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Nady [450]
3 years ago
5

How do enzymes act as catalysts? (Choose ALL that apply) They allow for fewer collisions of molecules (enzymes + substrates) The

y allow for more collisions of molecules (enzymes + substrates) They raise the amount of activation energy needed to complete the reaction They lower the amount of activation energy needed to complete the reaction They speed up chemical reactions to form more products
Biology
1 answer:
vazorg [7]3 years ago
6 0

Answer:

- They allow for more collisions of molecules (enzymes + substrates)

- They lower the amount of activation energy needed to complete the reaction.

- They speed up chemical reactions to form more products

Explanation:

Enzymes are proteinous molecules that serves as catalyst in living systems. Like every other catalyst, enzymes function to SPEED UP the rate of biochemical reactions by LOWERING/REDUCING the activation energy, which is the energy required for a reactant to form product (completion of reaction).

Enzymes like other catalysts causes faster movement of molecules in the reaction i.e. they allow for more collisions of molecules (enzymes + substrates). This causes the rate of reaction to increase and hence, speeden the reaction.

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Bacteria are prokaryotic organisms.
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The most common phenotype or allele for a gene in a population is referred to as
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On the average, about _____ of a teenager's total daily energy intake comes from snacks.
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8 0
4 years ago
Following a bad fall on the ice, 54-year-old Neal landed on his gluteal region. Subsequently, he has absolutely no feeling in th
Nonamiya [84]

The posterior cutaneous nerve of the thigh.

Loss of sensation to the sole of the foot would result from nerve blockade of the tibial nerve at the medial malleolus.

<h3>What is a sensory nerve?</h3>

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Thus, this could be the answer.

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5 0
2 years ago
Which of the following represents a scenario of potassium cyanide toxicity?
Damm [24]

Answer:

Oxidative phosphorylation that generates most of the ATP is blocked, and oxygen cannot accept the electrons from NADH.

Explanation: Sorry this is late and may be wrong but it is my best guess and here is why:

Potassium cyanide blocks the ETC where the majority of ATP is produced. The ETC is a oxidative phosphorylation process where oxygen is needed as the final electron acceptor of NADH.  

The first answer can be eleminated because oxidative phosphorylation produces the most ATP.

The second answer can be eleminated because chemiosmosis does not generate ALL the ATP during cellular respiration, but does produce most of it. Still they worded it as an "all or nothing" type of question so I don't think it is correct.

The fourth answer may not be correct because NAD does not pass on an electron to NADH. Instead, NADH donstes electrons to the ETC and is then turned into NAD. So the process listed is technically backwords.

Sorry I can't be sure about the answer but this is how I broke it down.

8 0
3 years ago
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