Substance transport modes include, how many types of substance transport are there? What are the characteristics of each?

When it comes to substance transporters including, as we all know, some people ask how many kinds of substance transporters are there? What are the characteristics of each? In addition, there are people who want to ask what are the main types of material transport in the cell membrane? What are the main characteristics of each mode of transport? Do you know what this is all about? In fact, a brief description of what are the ways of cell membrane substance transport, the following is a look at how many kinds of substance transport? What are the characteristics of each? I hope to be able to help you!

Substance transport modes include

1, substance transport modes include:How many kinds of substance transport? What are the characteristics of each?

Small molecule's include two kinds

Active transport: requires energy and the participation of carriers. From a low concentration gradient to a high concentration gradient

Minerals, etc.

Passive transport: there are including two kinds, both from high concentration to low concentration.

1, free diffusion: no carrier, no energy required. Water and fat-soluble substances are

2, assisted diffusion: does not require energy, requires a carrier.

(This is more specific is glucose such as red blood cells is assisted diffusion, but into the villous cells of the small intestine is active transport)

macromolecules include

cytotoxicity: that is, the cell needs to eat their own things, need energy

cytotoxicity: need energy

4 kinds, respectively: simple diffusion (aka free diffusion), easy diffusion (aka free diffusion), easy diffusion (aka free diffusion), easy diffusion (aka free diffusion), easy diffusion: need energy, need energy. ), facile diffusion (aka assisted diffusion), active translocation (or active transport), and membrane vesicular transport (out of and into the cell)

Simple diffusion (aka free diffusion)

Briefly describe what are some of the ways in which substances are translocated across the cell membrane

Characteristics: ① high concentration → low concentration

② no energy is used

Facile diffusion (aka assisted diffusion)

Characteristics: ① high concentration → low concentration

② no energy expenditure

③ selective

④ permeability can be altered

Active transporter (or active transport)

Characteristics: ① high concentration → low concentration, transported against the concentration gradient (against the chemical gradient);

② requires energy (directly supplied by ATP) or is coupled with the energy release process coupling (co-transport), and to metabolism;

③ both have carrier proteins, dependent on membrane transport proteins;

④ selective and specific.

Membrane vesicular transport (outgoing and incoming)

Characteristics: ① Directional transport

② Requires energy

③ Dependent on a variety of proteins and coupling mechanisms

④ Can transport macromolecules

2, the mode of transport of substances include:What are the main modes of transport of substances in the cell membrane? What are the main characteristics of each mode of transport?

(a) simple diffusion (Figure) Definition of fat-soluble small molecules from high concentration to low concentration across the membrane to move the process of diffusion flux: Mmol/s.cm2 Influencing factors: inside and outside of the membrane concentration difference of substances, the voltage difference, the permeability of the membrane transported substances: O2, CO2 characteristics: ① high concentration → low concentration ② not energy-consuming [edit this paragraph] (b) easy diffusion 1. Definition of non-fat-soluble small molecules, which are not in the membrane, and which are transported by special membrane proteins. With the help of special membrane proteins, from the high concentration to the low concentration side of the transfer process.2. Characteristics ① high concentration → low concentration ② does not need to consume energy ③ selective ④ permeability can be changed.3. channel-mediated ease of diffusion? Ion channels ① substances transported: ions: Na +, K +, etc. ② characteristics: a. channel protein function state can be changed (Figure) activation (), inactivation (off), standby (resting) b. through the "gate" regulation c. selective ③ transport results: electrochemical potential balance classification: chemical gated channel: N-Ach Receptors, voltage-gated channels: Na + channel, mechanically gated channels 4. carrier-mediated ease of diffusion (Figure) transported substances: GS, AA into the general cell **** the same characteristics: ① structural specificity, ② saturation phenomenon, ③ competitive inhibition [Edit this paragraph] (C) active transport 1. Definition: refers to the cell membrane will be the process of transporting the substance molecules (or ions) against the concentration difference and potential difference 2. biological pumps: Substance is ATPase, such as "sodium-potassium pump", "proton pump", etc. Sodium pump: sodium-potassium pump or Na+-K+-ATPase (Figure) Activation: intracellular [Na+], extracellular [K+] Role: 3 Na+ moved to the outside of the membrane, 2 K + moved into the cell physiological role: the formation of high extracellular Na +, high intracellular K + a. Ionic potential energy storage is the basis of bioelectricity; to promote the transmembrane transport of certain substances against the concentration difference. Such as GSb. Intracellular high K + is necessary for certain biochemical reactions c. Prevent cellular edema 3. Classification of primary active transport secondary active transport: (Fig.) isotropic transport, reverse transport various transmembrane transport mechanism characteristics [Edit Paragraph] (D) out of the cell and into the cell macromolecules into and out of the cell in the following ways: 1. out of the cell: a variety of activities, neurotransmitter release 2. into the cell: receptor-mediated into the cell (Fig.)

The above is with the material transport there are several kinds? What are the characteristics of each? Related content, is about the substance transport there are several kinds? What are the characteristics of each? of sharing. After reading about the ways of substance transshipment included, I hope this is helpful!