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Organic chemistry is currently defined as A) the study of compounds made only by living cells. B) the study of carbon compounds. C) the study of vital forces. D) the study of natural (as opposed to synthetic) compounds. E) the study of hydrocarbons.

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A _______ can be defined as a basic unit of hereditary information that influences a particular trait or group of traits.chromosomegenegenomezygote

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Define the term selectively toxic. why is it an important feature of antimicrobial agents

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Which of the following is defined as the movement of individuals to and from a population? Composition Distribution Dynamics Migration

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“Which phrase best defines a biome? a group of individuals of the same species an interacting community of different species a community and its abiotic factors a large area dominated by specific kinds of organisms”

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What defines an air mass? The humidity is consistent at a specific altitude. The temperature is consistent at a specific altitude. The temperature and humidity are consistent at a specific altitude. The temperature and humidity are consistent at all altitudes.

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A scientist was observing an unknown slide under an electron microsocope; he found a cell without a well-defined nucleus but with a thick cell wall and ribosomes. What type of cell could it be? Prokaryotic Eukaryotic plant cell Eukaryotic animal cell

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Which is one of the most important differences between prokaryotes and eukaryotes? A. the cytoplasm in Eukaryotes does not contain any organelles but that prokaryotes does B. eukaryotes are much smaller than prokaryotes C.prokaryotes do not have a well defined nucleus, but eukaryotes do

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Use an example to define and explain commensalism

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Define renal failure and kindney stone

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Define corpus delicti

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4. In an experiment, suppose that the wings of fruit flies were clipped short for fifty generations. The fifty-first generation emerged with normal-length wings. This observation would tend to disprove the idea that evolution is based on a. inheritance of natural variations b. inheritance of acquired characteristics c. natural selection d. survival of the fittest 5. Charles Darwin called the ability of an organism to survive and reproduce in its specific environment a. diversity b. fitness c. adaption d. evolution 6. Similar patterns of embryological development in different but related organisms are responsible for the formation of a. homologous structures b. analogous structures c. Hox genes d. intermediate fossil forms 7. If an allele makes up one half of the frequency of a population’s allele for a given trait, its allele frequency is a. 100 percent b. 75 percent c. 50 percent d. 4 percent 8. The frequency of phenotypes for a typical polygenic trait is most often illustrated as a. a scatter plot b. a bell-shaped curve c. a pie chart d. a histogram 9. Which of the following events do biologists consider a random change? a. directional selection b. speciation c. disruptive selection d. genetic drift 10. Which of the following statements defines the members of a species? a. They are temporarily isolated from each other b. The are geographically isolated from each other c. They mate and produce offspring d. They have identical genes

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Regular physical activity benefits two vital body systems. Name and define both systems

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Which of the following best defines the carbon cycle? a. cycling of carbon that is essential for life and climate processes b. cycling of carbon that involves changes between the solid, liquid, and gas phases c. cycling of carbon dioxide that is essential for life and climate processes d. cycling of carbon dioxide that involves changes between solid, liquid, and gas phases

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Which of the following is true about cells? A.In general, prokaryotic cells do not have a true nucleus or membrane-bound organelles, whereas eukaryotic cells contain both a nucleus and organelles enclosed by membranes. B.In general, eukaryotic cells do not have a true nucleus or membrane-bound organelles, whereas prokaryotic cells contain both a nucleus and organelles enclosed by membranes. C.Neither prokaryotic cells nor eukaryotic cells ever contain both a true nucleus that is well-defined and organelles that are separated from the cytoplasm by membranes. D.Both eukaryotic cells and prokaryotic cells always contain both a true nucleus that is well-defined and organelles that are separated from the cytoplasm by membranes.

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What do the ecosystems of a puddle, lake, river, jungle, mountain-top grassland, and deep-sea vent have in common? A. They are defined by their abiotic factors only. B. They are defined by their biotic factors and abiotic factors. C. Energy never leaves the system once it enters. D. They are defined by their biotic factors only.

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1. True or false: even when your research does not support your hypothesis, the hypothesis has value. True False 2. Which one of these could define a “hypothesis?” educated guess conclusion scientific prediction 3. Once you have formulated your hypothesis, you would ___________. collect data prove or disprove it design a controlled experiment

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Define natural selection according to charles darwin

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Which of the following best defines gene flow? the sum of all genetic traits in a population’s individuals at a given time any movement of genes from one population to another any movement of organisms from one environment to another the random change in the frequency of an allele in a population

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Which term is defined as the exact location where an earthquake occurred?

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IS ANYONE GOOD AT BIOLOGY? i need the answers to this. Define biodiversity and evolution. Then explain how the two concepts are related. and What law of nature did Newton discover and how did he relate his discovery to the relationship between the Earth and the Moon?

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Meteorology is best defined as

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In the phosphorus cycle, phosphorus can recycle through waste products, decomposition, and of terrestrial and aquatic ecosystems. Food chain The atmosphere assimilation

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In the phosphorus cycle, phosphorus can recycle through waste products, decomposition, and of terrestrial and aquatic ecosystems. food chains the atmosphere assimilation

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Which of the following cells would not have a well-defined nucleus but would have a thick cell wall and ribosomes? A) onion cell B) E. Coli bacteria C) human brain cell

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Which term is defined as “the basic unit of structure and function found in all living things”? tissue organ organelle cell

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What are perhaps best defined as eukaryotes that are not fungi, animals, or plants

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Which of the following best defines soil texture? A A measure of how developed a soil is B Amount of nutrients in the soil C Depth of the soil D The relative amounts of sand, silt and clay particles

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Which statement best defines a cell? A, an independent functional unit of life B, a crystal-like structure that exists in all living things C, the smallest organelle of all living organisms D, the basic unit of structure and function in all living things

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An aerobic activity is defined as one that _____ the heart rate and ____ the body’s need for oxygen.increases; decreasesincreases; increasesdecreases; decreasesdecreases; increases

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