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Sergio039 [100]
3 years ago
14

The earliest organisms were completely heterotrophic in nature.

Biology
1 answer:
Contact [7]3 years ago
6 0
They were completely heterophic in nature because it allowed them to absorb different material from the environment as an energy source
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Many cells make and use an enzyme, called catalase, to facilitate the decomposition of hydrogen peroxide (H2O2). The products of
Len [333]

Answer:

A. It decreases the activation energy needed to start the reaction

Explanation:

Organic catalyst which speed up the rate of organic chemical reaction is living cells are called enzymes.They have specific reaction site called active sites.This must be in prefect shape with the substrate for the organic chemical reaction to take place

When this occurs the minimum amount of  energy of  reaction to  activate or stimulate  the the atoms and molecules of the substrate to undergo chemical reaction is  lowered.This energy of reaction is celled activation energy.

Catalase thought its active sites lowers the activation energy so that the molecules of H2O2 could break down to C02 and H2 faster,thereby reducing the time for theses product to form.The is the general roles of enzyme.To increase the rate of chemical reaction,by reducing the activation  energy.

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Define and distinguish between diffusion and omosis​
Dmitry [639]

Diffusion is the spontaneous movement of substances from a region of high concentration to a region of low concentration.

Osmosis is the passage of water molecules from a high water concentration region through a selectively permeable membrane to a low water concentration region.

In diffusion, selectively permeable membrane is neither required nor involved while in osmosis, it is involved.

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List two organelles present in a plant cells put absent in an animal cell​
omeli [17]

Answer:

cell wall, chloroplasts and other specialized plastids, and a large central vacuole

Explanation:

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PLEASE HELP ASAP I WILL GIVE BRAINLIEST!!!!!!!
viktelen [127]

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D

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Which of these does not add CO2 to the atmosphere?
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C planting trees. It adds oxygen
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