To counter the ingestion of excess salts, marine teleost fish have specialized cells in their gills that pump _____ ions into the surrounding seawater
As these ions leave the fishes'
bodies, they create an electrical gradient that is balanced when _____ ions leave their bodies
as well.
A. chloride; sodium
B. potassium; magnesium
C. calcium; sodium
D. sodium; chloride
E. magnesium; potassium
A
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The epsilon (?) subunit of DNA polymerase III of E. coli has exonuclease activity. How does it function in the proofreading process? The epsilon subunit _____
A) removes a mismatched nucleotide B) excises a segment of DNA around the mismatched base C) can recognize which strand is the template or parent strand and which is the new strand of DNA. D) adds nucleotide triphosphates to the end of the growing DNA strand
Imagine that you are studying a new species. As you examine the circulatory system, you note that a four-chambered heart drives the blood in two directions simultaneously; to the body and to the lungs. What can you conclude about this animal? Check all that apply.
_____ It has double circulation. _____ It has hemi circulation. _____ It has single circulation. _____ The circulatory route is similar to that of a trout. _____ The circulatory route is similar to that of a snake. _____ The circulatory route is similar to that of a gorilla.
incinerator
What will be an ideal response?
Which term best describes the water in a sugarwater solution?
A) product B) reactant C) solute D) solvent