Large external polysaccharides are degraded by bacteria and archaea using ________ ________, which they secrete outside the cell.
Fill in the blank(s) with the appropriate word(s).
hydrolytic enzymes
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How are the tails and heads of membrane phospholipids oriented in their environment?
A. The hydrophobic heads are oriented towards each other and the hydrophillic tails are oriented towards the extracellular fluid and the intracellular fluid. B. The hydrophillic tails are oriented towards each other and the hydrophobic heads are oriented towards the extracellular fluid and the intracellular fluid. C. The hydrophobic tails are oriented towards each other and the hydrophillic heads are oriented towards the extracellular fluid and the intracellular fluid. D. The hydrophillic heads are oriented towards each other and the hydrophobic tails are oriented towards the extracellular fluid and the intracellular fluid.
The following are basic building blocks of biopolymers. Match
the building blocks with the statements 103–110. a. amino acid b. glucose c. glycerol d. fatty acid e. nucleotide E 103. the basic unit of proteins E 104. the basic unit of DNA E 105. the basic unit of RNA E 106. the basic unit of cellulose E 107. the basic unit of glycogen E 108. the basic unit of starch M 109. the monomers of a polypeptide chain M 110. Which two units combine in various ways to form lipids? a. a and b b. a and c c. b and c d. b and d e. c and d
All of the following pertain to hypochlorites except
A. they are found in iodophors. B. they are used to disinfect dairy, restaurant, and medical equipment. C. they release hypochlorous acid in solution. D. they are found in common household bleach. E. they cause denaturation of enzymes.
The term sapiens in Homo sapiens represents the ____
a. class b. order c. family d. genus e. species