Which of the following lacks a cell wall?
A. plant
B. animal
C. bacteria
D. fungi
B. animal
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The majority of the water in xylem sap typically ____
a. is used in capturing light energy b. becomes part of new plant cells c. is used to make sugars d. is stored in older plant cells e. evaporates into the air
If there is no gene flow, the curve shifts to the left or to the right, and the population size consequently increases over successive generations, which of the following is most likely occurring?
A) immigration or emigration B) directional selection C) disruptive selection D) genetic drift
Which of the following statements about the energy yield of aerobic respiration is false?
A) Glycolysis resulting from 1 glucose molecule yields 2 ATP molecules. B) The oxidation of pyruvate results in the production of 0 ATP molecules. C) Oxidative phosphorylation resulting from 1 glucose molecule yields 12 ATP molecules. D) The citric acid cycle resulting from 1 glucose molecules yields 2 ATP molecules.
About how long have wastewater treatment plants been in existence?
A- 50 years B- 120 Years C- 190 years D- 220 years E- 300 years