In the Section "Investigating Life: Genetic Messages from Ancient Ecosystems

question 6

Multiple Choice

In the section "Investigating Life: Genetic Messages from Ancient Ecosystems," what was the advantage of looking for DNA samples in permafrost?

• A) Most plants and animals evolved in Siberia.
• B) It is easier to take solid core samples.
• C) The enzymes that make DNA are still active in the cells.
• D) The freezing temperatures preserve the DNA.
• E) Areas with permafrost are older than other parts of the world, allowing scientists to collect samples back 1.5 to 2 million years.

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Definitions:

Sensory Registers

Memory systems that hold incoming information long enough for it to be processed further.

Auditory Registers

Memory systems that temporarily hold auditory information, allowing one to process sounds and language.

Visual Registers

Memory systems in the brain that temporarily store visual images and are essential for tasks involving visual cognition and recognition.

Capacity

The maximum amount that something can contain or the ability to perform, function, or produce.