DNA of thermophiles is stabilized by binding of special nucleoid-associated proteins.
Answer the following statement true (T) or false (F)
True
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An effective means used early in the 19th century to clear water of the majority of bacteria was the use of
A. chlorine. B. iodine. C. alcohol. D. sand filters
Which of the following statements is correct?
a. Allopatric populations look different and use different resources. b. Allopatric populations look different and use the same resources. c. Allopatric populations look the same and use different resources. d. Allopatric populations look the same and use the same resources. e. Sympatric and allopatric populations both look the same and use the same resources.
During an active HIV infection, which cell type numbers drop significantly?
a. helper T cells b. B cells c. plasma cells d. mast cells e. cytotoxic T cells
Imagine that you have been hired as a chemist and your first task is to examine a newly discovered atom. The paperwork you are given states that its atomic number is 110. What does this mean?
A) The atom contains 55 electrons. B) The atom contains 110 protons. C) The atom contains 55 protons and 55 neutrons. D) The atom is an isotope.