All mutations are harmful to the cell.
Answer the following statement true (T) or false (F)
False
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Transpiration water loss occurs mostly through which of the following structures?
A. pores B. stomata C. epidermal cells D. guard cells E. vessels
An organism's niche can be described in terms of abiotic and biotic factors
Indicate whether the statement is true or false
Outside the protein sheath, many viruses have a(n) ________ made of protein, lipid, and carbohydrate.
Fill in the blank(s) with the appropriate word(s).
Stromatolites are ___________.
a. layered rocks formed by communities of prokaryotes, fossils of which represent the oldest known prokaryotes b. early prokaryotic fossils found in sediments around hydrothermal vents c. protocells that form when lipids assemble into a bilayer surrounding organic molecules d. a surface-coating colony of one or more species of prokaryotes e. nitrifying archaeans that are extremely abundant in the oceans