Cells contain chemical substances called ________ that minimize changes in concentrations of H+ and OH-.
Fill in the blank(s) with the appropriate word(s).
buffers
Cells contain chemical substances called buffers that minimize changes in concentrations of H+ and OH-.
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Hemophilia is caused by a
A. recessive allele on the X chromosome. B. dominant allele on the X chromosome. C. codominant allele on the X chromosome. D. recessive allele on an autosome. E. dominant allele on an autosome.
Which of the following microbes can oxidize ferrous iron while using chlorate or perchlorate as the electron acceptor?
A. Thiobacillus ferrooxidans B. Ferribacterium limneticum C. Dechlorosoma suillum D. Pseudomonas denitrificans
Wheat is a group of grass species that originated in the eastern Mediterranean and are now cultivated worldwide. In comparing wheat to other organisms, how would you evaluate the success of this species on the planet?
A. Examine the diversity of environments in which it is found. B. Examine the total biomass of wheat present on the planet. C. Examine the amount of variation of its genome. D. Examine its ability to grow outside of an agricultural setting. E. All of the answer choices are correct.
It’s finally time to harvest your crop of carrots, turnips, and beets. You’ve been dreaming about roasted vegetables for months, so you grab your gardening gloves and trowel, and head out to your garden. What type of roots are carrots, turnips, and beets?
a. fibrous b. adventitious c. tap d. epiphytic