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
77julia77 [94]
3 years ago
15

Which statement about long-term potentiation (LTP) is false? A. During normal, low-level activity, the release of glutamate at t

he synapse activates only the AMPA receptors. B. NMDA receptors cannot ordinarily respond to glutamate because magnesium ions block the NMDA receptor's calcium ion channel. C. Strong stimulation of AMPA receptors depolarizes the postsynaptic membrane so much that the Mg2+ plug is driven from the central channels of the NMDA receptors. D. NMDA receptors are fully active only when 'gated' by a strong depolarization (via AMPA receptors) and the ligand calcium.
Biology
1 answer:
Sophie [7]3 years ago
6 0

The correct answer is: D. NMDA receptors are fully active only when 'gated' by a strong depolarization (via AMPA receptors) and the ligand calcium.

NMDA receptors or N-methyl-D-aspartate receptors are ionotropic glutamate receptors.

Those receptors are inactive at the resting potential, because channel pore is blocked by magnesium ions, preventing ion flows through it. After the depolarization (AMPA receptor mediated) of the post-synaptic cell, the channel inhibition is released and thus NMDA receptor is activated. Also, the receptor is activated when glycine and glutamate bind to it.

When it is activated, the receptor channel allows the flow of cations K+, Na+ and Ca2+. The influx of Ca2+, which is secondary messenger, triggers intracellular signaling pathways.


You might be interested in
Scientists want to determine how closely related chimpanzees are to humans. Which data would give the MOST accurate comparison?
ipn [44]

The correct answer is option B) their DNA sequences.

The best comparison for finding out the evolutionary relationship between two organism is the comparison of their DNA (deoxyribonucleic acid) sequence. The organisms, which are more closely related to one another share more similarity in the DNA sequence as compared to the distantly related organism, so, the comparison of the DNA can help in determining the evolutionary relationship between the organism.

5 0
3 years ago
Read 2 more answers
In pea plants purple flowers are dominant to white flowers.
algol13

Answer:

100%

Explanation:

This question involves a single gene coding for flower color in pea plants. The allele for purple flowers (P) are dominant to white flowers (p). This means that purple color will be expressed in a heterozygous state.

According to this question, If two white flowered plants are cross i.e. pp × pp, the following gametes will be produced by each of the parent: p and p. Using these gametes in a punnet square (see attached image), ALL (100%) of the offsprings will be white colored (pp).

Therefore, 100% of the offsprings will be white flowered.

6 0
3 years ago
Elephants are not the most common species in African grasslands. The grasslands contain scattered woody plants, but they are kep
Agata [3.3K]

Answer:

The Elephant can be defined as a KEYSTONE SPECIE

Explanation:

A KEYSTONE SPECIE is an animal specie that maintains an ecosystem relative to their population. These species' activities, play a crucial role in maintaining the ecosystem. In this case, the elephant's activity of uprooting trees, helps in keeping the ecosystem in check, and support its current inhabitants.

3 0
3 years ago
Amber is a solid material
pickupchik [31]
Maybe it’s not a mineral because it’s just hardened tree resin whereas minerals can be mined and found deep in the earth…?
3 0
2 years ago
I will give brainliest
seraphim [82]

Answer:

plant cells have chloroplasts and a cell wall. (they also have one large central vacuole.)

Explanation: Chloroplasts are found only in plant cells. Chloroplasts convert energy from the sun into sugar (glucose). The chloroplast is also where photosythesis happens in the plant cell. The cell wall is also only found in a plant cell. The cell wall protects and mantains the shape of the cell. And you don't have to put this one but the central vacuole is just one big vacuole in a plant cell that stores mainly water and nutrients since plant cells require more water to function, whereas in animal cells they have multiple small vacuoles.

8 0
2 years ago
Other questions:
  • When fructose and glucose are bonded together, they form?
    6·1 answer
  • What is homozygous ?
    15·2 answers
  • It is better to grow plants in soil than in sand because soil
    6·2 answers
  • 1)Describe two ways that receptor-mediated endocytosis is different from phaocytosis.
    6·1 answer
  • Which variables make a volcano such as Popocatépetl more “dangerous” than others?
    5·2 answers
  • Mark you brainelest if you get this question right. At a convergent boundary between continental and oceanic crust, what feature
    15·1 answer
  • The motion of objects can be quite complex. The motion of this frog is an example, Suppose that the frog moves from one lily pad
    11·2 answers
  • Helppppp will mark brainliest!!!!!
    12·2 answers
  • Where does frontal inversion occur in the atmosphere and how does it affect us and the environment? Wanther High
    9·1 answer
  • chromosome 7 may lose an end piece resulting in williams syndrome. this is an example of a chromosomal
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!