One difference between DNA and RNA is that __________.
A. DNA is single-stranded, whereas RNA is double-stranded.
B. DNA uses ribose, whereas RNA uses deoxyribose.
C. DNA uses the bases CGAT, whereas RNA uses the bases CGAU.
D. DNA is a nucleic acid, and RNA is a protein.
C. DNA uses the bases CGAT, whereas RNA uses the bases CGAU.
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Which of the following is microscopy in which the microscope is fitted with light filters that enable the excitation of the specimen with a specific wavelength?
A. Bright-field microscopy B. Dark-field microscopy C. Epifluorescence microscopy D. Electron microscopy
Paired excretory organs found in most body segments of segmented worms are called
a. metanephridia. b. parapodia. c. septa. d. clitella. e. setae.
In the Lotka-Volterra equations that represent predator-prey interactions, predators are a source of density-independent mortality for prey
Indicate whether the statement is true or false
Which of the following is found in both archaeal and eukaryotic genomes?
A. chromatin fibers B. histones C. heterochromatin D. euchromatin E. nuclear envelope