Match the following terms and definitions. 1. a type of egg or sac filled with fluid to support an embryo endothermic 2. a sac-like ball of cells surrounding a fluid-filled cavity that develops after the morula in embryonic development amniotic 3. animals having a dorsal notochord and nerve cord at some point in its development morula 4. organisms that form by radial cleavage and develop an anus from the first indentation of the gastrula stage of embryonic development; includes echinoderms, chordates, and vertebrates blastula 5. organisms that regulate body temperature from outside surroundings; has a fluctuating temperature ectothermic 6. organisms that regulate body temperature internally; maintains a constant temperature chordates 7. formation of a three-layered embryo, following the blastula, in embryonic development gastrula 8. a ball of cells that develop during the beginning stage of embryonic development deuterostomes p ease me @ ag230349
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Biology, 21.06.2019 13:30
Suppose a scientist measures the amount of dna per cell of a particular diploid species at various stages of meiosis. she finds that the meiotic cells contain 3.7 pg , 7.3 pg , or 14.6 pg of dna. match each stage of the cell cycle to the corresponding amount of dna contained within a cell at that stage.
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Biology, 21.06.2019 17:00
Which of the following is true of photosynthesis? a)carbon dioxide is a reactant b)water is a product c)most reactions within this process are exothermic d)oxygen is a reactant
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Biology, 22.06.2019 03:00
Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.
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Biology, 22.06.2019 06:30
Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide
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Match the following terms and definitions. 1. a type of egg or sac filled with fluid to support an e...
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