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matrenka [14]
3 years ago
6

In terms of generating a depolarizing or hyperpolarizing graded potential on a postsynaptic cell, what do you think will be the

most important factor?
Biology
1 answer:
mamaluj [8]3 years ago
6 0

Answer:

The type of ion channel opened will be the most important factor.

Explanation:

At certain occasions a given neurotransmitter can combine with a K+ chemically gated channel and at certain occasions the same neurotransmitter can combine with a Na+ chemically gated channel. Thus, the same neurotransmitter can produce depolarization if it opens the Na+ channel and a hyper-polarization if it opens the K+ channel.  

In these situations, the structural make-up and sensitivity of the postsynaptic cell really determines if the neurotransmitter will inhibit (depolarize) or excite (depolarize) the postsynaptic cell. It is more essential to know the kind of channel, which opens than the particular identity of the neurotransmitter.  

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Newtons third law is action/reaction, for every action there is an equal opposite force 
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3 years ago
What would happen to the concentrations of ATP, NADPH and Sugars if PSI stopped
rodikova [14]

Answer:

Concentrations of ATP, NADPH and sugars would decrease

Further Explanation:

  1. Light energy is absorbed and transferred to the reaction center.
  2. A water molecule is split.
  3. Electrons are transferred from photosystem II to photosystem I.
  4. ATP is synthesized from ADP and inorganic phosphate.

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent. This occurs in the thykaloids, where pigment molecules like chlorophyll reside.

The chloroplast is a membrane bound organelle found in plants. It contains several invaginations of a plasma membrane called the thylakoid membrane. This contains chlorophyll pigments, in stacks called granum, while the internal spaces of the organelle are called the lumen. Liquid surrounds the granum, forming the stroma.

During the light reaction:

  • Light is absorbed by pigments in phosystem II (PSII). This energy is transferred among pigments til it gets to the reaction center, and is transferred to P680; this promotes an electron to a higher energy level where it then goes to an acceptor molecule.
  • Water supplies the chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II. Additionally, water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent.
  • the electron moves down an electron transport chain (ETC) to PS I where it experiences continuous energy loss. This energy fuels the pumping of H+ from the stroma to thykaloid, leading to the formation of a gradient. The H+ move along their gradient and cross through ATP synthase, into the the stroma.
  • ATP synthase converts ADP and Pi to the energy storage molecule ATP.
  • The electron gets to photosystem I where it goes to pigments at P700. It absorbs light energy, the electron is promoted to a higher energy level, and passed to an electron acceptor. This leaves a space for another electron which is then replaced by one from photosystem II.
  • in the ETC, the molecule NADP is reduced to NADPH by providing H+ ions. NADP and NADPH are integral to the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.

If PSI is stopped, this disrupts the ETC and prevents regeneration of NADPH along with ATP production. ATP is an energy storage molecule reuired for the producton of several compounds. Additionally, NADP and NADPH are integral to the dark reactions, or Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.

Learn more about Photosynthesis at brainly.com/question/4216541

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

6 0
4 years ago
A scientific test is called an
JulijaS [17]
Experiment!

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6 0
3 years ago
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The graphic shows two isomers of a chemical compound with molecular formula C5H11NO2. Which type of isomers are these?
Agata [3.3K]
Structural Isomers is the answer 
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This weather map showed the temperature (in °F) in the United States on a winter
mestny [16]

Answer:

so the H is at where the red and yelow is and the L is at where the blue and green are.

Explanation:

hope this helps

7 0
3 years ago
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