Surface of the skin, lining of the mouth, throat, rectum, anus, vagina
A. Pseudostratified columnar
B. Simple columnar
C. Simple cuboidal
D. Simple squamous
E. Stratified squamous
F. Transitional
Answer: E. Stratified squamous
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What is gene regulation?
A. Mechanisms that turn on and off mitosis in the cell cycle B. Mechanisms that regulate the replication of DNA C. Mechanisms that regulate which genes get copied D. Mechanisms that turn on and off specific genes to change which proteins are made
The antibiotic streptomycin prevents protein synthesis in prokaryotes. Which cell component would be affected by this antibiotic?
A) ribosome B) cell membrane C) Golgi apparatus D) cell wall
Factors which provide a measure of biodiversity in a particular ecosystem include
A) the total number of species in that ecosystem B) the variability of the individual genes C) the relative abundance of each species D) the number of different habitats being utilized E) All of the choices are correct.
Although the extracellular environment has a high sodium ion concentration and the intracellular environment has a high potassium ion concentration, both must be neutralized by negatively charged molecules
In the extracellular case, what is the principal anion? (a) HCO3– (b) Cl– (c) PO43– (d) OH–