The movement of carbon compounds fromthe atmosphere to cells and back to the atmosphere is known as ( ). A: cellular respiration B: the carbon cycle C: anaerobic respiration D: aerobic respiration E: continental drift

In euphotic zone (真光层), which of the following is correct? A: The photosynthesis of phytoplankton is stronger than respiration B: The photosynthesis of phytoplankton is weaker than respiration C: The photosynthesis of phytoplankton is the same as respiration D: All the answers are incorrect

无氧呼吸(anaerobic respiration)

Carbon dioxide can inhibit the respiration of grain.

What is the process called that uses oxygen and results in the production of the ATP we use as energy? A: Anaerobic respiration B: Ventilation C: Aerobic respiration D: Circulation

Scabies is<br/>transmitted by ( ) A: Per-cutaneous B: Per-respiration C: Per-placental<br/>(congenital) D: Direct contact E: Per-oral

The ratio of cardiac compression and artificial respiration was 30:2（)

The price-earnings ratio is calculated by dividing: A: Market value per share by earnings per share. B: Earnings per share by market value per share. C: Dividends per share by earnings per share. D: Dividends per share by market value per share. E: Market value per share by dividends per share.

per day, per week

The unit of Porter is () A: Characters per second B: Bit per second C: Frames per second D: Bytes per second