Exam 3: What Are the Nervous Systems Functional Units

Membranes of a cell are made of special molecules called:

The code for the synthesis of proteins is stored in:

Structurally, the simplest type of neuron is a(n):

_____ are also called association cells because they link up sensory and motor neurons.

What is selective breeding, and how can it be used to select for specific traits? Give an example.

Because the gene that leads to Huntington disease is dominant, a child who has one parent with Huntington disease has a _____ chance of developing the disorder.

Match each cell structures to its name. _____ 1. nuclear membrane _____ 2. axon _____ 3. Golgi body _____ 4. cell membrane _____ 5. tubules _____ 6. microfilaments _____ 7. dendrite _____ 8. nucleus _____ 9. endoplasmic reticulum _____ 10. lysosomes _____ 11. dendritic spine _____ 12. mitochondrion _____ 13. intracellular fluid

The _____ is the core region of the cell that contains the nucleus.

Which of the following is NOT an interneuron?

Which type of neurons transmit afferent sensory information from the retina to the brain?

_____ means having two identical alleles for the same trait.

List the internal components of a cell.

Ependymal cells are associated with the:

Which of the following is NOT one of the ways in which epigenetic mechanisms can influence the expression of a particular gene?

DNA is composed of four nucleotide bases. Which one of the following is NOT a nucleotide base?

What are the three basic subdivisions of a neurons?

The blood-brain barrier is made up of _____ attached to neurons and blood vessels.

In Huntington disease, as the number of CAG repeats on the HTT (huntingtin) gene exceeds 40, the:

The cell membrane is important because it:

_____ help generate myelin in the central nervous system, whereas _____ help generate myelin in the peripheral nervous system.