What is the main reason humans cannot see in the dark without assistance?

Understanding Salmon's Night Vision

Interactive Video
•
Biology, Science
•
7th - 12th Grade
•
Hard

Ethan Morris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Human eyes are not sensitive to infrared light.
Humans lack the necessary photoreceptors.
Human eyes are too small.
Humans have too many photopigments.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do salmon differ from humans in terms of vision?
Salmon can see in complete darkness.
Salmon have more photoreceptors.
Salmon can change their vision spectrum.
Salmon can see ultraviolet light.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of photopigments in the eye?
To absorb specific wavelengths of light.
To change the color of the eye.
To produce vitamin A.
To increase the size of the eye.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What allows salmon to see in murky freshwater environments?
Their ability to see in complete darkness.
Their ability to see ultraviolet light.
Their ability to see infrared light.
Their ability to see blue wavelengths.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do salmon need to expand their visual range when migrating?
To navigate murky freshwater environments.
To see predators in the ocean.
To communicate with other salmon.
To find food in the dark.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the enzyme discovered in salmon's vision adaptation?
It converts vitamin A1 to vitamin A2.
It increases the number of photoreceptors.
It changes the shape of photopigments.
It enhances the sensitivity to blue light.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main form of vitamin A found in human bodies?
Vitamin C
Vitamin B1
Vitamin A1
Vitamin A2
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