A duplicated chromosome has _____ chromatid(s)
a. one
b. two
c. three
d. four
e. zero
b
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Which of the following hypotheses could be tested using microautoradiography fluorescence in situ hybridization (MAR-FISH)?
A) Bacteriorodopsin uses light energy to translocate protons. B) Archaea are the main autotrophs in marine water samples taken 300m below the surface of the ocean. C) The microbial community of agricultural soils is more phylogenetically diverse than the microbial community of native prairie soils. D) The ammonia monooxygenase gene is present in members of the phylum Verrucomicrobium.
The procedures for culturing a microorganism require the use of a microscope.
Answer the following statement true (T) or false (F)
Which epithelial cell is best suited for diffusion?
a. stratified cuboidal b. simple squamous c. simple columnar d. stratified squamous e. stratified columnar
While synthesizing a new blue pigment, a chemist notices that the new compound accumulates between an aqueous (water) environment and a hydrophobic environment
When added to a mixture of oil and water, the pigment creates a blue ring around the droplets of oil. Which of the following statements best describes this new pigment? A) The pigment is a polar molecule and is forming hydrogen bonds with both the water and oil molecules. B) The pigment is hydrophilic and will not form hydrophobic bonds with the oil. C) The pigment is amphipathic, having polar and nonpolar regions. D) The pigment is neither polar nor nonpolar; it is apolar. E) The pigment is probably hydrophobic and is attempting to bond with the oil.