Which one of the following controls the amount of light entering the eye?
A. iris
B. pupil
C. cornea
D. lens
A
You might also like to view...
Some diseases can result from defective transport across the membrane. For example, cystic fibrosis results from a chloride ion transporter that does not function. Which of the following would be affected when this transporter does not function?
A. the chloride concentration gradient B. the electrical gradient of the cell C. Both a and b D. Neither a nor b
Describe the relationship between telomeres and aging
What will be an ideal response?
Which hormone does NOT have reproductive functions?
a. FSH b. LH c. prolactin d. oxytocin e. TSH
You are studying a bacterium found in the normal intestinal flora of humans and most other mammals, and are doing an experiment to determine the optimum growth rate of this bacteria. You have inoculated five nutrient broths, and are incubating one broth at each of the following temperatures: 5oC, 25oC, 38oC, 42oC, and 55oC. At which temperature would you predict to see the optimum growth rate?
5oC 25oC 38oC 42oC 55oC