It is essential for heart muscle cells to beat in a coordinated fashion. The cell junctions that would best facilitate this are
A) basal bodies.
B) anchoring junctions.
C) tight junctions.
D) gap junctions.
Answer: D
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In 1927, the U.S. Supreme Court upheld the right of states to use ____________________ as a means of preventing reproduction by those deemed "unfit."
Fill in the blank(s) with correct word
Which of the following describes an organ?
a. groups of similar cells that perform specialized functions b. composed of at least two types of tissues c. structure that contains DNA d. a thin bilayer that separates individual cells
Which of the following is likely to be true, based on the following cladogram?
1.Amphibians and lungfishes are sister groups.
2.Amphibians and amniotes both have four limbs and a swim bladder or lungs.
3.Amphibians and lungfishes both have four limbs and a swim bladder or lungs.
4.All of the groups listed have a backbone and a skull.
Kidney failure or end-stage renal disease is most commonly associated with
A) diabetes and high blood pressure. B) a low-carbohydrate diet. C) low blood pressure. D) a low-protein diet. E) a high-fat diet and low blood pressure.