Which component of the blood is most important for clotting?
A. plasma
B. leukocytes
C. erythrocytes
D. platelets
E. All of the choices listed for this question are important for clotting.
D. platelets
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O2 is transported from air in the lungs into the blood through the process of ____
a. active transport b. simple diffusion c. facilitated diffusion d. osmosis e. active transport
Which one of the following characteristics is NOT true for all living cells?
a. All cells are derived from preexisting cells. b. All cells contain a nucleus. c. All cells utilize organic fuel molecules as energy sources for their activities. d. All cells respond to outside stimulation. e. All cells possess a plasma membrane.
In what way are prokaryotic and eukaryotic cells different?
a. A prokaryotic cell has a cell wall, but a eukaryotic cell does not. b. A prokaryotic cell does not have a cell wall, but a eukaryotic cell does. c. A prokaryotic cell has a capsule, but a eukaryotic cell does not. d. A prokaryotic cell does not have a capsule, but a eukaryotic cell does.
A mutation that involves one or a few nucleotides is called
a. A mutagen b. An inversion c. A point mutation d. A translocation