Rods are to ____ as cones are to ____.
a. the periphery; the fovea
b. red; blue
c. vertebrates; invertebrates
d. reading text; reading road signs
Question 2
Why is the Aplysia such a popular animal for single-cell studies of learning?
a. Aplysia have neurons that are virtually identical from one individual to another.
b. Aplysia have greater learning abilities than other invertebrates.
c. Aplysia have short-term learning but not long-term learning.
d. Aplysia have only two neurotransmitters, one excitatory and one inhibitory.
Relationships between direction of flow of blood and water or air in different vertebrates.
Adult blue whale from the eastern Pacific Ocean
Two metal rods, one silver and the other copper, are both attached to a steam chamber, with a ...
An antigen-presenting dendritic cell (blue) interacting with a T cell (yellow)