One method plants use to obtain phosphorus when it is in limited supply is:
A. by roots adhering to soil particles.
B. by roots growing deeper in the ground.
C. by roots associating with certain fungi.
D. by roots using passive uptake methods.
E. by roots binding the phosphorus.
C. by roots associating with certain fungi.
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Which of the following is a hormone that acts on the kidney's collecting ducts, increasing activity of sodium-potassium pumps so more sodium gets reabsorbed?
a. atrial natriuretic peptide (ANP) b. renin c. ADH d. aldosterone
We see a great deal of variation in reproductive strategies in the animal kingdom. Evaluate the basic strategies and trends in egg fertilization and protection in sexually reproducing animals
What will be an ideal response?
A major function of tight junctions is to
a. create strong cell-cell adherence. b. promote the intermixing of proteins between the apical and basolateral surfaces of cells. c. seal the space between adjacent cells to provide, for example, a barrier to sugar diffusion across an epithelial cell layer. d. sort cells on the basis of adhesion during cell migration in embryos.
Which of the following is a prokaryote?
A) Blechnum nudum B) Homo sapiens C) Troglodytes gorilla D) Vibrio cholerae E) Porifera