1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
guapka [62]
3 years ago
15

In an experiment, the membrane potential of a neuron is hyperpolarized to –120 mV. When an inhibitory neurotransmitter is applie

d to the preparation, the membrane is depolarized. Which of the following could explain this result?
a. Inhibitory transmitters normally depolarize the synaptic membrane.
b. The normal response of the postsynaptic membrane to any transmitter is depolarization.
c. The inhibitory transmitter activates ligand-gated potassium channels.
d. Sodium channels become inactivated.
e. Calcium channels become activated.
Biology
1 answer:
denis-greek [22]3 years ago
3 0

Answer:

The inhibitory transmitter activates ligand-gated potassium channels

Explanation:

When a cell is in hyperpolarized state,the potassium gated channels are taken longer time to close up, Therefore, more K+ leaks out of the axoplasm  to the exterior.Therefore the cell appears to continue in the resting state, with more negative value of the cell potential of (-120 mV) and this called hyperpolarization.

However, with the addition of  inhibitory transmitter,the ligand-gated potassium channels are activated,Theses channels closes up.Then sodium  gated channels, which  were initially in refractive state reopens, sodium ions diffuses inwards for depolarization, and the neuron returns to depolarized state.

You might be interested in
A person making tea has the option of using sugar
Anon25 [30]

Or sweetner??...lol Hope this helped, Have a good day!

5 0
3 years ago
What is the concentration of a suspension that grew 89 colonies on a plate with a dilution of 1:100?
mafiozo [28]

Answer:

8900 CFU/mL

Explanation:

Colony Forming Units (CFU) is a value that indicates the degree of microbiological contamination of an environment. It expresses the relative number of microorganisms of a given taxon in a volume of one cubic meter of water.

UFC is the minimum number of separable cells on the surface, or inside, of a semi-solid agar medium that results in the development of a visible colony of the order of tens of millions of descending cells. The CFUs can be pairs, chains or clusters, as well as individual cells. Colony forming unit.

Calculation

Colonies * Dilution = CFU/mL

89          *  (100/ 1 mL) = CFU/mL

8900 CFU/mL

3 0
3 years ago
Multiple Choice Questions.
Tpy6a [65]
Petiole, hopefully this helps you
4 0
3 years ago
PLEASE HELP FAST!!
Temka [501]

Answer:

C

Explanation:

5 0
3 years ago
When pollen moves from the stamen of a flower on one plant to the pistil of the flower of a different plant this is called what?
Ainat [17]

Answer:

Its pollination

Explanation: The process by which pollen is delivered to the ovule of a gymnosperm or the stigma of an angiosperm. And a pollinator is an organism or other agents such as wind or water that transfers pollen from one plant to another; most commonly applied to organisms. hope this helps!

8 0
3 years ago
Other questions:
  • 1. Scientists believe that ancient ancestors of all animals were (1 point) A) single-celled prokaryotes that reproduced asexuall
    15·2 answers
  • Explain why it is important to create experiments that are reproducable by other people.
    10·2 answers
  • Why is virus considered as connecting link between living and non living?
    15·1 answer
  • How can exposure to violence affect children?
    9·1 answer
  • During which step of mitosis do the chromatids line up in the middle of the cell? A. prophase B. telophase C. anaphase D. metaph
    6·1 answer
  • Why is the sky blue?
    5·2 answers
  • DNA regions that are transcriptionally silenced by hypercondensation have often undergone a modification of their _______ residu
    12·1 answer
  • 100 POINTS
    5·1 answer
  • What family does a mushroom belong to and what species is a mushroom. Please answer ASAP
    15·1 answer
  • . If a substance changes form one phase to another, is it still the same substance?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!