Practice Questions

TLS Online TPP Program

#Question id: 12490

Tay-Sachs disease shows autosomal recessive inheritance. Parents of a newly diagnosed affected child are referred for genetic counselling. It would be correct to tell them that:

#Part-A Aptitude & General Biotechnology

the probability that their next child will be affected is 1 in 2.
the probability that the older unaffected sister of the affected child is a carrier is 1 in 2.
the fact that their last child was affected means that their next three children will not be affected.
the probability that each parent is a carrier is 1.

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TLS Online TPP Program

#Question id: 12722

#Part-B Specialized Branches in Biotechnology

Eleven amino-acid consensus sequence motif TAQAAKEKAXE is repeated in the protein, is the structural characteristics of which type of group of LEA protein?

TLS Online TPP Program

#Question id: 12723

#Part-B Specialized Branches in Biotechnology

GroEL, GroES is an example of the prokaryotic cell, this HSP protein is belong to the which of the following HSP class?

TLS Online TPP Program

#Question id: 12724

#Part-B Specialized Branches in Biotechnology

In response to sudden, 5 to 10°C rises in temperature, plants produce a unique set of proteins referred to as heat shock proteins (HSPs). There are five classes of heat shock proteins found in plants such as;

HSP class

Examples (Arabidopsis / prokaryotic)

Cellular location

I) HSP100

a) AtTCP-1 / GroEL, GroES

i) Cytosol

II) HSP90

b) Various AtHSP22, AtHSP20, AtHSP18.2, AtHSP17.6 / IBPA/B

ii) mitochondria

III) HSP70

c) AtHSP101 / ClpB, ClpA/C

iii) chloroplasts

IV) HSP60

d) AtHSP70 / DnaK

iv) endoplasmic reticulum

V) smHSP

e) AtHSP90 / HtpG

Match the following HSPs with their correct location and the examples of the HSPs;

TLS Online TPP Program

#Question id: 12727

#Part-A Aptitude & General Biotechnology

Name the form of DNA which may be produced with a DNA sequence made up from alternating purine and pyrimidine nucleotides.

TLS Online TPP Program

#Question id: 12755

#Part-B Specialized Branches in Biotechnology

Which of the following statements best describes why biologists are currently concerned with global warming and the thawing of permafrost in many areas of the tundra biome?

TLS Online TPP Program

#Question id: 12756

#Part-B Specialized Branches in Biotechnology

Flycatcher birds that migrate from Africa to Europe feed their nestlings mostly with moth caterpillars. The data presented show the mean dates of egg laying, hatching, and fledging of flycatcher young, and the 1980 and 2000 peak mass of caterpillars.

The most likely cause for the shift in caterpillar peak mass is