#Question id: 12256
#Unit 10. Ecological Principles
Ant species X preys upon ant species Y. A researcher has the following set of observations regarding the behaviour of species X where aggression signifies a predatory response.
Which of the following statement(s) are correct regarding the behaviour of Species X?
(i) A glass bead is sufficient to elicit the predatory response.
(ii) Both chemical and non-chemical cues are involved in the predatory response.
(iii) Chemical cues are necessary to elicit the predatory response.
(iv) Chemical cues are sufficient to elicit the predatory response
#Question id: 3877
#Unit 3. Fundamental Processes
Differential RNA processing may result in:
#Question id: 4616
#Unit 11. Evolution and Behavior
Logically, which of these should cast the most doubt on the relationships depicted by an evolutionary tree?
#Question id: 10465
#Unit 6. System Physiology – Plant
This feature is an adaptive, as the redistribution of
chloroplasts within the cells modulates light absorption and prevents
photodamage, diagram shows of chloroplast distribution patterns in Arabidopsis
palisade cells in response to different light intensities;
m) A-low light, B-high light, C-darkness
n) A-high light, B-darkness, C-low light
Based on the above light intensities, each shows
different chloroplasts position such as,
i) chloroplasts avoid sunlight by migrating to the
side walls of palisade cells
ii) chloroplasts move to the bottom of the cell,
although the physiological function of this position is unclear
iii) chloroplasts optimize light absorption by
accumulating at the upper and lower sides of palisade cells
Which of the following correct combinations shows light intensities and chloroplast movements?
#Question id: 4660
#Unit 3. Fundamental Processes
Two-component system regulating response to low Gln,
a) Glutamine dissociates from the sensor domain in the NtrB protein, leading to activation of a histidine kinase transmitter domain in NtrB
b) glutamine binds to a sensor domain of NtrB, causing a conformational change in the protein that inhibits its histidine kinase activity, the regulatory domain of NtrC blocks its DNA-binding domain from binding the glnA enhancers.
c) Activated transmitter domain of NtrB that transfers the γ-phosphate of ATP to a histidine residue (H), this phosphohistidine then transfers the phosphate to an aspartic acid residue (D) in the NtrC protein
d) This causes a conformational change in NtrC that unmasks the NtrC DNA-binding domain so that it can bind to the glnA enhancers
Which of the following combination is correct?