The 8,000 species in this group have countless rows of cilia.
A. cellular slime molds
B. water molds
C. plasmodial slime molds
D. ciliates
Answer: D
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Which of the following describes the exchange of gases between a respiratory surface and the
circulatory system?
a. ventilation b. cellular respiration c. perfusion d. bulk flow e. physiological respiration
Which of the following processes is closely
associated with the normal functioning of the “cystic fibrosis” gene?
a. water osmosis b. sodium - chloride pumping c. protein diffusion d. pH regulation e. polypeptide packaging
The genetic code is comma-free, nonoverlapping, and almost universal
Indicate whether the statement is true or false
Which of the following is characteristic of sponges and hydras?
a. lack of an actual circulatory system b. lack of a reproductive system c. lack of a digestive system d. lack of a muscle system