Atoms of a single element that possess different numbers of neutrons are called:
A. isomers.
B. polymers.
C. ions.
D. isotopes.
E. monomers.
D
You might also like to view...
According to the endosymbiont hypothesis,
a. most of the genes from the endocytosized bacteria moved to the nucleus. b. the host anaerobe became dependent on the endocytosized bacteria. c. the endocytosized bacteria became dependent on the host cell. d. the endocytosized bacteria were all photosynthetic. e. most of the genes from the endocytosized bacteria moved to the nucleus, the host anaerobe became dependent on the endocytosized bacteria, and the endocytosized bacteria became dependent on the host cell.
Which cells are targeted by insulin?
a. skeletal muscle cells b. liver cells c. fat cells d. all of these cells are targeted by insulin e. only one of these cells is targeted by insulin
A directional adjustment of growth in response to environmental stimuli is called ____
a. circadian rhythm b. vernalization c. photoperiodism d. statolith e. tropism
How can cells increase the fluidity of their plasma membrane?
A) a lower proportion of unsaturated fats in the fatty acid portion of phospholipids B) move to colder temperatures C) remove double bonds in the hydrocarbon backbone D) integrating steroid-based lipids like cholesterol in membranes E) shorter phospholipids in the plasma membrane