Which of the following is one of the principal extracellular cations?
a. Bicarbonate
b. Chloride
c. Phosphate
d. Sodium
Ans: d. Sodium
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The hollow cavity within the blastocyst is the
A) blastula. B) gastrula. C) blastocoele. D) trophoblast. E) ootid.
How do kidneys alter urine concentration?
What will be an ideal response?
The figure illustrates the sacrum. What structure does "C" represent?
A. Coccyx B. Posterior sacral foramina C. Median sacral crest D. Superior articular facet E. Sacral hiatus
A connective tissue fiber refers to a(n) ________, a nerve fiber refers to a(n) ________, and a muscle fiber refers to a(n) ________
A) organelle; entire cell; complex of macromolecules B) entire cell; organelle; tissue C) organelle; entire cell; part of a cell D) complex of macromolecules; part of a cell; entire cell E) complex of macromolecules; entire cell; part of a cell