Biology, 18.10.2021 07:20 tdyson3p6xvtu
ở người bình thường , mỗi chu kì tim kéo dài 0,8s . Giả sử mỗi lần tâm thất co bóp đã tống vào động mạch chủ 70ml máu và nồng độ oxy trong máu động mạch người này là 21ml/100ml máu .Có bao nhiêu ml oxy được vận chuyển vào động mạch chủ trong 1 phút?
Answers: 2
Biology, 21.06.2019 21:20
Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.
Answers: 3
Biology, 22.06.2019 00:40
Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation
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Biology, 22.06.2019 01:30
Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity
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Biology, 22.06.2019 02:30
Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?
Answers: 1
ở người bình thường , mỗi chu kì tim kéo dài 0,8s . Giả sử mỗi lần tâm thất co bóp đã tống vào động...
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