What is a pyrimidine dimer?
A) A hydrogen bond between adjacent pyrimidines
B) An electrostatic bond between adjacent pyrimidines
C) An ionic bond between adjacent pyrimidines
D) A covalent bond between adjacent pyrimidines
D) A covalent bond between adjacent pyrimidines
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Cohesins are multisubunit protein complexes that
A) hold sister chromatids together. B) ensure that proper chromosome arm length is maintained. C) allow easy karyotyping. D) allow replication of chromosome ends.
Aldosterone is responsible for increasing the reabsorption of sodium
____________________ Indicate whether the statement is true or false.
Which of the following is NOT true about invasive species?
A. Invasive species generally reproduce rapidly. B. Invasive species are the key living species on which the community depends for survival. C. Invasive species are without any natural enemies in a new environment. D. The zebra mussel is an example of an invasive species. E. Asian carp is an example of an invasive species.
Which of the following statements about El Niño are true?
A. Occurrence of El Niño is irregular and unpredictable. B. El Niño events in the Pacific can influence weather as far away as Africa. C. The immediate effect of El Niño is a weakening in the east-to-west trade winds D. Weakening in the trade winds results in more upwelling along the Peru-Ecuador coast. E. El Niño results in the movement of weather systems from the western Pacific eastward.