What percentage of the total blood volume is made up of plasma?
a. about 75%
b. about 50%
c. about 25%
d. about 10%
Ans: b. about 50%
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Self-assembly is limited by
A) the size of the molecule. B) the presence of water in the cytosol. C) information of preexisting structures. D) the time associated with forming solely noncovalent interactions. E) all of the above
Answer the following statements true (T) or false (F)
1.Lichens and mosses that can grow on and erode rock would be considered pioneer species. 2.All communities eventually reach the climax state, in which all components are consistent. 3.Energy is constantly being recycled within an ecosystem. 4.Raw sewage within a water ecosystem can kill fish because respiration by the microbes in the sewage reduces the concentration of oxygen within the water. 5.In a process called denitrification, bacteria convert NO – to N .
Describe the evolutionary relationships between the following organisms. Draw a family "tree" if
necessary. Include bony fish, amniotes, lizards, mammals, turtles, birds, reptiles, ray-finned fishes, amphibians, lungfish, and lobe-finned fishes. What will be an ideal response?
Answer the following questions true (T) or false (F)
1. Mycoplasmas are named for the large quantities of mycolic acid in their cell walls. 2. Most of the methane produced by methanogens is oxidized by other types of bacteria before it affects Earth's climate. 3. Bacteria in the genus Cytophaga are capable of digesting a wide range of complex carbohydrates and are important for degrading raw sewage.