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gregori [183]
3 years ago
7

Jeannie put her soccer ball on the ground on the

Biology
2 answers:
Dominik [7]3 years ago
7 0
A, gravity. Gravity acts on an object to pull it downwards, like how we stay down to the earth. Since it was on a slope, the gravity pulled the ball down.
emmasim [6.3K]3 years ago
5 0

Answer:

A. gravity

Explanation:

gravity is a force that makes things go downwards in this case Jeannie put her soccer ball on the ground on the side of the hill, the hill was in the top hence the ball went downward

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How many reactants are in the fermentation chemical equation?
sergij07 [2.7K]
The reactants for fermentation are:
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2.) NADH
3.) A proton
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The process of fermentation results in the reduction of pyruvate to form lactate acid and the oxidation of NADH to form NAD+
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4 0
3 years ago
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3 years ago
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irakobra [83]

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Please find the detailed explanation of this statement below

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Firstly, a repressed gene is a gene whose expression has been inhibited or repressed. The lac operon in E.coli bacteria is a regulatory unit containing structural genes, a single promoter and operator regions. The promoter is the region where the transcription enzyme (RNA polymerase) binds to in order to transcribe the genes in the lac operon. The structural genes in the lac operon can only be expressed in the presence of lactose sugar.

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Note that, the structural genes in the lac operon (lacZ, lacY, lacA) code for proteins that help break down lactose sugar for energy in the E.coli bacteria. Therefore, a bacteria cell with a repressed lac operon will be unable to degrade lactose sugar.

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