Hagfishes and lampreys differ from other fishes because they lack ________

Fill in the blank(s) with correct word


jaws

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology