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Black_prince [1.1K]
2 years ago
14

HELP Does anyone know this?

Biology
1 answer:
castortr0y [4]2 years ago
5 0
You got it right! Main sequence stars are stable, for example Our Sun.
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3 years ago
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Which two cellular organelles in eukaryotes have both electron transport systems and chemiosmotic mechanisms?
aalyn [17]

Answer:

Mitochondria and the chloroplast

Explanation:

Electron transport refers to the transfer of of electrons from electron donors to electron acceptors via a reduction-oxidation reaction.  

In the mitochondria the process is called Oxidative phosphorylation whereas in the Chloroplast it is called Photo-phosphorylation since it utilizes light.

Chemiosmotic mechanisms allow the movement of ions across a semi-permeable membrane down their electrochemical gradient.

In both mitochondria and chloroplast,have these mechanisms for the production of ATP .

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3 years ago
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lutik1710 [3]

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3 years ago
#1. Another name for unicellular organisms that dominated Earth up to the Precambrian time is A. eukaryotes. B. cyanobacteria. C
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The correct answer for question number 2 is C - the greenhouse effect is related to the phenomenon of an increase in average surface temperature known as global warming.

The correct answer for question number 3 is D - the colourless and odourless gas that is produced by the radioactive decay of Uranium-238 and is considered to be a cancer-causing agent is Radon.

The correct answer for question number 4 is B - Scientists can determine if oxygen existed in Earth's Archean atmosphere by looking for oxidized iron in rocks.
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3 years ago
Mendel formulated his principles of inheritance based on _____.
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<span>observations on the outcomes of breeding experiments. </span>
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