Which of the following describes the function of the simple cup-shaped eyes found in flatworms?
A. They can see structures.
B. They can see color.
C. They have depth perception.
D. They can detect light and shadows.
E. They have lenses that regulate the amount of light.
D. They can detect light and shadows.
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In plants, the microtubules organizing centers are comprised of microtubules
a. True b. False
Which of the following cells are NOT found in the retina?
A. rods B. cones C. bipolar cells D. hair cells E. ganglion cells
The fact that in bacterial genomes it is difficult to generate inversions of segments with highly-transcribed genes suggests that
a. bacterial cells actively inhibit chromosomal rearrangements. b. the consequences of DNA polymerase encountering RNA polymerase moving the opposite direction may be lethal. c. DNA replication and transcription cannot occur simultaneously. d. bacterial genes are generally transcribed in the opposite direction of replication. e. inversion somehow affects transcription rates.
If you looked at a _________ under the microscope, you would likely see an irregular cluster of spherical cells.
A. Palisade B. Sarcina C. Staphylococcus D. Streptococcus E. Diplococcus