In early vertebrates, which component of the brain was devoted largely to coordinating motor reflexes?

A. Forebrain
B. Thalamus
C. Midbrain
D. Hindbrain
E. Medulla oblongata


Answer: D

Biology & Microbiology

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Which neurotransmitter stimulates skeletal muscle contraction, slows cardiac muscle contraction rate, and affects

mood and memory?

a. acetylcholine b. epinephrine c. dopamine d. serotonin e. an endorphin

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Within the endoplasmic reticulum, ________ recognizes misfolded or unassembled proteins and transports them back to the cytosol

Fill in the blank with correct word.

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What is a synapomorphy?

A. A character shared by the descendants of a shared common ancestor, distinguishing them from other groups B. A character present in an ancestor, and in only one of its descendant groups C. A character present in two different, unrelated lineages D. A character present in an ancestor, but not in any of its descendants

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Integration of body functions is controlled by

the a. respiratory system. b. nervous system. c. endocrine system. d. defense system. e. nervous system and the endocrine system.

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