The beating flagellae of ____ maintain a constant flow of water through sponges
a. amoeboid cells
b. choanocytes
c. sperm
d. porocytes
e. pinacoderm
ANSWER: b
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Cheetahs are specialized hunters that stalk Thompson gazelles. This is an example of a ________ relationship.
A. commensalism B. mutualistic C. parasitic D. predator-prey
The organisms that causes toxic shock syndrome is ________.
A. Lactococcus lactis B. Streptococcus pneumoniae C. Staphylococcus aureus D. Staphylococcus epidermidis
Which of the following represents the correct sequence of cell types through which an electrical signal would pass in a reflex arc?
A. sensory neuron ? interneuron in the CNS ? motor neuron B. motor neuron ? interneuron in the PNS ? sensory neuron C. sensory neuron ? motor neuron ? interneuron in the CNS D. motor neuron ? sensory neuron ? interneuron in the PNS E. sensory neuron ? motor neuron ? interneuron in the CNS
What is another term for an identifiable structure known as the microtubule organizing centre (MTOC) of an animal cell?
a. a cell plate b. a centrosome c. a kinetochore d. a centromere