What are the three categories of coral reefs and how do they develop?
What will be an ideal response?
Coral reefs that extend from the edges of a coastline out to sea without a lagoon between the reef and the shore are called fringing reefs. Barrier reefs also surround coastlines but are farther off shore and they are separated from the shore by a lagoon. Atolls are circular reefs that exist in deep oceanic waters. Atolls enclose a lagoon and do not surround a land formation. These reefs probably originated on a volcano that either subsided or was submerged by rising sea levels.
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Which of the following statements BEST summarizes structural differences between DNA and RNA?
A. RNA is a protein, while DNA is a nucleic acid. B. RNA is a polymer, but DNA is not. C. DNA contains a different sugar than RNA. D. RNA is a double helix, but DNA is not. E. All the bases in DNA differ from those in RNA.
Which of the following would not provide protection to the epidermis?
A. keratinized epithelium B. simple squamous epithelium C. stratified squamous epithelium D. layers of dead squamous cells
The period of time in which the ventricles contract is known as ventricular ________
Fill in the blank(s) with correct word
Bacterial intoxications differ from bacterial infections of the digestive system in that intoxications
A) are transmitted via contaminated water. B) are more severe. C) have shorter incubation times. D) are treated with antibiotics. E) are accompanied by high fever.