In a plaque assay, the number of infectious virions is usually identical to the number of virus particles present.
Answer the following statement true (T) or false (F)
False
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In which of the following ways does cardiac muscle differ from skeletal muscle?
A. Cardiac muscle is striated and skeletal muscle is not. B. Cardiac muscle surrounds hollow tubes; skeletal muscle attaches to skin. C. Cardiac muscle cells are electrically connected; skeletal muscle cells are not. D. Cardiac muscle is under voluntary control; skeletal muscle is under involuntary control. E. A group of cardiac muscle cells forms an organ; a group of skeletal muscle cells forms a tissue.
An unusual red sponge is discovered near a deep-sea vent. You want to determine if this is a new species of sponge, so you separate the cells for further study. A new lab assistant accidentally adds cells from a blue sponge to your preparation while you are at lunch. When you return, you find that the sponge cells have reaggregated into a multicellular organism. What do you see if the red and blue sponges are the same species?
A. one sponge with a red side and a blue side B. one blue sponge and one red sponge C. one sponge with blue and red randomly distributed D. one purple sponge (mix of red and blue colors) E. one sponge with alternating red and blue layers of cells
The beach flea Talitrus is a member of the order:
a. Stomatopoda. b. Decapoda. c. Euphausiacea. d. Amphipoda. e. Isopoda.
When gene duplication occurs to its ultimate extent by doubling all genes in a genome, what has occurred?
A) pseudogene creation B) creation of a gene cluster C) creation of a polyploid D) creation of a diploid