Which of the following is not a function of the skeletal system?
A) releases stored calcium and phosphorus when the body needs to use them
B) produces blood cells
C) produces muscle cells
D) protects internal organs
Answer: C
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The Na+/K+ pump creates a ____ charge inside the cell and a ____ charge outside the cell
a. negative; negative b. positive; negative c. positive; positive d. negative; positive e. neutral; positive
Experiments that utilize the deletion of a gene are referred to as ____ experiments
a. ablation b. control c. deletion d. knockout e. tinman
Small size, in general, is necessary for all cells, whether prokaryotic or eukaryotic. Why?
a. The surface area to volume ratio limits the size of all cells. b. If cells were larger, they would be eaten by predators. c. Size is limited by electron orbitals. d. They are limited by the size of the ecosystem.
What is the process that can lead to photosynthetic population explosions?
a. Dead zones b. Algal bloom c. Eutrophication d. Water runoff