Which process is the driving force behind the movement of xylem sap upward through the tracheids and vessels in xylem?
1.Bulk flow
2.Osmosis
3.Plasmolysis
4.Transpiration
4
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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.
Diploid cells ____________________
a. have a complete set of homologous chromosomes b. do not have homologous chromosomes c. have 48 chromosomes d. undergo crossing over of homologous chromosomes during mitosis
The largest markets for both U.S. exports and imports in 2011 were
a. China/Japan. b. Western Europe. c. the Pacific Rim countries. d. Canada/Mexico.
Bakers use which of the following organisms to make
dough rise a. Candida albicans. b. Lactobacillus acidophilus. c. Saccharomyces cerevisiae. d. Pseudomonas aeruginosa. e. Giardia lamblia.