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Cell membranes are structured so that molecules can pass in and out of the cell across them. while both plant and animal cells have membranes, plant cells also have cell walls surrounding their cells. which of the following observations best supports the conclusion that molecules can cross cell walls as well? a) every cell has its own nucleus. b) the chloroplast need light in order to work. c) the cell wall is directly outside the cell membrane. d) water from the soil is used during photosynthesis.
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Biology, 22.06.2019 09:30, zahwaahmaf
Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.
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Cell membranes are structured so that molecules can pass in and out of the cell across them. while b...
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