Question

The structure at the tip of an extending axon is called a growth cone. Which of the following is FALSE about growth cones?

A. They guide their axons to their appropriate synapses.
B. They determine the direction of axon growth on the way to their synapses.
C. The leading edge of a growth cone is called a Lamellipodium.
D. At the decision point, the growth cone decides to stop the axon's growth.
E. Filopodia are slim projections from the cone that help to evaluate an environment before choosing to go there or not.

Answer 1

Growth cones are structures at the tip of extending axons that guide axons to their appropriate synapses and determine the direction of axon growth. The leading edge of a growth cone is called a Lamellipodium and filopodia evaluate the environment.

Step-by-step explanation:

Growth cones are structures at the tip of extending axons that help guide the axons to their appropriate synapses. They determine the direction of axon growth on the way to their synapses. The leading edge of a growth cone is called a Lamellipodium, which is a structure formed by the rapid polymerization of an actin network at the cell periphery. Filopodia are slim projections from the growth cone that help evaluate the environment before choosing to go there or not. Therefore, the correct answer is D. At the decision point, the growth cone decides to stop the axon's growth is FALSE about growth cones.