Which two means of birth control are most similar in the way they prevent pregnancy?
a. tubal ligation and IUDS
b. oral contraceptives and spermicides
c. tubal ligation and condums
d. oral contraceptives and hormone patch
Ans: d. oral contraceptives and hormone patch
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If animals were unable to produce pectin, what effect would this have on their epithelial tissues?
A. It would have no effect on epithelial tissue structure or function. B. Epithelial cells would be unable to adhere to one another. C. Epithelial cells would be unable to communicate with one another. D. Epithelial cells would be unable to adhere to the extracellular matrix. E. Epithelial cells would be unable to form organized sheets of cells.
The five reactions listed below occur during the noncyclic
pathway of ATP formation. Use them to respond to statements 85–89. a. reduction of NADP+ b. phosphorylation of ADP c. photolysis of water d. oxidation of chlorophyll e. reduction of chlorophyll D 85. This process releases electrons to fill “holes” in chlorophyll in noncyclic ATP formation. D 86. When light energy is absorbed by a leaf, the first result will be this. D 87. The final step that occurs during noncyclic ATP formation is this. M 88. High-energy phosphate bonds are formed during this process. D 89. Oxygen is produced by this process.
How does chemotherapy kill cancer cells, and why might it also result in hair loss and nausea?
What will be an ideal response?
Why can safranin not be used as the counterstain in acid fast staining?
What will be an ideal response?