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TLS Online TPP Program
#Question id: 12204
#Unit 6. System Physiology – Plant
Feedback regulation represents another key mechanism employed to attenuate a response such as
a) AUX/IAA proteins can bind to the promoters of their own genes and repress their own expression
b) auxin signaling triggers the degradation of AUX/IAA repressors, the ensuing transcription of auxin response genes leads to the replacement of AUX/IAA proteins and thus to response attenuation or termination
c) AUX/IAA genes, which encode the AUX/IAA auxin repressor proteins, have auxin response element binding sites located in their promoter regions
During the feedback regulation mechanism of auxin several responses are trigger, find out the correct sequences of these responses.
TLS Online TPP Program
#Question id: 12205
#Unit 7. System Physiology – Animal
Before the preovulatory surge in luteinizing hormone, granulosa cells of the follicle secrete which of the following?
TLS Online TPP Program
#Question id: 12206
#Unit 7. System Physiology – Animal
Neonates that are kept in 100% oxygen incubators for several days become blind when they are removed from the incubator, a condition referred to as retrolental fibroplasia. What is the explanation for the loss of sight?
TLS Online TPP Program
#Question id: 12207
#Unit 7. System Physiology – Animal
Which of the following hormones activate enzyme-linked receptors?
TLS Online TPP Program
#Question id: 12208
#Unit 7. System Physiology – Animal
Which of the following is produced by the trophoblast cells during the first 3 weeks of pregnancy?
TLS Online TPP Program
#Question id: 12209
#Unit 7. System Physiology – Animal
At birth, a large, well-nourished baby is found to have a plasma glucose concentration of 17 mg/Dl (normal is 80 to 100 mg/dL) and a plasma insulin concentration twice the normal value. What is the explanation for these findings?