The wrapping around an object movement that is performed by the hand is called
a. prehensile.
b. opposable.
c. coordinated.
d. circumduction.
e. tubing.
A
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Filopodia that are supported by microtubules are known as
A. reticulopodia. B. tubulopodia. C. micropodia. D. lophopodia. E. axopodia.
Which of the following statements about bacteria is false?
a. A small percentage of bacteria are pathogenic. b. Some bacteria can photosynthesize. c. Bacteria are important decomposers. d. Bacteria are not cellular and are sometimes not classified as life forms. e. Bacteria convert atmospheric nitrogen into ammonia and then nitrates that can be used by plants.
Which of the following is a sex-linked disorder?
A. hemophilia B. Huntington's disease C. hypercholesterolemia D. Tay-Sachs disease E. cystic fibrosis
An E. coli culture that has been growing at 37°C is moved to 25°C. Which of the following changes must be made in its plasma membrane?
a. The number of phosphate groups must increase. b. The viscosity must increase. c. The number of saturated chains must increase. d. The number of unsaturated chains must increase. e. No changes are necessary