If red bone marrow can be surgically removed from an individual, what would happen to that person in terms of the formed elements of the blood?
What will be an ideal response?
Red bone marrow produces stem cells, which are cells that have not matured or differentiated and that give rise to other cell types. The stem cells from bone marrow give rise to all red and white blood cells and platelets. If red bone marrow did not function properly or was removed, stem cells would not be produced, and therefore, none of the other essential cells known as formed elements would be produced.
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A new flower species has a unique photosynthetic pigment. The leaves of this plant appear to be blue-green. What wavelengths of visible light does this pigment reflect?
A. green, red, and violet B. green and blue C. red, yellow, and green D. blue and violet E. red and yellow
Which molecule is our primary source of
energy?
a. protein b. fatty acids c. carbohydrates d. nucleic acids e. triglycerides
Which of the following procedures results in the excretion of urine at the base rather than at the tip of the penis?
A. Subincision B. Supercision C. Excision D. Infibulation
Plasma from a sick mouse is filtered across a membrane that has a 200 nm pore size. If the filtrate is still infectious when injected into a healthy mouse, then the pathogen is most likely a(n):
A. parasitic worm B. bacterium C. archaean D. virus E. fungus