It s on earth, but you can t breathe

Re-reading is a painful thing, if you repeat the mistakes in the process, then you don't even have the opportunity to upgrade to a bachelor's degree, you should want to ask yourself if you can learn, whether you will start again for your future, if you don't have enough information and ideas, don't take risks, because life is like playing chess, make a wrong move and lose everything. No one can help you with this, I can only tell you that the road ahead is still very long, choose the path that suits you, go on and don't look back, don't let the young years be lost, feelings are beautiful, but also very poisonous, how much you love, how much you lose, wait until you have a future and then talk about feelings, otherwise it will ruin your life!

Hehe, I was just like you three years ago.

At that time, I longed for university life, so I refused to revise.

It turned out that I made the right choice We had classmates who went to review, but they still didn't get into a good school.

I'm in a junior college now, but I'm in a bachelor's degree.

That is to say, I am taking the undergraduate exam, which is a self-exam, and there is a discount for college students to take this exam, and you can be exempted from taking two exams.

There are 14 in total, and only 12 are left.

My self-examination is remailing, so there are 7 repostal or national propositions, which is a little more difficult. The remaining 5 subjects are all taken in their own school, which is easy and enjoyable ......

This is just my personal suggestion, and it's up to you how to do it.

Good luck and fulfilling your undergraduate dreams.

If you repeat it, you don't want to go, it's useless to repeat. Why? Simple, you think that the pressure is too great, under this pressure you can't learn well, repeating will increase your mental burden, go to the junior college, the college will only waste time, now you have to consider choosing a good major in the junior college, computer, financial fast, machinery these do not need to choose.

If you really realize that you are wrong, that you need to wake up, and that you have enough perseverance, read it again.

Otherwise, go to a junior college.

Mentality is a big problem, otherwise when you get to college, you will be less stressful and more likely to waste.

A psychiatrist is more suitable for you.

Probably not.

But anaerobic bacteria.

I haven't found out if I need to breathe or not.

Wait a minute for oxygen bacteria.

It should be carried out.

Anaerobic respiration. Anaerobic respiration (anaerobic

respiration）

Some bacteria are inorganic.

Molecules as. Electron transport chain.

electrons. For the recipient, this process of gaining energy is called anaerobic respiration. Main.

The electron acceptors are nitrate (NO3-), sulfate (SO42-) and carbon dioxide (CO2), and some metal ions can also be reduced.

The process of using nitrate as the last electron acceptor in the electron transport chain and producing energy ATP is called dissimilatory

nitrate

reduction), nitrate is reduced by nitrate

reductase) to nitrite (NO2-) with the following reaction: NO3-+2E-+2H+ NO2-+H2O, however, the reduction of nitrate to nitrite is not efficient in producing ATP (nitrate only accepts 2 electrons), because a large amount of nitrate is necessary for growth and nitrite has a comparable ratio.

toxicity, so nitrate is often further reduced to nitrogen (N2), a process called denitrification, so nitrate accepts 5 electrons, and.

The product is non-toxic. In addition, the absolute anaerobic methanogens use carbon dioxide (CO2) or carbonate (CO32-) as the final electron acceptor. Desulfovibrio uses sulfate (SO42-) as an electron acceptor and accepts 8 electrons to reduce to S2- or H2S, and the reaction is as follows:

so42-+8e-+8h+®s2-+4h2o。Anaerobic respiration produces less ATP than aerobic respiration because of its smaller reduction potential difference, but this energy is obtained in a way that allows it.

Microorganisms in an oxygen-deficient environment rely on electron transport and.

Oxidative phosphorylation.

Synthetic ATP.

So you need to breathe.

Yes. There are organisms on earth that do not need to breathe, and that is viruses.

Every living thing needs to breathe, but breathing does not necessarily require oxygen, and breathing can be divided into two categories: aerobic respiration and anaerobic respiration.

Heterotrophic anaerobic single-celled bacteria [the type of organism that does not need to consume oxygen and cannot photosynthesize, like roundworms]. In the first oceans, there was no oxygen, and there was a lot of organic matter. We call it oxygen-deficient organic soup.

In these soups, small organic molecules coalesce into large organic molecules, and large organic molecules polymerize into something similar to a system of low-level biofilms [which will later evolve into cell membranes], and these membranes sometimes enclose to form a relatively stable environment, and these enclosed places become the earliest bacterial bodies.