The possession of two pairs of antennae is a characteristic of _____
A) spiders
B) insects
C) centipedes
D) millipedes
E) crustaceans
Answer: E
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Mutagenic chemicals that ____ and are incorporated into DNA or RNA during synthesis are called base analogs
a. resemble nucleotides b. resemble genes c. resemble amino acids d. cause deletion mutations e. cause frameshift mutations
Which of the following types of microscopes would be most appropriate for viewing the anatomy of a whole organism?
a. light microscope b. dissecting microscope c. scanning electron microscope d. transmission electron microscope
Tree rings occur when _____
a. there are droughts during the time the rings form b. environmental conditions influence xylem cell size c. heartwood alternates with sapwood
What is the unique thing about stem cells that makes them so desirable for therapeutic use?
a) they can divide forever and never go through apoptosis b) they develop into nerve cells and can be used by stroke victims c) they can develop into many different tissue types d) they develop into organs needed form transplant e) they are found in reproductive tissue