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BioBeyond unit 4- First signatures of life Exam Questions and Complete Solutions Graded A+
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BioBeyond unit 4- First signatures of life Exam Questions and Complete Solutions Graded A+
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BioBeyond unit 4- Firstsignatures of life Exam
Questions and Complete
Solutions Graded A+
From the video, what do scientists use to determine the age of these rock layers exposed in the
Australian desert? - Correct Ans: Tiny mineral grains in the rock
Let's take a moment to review what you observed at Nilpena. The organisms you observed represented:
- Correct Ans: The rise of the oldest complex organisms
If life was microscopic, what kind of evidence would be the easiest to look for while observing the rock
to indicate something once lived here? - Correct Ans: Indirect
- Correct Ans: click on image 2 or 3
What characteristics could you use to identify more of these structures? The structure has been outlined
for you and you can get a closer look in the gigapan image (magnifying glass icon) if necessary. - Correct
Ans: - Tiny laminations in the layers
- A foamy texture within the rock
- Appears eroded or a deeper cut in the rock
Here you see all of the observations that have been collected from this field site. Using your new skills to
identify possible signs of life, identify the images that could possibly contain these signs of life based on
visual observations. Click "Next" once you've made your selections. - Correct Ans: choose all 6
Below you see all of the items that have been collected from this field site. Identify the structures that
could possibly be signs of life based on visual observation. - Correct Ans: - image 2
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