Water is capable of dissolving many substances including salt and sugar. Water can be described as which of the following?
a. solute
b. solution
c. solvent
d. ionic compound
c. solvent
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The enzyme _____ prevents chromosomes from shortening at the tips after each round of DNA replication
A. DNA polymerase. B. telomerase. C. topoisomerase II. D. DNA ligase. E. DNA replicase
During the initiation of nitrogen-fixation nodules, a host plant with genetic mutations releases altered forms of flavonoids. What is the likely consequence of this?
A. Infection threads will grow in the wrong direction. B. More nodules will form than necessary. C. The bacteria will not produce any Nod factors. D. Nodules will be misshapen. E. The bacterial will produce higher levels of Nod factors.
Spiders use which mouthparts for subduing prey?
a. mandibles b. pedipalps c. chelicerae d. maxillae e. labial palps
The two main divisions of the skeletal system are:
A) cranial and axial. B) vertebral and appendicular. C) appendicular and cranial. D) appendicular and axial. E) axial and articular.