Which statement with regard to pore spaces is false?
a. Minerals are removed from soil via leaching.
b. Water is held in the smaller pores, and air is found in the larger pores.
c. They occupy approximately 50% of a soil's volume.
d. They typically contain more carbon dioxide than found in the atmosphere.
e. Immediately after a heavy rain, most pore spaces remain filled with air.
e
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An mRNA that contains the coding sequence for two or more structural genes is called a
A. polyintronic mRNA. B. polyextronic mRNA. C. polycistronic mRNA. D. polyexpressive mRNA. E. polyrepressor mRNA.
Four of the five answers listed below are characteristics of life. Select the exception
a. ionization b. energy usage c. reproduction d. growth e. cellular organization
Which kind of T cell is most important in the removal of cancer cells or virally infected cells from the body?
A. memory T cells B. helper T cells C. cytotoxic T cells D. suppressor T cells
How is the V gene promoter, which is inactive in immature lymphocytes, activated?
What will be an ideal response?