The maintenance of a constant environment in a cell is called ________.
A. translation
B. homeostasis
C. gene expression
D. active transport
Answer: B
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A distinguishing feature of the Squamata is their
A. hard shell. B. kinetic skull. C. external fertilization. D. shell-less eggs.
A college student has a new job, and must balance classes and commute times to work. The student takes two weeks to drive from campus to the workplace by several routes, including a direct route through town, a highway route, and a route through a city park. Comparing the drive times, affected by the route, speed limits, and intersections is possible. The dependent variable is the
A. average time in minutes it takes to drive from campus to workplace. B. the number of cars in the same route. C. the type of vehicle the student is driving. D. the time in minutes between walking from class to their vehicle. E. distance in miles of each possible driving route from campus to workplace.
In pea plants, the allele for purple flowers (P) is dominant over the allele for white flowers (p). A pea plant heterozygous for the flower color trait has ____ flowers.
A) purple B) white C) pink D) purple and white E) purple and pink
Sister chromatids separate during ________ of meiosis
A) anaphase I B) prophase II C) metaphase II D) anaphase II E) telophase I