What observations would be made by a scientist viewing cancer cells under a microscope?
A) orderly rows of cells
B) cells that are much smaller than normal cells
C) large growths containing fluid
D) disorganized cells
D
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Consider a diploid organism (2n) with a haploid complement (n) of four chromosomes. At prophase I, how many total chromosomes will be present in a cell?
A. four, one complete set of chromosomes B. eight, four pairs of homologous chromosomes C. 12, four pairs of homologous chromosomes and their haploid complement D. 16, four pairs of homologous chromosomes and two sister chromatids per chromosome
In plants with only primary growth, the epidermis is not
A. one cell thick. B. the outer protective coating of the plant. C. produced by the protoderm. D. covered by a waxy layer that constitutes the cuticle. E. covered with bark.
Match the terms with the labeled structures on the diagram. 
myelin sheath
Fill in the blank(s) with the appropriate word(s).
CRISPR-Cas functions in bacteria to ________
A) edit genomes B) code for restriction enzymes C) replicate viral DNA D) fight viruses