Describe what happens to the nucleosome during DNA replication
What will be an ideal response?
ANSWER: As DNA prepares to be replicated, the nucleosome must be disassembled so that the DNA
replication machinery can access the DNA template. Almost immediately after DNA is
replicated, the newly replicated DNA assembles into nucleosomes. Because DNA replication
results in the production of two DNA molecules, the nucleosome components must also be
duplicated so that the entire chromosome structure can be duplicated and partitioned into
daughter cells.
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Why do vascular plants need phloem?
A. because they grow very tall B. because not all parts of the plant are photosynthetic
In Noller’s fragment reaction,
a. RNA-met* mimicked the rRNA b. puromycin was used to mimic tRNA c. the 50S subunit was used to test the peptidyl transferase reaction d. digesting proteins eliminated activity e. digesting rRNA did not eliminate activity
Which of these is the end product of the complement system
a. cascade reaction b. convertase 5a c. complement factor 9 d. membrane attack complex
A (colony/habitat/biofilm) is a mixed population of microbes growing together on surfaces.
Fill in the blank(s) with the appropriate word(s).