Multiple Choice
In biology, which of the following best defines a cell?
20
views
1. Introduction to Biology
Introduction to Biology
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How does human vision typically differ at night compared to during the day?
A
The pupil constricts to limit the amount of light entering the eye.
B
Visual acuity increases and colors appear more vivid.
C
Cone cells become more active, enhancing color discrimination.
D
Color vision is reduced and vision relies more on rod cells.
Verified step by step guidance1
Understand the two types of photoreceptor cells in the human retina: rod cells and cone cells. Rod cells are highly sensitive to low light levels and are responsible for night vision, while cone cells function in bright light and are responsible for color vision.
Recognize that during the day, cone cells are active because they require bright light to function. This allows for high visual acuity and the ability to perceive a wide range of colors.
At night or in low-light conditions, rod cells become the primary photoreceptors because they are more sensitive to dim light. However, rod cells do not detect color, which is why color vision is reduced in the dark.
Note that the pupil dilates (widens) in low-light conditions to allow more light to enter the eye, enhancing the sensitivity of rod cells to the available light.
Conclude that human vision at night relies more on rod cells, leading to reduced color perception and lower visual acuity compared to daytime vision, which relies on cone cells for sharpness and color discrimination.
1:28mWatch next
Master Introduction to Biology Channel with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Introduction to Biology practice set
Problem sets built by lead tutorsExpert video explanations