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Nata [24]
3 years ago
6

Please answer as many as you can! will give brainlist!

Biology
1 answer:
Simora [160]3 years ago
8 0

Answer:

hi

Explanation:

I am I home school to haha

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Discuss why prokaryotic cells probably appeared before eukaryotic cells​
dsp73

Answer:

Prokaryotes are smaller and less developed compared to eukaryotes. Some of them inhabit very primitive environments that resemble earth’s early stages. Endosymbiotic theory states that eukaryotes arose by the endosymbiosis of prokaryotes.

Explanation

By endosymbiont theory, eukaryotic cells arise from prokaryotic cells. Here, the theory shows that eukaryotic ancestors lived in close association with prokaryotes, wherein in some cases, prokaryotes have been engulfed and might have lived inside eukaryotes.

Upon being engulfed by a host cell as undigested prey, these prokaryotes could have been internal parasites of the eukaryotes. But, later on, their relationship becomes mutualistic and these prokaryotes become incorporated as organelles, such as in the case of chloroplasts and mitochondria, which were previously separate prokaryotes

______________________________________

6 0
2 years ago
What does polymerase chain reaction (PCR) do?
sineoko [7]

Answer:

A. makes more copies of a sample of DNA

8 0
3 years ago
Describe the structure and function of capillaries.
storchak [24]

Answer:

Blood vessels which help the body carry red blood cells throughout the bodies functions.

Explanation:

Capillaries, the smallest and most numerous of the blood vessels, form the connection between the vessels that carry blood away from the heart (arteries) and the vessels that return blood to the heart (veins). The primary function of capillaries is the exchange of materials between the blood and tissue cells.

3 0
3 years ago
If you measured the ld50 for a particular chemical, you would know:
Liono4ka [1.6K]
<span>the interdisciplinary study of how humanity affects other organisms and the abiotic environment</span>
3 0
3 years ago
24. The average distance from the sun to Pluto is approximately 6.10 x 10 km. How long does it take light from
bonufazy [111]

The time taken by light to reach pluto will be 5.6 hours.

<h3><u>Explanation</u>:</h3>

The light is a electromagnetic wave that has the highest velocity and same velocity as all other electromagnetic radiations existing in this universe. The light takes about 8.2 seconds to reach from sun to earth. So lets check howmuch time does light take to reach pluto from sun.

The speed of light was calculated to be 3\times10^{8 m/s. This is the speed of each and every electromagnetic waves.

The distance of pluto from sun is huge. On an average it's 6.1\times10^{9 km or 6.1\times10^{12 m.

So time taken by light to reach from sun to pluto will be 2 \times 10^4 seconds. Or actually 5.6 hours.

8 0
3 years ago
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