Which of the following would inhibit binary fission in protists, but not in bacteria?
A. Blocking ribosome function
B. Blocking DNA replication
C. Blocking RNA synthesis
D. Blocking spindle function
Answer: D
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What is significant about the findings from "split brain" patients studied by Roger Sperry and his collaborators?
A. These studies revealed that the right and left hemispheres both function primarily to enable people to understand and produce language. B. These studies revealed that the right and left hemispheres both function primarily to enable people to describe qualities of objects such as shape and texture. C. These studies revealed that the left hemisphere functions primarily in understanding and producing language while the right hemisphere functions instead in describing qualities like shape and texture. D. These studies revealed that the right hemisphere functions primarily in understanding and producing language while the left hemisphere functions instead in describing qualities like shape and texture.
A capillary tube is used to acquire a small blood sample for CBC (complete blood count) analysis. Suction is not required to transfer the blood from the fingertip prick to the tube in part due to
A. covalent bonding between the water molecules. B. adhesive forces between the water molecules and the glass particles of the tube. C. ionic bonding between the water molecules. D. cohesive forces between the glass particles of the tube and the water molecules.
Which well-known paleontologist created a global database of marine animal families to study changes in diversity through time?
A) Charles D. Walcott B) Jere H. Lipps C) David Raup D) Michael Foote E) Jack Sepkoski
Often students are surprised after performing this exercise at the fact that the bacterial pellet was quite small, and yet they were able to see the DNA without the aid of magnification. Which of the following choices provides a good explanation as to why the amount of DNA may seem large?
A) In this procedure the DNA is replicated B) While in cells DNA is extremely compact within the double helix (supercoiled), the DNA isolated in this protocol is no longer compact C) DNA swells after it has been extracted from bacterial cells