The lens:
A) is the transparent outer membrane of the eye that covers the pupil and iris.
B) allows one to focus on objects at different distances.
C) allows light initially to enter the eye.
D) controls the amount of light entering the eye.
Answer: B
Rationale: The lens is a clear structure that focuses light onto the back of the eye. Changing the shape of the lens allows you to focus on objects at different distances. This process is known as accommodation.
You might also like to view...
"Insects make me itch. My brother collects them; he is 5 feet 10 inches tall. That's my favorite number. I dance and draw." Such speech illustrates which of the following symptoms of schizophrenia?
A) loose associations B) catatonia C) avolition D) restricted affect
In class you saw a video about cultural differences between China and North America. Which of the following was highlighted?
a. Chinese children were more likely to share their toys in public than in private, while North American children were equally likely to do so in both contexts b. North American children were more likely to question rules that they thought were unfair when taught a new game involving passing balls around quickly c. Chinese children were more likely to show modesty by saying that they had not done a good deed that they had actually done d. North American children were more likely to show off by saying they had done better on a competitive video game than their classmates