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dem82 [27]
3 years ago
14

How does the environment define the ecologic roles of organisms?

Biology
1 answer:
KIM [24]3 years ago
6 0
Biodiversity plays an important role inecological health as much as it does for human health. ... Ecosystem engineers aredefined as: "...organisms that directly or indirectly modulate the availability
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Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp m
kodGreya [7K]

Answer:

A mutation in Ras protein which will cause hyperactivity will eventually lead to cancer.

Explanation:

Ras protein was first discovered in Rous sarcoma virus (RSV) and it is a proto-oncogene product. In normal conditions, it plays an important role in cellular signalling but in case of gain of function/hyperactivity it gets converted into cellular oncogene. In several types of cancers a point mutation has been reported in Ras protein.

Just like G protein, it is also a GTPase switch protein but unlike G protein which is trimeric, it is monomeric. In the plasma membrane, it is attached with the help of lipids like prenyl or palmitoyl groups. During signal transduction pathway when it gets activated, it downstream activates MAPK pathway and causes gene expression but when it gets hyperactivated it causes over expression of genes leading to cancer.

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3 years ago
1) Which of the following is NOT a property of life? a) Growth b) Reproduction c) Homeostasis d) Having a heartbeat .
scoray [572]

Answer:

c

Explanation:

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System that serves as a barrier against infection and injury
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Immune System. Its like the Army for your body!
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Zachary's student loans are an example of what type of loan? secured loan unsecured loan mortgage loan auto loan
MA_775_DIABLO [31]

The right option is; unsecured loan

Zachary's student loans are an example of unsecured loan.

An unsecured loan is a type of loan that is given and supported only by the borrower’s reliability without being protected by any collateral. If an individual is unable to pay the loan, the lender cannot take his or her property. Types of unsecured loan include student loans, credit cards and personal loans.


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3 years ago
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Plants in hot environments like deserts open their stomata at night because they are adapted to
stepan [7]

Answer:

To reduce water loss.

Explanation:

Keeping the stomata closed during the day, helps reduce water loss when dry, hot wind blows across it.

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2 years ago
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