What is the significance of active transportation in the first year of high school biology compulsor

1. Both photosynthesis and respiration produce ATP

2 will release energy, which is a direct energy supply in the cell.

3. First of all, glucose becomes two molecules of pyruvate in the cytoplasmic matrix, and a small amount of ATP is synthesized, and if it is followed by aerobic respiration, pyruvate enters the mitochondria for the second and third stages of aerobic respiration, and releases a large amount of ATP

4 Active transport requires energy, which is powered by the reaction of ATP---ADP and water.

5 How to say, some energy is provided by aerobic respiration, and some is provided by anaerobic.

6. Active transport is directly related to ATP, and most of ATP is derived from the oxidative decomposition of sugars.

1 ADP and PI plus energy to synthesize ATP, 21 moles of water liberates kilojoules of energy, a lot.

3. With glucose as the substrate, aerobic and anaerobic respiration are the oxidative decomposition of glucose, which can produce ATP, the former 1 molar glucose oxidative decomposition 38, the latter two.

4. Active transportation consumes ATPA and generates ADP

5. Aerobic respiration provides the energy needed for active transport.

6 answers are above.

1. ATP is produced through respiration and photosynthesis (only in plants) 2. High-energy phosphate bonds that release energy.

3. The essence of aerobic respiration is the oxidative decomposition of organic matter, and anaerobic respiration will also be produced.

4. Active transportation requires energy, that is, ATP, and ADP is one of the raw materials for the synthesis of ATP.

5. Aerobic respiration can produce ATP, and ATP can be used for active transportation.

6. The oxidative decomposition of sugars is aerobic respiration, as above.

Active transport involves the input and output of substances to cells and organelles and is capable of inverting concentration gradients or electrochemical gradients. Active intra-transport refers to the process of transporting substances into or out of the cell membrane under the action of energy with the assistance of the carrier.

Actively transported carrier proteins have the ability to transport the carrier from a region of low concentration to a region of high concentration. They have a specific receptor domain that binds to the vehicle, and this domain has a strong affinity for the vehicle.

After the carrier is bound, the carrier protein immobilizes the carrier with it, and then changes its spatial structure so that the domain that binds the carrier opens to the other side of the biofilm, and the bound carrier is released.

Active transport: energy consumption, from low to high concentrations, requires carriers;

Passive transport: no energy consumption, from high to low concentrations.

passive transport, which is divided into free diffusion and assisted diffusion; Free diffusion does not require carriers, but carriers are needed to assist diffusion.

Because both free diffusion and assisted diffusion do not consume energy, it is called passive transport.

It has nothing to do with water molecules, does it?

For example, if the cell fluid concentration is 8 and the external solution concentration is 7, but in fact the cell fluid has more water than the external solution.

It has nothing to do with the number of molecules, but with the concentration of the amount of water in the substance. There is only one general idea, and that is that the water will tend to equilibrium, even if it cannot be reached. In other words, water flows from places with high concentrations of water molecules to places with low concentrations of water molecules.

From the solute point of view, it is from the place where the solute concentration is low to the place where the concentration is high. The core is still a sentence, that is, to tend to balance].

Is it movement from the outside to the inside of the cell?

In this way, it is from the inside out

It's just about concentration, isn't it?

Yes] It doesn't matter how much water you have?

It has nothing to do with the quantity, it has to do with the concentration. The direction of movement of water molecules is the direction of high solute concentration].

Yes, this is actually caused by pressure, this pressure is called osmotic pressure, and the formula or something can be checked by yourself

It's just about the concentration. Because the osmotic pressure is different depending on the concentration, the osmotic pressure is high when the concentration is high, and in order to maintain the osmotic pressure balance, the water will infiltrate to the place where the osmotic pressure is high. I have a simple method of memorization that I hope will help you: water flows higher (in high concentration).

The osmotic phenomenon is related to the concentration of the solution on both sides of the permeable membrane. Water molecules move from high concentration (low water potential) to low concentration (high water potential) at the same time, and on the other hand, they also move from low concentration (high water potential) to high concentration (low water potential), but the water molecules move more from low concentration to high concentration in the same time, so it is manifested as the high concentration solution is diluted and the low concentration solution becomes thicker.

