Lymphocytes known as blastocysts make antibodies that fight infection.
true, or false....
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Biology, 21.06.2019 20:00
In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote
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Which of these parts of the membrane large moecules pass through it ?
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Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these
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Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.
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