BIOBEYOND UNIT 4- FIRST SIGNATURES OF LIFE
FREQUENTLY TESTED ACTUAL EXAM QUESTIONS
WITH CORRECT ANSWERS
Question 1.
From the video, what do scientists use to determine the age of these rock layers exposed in the
Australian desert?
ANSWER
Tiny mineral grains in the rock
Question 2.
Let's take a moment to review what you observed at Nilpena. The organisms you observed
represented:
ANSWER
The rise of the oldest complex organisms
Question 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?
ANSWER
Indirect
Question 4.
ANSWER
click on image 2 or 3
Question 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.
ANSWER
- Tiny laminations in the layers - A foamy texture within the rock - Appears eroded or a deeper cut in
the rock
1
FREQUENTLY TESTED ACTUAL EXAM QUESTIONS
WITH CORRECT ANSWERS
Question 1.
From the video, what do scientists use to determine the age of these rock layers exposed in the
Australian desert?
ANSWER
Tiny mineral grains in the rock
Question 2.
Let's take a moment to review what you observed at Nilpena. The organisms you observed
represented:
ANSWER
The rise of the oldest complex organisms
Question 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?
ANSWER
Indirect
Question 4.
ANSWER
click on image 2 or 3
Question 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.
ANSWER
- Tiny laminations in the layers - A foamy texture within the rock - Appears eroded or a deeper cut in
the rock
1
