Death of a tissue, often caused by ischemia, is termed:
What will be an ideal response?
an infarct
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Which type of epithelium is found in the lining of the gut?
a. simple squamous epithelium b. stratified squamous epithelium c. cuboidal epithelium d. simple columnar epithelium e. simple pseudostratified columnar epithelium
What is the fate of the extra X chromosome in females?
a. Both X chromosomes are maintained normally. b. The extra X chromosome is degraded after each cell division. c. The extra X chromosome condenses. d. The extra X chromosome duplicates. e. The extra X chromosome is deleted after fertilization and is not present in the remainder of cells in the body.
The interval before the onset of DNA replication is
called Chapter 9 How Cells Reproduce 79 a. the G1 stage. b. the G2 stage. c. the M stage. d. the S stage. e. all of these stages
A group of single-cell organisms collected from the ocean was brought into the lab for examination. The lab assistant was concerned that the water had become full of toxic waste products and so added clean water to the culture. All of the organisms died,
and when she looked at them under the microscope, all she could see were bits and pieces of them scattered throughout the water. What likely happened? A) She added water that was hypotonic to the culture of organisms, and they ruptured. B) She added seawater to which she had added too much salt, and they ruptured. C) She added water isotonic to the organisms, causing too much water to move in and out of the organisms, and they ruptured. D) She added too little salt to the seawater she added, and the organisms all lost too much water and shriveled up.