In the context of motor development of children, which of the ...

[s.tung]

In the context of motor development of children, which of the following statements is true of activities like rolling over, sitting up, crawling, creeping, walking, and running?
 
  A) These activities are not influenced by environmental factors.
  B) All infants engage in these activities at the same age.
  C) Most infants engage in these activities in the same sequence.
  D) These activities are not related to the genetic code.

Question 2

Every time a neuron fires, it transmits an impulse of the same strength. This occurrence is known as the__________.
 
  A) refraction effect
  B) polarization effect
  C) resting potential
  D) all-or-none principle
  E) Select

[apple]

Answer to Question 1

C

Answer to Question 2

D

[s.tung]

Gracias!

[bdobbins]

Excellent