints 

Nephrology: study of kidneys

Hematology: Study of blood  

Dermatology:  Study of skin 

Explanation

We are given:

• A 30 cm long string
• One end is clamped (fixed), and the other is free to move transversely
• It is vibrating in its second harmonic

We are to find the wavelength of the constituent traveling waves

The allowed standing wave lengths are: L=(n−1/2​) λ​/2 ,for n=1,2,3,…

So:

• 1st harmonic (n = 1):

  L=λ​/4⇒ λ=4L=120cm

• 2nd harmonic (n = 2):

  L= 3λ/4​ ⇒ λ=4L/3​ =4×30/3 =40cm