Placing a blood cell into a glass of pure water causes the cell to burst. Why does this happen?
a. There is a net movement of water, via osmosis, into the cell.
b. All the water moves via osmosis out of the cell.
c. Net transport of water via active transport occurs.
d. Organelles cannot survive and function in pure water.
A
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The science of ____ explains the origin and persistence of life, and studies the changes in living things
a. nanotechnology b. biology c. pharmacology d. mathematics e. chemistry
Pre-mRNA is found____
a. only in prokaryotes b. in both the nucleus and cytoplasm of eukaryotes c. only in the cytoplasm of eukaryotes d. in both prokaryotes and eukaryotes e. only in the nucleus of eukaryotes
Approximately what fraction of flowering plants is polyploid?
a. 1% b. 10% c. 25% d. 50% e. 80%
Figure 1.3
What is represented in frame 5 of Figure 1.3, illustrating the levels of life's organization?
A. Atom B. Tissue C. Molecule D. Organ E. Cell