Which of the following statements about catabolic reactions is FALSE?
A. They recycle organic building blocks.
B. They produce energy like ATP.
C. They produce energy in the form of energy intermediates like NADH.
D. They occur through the oxidation of substrates.
E. They usually require an input of energy.
E. They usually require an input of energy.
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True or false: observations allow scientists to draw tentative explanations called hypotheses
A. true B. false
Which group is not part of the Domain Eukarya?
a. Plants b. Protists with chloroplasts c. Fungi d. Animals e. Heterotrophic bacteria
The density of Douglas firs in an old-growth forest is estimated by counting the Douglas firs in four sample plots of 1 hectare each. The number of fir trees in the plots is 10, 12, 7, and 11, respectively. What is the estimated density of firs in the forest?
A) 2.5 trees per hectare B) 5 trees per hectare C) 10 trees per hectare D) 20 trees per hectare E) 25 trees per hectare
What three features are common to all respiratory systems?
What will be an ideal response?