Which part of the respiratory system is composed of skeletal muscle?
A. trachea
B. larynx
C. glottis
D. lungs
E. diaphragm
Answer: E
Biology & Microbiology
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Chemical mutagens often act by altering the
A. alkyl groups of the nucleobase. B. nucleobase sequence. C. number of binding sites on the nucleobase. D. hydrogen bonding properties of the nucleobase.
Biology & Microbiology
The only reptiles that have four-chambered hearts, like mammals do, are the ________
a. tuataras b. lizards c. crocodilians d. tortoises
Biology & Microbiology
Abundant quantities of FSH can cause
a. identical twins. b. fraternal twins. c. severe abdominal pain from a strong period. d. bladder control problems. e. all of these.
Biology & Microbiology
The transfer of DNA into eukaryotic cells is known as ________
A) transformation B) transduction C) transfection D) transcription E) translation
Biology & Microbiology