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katovenus [111]
3 years ago
13

According to the model developed by Copernicus, what causes day and night on Earth?

Biology
2 answers:
Gnom [1K]3 years ago
7 0
A IS THE RIGHT ANSWER
kramer3 years ago
6 0

<u>It is the Earth that orbits around the Sun</u>, <em><u>as the Heliocentric Theory (Helios = Sun) of Copernicus said</u></em>.

<em><u>The Sun does not "come out" or "set"</u></em>: <u>in reality it is the Earth that, by turning or rotating on its own axis, causes day and night</u>.

<em><u>The answer is</u></em>: <u>A. Earth rotates on its axis.</u>

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The set of proteins in the cristae of the mitochondrion, which collectively extract the energy from reduced coenzymes to form at
lesantik [10]

Cell respiration involves different steps, among which there is the oxidative phosphorilation that produces and stores ATP. The answer is the <u><em>electron transporter chain</em></u>.

<h3>ELECTRON TRANSPORTER CHAIN -oxidative phosphorylation-</h3>

The electron transporter chain + chemiosmosis constitute the process of oxidative phosphorylation.

  • Chemiosmosis

Chemiosmosis refers to ATP production through a proton gradient.

  • Electron transporter chain

The electron transporter chain is a series of molecules and proteins located in the internal mitochondrial membrane.

It constitutes a series of enzymatic reactions to release and save energy for the correct functioning of the organism.

Along the chain, there are four proteinic complexes in the membrane, I, II, III, and IV, that contain the electrons transporters and the enzymes necessary to catalyze the electrons' transference from one complex to the other.

Different redox reactions occur to pass electrons along the chain.

Released energy creates a proton concentration gradient used to synthesize ATP.

<h3>Steps in the electectron transporter chain</h3>

1) NADH provides electrons to the first complex, Complex I. From there, electrons go to the coenzyme Q that carries them to complex II. Meanwhile, complex I pomp four protons to the intermembrane space.

2) Complex II receives electrons from CoQ and also receives electrons from FADH2. Electrons are sent from complex II to ubiquinone Q, which carries these electrons to complex III.

3) Complex III receives electrons from ubiquinone Q and pomps protons to the intermembrane space. Electrons are transferred to Cytochrome c.

Electrons travel from cytochrome c to complex IV.

4) Complex IV is the last complex that pomps protons to the intermembrane space.

5) Electrons are sent to O₂ molecules, which also receive protons in the matrix to create water molecules. Four electrons are needed to produce two water molecules from one O₂ molecule.

The proton gradient is used to produce ATP molecules.

In conclusion, <em>the set of proteins in the cristae of the mitochondrion, which collectively extract the energy from reduced coenzymes to form atp, are called the</em> <u><em>electron transporter chain</em></u>.

You will learn more about the electron transporter chain at

brainly.com/question/24372542

7 0
2 years ago
In order to keep all other things the same and isolate the effects of one particular variable in the biology experiment, Kate wi
miskamm [114]

Answer:

Make sure all tested rats are the same age.

Offer the same type of food to the rats in each trial.

Explanation:

<em>In order to be able to isolate the effects of one particular variable during a research, all the subjects in each trial must be subjected to the same conditions except the variable whose effects is being isolated.</em>

Hence, Kate must offer the same type of food to the rats in each trial as well as make sure that all tested rats are the same age.

6 0
3 years ago
The number of rhinoceroses has decreased to near extinction. How are rhinoceroses classified under the Endangered Species Act
ahrayia [7]

Answer:

endangered

Explanation:

8 0
3 years ago
What conditions make for a violent volcanic eruption?
riadik2000 [5.3K]
A violent volanic eruption occurs due to magma with high viscosity. Especially when their is a lot of pressure inside thr volcano.
6 0
3 years ago
Read 2 more answers
19. During DNA replication, a complementary strand of DNA is made from each original DNA strand. Thus, if a portion of the origi
Lerok [7]

Answer:

AAGCGATGCGA

Explanation:

Because it is complementary base pair so A always pairs with T and G always pairs with C. u can also remember them as Apple Tree and Car Garage.

hope this make sense:)

5 0
2 years ago
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