Bacterial cells have no nucleus or organelles and reproduce easily through a process known as ________.
A. chromatin
B. eukaryosis
C. interphase
D. binary fission
Answer: D
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Which of the following reduces alveolar surface tension?
A) gas B) surfactant C) water D) mucus
A nerve cell membrane becomes depolarized as a result of
A. Na+ ion channels being opened and Na+ ions diffusing into the cell. B. the relative ease with which K+ diffuses into the nerve cell. C. Ca+2 leaving the nerve cell. D. Na+ being prevented from passing through the membrane.
Which of these is NOT a nerve of the brachial plexus?
A) musculocutaneous nerve B) radial nerve C) ulnar nerve D) median nerve E) phrenic nerve
Cells contain pairs of chromosomes. since they are the same size and shape and also code for the same information, each pair of chromosomes is called which of the following?
a) diploid chromosomes b) sex chromosomes c) autosomes d) homologous chromosomes