A student took her pulse three times while lying at rest and recorded the following values: 16 beats, 20 beats, and 18 beats in 20 seconds. the average resting heart rate for the student is 21 beats/minute
42 beats/minute
54 beats/minute
72 beats/minute
90 beats/minute

54 beats/minute

Explanation:

First find the average heart rate from the data given

16+20+18=54

54/3=18

So her average heart rate for 20 seconds is 18

To find her heart rate in beats per minute multiply 18 times 3 because 20 seconds is a third of a minute

18x3=54

So, her average resting heart rate in beats/minute is 54

the sunflower because each experiment got the same results

hope this !

-payshence

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.