Embryonic stem cells are harvested from the inner cell mass of an early stage embryo called a(n) ____________________
Fill in the blank(s) with correct word
blastocyst
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Which tissue is best described as a sparse distribution of cells surrounded by an open network of collagen and elastin fibers?
a. fibrous connective tissue b. adipose tissue c. bone tissue d. loose connective tissue e. blood
The phase of mitosis in which the chromosomes condense and centrosomes move to opposite poles of the cell is
A. C, which is metaphase. B. B, which is prometaphase. C. E, which is telophase. D. D, which is anaphase. E. A, which is prophase.
In Experimental Condition 2 of Figure 54-1, the distribution of Chthamalus suggests:a
that interspecific competition kept Chthamalus from extending lower into the intertidal area. b. that intraspecific competition kept Chthamalus from extending lower into the intertidal area. c. that a limiting factor kept Chthamalus from extending lower into the intertidal area. d. that a barnacle parasite kept Chthamalus from extending lower into the intertidal area. e. that predation kept Chthamalus from extending lower into the intertidal area.
For many species, there are often regional differences in their
a. common names b. scientific names c. taxa. d. binomial nomenclature