While digging in your vegetable garden, you accidentally slice a thick root in half with your trowel, and find yourself looking at a bold X shape in the middle of the root. What can you say about the plant this root belonged to?
a. It was probably a monocot.
b. It was probably an epiphyte.
c. It was probably a dicot.
d. It was probably a weed.
c. It was probably a dicot.
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The virulence factors of a pathogen are determined by how strong or weak a patient's body defenses are at the time of infection.
Answer the following statement true (T) or false (F)
The monomer of a nucleic acid is called a (nucleoside/nucleotide/base).
Fill in the blank(s) with the appropriate word(s).
Epithelial tissue covers or lines body surfaces or cavities.
a. true b. false
Retroviruses make ____ by the process of ____
a. RNA copies of DNA; reverse transcription b. DNA copies of RNA; reverse transcription c. genetic probes; Southern blotting d. genetic probes; Northern blotting e. telomerase; mutagenesis