The role of the cell membrane in the excretion of materials
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Biology, 22.06.2019 13:10
Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed
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Biology, 22.06.2019 16:00
You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars
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Biology, 22.06.2019 19:10
Which statement does lola need to correct, and why? a) statement 1 because spiral galaxies do not havearmsb) statement 2 because the bulges contain mostlyyoung red stars.c) statement 3 because the arms are made of mostlyyoung blue and blue-white stars.d) statement 4 because spirals galaxies contain littleto no dust.(c)
Answers: 1
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