In mammals and some reptiles, the coelom is divided into smaller cavities that enclose the lungs, heart, and gut. What are these cavities called?
A. pleural, pericardial, and peritoneal cavities
B. thoracic, pleural, and pericardial cavities
C. pleural, pericardial, and cardial cavities
D. perithoracic, peritoneal, and pericardial cavities
A. pleural, pericardial, and peritoneal cavities
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Some enzymes build new molecules, and others metabolize or break them down. For example, digestive enzymes such as peptidases and lipases break down proteins and lipids, respectively. Genetic information is encoded in the DNA for proteins, many of which are enzymes. This means that a harmful or lethal genetic mutation often results in a malformed enzyme that cannot function. If a person suffers a mutation that results in malformed peptidase, what problem would you expect them to would have?
a. unable to swallow medication properly b. high body temperature c. unable to digest protein d. unable to metabolize fats
Some invertebrates can move gases across
their cell's membrane by ___ through interstitial fluid
a. active transport b. facilitated diffusion c. bulk transport d. simple diffusion e. osmosis
Predict what would happen as the entropy of a system approaches 100%
A) All motion would stop. B) Randomness would become maximized. C) Order would become maximized. D) Heat would decrease.
Which of the following viruses is transcribed from RNA to DNA to RNA during the replication cycle?
a. dsDNA viruses b. +RNA viruses c. -RNA viruses d. Retroviruses