Biology

Cuticular scale patterns in human head hairs tend to be very regular.Group of answer choicesTrueFalse
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Which term describes a pure substance that is made up of only one type of atom?matterrockcompoundelement
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15. Knowing that the genetic code is almost universal, a scientist uses molecular biological methods to insert the human B-globin gene into bacterial cells, hoping the cells will express it and synthesize functional B-globin protein. Instead, the protein produced is non-functional and is found to contain many fewer amino acids than does B-globin made by a eukaryotic cell. Explain why.
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State the functions of the following PARTS OF AMNIOTIC EGG 1 Embryo 2 Shell 3 Shell membrane 4 Air sac 5 Albumen 6 Yolk 7 Yolk sac 8 Amnion 9 Chorion 10 Allantois
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If water were a nonpolar molecule, how would its properties be different?
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Number of eyes found in earthworm
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What is a subunit vaccine made from?
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During summer in the Northern Hemisphere, A. the Sun rises earlier and sets later than during other seasons. B. the Sun appears lower in the sky than during other seasons. C. there are fewer hours of visible sunlight each day than during other seasons. D. the Sun rises in the Southeast and sets in the Southwest.
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which are responses to internal stumuli?
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PLEASE HELP WILL MARK BRANLIESTSelect the correct stages.Identify the ways in which carbon is added to the atmosphere.
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All BUT ONE is a reason why environmentalists question biofuels as sustainable energy resources. A) The production of certain biofuels consumes more water than any type of fuel energy. B) Large-scale biofuel production would divert land from producing food needed to feed the world. C) Reduction in greenhouse gas emissions drastically reduces the carbon footprint of a combustible fuel. D) Biofuel production can result in habitat loss and increased invasive species, especially if crop production replaces native forest.
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The punnet square shows the results when two parent cows are crossed. R represents red hair and represents white hair. Which best describes this inheritance pattern?
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A skateboard manufacturing company has had problems with the wheels on its skateboards cracking and causing injuries. An engineer for the company knows of a material that he thinks will make the skateboards safer. What would be the best step for the engineer to take next?He should publish a report about the innovation and its impact on public safety.He should conduct tests using computer models to determine the safety impact.He should immediately begin producing all skateboards with the new material.He should convert production of half of the skateboards to use the new material.
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Which statement is true about the elements of the earth? A. the earth element stays in the same area of the lithosphere, hydrosphere, or atmosphere where they originated when the earth was formed. B. The earths elements are used and unused in different molecules overtime. C. The earths elements are constantly being created and destroyed so that a constant amount of matter exists. D. The earths elements pollute the environment and should be discarded.
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Match the correct word and definition. Each word is used only one time so make the best choice for each.made observations about the rocks, most changes on earth happen slowly, so the earth must be very old. Used direct observation. helped develop the principle of fossil correlation; developed a stratigraphic map of England and Wales.specific groups of organisms have followed, or succeeded, one another in a definite sequence through Earth's history the geological processes taking place on Earth today are the same as those of the past and can be used to explain past geological events A. William Smith B. James Hutton C. Principle of Faunal Succession D. Uniformitarianism
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Explain what is happening to air mass from the sea as it moves up the side of the mountain and down the other side.
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"After scanning the green labeled areas and the red labeled areas, when we combine the two images, the spots that show up as yellow correspond to "
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Which layer best represents the mantle?A. 1B. 2C.3D.4
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f(x) = 16x2 + 32x - 9?
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What is the cause of Angelman Syndrome?a) A mutation that occurs randomly after birth or due to a viral infection in the mother during pregnancy.b) The shutting off of the paternal chromosome and the deletion on Chromosome 15 from the mother.c) The shutting off of the maternal chromosome and the deletion on Chromosome 15 from the father.d) A large deletion of chromosome 15 that is inherited from each parent.
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Why was natural selection an important contribution to the theory of evolution?It proved that evolution is true.It explained how evolution works.It summarized the process of evolution.Olt highlighted the main points of evolution.
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What can you observe about how Earths surface changed over time?
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What happens first at each origin of replication?A: enzymes kill virusesB: enzymes remove basesC: enzymes unwind DNAD: enzymes eat nucleotides
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Make a list of objects, products, and any other items around your house where plants were involved in the production of the item. You should have a list of at least twenty items
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