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Nookie1986 [14]
3 years ago
10

Which are characteristics of eukaryotic organisms? PLZ HELPP

Biology
1 answer:
kodGreya [7K]3 years ago
8 0

Answer:

Eukaryotic cells are larger than prokaryotic cells and have a “true” nucleus, membrane-bound organelles, and rod-shaped chromosomes. The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes.

Explanation:

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ENERGY TRANSFER IN THE ATMOSPHERE:

Atmosphere surrounds the earth made up of different layers of gases such as Argon, Oxygen, Nitrogen, Exophere, Thermosphere, Mesophere, Stratosphere, Toposphere

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The Sun and its energy.

The Sun is the star located at the center of our planetary system. It is composed mainly of hydrogen and helium. In the Sun's interior, a thermonuclear fusion reaction converts the hydrogen into helium releasing huge amounts of energy. The energy created by the fusion reaction is converted into thermal energy (heat) and raises the temperature of the Sun to levels that are about twenty times larger that of the Earth's surface. The solar heat energy travels through space in the form of electromagnetic waves enabling the transfer of heat through a process known as radiation.


Solar radiation occurs over a wide range of wavelengths. However, the energy of solar radiation is not divided evenly over all wavelengths but is rather sharply centered on the wavelength band of 0.2-2 micrometers (μm=one millionth of a meter).


The physics of radiative heat transfer.

Before proceeding to investigate the effect of solar radiation on Earth we should take a moment to review the physical laws governing the transfer of energy through radiation. In particular we should understand the following points:


The radiative heat transfer process is independent of the presence of matter. It can move heat even through empty space.

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The energy flux drops as the square of distance from the radiating body.

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Radiation transfer from Sun to Earth.

Properties of Solar radiation: The Sun is located at the center of our Solar System, at a distance of about 150 x 106 kilometers from Earth. With a surface temperature of 5780 K (degrees Kelvin = degrees C + 273.15), the energy flux at the surface of the Sun is approximately 63 x 106 W/m2. This radiative flux maximizes at a wavelength of about 0.5 μm.

Solar radiation on Earth: As the Sun's energy spreads through space its spectral characteristics do not change because space contains almost no interfering matter. However the energy flux drops monotonically as the square of the distance from the Sun. Thus, when the radiation reaches the outer limit of the Earth's atmosphere, several hundred kilometers over the Earth's surface, the radiative flux is approximately 1360 W/m2.


4 0
3 years ago
please help this in due by 11:59 tonight. its and assignment on dihybrid's whatever the heck that is. i will give u a lot of poi
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Answer:de que materia es tu tarea??

Explanation:

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1. Why are antibiotics an effective treatment for bacterial diseases but not on viral<br> diseases?
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Answer:

Antibiotics cannot kill viruses because bacteria and viruses have different methods to survive and replicate. Viruses replicate via inserting their DNA into a host cell.

Explanation:

I know things.

6 0
2 years ago
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