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dimulka [17.4K]
3 years ago
10

The ras proto-oncogene can become an oncogene by a single point mutation that alters its protein product to have _______ activit

y.
A. more GTPase
B. less nucleotide exchange
C. greater nucleotide exchange
D. constitutive Raf-activation
Biology
1 answer:
34kurt3 years ago
7 0

Answer:

The correct answer is D.

Explanation:

The Ras Proto-Oncogene is a gene found in normal cells, which by the single point mutation mentioned in the question, can turn into Oncogene. Because Proto-Oncogene is a gene that controls and regulates the division of the cell, a mutation in this gene leads to uncontrolled cell divisions which then leads to cancer. The correct answer is D since RAF-Activation describes "Rapidly Accelerated Fibrosarcoma, fibrosarcoma being a cancer which affects fibrobalst cells.

I hope this answer helps.

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Answer:

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Explanation:

The studies of Piaget suggested that when a child is born, his brain if of a very basic kind of structure. He did not agree with the idea that intelligence is a pre-determined trait and in contrast he said that during the process of child's growth and development, when the interaction with environment occurs, his cognitive abilities also grow.

When the child is able to realize that term heavy describes an object one way and the term big describes it another way, that is the point when , children have acquired the cognitive skill of conservation.

Hope it help!


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Explanation:

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