What factors contributes most to the sustainability of a habitat

Contrast the electron transport chain in photosynthesis with the one in cellular respiration by identifying sources of the high-

nlexa [21]

Respiration:

The respiratory chain detailed here is that of mammalian mitochondria:

NADH → NADH dehydrogenase → ubiquinone (coenzyme Q10) → coenzyme Q-cytochrome c reductase → cytochrome c → cytochrome c oxidase → O2;

succinate → succinate dehydrogenase → ubiquinone (coenzyme Q10) → coenzyme Q-cytochrome c reductase → cytochrome c → cytochrome c oxidase → O2.

It consists of the following elements:

The high transfer potential electrons of NADH are transmitted to coenzyme Q10 (ubiquinone) by NADH dehydrogenase, or complex I. Reduced coenzyme Q10 is ubiquinol Q10H2.

The electrons with a high succinate transfer potential are transferred to coenzyme Q10 by succinate dehydrogenase, or coenzyme II, also giving ubiquinol Q10H2.

Ubiquinol Q10H2 transfers its electrons to two cytochromes c under the action of coenzyme Q-cytochrome c reductase, or complex III.

Four cytochromes c each transfer their electron to an oxygen molecule under the action of cytochrome c oxidase, or complex IV. Two molecules of water are formed.

Each of these four respiratory complexes has an extremely complex structure partially included in the internal mitochondrial membrane. Apart from the complex II, they are proton pumps. The electrons circulate between these structures on liposoluble or hydrophilic electron transporters depending on the case.

Photosynthesis:

Photophosphorylation is the equivalent, for photosynthesis, of oxidative phosphorylation for cellular respiration. It constitutes the "light phase" of photosynthesis, that is, it groups together light-dependent reactions.

In plants, photophosphorylation occurs in the membrane of thylakoids, within chloroplasts:

H2O → photosystem II (P680) → plastoquinone → cytochrome b6f complex → plastocyanine → photosystem I (P700) → ferredoxin → ferredoxin-NADP + reductase → NADP +;

cyclic photophosphorylation: (ferredoxin →) plastoquinone → cytochrome b6f complex → plastocyanine → photosystem I (P700) → ferredoxin (→ plastoquinone).

Contrast:

What he has in common is:

*The sequence of several complex membrane proteins transporting electrons.

*The conversion of DNA into ATP.

The differences are in the transport proteins themselves, as well as the direction of H + flux (to the cytoplasm for photosynthesis, and to the mitochondrial matrix in respiration).

8 0

2 years ago

What are potential impacts on society and the environment of using a genetic approach to improving food productivity? Do you thi

Lilit [14]

Answer:

- Society: the use of genetic improving techniques may have a positive impact through crop improvement of traits of agronomic importance such as, for example, resistance to biotic and abiotic stresses.

- Environment: the development of genetically modified crops conferring resistance to pesticides may have a negative effect on wildlife species (both plants and animals) and humans living in such agroecosystems.

Explanation:

In crops, genetic improvement technologies can be defined as the techniques associated with the development of better crop varieties, i.e., varieties that have higher grain yield, produce more biofuel, higher fiber content, etc. Genetic improvement techniques include, among others, selective breeding and genetically modified organisms. In crops, genetic improvement techniques have the potential to reduce hunger in the world. However, it is important to note that genetic engineering may be associated with the horizontal transference of genes and the development of genetically modified organisms (GMO), which may have harmful effects on wildlife species and humans, thereby GMO crops must be carefully assessed before their release into the field.

5 0

2 years ago

How is nitrogen returned to the atmosphere during the nitrogen cycle? a. it is returned to the atmosphere in a process called ni

AlladinOne [14]

Nitrogen is returned to the atmosphere during the nitrogen cycle in a process referred to as denitrification.

<h3>What is denitrification?</h3>

It is a process whereby nitrogen becomes mineralized from nitrogenous compounds. In other words, it is the reduction of nitrates to produce elemental nitrogen which is returned to the atmosphere.

Denitrification is a microorganisms-driven process. The nitrates are made to pass through a series of reactions with intermediate products before finally leading to the production of elemental nitrogen.

More on the denitrification process can be found here: brainly.com/question/13624886

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5 0

1 year ago

Stove:kitchen: as _____ :plant cell.

Kisachek [45]

Answer: Cloroplast

Hope this helps :))

3 0

2 years ago

Read 2 more answers

Which test should be performed for patient with suspected stroke within 25 minutes of arrival?

anzhelika [568]

The answer is a neurologic assessment by the stroke team should be performed within 25 minutes of arrival. Neurologic assessment is the examination of sensory neuron and motor responses, especially reflexes, to know whether the nervous system is compromised. The following actions are undertaken:

- Review the patient's history, including past medical history.

- Perform a physical exam.

- Begin last known well if not already done.

- Execute a neurological exam to assess patient's status using the NIHSS or the Canadian Neurological Scale.

- The CT scan should be accomplished within 25 minutes from the patient's arrival in the Emergency Depatment and should be read within 45 minutes.

4 0

2 years ago