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Contact [7]
3 years ago
13

What was Earth's early atmosphere like?

Biology
1 answer:
Yuri [45]3 years ago
5 0
The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. There were smaller proportions of water vapour, ammonia and methane. As the Earth cooled down, most of the water vapour condensed and formed the oceans. ... For example, volcanoes release high quantities of carbon dioxide.
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Measurements of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus. The measured DNA leve
BigorU [14]

Answer:

a) interphase(G2)

Explanation:

<em>The nucleus would contain 6 pg of DNA at the interphase (G2) phase of the cell cycle.</em>

The cell cycle is characterized by tow main phases, namely;

  • The interphase
  • The m phase

The interphase is divided into G0, G1, S, and G2 phase respectively while the m phase is divided into prophase, metaphase, anaphase and telophase respectively.

At the S phase of the interphase specifically, DNA is replicated and the amount of DNA in the cell becomes double.

<u>Hence, a cell whose DNA amount ranges from 3 - 6 pg will have exactly 6 pg after the S phase of the interphase, which is G2 phase.</u>

The correct option id a.

5 0
3 years ago
Drag each graph to the correct location on the image.
fenix001 [56]
<h2>Answer:</h2>

What you have in the picture is correct. :>

<h3>Explanation:</h3>

I took the test and the correct answer is what you have. :>

5 0
3 years ago
Read 2 more answers
Are opposums sexual or asexual
Kay [80]
Hey there! :D

Sexual reproduction is when two opposite genders mate to reproduce. 

Asexual reproduction is when one being can have offspring. 

Opposums are sexual. They have a mate and they reproduce. 

I hope this helps!
~kaikers

8 0
3 years ago
List and explain the three classes of enzymes​
joja [24]

Answer:

Oxidoreductases, transferases and hydrolases are the most abundant forms of enzymes.

Explanation:

3 0
3 years ago
Analysis of the second swab has confirmed that the causative organism is Streptococcus pyogenes, a gram-positive organism. Imagi
Ierofanga [76]

Answer:

Purple, spherical-shaped organisms arranged in chain like formations.

Explanation:

Bacteria are the microscopic organisms and included in the prokaryotes as they do not have nucleus. Two main types of bacteria are gram positive bacteria and gram negative bacteria.

The gram positive bacteria has thick cell wall peptidoglycan cell layer and can uptake the crystal voilet stain. These bacteria seems purple under the microscope due to the uptake of stain. The bacteria Streptococcus pyogenes are spherical in shape and occurs in the cluster of chain.

Thus, the correct answer is option (d).

7 0
3 years ago
Read 2 more answers
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