Which of the following is TRUE about the embryology of the central nervous system?

Which statement correctly describes the function of Ena/VASP proteins, which are anti-capping proteins?

Molecules that function as attractive guidance cues for axons growing in the nervous system are always secreted diffusible molecules, whereas repulsive guidance factors are typically bound to the ECM. True or false?

Which of the following is TRUE about apical radial glia?

In this experiment axons from nasal and temporal retina are plated on extracted cell membranes from anterior (a, black boxes) or posterior (p) tectum (white boxes). In some cases (marked with *) membranes are boiled before plating. What is the key finding from this experiment, and why?  

Which of the following is NOT TRUE about BMP signaling in neural development?

Gyres are the ________ patterns found in major oceans.

Scientists often depict their understanding of an organism’s evolutionary ancestry in diagrams known as ________.

Which is the most important molecule in an ecosystem?

The Earth’s atmosphere is mostly composed of _______.