A slow-twitch muscle fiber
A. uses ATP quickly in short, fast contractions.
B. has many capillaries.
C. is low in myoglobin content.
D. works aerobically.
E. All of the answer choices are correct.
B. has many capillaries.
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How did mitochondria and chloroplasts arise in eukaryotic cells?
A. Via the endomembrane system that enfolded in such a way as to create mitochondria and chloroplasts B. Via binary fission, where bacteria divided to create mitochondria and chloroplasts C. Via the endomembrane system that engulfed mitochondria and chloroplasts D. Via endosymbiosis, where mitochondria and chloroplasts were independent prokaryotic organisms that were engulfed by a larger cell
The members of this lineage of Cnidarians exist only as polyps as adults. Many build calcium
carbonate exoskeletons and have a mutualistic relationship with photosynthetic protists
a. Hydrozoa b. Scyphozoa c. Trematoda d. Cubozoa e. Anthozoa
Years before Schwann’s pronouncement that a cell
has a life of its own even as a component of a multicellular organism, the cell nucleus had been discovered by a. Robert Hooke. b. Robert Brown. c. Theodor Schwann. d. Rudolf Virchow. e. Anton van Leeuwenhoek.
Cells that have a nucleus are referred to as ________ cells; those that lack a membrane-bound nucleus are called ________ cells
Fill in the blank(s) with correct word