Birds utilize countercurrent mechanisms to optimize diffusion of O2 across their respiratory surfaces
Indicate whether the statement is true or false.
T
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A slime layer gives bacterial cells greater pathogenicity than a capsule.
Answer the following statement true (T) or false (F)
____________________ traits are controlled by two or more genes and significantFill in the blank(s) with the appropriate word(s)
When comparing viruses and bacteria, which one of the following statements is CORRECT?
A) Viruses are larger than bacteria. B) Viruses are pathogens; bacteria are decomposers. C) Viruses have membrane-bound organelles; bacteria do not have membrane-bound organelles. D) Viruses and bacteria are both able to reproduce on their own. E) Viruses and bacteria both contain genetic material.
according to the fluid-mosaic model of membrane structure
A. proteins make up the bulk of the membrane B. proteins float inside or within the phospholipid bilayer C. only lipids are found in the membrane D. cholesterol is the main constituent of the membrane