What is true about the genus Sphagnum?
A) It is an economically important liverwort.
B) It grows in extensive mats in grassland areas.
C) It accumulates to form coal and is burned as a fuel.
D) It is an important carbon sink, reducing atmospheric carbon dioxide.
D
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Fish can control buoyancy by:
a. holding air in their lungs. b. expelling air from their lungs. c. swift movements of their opercula. d. adjusting the amount of gas in their swim bladders. e. inflating the chambers of their tracheae.
Lysozyme is an enzyme that breaks down bacterial cell walls and is found in your tears, mucus, and saliva. A mutation occurs in the gene for lysozyme that results in a lysine (a positively charged amino acid) being substituted for an arginine (also a
positively charged amino acid). Do you think that the mutant lysozyme will function similarly to the normal lysozyme? A) no, because all changes in protein primary sequence result in functional differences B) no, because changing lysine to arginine will cause the protein to denature C) yes, because both lysine and arginine are positively charged so the tertiary structure and therefore function should be similar D) yes, because protein function stays the same no matter what mutations occur
The splitting of water in photosynthesis provides:
A) hydrogen ions and light energy. B) O2 and electrons. C) CO2 and electrons. D) glucose and electrons.
A community of organisms along with their physical environment constitutes a(n)
What will be an ideal response?