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Sveta_85 [38]
3 years ago
15

Which statement best describes how a catalyst can speed up a chemical reaction?

Biology
2 answers:
lara [203]3 years ago
8 0
<span>Catalysts speed up reactions by opening up pathways that require less energy. What this means is that they reduce the amount of energy needed for a reaction to take place so if it needs less energy it takes less time to react. The catalyst does not alter the reaction in any other way other than by altering its speed.</span>
Nezavi [6.7K]3 years ago
5 0

Answer:

A

Explanation:

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5. In 1928, Alexander Fleming noticed that a mysterious blue-green fungus had grown on some bacterial colonies that were known t
Otrada [13]

Answer:

The steps that can be seen in this story are observation and the questioning phase, which can also be called elaboration of the problem.

Explanation:

The scientific method is a set of phases that are able to guide researchers to the creation of scientific knowledge, through an experiment. This method is essential for conducting scientific research, allowing an experiment to be managed in a way that promotes answers to scientists' questions. The scientific method presents the phases called observation, questioning (or elaboration of the problem), elaboration of hypotheses, experimentation, analysis of the results and conclusion.

In the story shown in the question above, we can see the phases called observation and questioning. The observation takes place the moment Fleming noticed a fungus capable of growing on colonies of bacteria that cause throat infections, killing them. This observation made him enter the questioning phase, when he wondered if the fungus was able to prevent the growth of these bacteria.

8 0
3 years ago
Explain how carbon is cycled between the atmosphere and geosphere. Use specific examples.
Over [174]

Answer:

Carbon starts as coal or oil in the earth, then is brought up by mining or drilling. When brought up, it is used up and the gases go into the atmosphere. Trees, soil and water act as carbon sinks, which suck up all the carbon from the air and contain it. When carbon is absorbed by the soil, it goes back into the ground.

Explanation:

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5 0
3 years ago
Which of these statements best describes a similarity between photosynthesis and dissolving in the sea?
Mama L [17]

The correct answer is D. Both absorb carbon dioxide from the atmosphere.

The process of photosynthesis is carried out using atmospheric carbon dioxide by green plants. Many gases including carbon dioxide are dissolved in seawater. Some of the carbon dioxide gas remains in dissolved state but most of the carbon dioxide is reacts with water to form carbonic acid. Dissolved gases in seawater make balance with atmosphere by mixing of the surface by wind and waves. Therefore, both photosynthesis and sea water take carbon dioxide from the atmosphere.  

8 0
3 years ago
What relationships exists between frogs and fishes in a pod
kobusy [5.1K]

Answer:

The relationship between frogs and fishes in a pod is predation.

                 

3 0
2 years ago
Heritability refers to the extent to which trait variations among individuals are attributable to their differing
LUCKY_DIMON [66]

Answer:

Phenotypes

Explanation:

Heritability refers to the extent to which trait variations among individuals are attributable to their differing observable and most often definitive or measurable physical features, often called phenotypes. Examples of this variation could be something like height or eye colour. Basically it has to be traits that depend on genetics that environmental factors

6 0
3 years ago
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