What is the first step in the duplication of a DNA molecule?
a. nucleic acids are added
b. DNA unwinds
c. prophase begins
d. RNA binds
b
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The muscle seen most anteriorly on axial CT images of the neck is the platysma.
Answer the following statement true (T) or false (F)
Answer the following statements true (T) or false (F)
1. Sensory neurons are also called efferent neurons. 2. One of the most common types of brain tumors develops from glia cells. 3. Astrocytes produce myelin for the cells of the central nervous system. 4. Microglia help protect the brain by eating microbes that may enter the brain. 5. Oligodendrocytes are important in the formation of the blood brain barrier.
The ________ and the middle nasal conchae are thin scrolls of ethmoid bone that project into the nasal cavity.
Fill in the blank(s) with the appropriate word(s).
The type of neurotransmitter or hormone that binds to receptors on smooth muscle plasma membranes determines the response of the muscle
Indicate whether the statement is true or false.