________ is / are able to degrade infecting bacteriophage DNA, thus protecting the host cell.
A. Protection exonucleases
B. Restriction endonucleases
C. Modification methylases
D. Lysozyme
Answer: B
Biology & Microbiology
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All multicellular organisms have:
A. organs and organ systems. B. specialized and differentiated cells. C. predators. D. mechanisms for cell-cell adhesion.
Biology & Microbiology
Which of the following implies movement with regard for direction?
a. taxis only b. kinesis only
c. migration only d. taxis and migration only e. taxis, migration, and kinesis
Biology & Microbiology
Once an amino acid has been attached to the appropriate tRNA, the tRNA is called a(n) ________, and the amino acid is said to be ________
Fill in the blank with correct word.
Biology & Microbiology
Components of nucleotides are, and how are they connected?
What will be an ideal response?
Biology & Microbiology