Which of the following would NOT be maximally reabsorbed from the filtrate?
a) water
b) glucose
c) sodium ions
D) urea
e) amino acids
Answer: D) urea
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The microtubules making up the mitotic spindle attach to specialized structures called ____ that are found in the centromere region of the chromosome.
a. nucleosomes b. centrosomes c. kinetochores d. chromatids e. centrioles
You are examining an ecosystem and notice a large bird. When you measure its temperature, you find it to be constant in sun or shade, wind or still air. This indicates the bird is a(n)
A. homotherm. B. ectotherm. C. endotherm. D. positherm. E. thermophile.
When a vesicle fuses with the plasma membrane the contents of the lumen of the vesicle are:
a. Ligands that enter the nucleus. b. Ligands that become the part of the plasma membrane. c. Ligands that are used in cell communication. d. Two of the above. e. Part of the nuclear pore complex.
What is the fate of the majority of the water in xylem sap?
a. It evaporates into the air. b. It is used to make sugars. c. It is used in capturing light energy. d. It becomes part of new plant cells.