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AlladinOne [14]
3 years ago
12

To test a new drug that has the potential of curing people of the common cold, a company asked human volunteers who were coughin

g and sneezing to participate in a clinical study. The objective of the experiment was to test whether the new drug could cure the volunteers in the experimental group of the common cold. But instead of two groups, these volunteers were randomly divided into three groups and treated as follows: Why was a second control group was included in this experiment?
Biology
2 answers:
MAVERICK [17]3 years ago
7 0

Answer: To help researchers conclude that results are related to the new drug and not to the orange juice.

Explanation:

I could be wrong, Hope this helps

anastassius [24]3 years ago
4 0

Answer:

The correct answer will be- control group acts as a reference to the experimental groups.

Explanation:

A scientific experiment is divided into two groups of samples: the experimental and the control group.

In the experimental group, the variable to be tested is taken into account that is the key component is studied whereas in the control group the key variable is missing and the experiment is performed into the natural conditions.  

In the given conditions, the control group is formed to compare the results of the experimental group as a control group acts as a reference to the experimental group.

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The pyruvate dehydrogenase complex catalyzes the oxidative decarboxylation of pyruvate to form acetyl‑CoA. E 1 , E 2 , and E 3 a
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Answer:

E1: Pyruvate dehydrogenase, TPP, oxidative decarboxylation reaction

E2: Dihydrolipoyl transacetylase, Lipoamide and Co-enzyme A, transacetylation reaction.

E3: Dihydrolipoyl dehydrogenase, FAD and NAD+, oxidation reaction

Explanation:

Pyruvate dehydrogenase is a multi-enzyme complex with 5 co-enzymes and 3 apo-enzymes:

Pyruvate dehydrogenase (E1) , which uses thiamine pyrophosphate (TPP) as as co-enzymes to catalyze oxidative decarboxylation of pyruvate to hydroxyethyl-TPP.

Dihydrolipoyl transacetylase (E2): which uses lipoamide and coenzyme A as co-enzymes to catalyse the transacetylation from TPP to Lipoamide to form acetyl lipoamide.

Dihydrolipoyl dehydrogenase (E3)​​ which uses FAD and NAD+ as co-enzymes to catalyze the oxidation of lipoamide

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