BIOBEYOND UNIT 4 FIRST SIGNATURES OF LIFE UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS VERIFIED 2027 EDITION
1. From the video, what do scientists use to determine the age of these rock layers exposed in the
Australian desert?
Tiny mineral grains in the rock
2. Let's take a moment to review what you observed at Nilpena. The organisms you observed
represented:
The rise of the oldest complex organisms
3. 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?
Indirect
4.
click on image 2 or 3
5. 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.
- Tiny laminations in the layers - A foamy texture within the rock - Appears eroded or a deeper cut in the
rock
6. 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.
choose all 6
7. 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.
- image 2 - image 4 - image 6 - image 8
8. Some of these images are clear examples. At least one is a less clear example and may have
surprised you.
image one
9. Which of these organisms most closely resembles the structures observed here in the North Pole
Dome?
second (?) one with gray/green tint ovr it
10. Which of the following is correct regarding stromatolites?
They are fossils of where the organisms once lived
11. Which of the following images most closely represents the type of environment?
image 1
12. Shown at right is a very special target, one you saw in Written in Stone. Let's see if you remember
why it's special - what does the area on the target represent?
Time in Earth's history
1
QUESTIONS AND CORRECT ANSWERS VERIFIED 2027 EDITION
1. From the video, what do scientists use to determine the age of these rock layers exposed in the
Australian desert?
Tiny mineral grains in the rock
2. Let's take a moment to review what you observed at Nilpena. The organisms you observed
represented:
The rise of the oldest complex organisms
3. 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?
Indirect
4.
click on image 2 or 3
5. 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.
- Tiny laminations in the layers - A foamy texture within the rock - Appears eroded or a deeper cut in the
rock
6. 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.
choose all 6
7. 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.
- image 2 - image 4 - image 6 - image 8
8. Some of these images are clear examples. At least one is a less clear example and may have
surprised you.
image one
9. Which of these organisms most closely resembles the structures observed here in the North Pole
Dome?
second (?) one with gray/green tint ovr it
10. Which of the following is correct regarding stromatolites?
They are fossils of where the organisms once lived
11. Which of the following images most closely represents the type of environment?
image 1
12. Shown at right is a very special target, one you saw in Written in Stone. Let's see if you remember
why it's special - what does the area on the target represent?
Time in Earth's history
1
