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melisa1 [442]
3 years ago
12

The first eukaryotes were undoubtedly

Biology
2 answers:
Elza [17]3 years ago
5 0
B. Protistans, a group thought to have given rise to other eukaryotic cells
Alexxx [7]3 years ago
4 0

Answer: Protistans

Explanation: The first appeared eukaryotes were from the kingdom protista. This kingdom consists of many organism that includes both unicellular organism and multicellular organism.

The eukaryotic organism are more complex as compared to that of prokaryotes and they have specialized organelles for performing a variety of function necessary for the survival of the organism.

Example: The DNA of the eukaryotic organisms are packed in a membrane structure known as nucleus which is absent in the prokaryotes.

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During glycolysis, glucose is broken down into two molecules of pyruvate.
Lapatulllka [165]

Answer:

Glycolysis produces pyruvate, ATP, and NADPH by oxidizing glucose. During cellular respiration, glucose combines with oxygen to form carbon dioxide, water, and ATP.

Explanation:

8 0
3 years ago
Which does not likely occur in the surrounding area during the breakdown of ATP? A. Released energy activates an enzyme B. An en
Fynjy0 [20]
<span> During the breakdown of ATP, ADP moving back to ATP synthase will most likely not happen.</span>
7 0
3 years ago
How would dna extracted from an onion be different from dna extraction from cauliflower?
JulsSmile [24]
Dna extration from a onion and from a cauliflower would be different because even though all DNA is composed by the same nucleotides (A, T, C and G), the sequence of their genes will be different. That difference is why a cauliflower doesn't look like a onion. The cauliflower has genes that, when expressed, make the organism look like cauliflower and nothing else..
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7 0
3 years ago
Why are people concerned about the sustainability of fossil fuels?
Reptile [31]

Answer:

How about you tell what ur answers and ill see if there wrong and help u with them ..?

is that okay?

we all have our own school work to do so ill try and help just give me ur answers :)

Explanation:

4 0
3 years ago
Read 2 more answers
Are the ocean and present atmosphere leftovers from the original atmosphere of earth?
tino4ka555 [31]
The ocean and the present atmosphere themselves are not leftovers from the original atmosphere of Earth. However, they do contain components within them that give us and scientists ideas of what Earth's past atmosphere was like. 

Some example include:

1) Ice cores - scientists may go to Antartica or Alaska and stick this metal tube into the ice to remove what is known as an "ice core". This is then taken back to the lab for analysis. So what happens is that this ice as we know is constantly melting and freezing with different seasons and climate change. So, when the ice starts to crystallize, particles like carbon dioxide, sulfur etc may get trapped as bubbles in the ice. This is what scientists look for in ice coring and this is how they know that Carbon dioxide levels were relatively high back then (Not as high compared to now). 

2) Ocean sediment cores - this is the exact same process of the ice cores except they take cores of sediments (esspecially calcium carbonate that contains oxygen). As you know, CaCO3 is found in the exoskeletons of organisms that die and build up on the ocean floor. 

Those are some of the main ways that the present atmosphere and oceans have leftovers from the original atmosphere of Earth. 

Hope that helped!
8 0
3 years ago
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