The bony movable ?ap that covers the gills and gill slits is called the
a. operculum.
b. cranium.
c. tympanum.
d. colon.
b
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Free energy change is a measure of the rate of reaction.
Answer the following statement(s) true (T) or false (F)
The environment surrounding the roots of mangrove trees provides a sheltered nursery for the larvae and juvenile crabs, shrimp, and fish
Indicate whether the statement is true or false
What human activities release the majority of the carbon dioxide found in the atmosphere?
A) exhaling (cellular respiration waste products) B) adding decomposing garbage to landfills C) burning wood for cooking fires D) burning fossil fuels
Which method of transport is responsible for low concentrations of sodium and high concentrations of potassium within the cells of the body?
a. simple diffusion b. facilitated diffusion c. vesicular transport d. active transport