Which statement about an ecosystem is incorrect?
What will be an ideal response?
There is a community of organisms, but no non-living components.
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Which of the following events occurs in lung blood?
a. Free H+ binds to hemoglobin. b. Plasma HCO3 ? enters erythrocytes. c. In the plasma, CO2 and H2O are converted into HCO3 ? and H+. d. In erythrocytes, carbonic anhydrase converts CO2 and H2O into HCO3 ? and H+. e. CO2 binds to hemoglobin.
Which of the following statements about the egg cell is false?
a. It is relatively small compared to other body cells. b. It contains a haploid nucleus. c. It contains lipids. d. It contains mitochondria. e. It is located in a follicle.
The pulmonary circuit of blood flow pumps blood to the ____
a. heart b. brain c. liver d. lungs e. all body cells
During gene expression, information flows in the following order.
A. RNA ? Transcription ?Proteins B. DNA ? Translation ? RNA C. Proteins ? Translation ? RNA D. DNA ? Transcription ?RNA E. RNA ? Transcription ? DNA