Wings on insects, flowers on plants, and feathers on birds are all examples of variations of some pre-existing
structures, otherwise known as:
a. preadaptations.
b. allopolyploidy.
c. paedomorphosis.
d. allometric growth.
e. punctuated equilibrium.
c
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Aquaporins are ____
a. channel proteins for water b. carrier proteins for solutes c. channel proteins for solutes d. carrier proteins for water e. carrier proteins for water and solutes
When O2 accepts electrons in aerobic respiration, it is converted to ____
a. O3 b. CO2 c. OH d. H2O e. CO
What two types of patients help demonstrate that cancer can be considered a failure of the immune system?
A) transplant patients and HIV/AIDS patients B) rheumatoid arthritis patients and multiple sclerosis patients C) migraine patients and digestive issue patients D) nervous system complication patients and pulmonary system complication patients E) hepatitis C infected patients and human papilloma viruses infected patients
The most important distinguishing feature of eukaryotes that is lacking in bacteria and archaea is ________.
A. the division of the cell into compartments that are bound by membranes B. the DNA replication mechanism C. the cell respiration process which is fundamentally different in bacteria and archaea D. the presence of a cell wall in eukaryotes