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maria [59]
4 years ago
9

How did the research presented in the article affect scientists understanding of the evolution of eukaryotes

Biology
1 answer:
Nat2105 [25]4 years ago
3 0

Answer:

A new study provides a key insight into a milestone event in the early evolution of life on Earth -- the origin of the cell nucleus and complex cells. Scientists peered deep inside current living cells, known as Archaea - the organisms that are believed to most closely resemble the ancient intermediates between bacteria and the more complex cells that we now know as eukaryotic cells.

Explanation:

Hope this helps

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What is the potential energy in the thylakoid membrane used for?
liubo4ka [24]

The right answer is to perform photosynthesis (more precisely to convert ADP to ATP by ATP synthase).

Light comes to us in the form of photons. These photons have a different energy potential depending on their wavelength.

When a pigment picks up a photon corresponding to its absorption capacity, one of its electrons goes into the excited state. This energy can be transmitted in 3 ways: either by spreading it in the form of photon or heat; both ways lose energy. The third is to transmit resonance energy and there is almost no loss of energy.

A photosystem consists of a reaction center and a collector antenna to optimize the absorption of photons triggering photochemical reactions in order to operate the ATP synthase to produce ATP in the presence of a hydrogen gradient.

8 0
3 years ago
Read 2 more answers
Sickle cell disease (SCD) is caused by a recessive version of the hemoglobin gene. In the US, SCD occurs in about 0.2% of the ne
ludmilkaskok [199]

Answer:

Number of babies with dominant hemoglobin genotype will be 9120

Explanation:

Given -

0.2% of babies have SCD which means they have recessive version of hemoglobin

Let the recessive version of hemoglobin be represented by "h" and normal version of hemoglobin be represented by "H"

Babies having SCD will have genotype "hh" i.e homozygous recessive.

As per Hardy Weinberg's equation -

q^2= 0.002

Thus, frequency of allele for recessive version of hemoglobin (h) is

\sqrt{q^2} \\= \sqrt{0.002} \\= 0.045\\

Frequency of allele for normal version of hemoglobin (H) is

1-0.045\\= 0.955

Thus, Frequency  of population with normal version of hemoglobin i.e HH is equal to

p^{2}

= 0.955^2\\= 0.912

hence, number of babies with dominant hemoglobin genotype will be

0.912 * 10000

= 9120

7 0
3 years ago
1. State one possible negative effect of a warming trend on Earth. Specify how this effect will
sdas [7]

Answer:

One stated possible negative effect of a warming trend on earth is that the polar ice caps could melt.

Explanation:

Specification on how this will have a negative impact on the living environment is that it will cause sea levels to rise this is negative because: tsunamis will become more severe and damaging to land. Rain storms will have severe floods then what we have now.

Hope this helps.    

7 0
3 years ago
Which characteristics make golden eagles successful hunters? (Select all that apply.)
Novay_Z [31]

The characteristics that makes golden eagles successful hunters is their good eyesight and their large wingspans.

<h3>The characteristics of a golden eagle:</h3>

The golden eagle is one of the most widespread eagle in the world.

That is because they are able to adapt in almost every type of climate, especially open areas with vegetation.

Some of the characteristics that makes them successful hunters is the good eyesight and large wingspans they possess.

Taking the vision of human beings for example, what looks sharp and clear to us at 5 feet is just as clear to a golden eagle from 20 feet away.

Also, their large wingspans helps then fly long distance in search of preys.

Therefore, the characteristics that makes golden eagles successful hunters is their good eyesight and their large wingspans.

Learn more about eagles here:

brainly.com/question/2565511

8 0
3 years ago
Read 2 more answers
The bodys endocrine system consist of which glands
Furkat [3]
Hypothalamus.
pituitary gland.
thyroid.
parathyroids.
adrenal glands.
pineal body.
reproductive glands (depending on the sex)
pancreas.
4 0
4 years ago
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