Albumin proteins in human blood function
A) to initiate blood clotting.
B) to transport oxygen to target cells.
C) to maintain blood volume.
D) as electrolytes.
E) to attack foreign organisms that enter the blood.
C
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The central nervous system (CNS) may become infected through the
A. bloodstream. B. nerves. C. extensions from bone. D. ventricles. E. bloodstream, nerves AND extensions from bone.
Which statement about microscopes is true?
a. Transmission electron microscopes show details of the internal structures of cells. b. Electron microscopes are best for viewing live cells because of high resolving power. c. Light microscopes require the use of stains which typically kill cells. d. Dissecting microscopes have a higher magnification than light microscopes.
Which description best illustrates the product of a chemical reaction?
a. It is joined by an ionic bond only. b. It is always in equilibrium with the reactants. c. It is the substance that initiates the reaction. d. It is generally written on the left side of the equation. e. It is generally written on the right side and is the substance generated by the reaction.
Protobionts are vesicle-like assemblages of abiotically-produced organic polymers
______________ Indicate whether the statement is true or false.