Practice Questions

TLS Online TPP Program

#Question id: 24518

Some nonnative parasites are introduced deliberately for the biological control of pests, which of the following are necessary attributes of a good agent of biological control?
a. low rate of increase relative to the host’s
b. Good dispersal ability
c. High searching capacity for hosts
d. Minimal time lag effects
e. Maximal time lag effect
f. General adaptability to the environment

#Unit 10. Ecological Principles

b, c and e
a, c, d and f
b, c, d and f
a, e and f

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TLS Online TPP Program

#Question id: 11482

#Unit 7. System Physiology – Animal

The umami receptor in the sense of taste detects ________.

TLS Online TPP Program

#Question id: 11840

#Unit 6. System Physiology – Plant

During an ethylene signalling pathway, what will have done inside cytosol and nucleus . Given below some prediction about presence and absence of ethylene in column B match with column A

COLUMN A	COLUMN B
I- In the presence of ethylene	a) ETR1 signaling is repressed and CTR1 is inactive
II- In the absence of ethylene	b) ETR1 activate CTR1, a Ser/Thr kinase
	c) CTR1 phosphorylates the C-terminal domain of EIN2
	d) The nonphosphorylated C terminus of EIN2 is cleaved by a protease
	e) Phosphorylation of EIN2 inhibits proteolytic cleavage
	f) EIN3 transcription factors are ubiquitinated and degraded in the nucleus by the 26S proteasome
	g) EIN3 initiates a transcriptional cascade by activating expression of ethylene-responsive genes, including ERF1 transcription factor, leading to ethylene responses