What type of bonding is likely to occur between two water molecules or strands of DNA?
A. covalent
B. hydrogen
C. both hydrogen and covalent
D. ionic
E. both hydrogen and ionic
Answer: B
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Match the following items to the correct phrase.
_______1. The bacteria that cause syphilis and Lyme disease are _______2. are obligate intracellular pathogens that cause diseases such as trachoma, inclusion conjunctivitis, and urethritis. _______3. are photosynthetic. _______4. have no cell walls. _______5. are obligate intracellular pathogens that cause diseases such as typhus and Rocky Mountain spotted fever. a. chlamydias b. cyanobacteria c. mycoplasmas d. rickettsias e. spirochetes
Biosensors involve linking which of the following with electronic circuitry?
A. Microorganisms B. Microbially derived enzymes C. Gene chips D. Both microorganisms and gene chips are used with electronic circuitry. E. Both microorganisms and microbially derived enzymes are used with electronic circuitry. F. Both gene chips and microbially derived enzymes are used with electronic circuitry.
If tall (D) is dominant to dwarf (d), and two
homozygous varieties DD and dd are crossed, then what kind of progeny will be produced? a. all intermediate forms b. all tall c. all dwarf d. 1/2 tall, 1/2 dwarf e. 3/4 tall, 1/4 dwarf
Explain how an F' × F- conjugation can produce a partially diploid bacterial cell
What will be an ideal response?