Using polyethylene glycol (PEG), early G1 phase cells were fused with S phase cells. Of the following events, which would you expect to be induced in the G1 cells as a result of the fusion?
A) cytokinesis
B) condensation of chromosomes
C) DNA replication
D) mitosis
E) spindle fiber formation
C) DNA replication
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A crucial step in the regulation of most bacterial genes occurs
A) at transcription initiation. B) during RNA splicing. C) during nuclear export of mRNA. D) when nonsense suppressors translate mRNAs.
This scientist is considered to be the father of MICROBIOLOGY because he was the first to visualize microbes using his microscope:
c. Louis Pasteur b. Lazzaro Spallanzani c. Antoine Van Leeuwenhoeck d. Charles Darwin
Anaphylactic shock
A. occurs when the allergen has entered the bloodstream. B. is an immediate allergic reaction. C. is characterized by a sudden and life-threatening drop in blood pressure. D. All of these are true. E. None of these are true.
Eukaryotic cells are different from prokaryotic cells in that eukaryotic cells:
A) exhibit greater intracellular complexity, such as the presence of multiple organells B) have their nuclear DNA is in linear chromosomes rather than a single loop of DNA C) gave rise to the evolution of the multicellular kingdoms containing plants, animals, and fungi D) all of the above