Which one of the following quantities best represents the respiratory heat lost by plants in an ecosystem?
A. Gross primary productivity - standing crop biomass
B. Net primary productivity
C. Gross primary productivity
D. Gross primary productivity - secondary productivity
E. Gross primary productivity - net primary productivity
Answer: E
You might also like to view...
Viruses are simple, noncellular, and lack mRNA.
Answer the following statement true (T) or false (F)
Which method of transport is illustrated here?
a. potocytosis
b. pinocytosis
c. receptor-mediated endocytosis
d. phagocytosis
Which of the following statements regarding ELISAs is TRUE?
A) They are not quantitative. B) They require large amounts of serum. C) The antibody label is a fluorescent molecule. D) They can be used to detect antibody or antigen. E) They involve the use of membrane filters.
Glycolysis generates more stored energy than it expends. What is the net number of activated carrier molecules produced in this process (number and type of molecules produced minus the number of those molecules used as input)?
(a) 6 ATP, 2 NADH (b) 4 ATP, 4 NADH (c) 2 ATP, 2 NADH (d) 4 ATP, 2 NADH