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
Sidana [21]
3 years ago
9

I NEED HELP ASAP!!!

Biology
1 answer:
CaHeK987 [17]3 years ago
8 0
They first question is B and the 2nd question is letter A
You might be interested in
g protein-activated inwardly rectifying potassium channels mediate depotentiation of long-term potentiation
Svetlanka [38]

Long-term potentiation (LTP) is considered a cellular correlate of learning and memory. The presence of G protein-activated inwardly rectifying K(+) (GIRK) channels near excitatory synapses on dendritic spines suggests their possible involvement in synaptic plasticity. However, whether activity-dependent regulation of  channels affects excitatory synaptic plasticity is unknown. In a companion article we have reported activity-dependent regulation of GIRK channel density in cultured hippocampal neurons that requires activity oF receptors (NMDAR) and protein phosphatase-1 (PP1) and takes place within 15 min. In this study, we performed whole-cell recordings of cultured hippocampal neurons and found that NMDAR activation increases basal GIRK current and GIRK channel activation mediated by adenosine A(1) receptors, but not GABA(B) receptors. Given the similar involvement of NMDARs, adenosine  receptors, and PP1 in depotentiation of LTP caused by low-frequency stimulation that immediately follows LTP-inducing high-frequency stimulation, we wondered whether NMDAR-induced increase in GIRK channel surface density and current may contribute to the molecular mechanisms underlying this specific depotentiation. Remarkably, GIRK2 null mutation or GIRK channel blockade abolishes depotentiation of LTP, demonstrating that GIRK channels are critical for depotentiation, one form of excitatory synaptic plasticity.

Learn more about receptors here:

brainly.com/question/11985070

#SPJ4

8 0
2 years ago
Diffusing molecules move ________ until they are ________. Through channels of active transport proteins; evenly distributed up
koban [17]

Answer;

-Down the concentration gradients; evenly distributed

Diffusing molecules move down the concentration gradients until they are evenly distributed.

Explanation;

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.

-Whenever a substance exists in greater concentration on one side of a semipermeable membrane, such as cell membranes, any substance that can move down its concentration gradient across the membrane will do so. If the substances can move across the cell membrane without the cell expending energy, the movement of molecules is called passive transport.

-The mechanism of molecules moving across a cell membrane from the side where they are more concentrated to the side where they are less concentrated is a form of passive transport called simple diffusion.

4 0
3 years ago
Read 2 more answers
Which statement accurately describes the role of key organelles in energy transfer
Mila [183]

Answer:

<h2>Energy is captured and stored in the chloroplast and released in the mitochondria.</h2>

Explanation:

6 0
3 years ago
Which factor correlated with human populations losing skin pigmentation? (1 point)
DochEvi [55]

Explanation:

moving away from shaded environment

8 0
2 years ago
Read 2 more answers
a reessive allele on the x chromosome is responsible for red-green color blindness in humans. a woman with normal vision whose f
Ray Of Light [21]

Answer:

50%

Explanation:

Let the allele for red-green color blindness be represented by c.

Normal vision woman whose father is color-blind will be X^CX^c

Color-blind male will be X^cY

X^CX^c   x   X^cY

Progeny: X^CX^c, X^CY, X^cX^c, X^cY (See the attached image)

<em>Out of the 2 male progeny, 1 is affected for color-blindness while the other is not affected. This gives a 50% probability that a son of the couple will be color-blind.</em>

4 0
3 years ago
Other questions:
  • Why is allowing complete chest recoil important when performing high quality CPR?
    6·1 answer
  • Which of the following is not an example of homeostasis?
    5·2 answers
  • This is the general condition of a body or organism.
    11·2 answers
  • PLZZZZZZZZZZZZZZZZZZ HELP ASAP WILL GIVE BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    10·1 answer
  • Which of the following is NOT a rule when writing a hypothesis?
    10·1 answer
  • So-called "dark matter" cannot be directly observed because
    7·2 answers
  • What type of plate boundary occurs where two plates move away from one<br> another?
    15·2 answers
  • ¿Qué beneficios traen las construcciones de los paneles solares a los animales?
    9·1 answer
  • What are the substances?
    15·2 answers
  • typical, well aerated culture will have a density of about 109 or 1010 cfu/mL after an overnight incubation. If you are working
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!