Biology

The end of life for a group of organisms, usually a species, is called a what?
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The different forms of a gene are called _____. A. nucleotides B. chromosomes C. alleles D. traits
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I really need help someone help me ASAP!!!!!(the image shown has been resized to fit) (20 points)A. Particle WB. Particle XC. Particle YD. Particle Z
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The primates share several characteristics, which distinguish them from all other mammalian orders. Check all of the unique features that one would use to classify members into this order.a. embryonic development is often assisted by a placentab. specialized teethc. an opposable thumba large and well-developed braind. haire. binocular vision
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5.1.4 Quiz: Carbon and Nitrogen CyclesQuestion 2 of 102 PointsWhat happens to most of the nitrogen in a plant when the plant dies?OA. It remains in the dead plant.B. It moves into the atmosphere.OOC. It goes back into the soil.D. It is absorbed directly into animals.
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Humans and hogs have differences in only 1 out of the 51 amino acids in their insulin proteins. Hogs and guinea pigs have differences in 17 out of the 51 amino acids in their insulin proteins.What can be inferred from this information? A. Hogs and guinea pigs are more closely related to each other than either is to humans. B. Hogs are related to humans but not to guinea pigs. C. Humans are more closely related to hogs than hogs are to guinea pigs. D. Humans are related to guinea pigs but not to hogs.
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If a cell contains a set of duplicated chromosomes, does it contain any more genetic information than the cell before the chromosomes were duplicated?
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Most causes of speciation are relatively slow, in that they may take many generations to see changes, with the exception of _____. a) natural selection b) reinforcement c) colonization d) polyploidy
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Bacteria are the most common example of exponential growth. Select a numberbetween 2 and 10 to represent the hourly growth rate of a certain bacteria. Forexample, selecting the number 8 would mean that the amount of bacteria will be 8times greater after every hour.
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scientific name for alkaliphiles
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Describe the three parts of an ATP molecule.
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During Meiosis, the alleles on each gene will separate individually into the gametes. This means that no matter what alleles were paired together in the parent, each gamete receives one allele. Mendel stated this to be the Law of **A. Gene AssortmentB. Independent AssortmentC. Gene RegulationD. Independent Segregation
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When did the ocean become an important area of study?A. about 1,000 years agoB. about 500 years agoC. about 2,000 years agoD. about 200 years ago
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A scientist randomly divided a group of 100 lab rats into two groups of 50. One group was fed regular rat chow while the other was fed the same amount of rat chow with added DDT. Both groups were housed in the same room with the same environmental conditions. At the end of the experiment, rats were weighed and the mean difference calculated. Refer to the accompanying narrative. What variable or variables were manipulated by the scientist?
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Which hormones most directly influence the uterus during pregnancy
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Which of the following specialized structures/inclusions would aquatic photoautotrophic bacteria likely possess? 1. Thylakoids 2. PHB Granules 3. Carboxysomes 4. Gas vacuoles 5. Chloroplasts
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After you have established a research question, which of the following should you do first? 1. design an experiment 2. put your research question into a null and alternative hypothesis 3. determine the variables you will measure4. choose a statistical test to use
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Why are the premiums for a PPO health insurance plan generally more expensive than those for an HMO Health Insurance Plan?
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Give two reasons why both men and women could become victims of violence
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10. What does the word competition mean in biology? A. Two or more organisms looking for the same resource B. Organisms from different species looking for the same resource C. Organisms from the same species looking for the same resourceD. Adults outcompeting offspring for resources
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An organism is classified as a heterotroph or autotroph based on the type of ________ it utilizes.. A. respiration source (e.g., oxygen or other) B. nitrogen source C. carbon source D. none of the above
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You are providing care to an adult who is unresponsive and not breathing as aresult of a drowning. You give your first ventilation before performing CPR andnotice that the chest does not rise. Which of the following should you do next?a. Change the position of the mask and then look for chest movement.b. Blow into the mask more forcefully and then look for the chest to rise.c. Re-tilt the victims head and then attempt another ventilation.d. Give 5 back blows and then check the victims mouth.
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Fil in the blanks:1. A fat molecule is composed of two types of smaller molecules, including only one molecule of _________. 2. A _________ fat molecule also includes one, two, or three molecules. 3. A fat molecule with only one fatty acid is called a __________. 4. A fat molecule with three fatty acids is called a triacylglycerol, or a _________. 5. A fatty acid includes a carboxyl group (-COOH) at one end as well as a long _________. 6. The hydrocarbon chains found in fats store a lot of energy. They also make fats _________, or insoluble in water.
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Which of the following is not true regarding the denaturation and reannealing of double-stranded DNA molecules? Which of the following is not true regarding the denaturation and reannealing of double-stranded DNA molecules? Decreasing the salt concentration of the solution lowers DNA's melting point (Tm). Increasing the G-C content of DNA raises its melting point (Tm). Single-stranded DNAs can only anneal to one another if they are 100% identical in nucleotide sequence. Melting point (Tm) is the temperature at which the DNA is one-half double-stranded and one-half single-stranded. DNA is more likely to denature when exposed to a high pH.
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