The following is an explanation of the water potential (the content of physical chemistry, if you don't understand, you can ask your biology teacher): under isothermal isobaric, the difference in chemical potential per partial molar volume of water between water in a system (such as a cell) and pure water. It is represented by the symbol (pronounced psi) or w.

The movement of water requires energy to do work, so the movement and balance of water is a problem that belongs to "learning", which has long been described by the concept of misuse of force (such as water absorption). After the 60s, in plant physiology, the concept of water potential was widely used for the problem of water entering and leaving cells, and the concept of water potential was derived from the basic laws of thermodynamics, which was derived from free energy and chemical potential. Water potential is the strength factor that drives the movement of water.

It can be colloquially understood as the trend of water movement. Water always flows spontaneously from high to low until the two are equal. The water potential of any aqueous system is affected by various factors that can change the free energy of water (such as solute, pressure, etc.), so that the water potential of the system increases or decreases.

For example, a soluble in water can reduce the free energy of the system, reducing the water potential. The water potential of pure water is specified to be zero under standard conditions (at one atmospheric pressure, at the same temperature as the system).

By pure water, we mean pure free water that is not bound to other substances in any way (physical or chemical). It has the highest free energy content, so pure water has the highest water potential. When there is any substance dissolved in pure water, the water potential of any solution is lower than that of pure water due to the interaction of the solute (molecule or ion) with the water molecules, which consumes part of the free energy.

The more solutes in the solution, the lower the water potential of the solution.

Personally, I believe that cellular respiration here refers to the normal metabolic activities of cells, and if the metabolism of cells is inhibited, it cannot decompose ATP to provide energy for material transport. The question stem gives the normal breathing conditions for group A, which is to suggest that the experimental conditions are used to control cellular respiration, then group B is the abnormal breathing conditions, that is, inhibition or promotion, and then according to the title, it should be the breathing conditions of group B that are inhibited.

Hello lz.

Active transport specifically refers to:Small molecule substances, with the help of carrier proteins, consume ATP (energy) and move in and out of the cell in the reverse concentration gradientacts.

There are a total of 4 elements, all of which are indispensable for active transport: macromolecules will not be actively transported; With the help of protein but not the consumption of ATP, it is assisted diffusion, and only knowing that it consumes ATP is not necessarily active transport (endocytocytosis also consumes ATP).

You need a carrier, you need energy, it's in the biology books.

1.The substances that are actively transported are: ions, amino acids, nucleotides, and glucose (except for glucose that enters red blood cells to assist diffusion, and enters other cells to actively transport).

2.Influencing factors: oxygen concentration, temperature.

3.Starch is a macromolecule because it is formed by the dehydration and condensation of n glucose, and the specific n can be a lot.

In fact, you don't need to carry it too much, you just need to remember that the ions that are free to diffuse and assist in diffusion, and the others are actively transported in.

In addition, remember the essence of knowledge, that is, the judgment conditions of the three modes of transportation, and sometimes the judgment conditions are used to judge, rather than directly backing up.

Of course, it is also active transportation. Active transport has nothing to do with concentration difference, only with carrier proteins and ATP.

In the figure, it can be found that when the intracellular X concentration is greater than the extracellular X concentration, it can also be absorbed, so it is active transport, which is the judgment method.

As can be seen from Figure C, when the concentration of extracellular X solution is constant, the concentration of intracellular X solution gradually increases with the increase of time, and finally exceeds the extracellular concentration, indicating that the X solution can be transported against the concentration gradient in the mode of active transport, which requires carriers and energy. The rate at which cells actively absorb X is determined by the number of carrier proteins and the amount of energy provided.

With the increase of the concentration of the substance, the transport rate increases, indicating that the concentration gradient is the driving force of its transport, and it is not affected by the carrier, so it is free diffusion.

With the increase of the concentration of the substance, the transport rate increases, indicating that the concentration gradient is the driving force of its transport, but it is affected by the carrier (parallel to the transverse axis), so it assists in diffusion.

The transport is independent of the oxygen concentration, proving that it is not active transport and can only be considered passive transport (free diffusion or assisted diffusion);

is related to the oxygen concentration (but there is still a transport rate at zero oxygen concentration, which proves that the energy here is provided by anaerobic respiration) and is considered to be active transport (the influencing factor parallel to the transverse axis is the carrier protein).

Passive transport Assisted diffusion Free proliferation Active transport.

1 is to assist in diffusion, and 2 is active transportation.