A Prokaryotic Cell

question 48

Multiple Choice

A prokaryotic cell:

• A)Has a nucleus
• B)Does not have a nucleus
• C)Has a cell wall made of chitin
• D)Is at least ten micrometers in diameter
• E)Has membrane-bounded organelles

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Definitions:

Ascending Tracts

Nerve pathways that go upwards in the spinal cord and carry sensory information from the body to the brain.

Descending Tracts

Pathways in the spinal cord that transmit motor commands from the brain to the body, controlling voluntary movements.

Spinal Cord

The long, thin, tubular structure made from nervous tissue that extends from the brainstem down the vertebral column, conducting nerve impulses between the brain and the rest of the body.

Patellar Reflex

A reflex action that causes the lower leg to kick forward when the patellar tendon just below the kneecap is tapped; a measure of the function of the nervous system.