TLS OnlineTLS Online TPP Program
QUESTION ID:1
The following statements describe the developmental processes during different modes of reproduction in angiosperms:
A. In double fertilization, one sperm fuses with the egg and other with the central cell to form the zygote and endosperm, respectively.
B. In sporophytic apomixis, a diploid cell gives rise to the next generation thereby maintaining the maternal genotype.
c. In gametophytic apomixis, a reduced egg cell forms apomictic embryo through parthenogenesis.
D. In pseudogamy, the functional endosperm is formed without fertilization
QUESTION ID:2
Researcher plans to study protein trafficking into the endoplasmic reticulum (ER). For this purpose, they plan different experimental conditions shown below:
A. The cytosol is mixed with mRNA that codes for a secreted protein, followed by wesiern blotting with antibodies against secreted protein.
B. The cytosol is mixed with mRNA that codes for a secreted protein and rough microsomes, followed by western blotting with antibodies against secreted protein.
C. The cytosol is mixed with mRNA that codes for a secreted protein and rough microsomes followed by protease treatment. Subsequently, western blotting with antibodies against secreted protein is done
Consider that mRNA that codes for a secreted protein is added in abundant amount, which experimental control/s would be the best to confirm the polypeptide entry into the ER?
QUESTION ID:3
A mutant strain of E.coli having defects in one of the DNA repair pathways was identified. To identify the pathways where mutation occurred, aresearcher looks at the following parameters and identified the defect to be
in base excision repair pathway
A. Topoisomerase 11 enzyme activity
B. AP endonuclease activity
c. Expression ot mutL and muts
D. DNA glycosylase activity
E. DNA ligase activity
Based on the changes in which of the above parameters, this conclusion can be drawn?
QUESTION ID:4
The graph given below is based on the optimal foraging theory. If the Y axis represents "Cumulative Resource Intake" following tihe law of diminishing
returns, what do T and T' stand for?
QUESTION ID:5
The graph below depicts the net change in forest cover in four regions (AD) between 1990 and 2020, according to the FAO report - 'The State of World's Forests 2020'.
Which one of the following options correctly identifies these regions?
QUESTION ID:6
The Cre-LoxP system was used to knock-out the p53 gene from the mice lungs. An immunoblot analysis was carried out as shown below
The following assumptions were made
A. The LoxP system did not work since the recombinase was not functional.
B. The Lox P sites were introduced under a promoter specific for lungs.
C. The tissue-specified promoter selected was of the prostate gland.
D. The mice died because of being knocked out of p53.
E. The knocked-out mice developed mutagen-induced tumours in their prostate gland more rapidly than in their lungs
Which one of the following is correct combination of above assumption?