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Gre4nikov [31]
3 years ago
6

The change that occurs at point C could be caused by Multiple choice question. A) increased predation by wolves. B) a wet year w

ith increased vegetative growth. C) increased competition from moose herds. D) a dry year with decreased vegetative growth.
Biology
1 answer:
lakkis [162]3 years ago
4 0

Answer:

The answer is "Option B"

Explanation:

A wet season with increased plant growth is indicated by the fact that the population of Elks from beginning point C attained maximum population size (K100) and remained stable until point D. That's why the difference at point C could be due to the a wet year still higher plant growth.

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Which of the following represents the correct format for the scientific name of an organism? Which of the following represents t
scZoUnD [109]

Answer:

<em>Staphylococcus aureus</em>

Explanation:

According to the rule of binomial nomenclature, the name of the organism is written in two parts that are-

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4 0
3 years ago
The lactose (lac) operon in E. coli is an example of a repressed gene when lactose is not available in a cell. In 3-5 sentences
irakobra [83]

Answer:

Please find the detailed explanation of this statement below

Explanation:

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.

However, in the absence of lactose, LAC REPRESSOR, which is a transcription factor (protein), prevents the binding of RNA polymerase to the PROMOTER region by binding to the OPERATOR region of the lac operon. This inhibits the expression of the lactose genes in the operon.

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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Forms of Energy
shusha [124]

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2 years ago
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