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Colt1911 [192]
3 years ago
14

What two substances do geologists use in radiocarbon dating

Biology
1 answer:
Elan Coil [88]3 years ago
5 0

The two substances that scientists use are

carbon-14 and carbon-12

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Approximately 90% of human cancer cells exhibit significant levels of telomerase. Does this mean that telomerase is an oncogene?
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Answer:

No, telomerase is not an oncogene. It prevents the senescence that would occur due to shortened telomeres, but the cell proliferation might still be mitogen-dependent.

Explanation

telomerase is not responsible for causing  deregulation while oncogenes cause deregulation .

Telomeres length shorten after the cell division which stops them to divide again and cell die.

Telomerase prevents this decline in some kinds of cells, including stem cells, by lengthening telomeres, and the hope was that activating the enzyme could  prevent senescence.

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3 years ago
Over time, three types of cells derived from this single-celled animal have emerged with specialized functions and they interact
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Golgi bodies, endoplasmic reticulum and lysosomes.

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Many vesicles are formed in the Golgi bodies and the endoplasmic reticulum, that is responsible for the transportation of materials from one part of the cell to another. Endoplasmic reticulum is the organelle that launches the toxin-loaded vesicles or in other words it is responsible for detoxification i. e. removal of toxic substances from the cell. Lysosomes is the organelle that act against the microorganisms such as bacteria , virus etc.

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What is driving force for surface ocean currents
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Which of the following best describes a benefit of studying biology.
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One is able to intelligently debate issues.

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