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Mamont248 [21]
3 years ago
8

What do catalyst do in chemical reactions?

Biology
2 answers:
Shtirlitz [24]3 years ago
3 0
Catalyst speeds up the reaction rate of a chemical reaction
AlladinOne [14]3 years ago
3 0
They speed up reactions by lowering the activation energy
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Who would you expect to be<br> most at risk for devoloping<br> the bone disease pickets?
ivolga24 [154]

Answer:

Children born to mothers with dark skin, living far from the equator.

Explanation:

I would say this is the answer but I'm not sure. This is just what I think. I asked my mom about it and she said the same thing I did. I hope this helps.

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3 years ago
Frogs have lungs for breathing, but they also absorb dissolved oxygen directly through their skin. This allows respiration to oc
alukav5142 [94]

Answer: B. Water breaks down into oxygen molecules for respiration.  


Water is the required for photosynthesis, a process by which plants (terrestrial and aquatic) makes their food by utilizing water as a reactant to produce oxygen and glucose as product. The glucose act as a source of energy for conducting various metabolic processes in plants but oxygen is released in the air.

6CO_2\ \ \ \ +6H_2O\rightarrow\ C_6H_{12}O_6+6O_2\\carbon\ \ \ \ water\ \ \ \ \ \ \ \ glucose\ \ \ \ \ \ \ oxygen\\ dioxide

This oxygen is necessary for terrestrial and aquatic animals for respiration. Therefore, water breaks down into oxygen by the process of photosynthesis, hence water plays important role in respiration in living beings.  


5 0
3 years ago
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Which statement best describes the evolutionary significance of mutualism?
krok68 [10]

Answer:

C) Interaction increases the survival and reproductive rates of mutualistic species.

Explanation:

A) Mutualism offer more biodiversity to a community.

    Biodiversity is the different species living in one environment. Since mutualism is only involving two species, it wouldn't increase the biodiversity of one ecosystem, making it incorrect.

B) Individuals partaking in a mutualistic relationship relationship are more resistant to parasites.

    Mutualism is only benefiting two species, not their immunity to diseases and parasites. These two have no correlation with each other, making it incorrect.

D) Mutualistic interaction lessens competition in communities where it is present.

    Since mutualism is only benefiting two species, they have no correlation since the relationship doesn't affect the different species in the environment.

E) Mutualistic relationships allow organisms to synthesize and use energy more efficiently.

    Although there could be some relationships involving energy transfer between the species, that would sound more like commensalism or even paratsitism if you think about it. However, it is very uncommon and usually energy has no relationship with species relationships, making it incorrect.

Hope this helps! My deepest apologies if I got in incorrect!

5 0
3 years ago
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Assuming that the collision factor remains the same, by how much must an enzyme lower the activation energy of the reaction in o
Anestetic [448]
(8.314 J/molK)(310K)ln(3E5) = E-EcatE-Ecat 
<span>=32504.22 J/mol = 32.504 KJ/mol (pay attention to any requirement on sig fig)

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
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3 0
3 years ago
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Who gerrymanders?<br><br><br><br><br><br> X.X
9966 [12]

Answer:

American politician Elbridge Gerry, Vice President of the United States at the time of his death, who was Governor of Massachusetts.

Explanation:

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