1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mrs_skeptik [129]
3 years ago
9

Explain the process of the electron transport chain. where do the molecules used in the process come from? what powers the proce

ss?
Biology
1 answer:
Advocard [28]3 years ago
3 0
Process of Electron Transport Chain (ETC), is a series of transferring from electron donors to their acceptors.  It basically means a transfer from high energy molecule to a low-energy molecule.  This process of extracting energy by transfer is classified as a chemical reaction and we see it is the path taken of cellular respiration (NADH) and FADH2) and in photosynthesis, NADPH.  It starts with an electron, NADH and FADH2, when the electron donors release a proton gradient and it creates an imbalance.  Think of it as a see-saw with one heavy person on one end and a lighter one on the other end.  The protons actually attempt to defuse back across this see-saw of a membrane and it releases energy during the cross over which we call Chemiosmosis.
You might be interested in
Following the Industrial Revolution, there was a dramatic change in the coloring of moths near the town of Manchester, England,
mr Goodwill [35]
Need more light or it won’t work
8 0
1 year ago
Hloroplasts are energy organelles found in _____. animal cells plant and animal cells all living cells plant cells
enot [183]

I am going to assume you meant "chloroplasts" instead of "Hloroplasts"

Your answer will be plant cells

Chloroplasts makes the energy for the plant by conducting photosynthesis, therefore, they are only found in plant cells.

4 0
3 years ago
Which of the following have been linked to the dramatic global decline of amphibian populations? Select one: a. drainage of wetl
charle [14.2K]
<h2>The correct answer is: e.</h2>

Explanation:

  • Decline in the global population of amphibians is due to multiple reasons which include:
  1. A moist ecosystem is necessary for amphibians especially for the purpose of their reproduction. The drainage of the wetlands deprives them of their habitat.
  2. Pollutants adversely affects the survival of the gametes, tadpoles or the adult amphibians by acting as toxic agents and inhibiting their normal metabolic function.
  3. Infectious diseases often cause their death resulting their population to decline.
  4. Global climate warming affects their normal metabolic growth and development and hence causes their population to decline.

7 0
3 years ago
Abiogenesis refers to how living organisms arose from inanimate matter. Place the sentences in order according to how life on Ea
horrorfan [7]

Answer:

(A) -> (D) -> (C) -> (B)

Explanation:

First off, given that the problem requires us to explain how life on Earth may have arisen <u>from terrestrial origins</u>, we can discard sentence (E), as impacts from meteorites would count as extraterrestrial origins.

Then it's just a matter of describing the steps by which simple compounds turned into more and more complex structures, that would in turn lead to the origin of life.

Simple inorganic compounds (such as CO₂, or NH₃) were exposed to energy, because of that they formed simple organic molecules, like carbohydrates or amino acids.

These organic molecules, in turn, would self-assemble into more complex structures, such as proteins.

Lastly, there's the phenomenon of Compartmentalization, where large organic structures became enclosed within a membrane-like structure, separating them from the 'outside' medium and thus creating primitive cells.

5 0
3 years ago
Duchenne muscular dystrophy is an X-linked recessive disease. A phenotypically normal couple wants to start a family. The woman’
Andreyy89

Answer:

\frac{1}{8}

Explanation:

From the question: Duchenne muscular dystrophy is an X-linked recessive disease.

Now for an X-linked recessive disorder to be affected by a male individual; it only requires the presence of only one copy of the recessive allele of the disease to be present BUT in a female individual. both copies of the recessive allele must be present.

Let the X-linked recessive disease(i.e Duchenne muscular dystrophy) be = (ⁿ)

However, we are told that the couples are normal and are unaffected. Therefore;

the male partner (XY) will be:   X^NY

the female partner (XY) will be: X^NX^N

Similarly, the question proceeds by telling us that: the woman's brother has the disease.

Definitely, it's possible that this unaffected woman is a carrier of the disease.

So, if she is a carrier; we have her traits to be: X^NX^n

NOW, if a cross exist between these couples; we have

X^NY     ×        X^NX^n

                     X^N                         Y

X^N                X^NX^N                  X^NY

X^n                 X^NX^n                   X^nY

So, we have offspring as follows:

X^NX^N  = normal unaffected female  

X^NY     = normal unaffected male

X^NX^n   = female carrier for the Duchenne muscular dystrophy disease

X^nY      = affected male with the Duchenne muscular dystrophy disease

So, the probability of the child to be affected with the disease = \frac{1}{4}

Also, the probability that the first child will be a male or a female = \frac{1}{2}

∴

the  probability that the couple’s first child will be affected = \frac{1}{4}*\frac{1}{2}

=\frac{1}{8}

4 0
3 years ago
Other questions:
  • Joseph cornell's, suzy's sun (for judy tyler) is considered to be a(n):
    7·1 answer
  • Which term is used to describe populations that live close enough to interbreed?
    9·1 answer
  • Compare structure to function of organs in a variety of organisms
    8·1 answer
  • Explain the fluid mosaic model
    6·1 answer
  • Explain the process of mitosis in a tissue culture for normal cells
    9·2 answers
  • Que es recombinacion genetica artificial?
    10·1 answer
  • Why do complex carbohydrates, proteins, and fats decrease when the other molecules increase?
    10·2 answers
  • Which of the following is NOT a natural resource???
    14·2 answers
  • Which will most likely cause an increase in the frequency of genetic mutations in humans?.
    10·1 answer
  • during reabsorption of water in the proximal convoluted tubule, what causes water to diffuse from the lumen into the interstitia
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!