Szostak and colleagues found that a ribozyme found in the human genome was related to a similar enzyme in human
hepatitis delta virus (HDV). In order to identify this ribozyme, they:
A. searched the published human genome sequence for HDV sequences.
B. searched the published human genome sequence for ribozyme sequences.
C. incubated HDV RNA and evaluated the sample for ribozyme activity.
D. incubated human RNA and evaluated the sample for ribozyme activity.
D
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The uptake of DNA released from a cell is ________, while transfer of DNA with cell-to-cell contact would most likely result in ________
A) transformation / conjugation B) transduction / conjugation C) conjugation / transformation D) transformation / transduction
A tendon or ligament is made up principally of ________ tissue
Fill in the blank(s) with correct word
________________ in the skin functions as a sunscreen, absorbing ultraviolet (UV) radiation that could damage DNA and other biological molecules.
Fill in the blank(s) with the appropriate word(s).
________ cells in leaves are specialized for photosynthesis
A) Stomata B) Mesophyll C) Vein