DNA moves within an electric field because it
A) is negatively charged.
B) is positively charged.
C) makes up chromosomes, which are slightly electromagnetic.
D) can possess different charges (positive or negative), depending on its base sequence.
A
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Given the locally unwound double strand above, in which direction does the RNA polymerase move while transcribing DNA?
A) ? along the template DNA strand B) ? along the template DNA strand C) ? along the nontemplate DNA strand D) ? along the nontemplate DNA strand E) ? along the double-stranded DNA
How is the myosin associated with vesicle transport different from the myosin found in muscle cells?
A. The tail is shorter. B. There is only one myosin head. C. It doesn't change conformation. D. It doesn't need ATP.
Viruses infect every organism that has been investigated for their presence. However, viruses can only replicate in
A. very limited conditions, depending on their capsid type. B. a very limited manner if they are a retrovirus. C. a very limited manner depending on their envelope capability with the host's cell membrane or cell wall. D. their lytic stage outside the host cell membrane. E. a very limited number of the host's cells.
Emerging diseases ____
a. are related to lifestyle factors b. are caused by poor diet c. are never caused by viruses d. are caused by pathogens that until recently had limited impact on human health e. include obesity and type 2 diabetes