Which of the following does NOT have an exoskeleton?
A. lobsters
B. spiders
C. insects
D. earthworms
E. centipedes
Answer: D
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What are small projections of the mucosal wall composed of brush border cells?
a. microvilli b. mucins c. villi d. submucosa e. jejunum
Which of the following is NOT a category of fruit?
a. complex b. simple c. aggregate d. multiple e. dry
The influenza virus contains an RNA genome. Why do scientists typically have to make a new vaccine for the flu every year?
A. because our bodies develop resistance to the vaccine and it becomes less effective B. because the virus develops resistance to the vaccine C. because the virus can mutate into new strains D. because people change their habits each year and become susceptible to different strains of the virus E. because the common influenza virus can come from many species of animals including cats and dogs
As shown in the accompanying figure, plant cell cytokinesis differs from animal cell cytokinesis because ______.
Fill in the blank(s) with the appropriate word(s).