Which of the following statements describes
the value of fungi in the environment?
a. Fungi "fix" nitrogen from the air for use by
plants.
b. Fungi trap sunlight energy in the form of
carbohydrates.
c. Fungi release elements from organic matter.
d. Fungi enrich the soil by decreasing the rate
of decay of organic matter.
e. Fungi remove toxic metals from the soil.
C
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Were guppies present in every pond?
a. yes b. no
The tissue lining the mouth, organs of the digestive system, and inner surfaces of the lungs is classified as
A) connective. B) epithelial. C) nervous. D) muscle. E) connective and nervous.
What is the potential across a membrane if the overall Gibb's free energy change across the membrane is -19.3 kJ mol-1 and the pH difference across the membrane is 0.70 at 310K? (R = 8.315 J K-1 mol-1; F = 96,485 J V-1 mol-1)
A) -0.16 V B) +.16 V C) -0.24 V D) +0.24 V
Synthetic nucleic acids are useful as
A. DNA probes. B. primers for PCR. C. antisense RNAs. D. DNA probes and antisense RNAs. E. DNA probes, primers, and antisense RNAs.