Question

Question 1

0 / 1 pts

A cell resting membrane potential (RMP) is closest to the equilibrium potential of ____

  an ion with the highest number of channels

  an ion with the lowest permeability

  an ion with the highest permeability

Question 3

0 / 1 pts

After AchE breaks down Ach, Choline will be transported to the presynaptic neuron in a process of ____

  counter-transportation with Ca

  co-transportation with Na

  counter-transportation with Na

  co-transportation with Ca

Question 4

0 / 1 pts

After-Hyperpolarization refers to a time that ___

  repolarization is complete

  the resting membrane potential is less than -70

  the resting membrane potential starts moving toward positive

  depolarization is complete

Question 5

0 / 1 pts

Autonomic Nervous system is a system that controls smooth muscle and ____

  heart

  gland, heart and skeletal muscle

  skeletal muscle

  gland and heart

  glands

Incorrect

Question 6

0 / 1 pts

One difference between a graded potential and an action potential is that ____

  all of them are correct

  an action potential is stronger than a graded potential

  an action potential follows the rule of “all or none” but a graded potential does not

  an action potential happens in both cell body and axon but a graded potential only happens in a dendrite

Incorrect

Question 7

0 / 1 pts

Channels at the dendrites are ______ channels.

  chemically gated

  all are correct

  mechanically gated

  voltage gated

Question 10

1 / 1 pts

During repolarization ___

  K channels are open

  inactivation gate is open

  Na is the main ion which drives reploarization

  activation gate is open

Question 11

1 / 1 pts

Electrochemical gradient refers to difference in ____

  oncentration and charges

  concentration

  charges and ions

  ions

  charges

Incorrect

Question 12

0 / 1 pts

GABA can either be metabolized or removed from its receptor. For that reason we can use ___ or ___ respectively.

  GABA transporter, GABA tranasminas

  GABA transaminase, GABA transporter

  Glutamate decarboxylase, Glutamate transporter

  Glutamate transporter, Glutamate decarboxylase

Incorrect

Question 13

0 / 1 pts

Glycine function is similar to ___

  GABA B

  GABA A

Question 17

0 / 1 pts

Presynaptic and postsynaptic membrane ____

  have cleft but are also connected to each other by some molecules like CAMs

  are physically attached to each other

  are separated by a cleft but still are connected to each other by some molecules like connexons.

  . are separated by a cleft and there is no adhesion between them

Answer 1

1.Answer- Ion with the highest permeability.

A cell resting membrane potential allows higher number of the potassium ions.The normal resting membrane potential of cell is -70 to -80 Kv is the closet to the equilibrium potential of potassium ion which is -90kv.Thus, option A and B is incorrect.

2.co-transportation with Na

Acetylcholinesterase (AchE) is the hydrolytic enzymes present at the synaptic cleft.It hydrolyzes Ach into choline and acetate.The cholinergic nerve terminals have the high affinity and Na+- choline transporter (co-transportation) helps in the choline transport to the presynaptic neurons.

3.the resting membrane potential is less than -70

Hyperpolarization phase of action potential causes the membrane potential to become more negative and the cell membrane potential falls down below to the resting membrane potential.It occurs due to the opened potassium leak and voltage gated channels .

4.gland and heart

Autonomic Nervous system maintains the involuntary controls smooth muscle and cardiac muscles and gland .The somatic nervous system regulates the voluntary control the skeletal muscle contraction. Option - gland and heart is the correct answer.