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chubhunter [2.5K]
3 years ago
10

Which of the following are part of the chemiosmotic coupling model? Protons are pumped out of the mitochondrial matrix into the

intermembrane space. The active transport of protons is driven by the free energy derived from electron transport. Increasing the concentration of protons in the intermembrane space creates an electrical potential and a pH imbalance that releases energy upon proton flow back into the matrix. The energy released by the return of protons to the matrix is what drives ATP synthesis.
Biology
1 answer:
Lina20 [59]3 years ago
4 0

The correct answer is: Protons are pumped out of the mitochondrial matrix into the intermembrane space

Chemiosmosis can be described as movement of ions across a selectively permeable membrane, down their electrochemical gradient. It occurs during the cellular respiration within mitochondria and it is involved in ATP synthesis (oxidative phosphorylation via ATP synthase).

Electrons from electron carriers (NADH and FADH) donate electrons to the electron transport chain and that causes changes in protein complexes of electron transport chain. As a consequence, protein complexes pump H+ across a selectively permeable cell membrane from the mitochondrial matrix into the intermembrane space of mitochondria.  

H+ can only get back and pass through the inner mitochondrial membrane with the help of ATP synthase (down their electrochemical gradient). ATP synthase turned by the force of the H+ diffusing through it forms ATP by adding a phosphate to ADP.

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gogolik [260]

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Homologous structures are those that have structural similarities but are different in function. For example, if we look at the anatomical structure of a bird’s wing, it is very similar in structure with a human arm. However, over the course of time they have evolved to perform different functions.

• Vestigial structures: The inner ear bones of mammals have evolved from bones that form the jaws of reptiles.  

Vestigiality refers to the process in which some structure lose their function over the course of evolution in some specie but they are functionally normal in other species.  Such a structure is the inner ear bones of mammals which donot perform an important function in mammals but do perform in reptiles.

• DNA sequence data: Both Genes involved in RNA replication are conserved among bacteria and animals, suggesting a common evolutionary origin.

The sequencing of genetic data is an excellent method of finding the evolutionary histories and relatedness of different organisms. This field of sciences is called phylogenetics and the mentioned example is the result of phylogenetics.

• Analogous structures: The jointed legs of insects and vertebrates arose independently, indicating a different evolutionary origin.  

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7 0
3 years ago
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Zielflug [23.3K]
Several species or warblers can live in the same spruce tree only because they occupy different nitches within the tree. Hope this helps! 
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What is the relationship between natural selection and mutations?
dem82 [27]

Mutation can cause instant adaptation while natural selection is the process by which adaptation occurs over a series of generations.

6 0
3 years ago
Which statements describe scientific inquiry? Check all that apply.
ohaa [14]

Available options are:

A. a scientific inquiry is used only by scientists.

B. scientific inquiry is a process of asking and answering questions.

C. scientific inquiry has only one correct pathway.

D. scientific inquiry often involves similar processes and practices.

E. scientific inquiry involves performing investigations and collecting data.

Answer:

B, D, E

Explanation:

Given that scientific inquiry is a term that described how people mostly scientists, observe the natural world and then come out with credible justification established on the findings that were derived.

Hence, the statements that describe scientific inquiry are:

1. B. scientific inquiry is a process of asking and answering questions. Through this, scientist want to understand the reason behind a certain phenomenon

2. D. scientific inquiry often involves similar processes and practices. To carry out scientific studies, certain steps and practices are required, regardless of the subject under study, which does not entirely change.

3. E. scientific inquiry involves performing investigations and collecting data. This is because to carry out a scientific inquiry, part of the steps and practice includes performing investigations and collecting data, regardless of the subject under study.

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Answer:

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Explanation:

Well then how is a chicken born.

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