Lectures 16-20 MCQ

Question 1

Synaptic scaling has been observed at synapses which release which neurotransmitter/s?

Answer 1

Glutamate

Question 2

Neuronal homeostasis mediates which neuronal processes?

Answer 2

Stability of neural circuit function

Question 3

The morphogen sonic hedehog (SHH) is released by which structures/cells?

Answer 3

Floor plate

Question 4

Which region of the mammalian brain contains the master circadian pacemaker?

Answer 4

Suprachiasmatic nucleus (SCN) of the hypothalamus

Question 5

Genomic imprinting refers to which mechanisms of epigenetic alteration?

Answer 5

DNA methylation

Question 6

Hubel and Weisel received a Nobel prize for what?

Answer 6

Showing that neuronal activity was required for refinement of synaptic connectivity

Question 7

Ocular dominance columns are present in which part of the mammalian visual system?

Answer 7

Visual cortex

Question 8

Research by Eric Knudsen showed what?

Answer 8

There is a critical period in the development of visual and auditory alignment

Question 9

Which transcription factor(s) forms part of the known combinatorial code of motorneuron specification in Drosophila?

Answer 9

Islet

Question 10

Neuronal activity is required in which aspects of mammalian visual system development?

Answer 10

Ocular dominance columns

Question 11

What has been shown to be a common mechanism of epigenetic regulation?

Answer 11

Histone methylation

Question 12

Which axis regulates the ‘fight or flight’ responses to stress?

Answer 12

Sympatho-adrenomedullary

Question 13

Neuronal homeostatic mechanisms affect what?

Answer 13

Action potential firing frequency
Dendritic structure
Amplitude of synaptic currents

Question 14

The set-point is postulated to be related to the intracellular concentration of which ion?

Answer 14

Ca++

Question 15

Which traits do offspring show due to postnatal alterations in maternal care?

Answer 15

Increased corticosterone levels