Which of the following are bone-forming cells?
A. lacunae
B. osteoblasts
C. osteoclasts
D. osteocytes
B
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During which phase(s) of mitosis are chromosomes composed of two sister chromatids?
a. prophase and prometaphase only b. prophase, prometaphase and metaphase c. prophase, prometaphase, metaphase and anaphase d. anaphase and telophase only e. all phases of mitosis
A gene locus is
a. a recessive gene. b. an unmatched allele. c. a sex chromosome. d. the location of a gene on a chromosome. e. a dominant gene.
The most accurate distinction between learning and memory is that
A. memory is the process of acquiring new information while learning is the retention of that information over time. B. both learning and memory are the retention of information over time. C. memory does not require prior learning, while new learning cannot occur without it. D. learning is the process of acquiring new information while memory is the retention of that information over time. E. both learning and memory are the process of acquiring new information.
Plants lacking well-developed conducting systems such as mosses, liverworts, and hornworts have been called
A. gametophytes. B. angiosperms. C. bryophytes. D. gymnosperms. E. sporophytes.