Which of the following proteins is observed exclusively in association with eukaryotic DNA replication?
A) DNA polymerase I
B) DNA gyrase
C) single-strand binding proteins
D) DNA ligase
E) telomerase
Answer: E
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What is the most likely role of the tests in a testate amoeba?
A. Provide motility B. Concentrate nutrients C. Enable adherence to surfaces D. Provide protection
How was the navigation ability of young loggerhead sea turtles studied by Kenneth Lohmann?
a. He placed radio transmitters on the shells of numerous hatchlings and tracked their migration patterns in the Atlantic ocean. b. He genetically engineered turtles so they lacked magnetoreceptors and then studied their behavior compared to a control group. c. He subjected turtles to an electromagnetic field opposite that of Earth's magnetic field, and then tracked the direction the hatchlings swam. d. The loggerhead turtles were injected with magnetite to see what impact it had on their navigation. e. Small magnets were glued to the hatchlings' shells, and their behaviors were monitored.
According to the first law of thermodynamics,
a. the energy of a system may increase if there is a corresponding decrease in energy elsewhere in the universe. b. the amount of energy in the universe is constant. c. chemical reactions do not create or destroy energy. d. energy can change from one form to another. e. all of these are true
Recurring travel between two distinct destinations is
a. migration. b. cyclic emigration. c. emigration. d. immigration. e. cyclic immigration.