Hagfishes and lampreys differ from other fishes because they lack ________
Fill in the blank(s) with correct word
jaws
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All of the following are glial cells except
A) interneurons. B) oligodendrocytes. C) astrocytes. D) Schwann cells. E) both choices A and D
A frog sees a fly and immediately sticks his tongue out to catch it. Which type of cell transmitted the visual signal from
his eye to his brain?
a. afferent neuron b. efferent neuron c. interneuron d. motor neuron e. Schwann cell
Living at high altitudes can cause ____ as a respiratory adaptation
a. elevated erythrocyte count b. decreased number of alveoli c. decreased number of lung capillaries d. hemoglobin molecules with less affinity for O2 e. decreased erythrocyte count
Which molecule provides the energy for the assembly of new nucleotides into a DNA strand during DNA replication?
a. ATP b. the nucleotide itself c. NADH d. primers e. DNA ligase