"there are essentially four basic ways a substance can get through the plasma membrane. what are they? if you get specific, you will end up listing six. that's fine too."
phagocytosis, pinocytosis, endocytosis, mediated transport (carrier proteins), channel proteins, passive transport (diffusion and facilitated diffusion), are all methods for things to enter the cell. so my four would be which of these?
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One of the purposes of transcription is to produce a sequence of bases that
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The activity of the modern sample is 1.10 bq . how long does that measurement take?
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Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?
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_is a product of the first stage of photosynthesis.atpglucosecarbon dioxidewater
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