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.
Answer: e
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Which of the following is NOT a common characteristic of both mitochondrial and chloroplast genomes?
A. Composed of a double stranded chromosome. B. Composed of a single circular chromosome C. Has a small genome. D. Chloroplast genome is larger than the mitochondrial genome.
You are walking along the beach and see the remains of an unknown animal washed up on shore. You examine its characteristics and see that it is gelatinous, transparent, bilaterally symmetric, and lacks tentacles. You provisionally identify its phylum according to which choice?
a. Gelatinous body rules out Cnidaria. b. Lack of tentacles rules out Cnidaria. c. Bilateral symmetry rules out Platyhelminthes. d. Transparent body rules out Ctenophora.
The Murchison meteorite was a significant discovery for the study of the origin of life, because it ________
A) contained self-replicating organisms B) contained carbon, hydrogen, nitrogen, and oxygen C) contained significant amounts of amino acids D) contained short lengths of RNA E) descended through the atmosphere slowly enough that friction was negligible
Secretes steroid hormones that affect secondary sex characteristics
(A) testis (B) Lining of small intestine (C) Anterior pituitary (D) thyroid (E) pancreas