Explanation

Explanation

The lipid molecules give fluidity and elasticity to the membrane and membrane protein gives semi-permeability to the membrane

The plasma membrane is also selectively or differentially permeable.

It allows free transport of solvent, i.e., water across it but will not allow free transport of solute particles.

Explanation

The correct equation for the position of the bright fringes in Young's double-slit experiment is:

𝑦 =𝑚𝜆𝐷/𝑑

Where

y is the position of the bright fringe on the screen.

m is the order of the bright fringe (0, 1, 2, ...).

λ is the wavelength of light.

D is the distance between the slits and the screen.

d is the distance between the two slits.

Explanation

The semi-digested food in a cockroach is temporarily stored in the crop.

The crop is an organ found in the digestive system of many insects, including cockroaches.

The crop allows insects to store food temporarily, which can be advantageous for survival in various environmental conditions.

Explanation

If the male is colorblind but the mother is normal then there is a 50% chance to reproduce the colorblind disease progeny and 50% other.

Colorblindness is an X-linked chromosome (criss-cross inheritance)

The man has XY chromosomes (1 X chromosome)

and female having XX chromosome (2 X chromosome). 

Explanation

A homogeneous society refers to a social setting where the majority of its members share common cultural, ethnic, religious, and linguistic backgrounds.

 A homogeneous society shares a common language, ethnicity and culture.

Explanation

Sociology is the study of social life, social change, and the social causes and consequences of human behavior.

The term sociology was first coined in 1780 by the French essayist Emmanuel-Joseph Sieyes.

Explanation

• Exobiology is the study of likely nature or possibility of life in space or other planets.
  
• It is a branch of biology which deals with the study of life in outer space.
• It is also known as “Astrobiology”.
• It actually deals with the origin, evolution, distribution, and future of life in the universe.

Explanation

The Solvay process is an industrial process that uses limestone (CaCO3 )

to produce carbon dioxide (CO2 )

which reacts with ammonia (NH3 )

dissolved in brine (concentrated NaCl(aq)) to produce sodium carbonate.

ND-7-5-2023

Explanation

Why lightning comes faster than thunder? 5 marks

Lightning is faster than thunder.

• Lightning and thunder happen at the same time.

• But you see lightning before you hear thunder

• because light, which travels a million times faster than sound, arrives almost instantly.

• Sound, on the other hand, takes about five seconds to travel one mile.

• light at a speed of around 300,000,000 meters per second travels much faster than sound which moves at 340 meters per second.