Practice Questions

TLS Online TPP Program

#Question id: 29055

Which of the following statements is correct about biogeochemical cycling?

#Unit 10. Ecological Principles

The phosphorus cycle involves the recycling of atmospheric phosphorus
The phosphorus cycle is a cycle that involves the weathering of rocks
The carbon cycle is a localized cycle that primarily involves the burning of fossil fuels
The carbon cycle has maintained a constant atmospheric concentration of CO2 for the past million years

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TLS Online TPP Program

#Question id: 23285

#Unit 8. Inheritance Biology

Chromosome are classified into four basic term,

Chromosome

A) Metacentric chromosome

i) centromeres present at the end of the chromosome

B) Submetacentric chromosome

ii) chromomere near the end of the chromosomes

C) Acrocentric chromosome

iii) Centromere in the middle of the chromosome and divides the chromosome into two equal arms.

D) Telocentric chromosome

iv) The centromere is present near the middle and divides the chromosome into two unequal arms

TLS Online TPP Program

#Question id: 23286

#Unit 8. Inheritance Biology

Individual chromosomes may lose or gain parts and the order of genes within a chromosome may become altered. These variations in the number and structure of chromosomes are termed as

TLS Online TPP Program

#Question id: 23287

#Unit 8. Inheritance Biology

Chromosome mutations can be grouped into three basic categories:

I) Chromosome rearrangements

III) Polyploidy

these mutation alters the number and structure of chromosomes such as,

a) One or more individual chromosomes are added or deleted

b) The loss of a chromosomal segment

c) A piece of a chromosome might be duplicated, deleted, or inverted

d) One or more complete sets of chromosomes are added

e) In which one or more copies of a DNA segment is produced

Find out the correct pairing of chromosomal mutations,

TLS Online TPP Program

#Question id: 23288

#Unit 8. Inheritance Biology

The staining of chromosomes with a special dye called Giemsa reveals G bands, which distinguish

TLS Online TPP Program

#Question id: 23289

#Unit 8. Inheritance Biology

Preparation and staining techniques help to distinguish among chromosomes of similar size and shape, this staining techniques also distinguish the banding pattern of the chromosome at which stage of cell cycle?

TLS Online TPP Program

#Question id: 23560

#Unit 13. Methods in Biology

DNA molecules which are constructed with DNA from different sources are called