Growth cones are defined as a. the influences of neighboring ...

[maychende]

Growth cones are defined as
 
  a. the influences of neighboring cells on differentiation.
 b. attractant chemicals that guide axon growth and inhibit meiosis.
 c. death genes that are expressed when a cell decides to die, leading to the formation of exact replacements for that cell.
  d. swollen ends of axons and dendrites that help the branch reach its synaptic target.

Question 2

Age-related loss in muscle mass appears to begin around the age of _________ years.
 
  a. 25
  b. 30
  c. 75
  d. 90

[diesoon]

Answer to Question 1

d

Answer to Question 2

a