NTPC CBT-2 Biology Quiz

Question 1:

Which one of the following is the first enzyme to mix with food in the digestive tract?

Trypsin

Cellulose

Pepsin

Amylase

The earliest experiments on inheritance were developed by------.

Gregor Mendel

Jonas Salk

Charles Sternak

Robert Oppenheimer

Biological Oxygen Demand (BOD) is a standard criterion for :

Measuring oxygen levels in animals.

Computing oxygen levels in forest ecosystems

Pollution assay in aquatic systems

Measuring oxygen levels in the blood

What is true about the isolated small tribal populations?

Hereditary diseases like color blindness do not spread in the isolated population.

Wrestlers who develop strong body muscles in their lifetime pass this character onto their progeny.

There is no change in population size as they have a large gene pool.

There is a decline in population as boys marry girls only from their own tribe.

In eukaryotes, DNA is present in which of the following?

Nucleus

Mitochondria

Chlorophyll

Endoplasmic reticulum