Goblet cells are located in columnar epithelium and secrete mucus.
a. true
b. false
Answer: a. true
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Which of the following type of microscopy would be most effective in visualizing the fine structure of viruses and cytoskeletal filaments 10–25 nanometers in diameter?
A. standard light microscopy B. phase-contrast light microscopy C. transmission electron microscopy D. darkfield light microscopy E. differential-interference microscopy
The graph above illustrates the finding that ____
a. habitat preference is innate in blue tits but not in coal tits b. blue tits instinctively prefer pine trees while coal tits instinctively prefer oak trees c. habitat preference in both blue tits and coal tits is innate d. habitat preference in both blue tits and coal tits is learned e. habitat preference in blue tits is learned but in coal tits it is innate
The cell wall ____
a. provides physical support for plant cells b. controls the transport of materials out of the cell c. replaces the plasma membrane in plant cells d. is found in all eukaryotes e. prevents the transport of toxic substances into the plant cells
Opposable thumbs were an adaptation of primates that enabled them to live in trees
____________________ Indicate whether the statement is true or false.