Which of the three gasses is the easiest to break apart: nitrogen gas (N2), oxygen gas (O2), or hydrogen gas (H2)? Which is the most difficult to break apart? What accounts for the differences?
What will be an ideal response?
Hydrogen gas, with a single covalent bond, is the easiest to break apart. Nitrogen gas, with a triple covalent bond, is the most difficult. Oxygen gas has a double covalent bond, which is intermediate in strength to the weaker single and stronger triple bonds.
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Researchers tend to name genes based on what
happens in their absence. The tinman gene in Drosophila results in flies a. without hearts. b. with nonjointed legs. c. with a thick exoskeleton. d. with rust colored eyes. e. without brains.
During the bacterial cell division, the single cells is separated into two cells by
a. centrosomes. b. spindle fibers. c. nucleosomes. d. pinching of the plasma membrane. e. aneuploidy.
What does a positive result mean?
What will be an ideal response?
Vascular leakages (i.e., bleeding for every orifice) observed in Ebola patient is a result of:
a) Pro-cytokines only affecting endothelial cells b) Pro-inflammatory cytokines and Ebola replication in endothelial cells c) Immune-suppressive cytokines and Ebola replication in monocytes d) Immune-suppressive cytokines and Ebola replication in endothelial cells