An organism that cannot grow without oxygen is a(n)
A. obligate aerobe.
B. aerobe.
C. microaerophile.
D. facultative anaerobe.
E. obligate anaerobe.
Answer: A
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Freshwater fish will (select all correct choices):
A. lose electrolytes across the skin and gills. B. gain water across the skin and gills. C. gain electrolytes across the skin and gills. D. gain electrolytes from drinking. E. lose water across the skin and gills.
After the cell enters which phase does division seem inevitable?
a. G1 b. G2 c. S d. Cytokinesis e. Cells are always preparing for division.
Which of the following is the best description of the events of anaphase I?
A) Half of the chromosomes inherited from the mother go to one pole along with half of the chromosomes inherited from the father. B) Sister chromatids separate and the daughter chromosomes migrate to opposite poles. C) Homologous chromosomes randomly separate and migrate to opposite poles. D) All of the chromosomes inherited from the mother go to one pole of the cell, and all of the chromosomes inherited from the father go to the other pole.
What does the pharynx open into?
A) the esophagus B) the epiglottis C) the trachea D) the larynx