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In 2002, the fossil of a four-winged dinosaur named the microraptor was discovered in China. What was the significance of the discovery of the microraptor? A)It supported the claim that flight evolved from the ground up. B)It allowed scientists to make a conclusion about the origin of flight. C)It enabled scientists to come up with theories about the origin of flight. D)It provided clues for scientists to come up with a hypothesis about the origin of flight.

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Which is the best definition of a lens? A. A transparent material that dissects light. B. A transparent material that absorbs light. C. A transparent material that refracts light.

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According to the phylogenetic tree, which domains are more genetically related? Eukarya and Bacteria Eukarya and Archaea Plants and Animals

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When deforestation occurs in an area, what immediate effect does this have on the water cycle? A) More water is returned to the atmosphere. B) There is less runoff water, but more transpiration. C) More precipitation is formed, because there is more evaporation. D) More runoff water is created, and less is returned to the atmosphere.

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Which substance is required to prevent the deficiency disease scurvy

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Are there any disadvantages to an individual with the peppered moth?

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In a litter of kittens some of the kittens have coloring that is completely different from their parents what is the explanation for this

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*Psychology* If a biological child of tall parents has dwarfism, and one of the child’s ancestors had dwarfism, which type of gene might have caused the child’s dwarfism? genotypic phenotypic recessive dominant

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*Psychology* What do euthenists believe? Behavioral traits pass from parents to offspring solely through genes. Behavioral traits pass on through genes, but an individual’s environment can have a mild influence in shaping behavior. Environmental factors significantly determine an individual’s behavioral traits. Environment factors completely determine an individual’s physical traits.

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*This is a Psychology question* Which statement is true? A) Eugenicists believe that all traits are hard-coded in an individual’s genes at conception. B) Culture has no influence on an individual’s behavior. C) Environmental factors determine the color of a person’s eyes. D) RNA and DNA play the same roles in gene expressions

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In a certain species of rabbit, the gene for brown fur (B) is dominant and that for white fur (b) is recessive. A purebred brown rabbit is crossed with a purebred white rabbit. What percentage of the offspring are brown

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In a cross between homozygous wild-type drosophila and yellow-bodied males of all of the F1’s were phenotypically wild-type. the F2 generation (resulting from matings of the F1’s) had 356 wild-type offspring. however, all 240 females were wild-type and of the 239 males, 116 were wild-type and 123 were yellow-bodied. how is the yellow-bodied trait inherited?

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Which choice best describes the end product meiosis? A. produces 2 identical daughter cells B. produces 4 identical daughter cells C. produces 2 genetically different daughter cells D. produces 4 genetically different daughter cells

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N which phase of cell cycle does synthesis of DNA take place? A) C phase B) S phase C) M phase

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Which process does a cell use to extract energy from food in order to maintain homeostasis? A.mitosis B.photosynthesis C.celluer respiration D. Sexual reproduction

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? is the division of a parent cell into a number of daughter cells all at once.

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Enzymes effect the reactions in a living cell by changing the A) products of the reaction B) Speed of the reaction C) Temperature of the Reaction D) pH of the reaction

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The Rock Cycle Picture 3 Picture 5 Picture 4 Picture 2 Picture 1 A) Rock is weathered resulting in this step B) Layers of sediment compacted over time form sedimentary rock C) Rocks pushed down into the earth melt become molten rock D) Magma cools to form Igneous rock E) Over time under great heat and pressure igneous and sedimentary rocks become metamorphic rock.

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Sexual reproduction amongst protozoa is done by _____. A) internal fertilization B) release of spores C) conjugation of two mature cells

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Which best describes the different modes of bacterial reproduction? A. In binary fission, the two new cells that are formed are susceptible to the same antibiotic. B. In conjugation, bacterial DNA is transferred from one bacterium to another by a replicating virus. C.In transduction, the cells that are formed are susceptible to the same antibiotic. D.In transformation, a special sex pilus is required to connect two bacterial cells.

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In sexual reproduction, two different strains of hyphae called _____ and _____ strains fuse nuclei and produce a zygote.

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The human heart, composed of specialized muscle cells, beats to a specific rhythm. The heart cell rhythm partly depends on the opening and closing of series of gateways within the cell membrane, called ion channels. Some channels let certain ions flow out, others let different ions flow in. The same membrane system is at work in other cells, helping to regulate what stays and what leaves the cell. This cell membrane gateway system is specifically called the A) sodium-chlorine pump. B) hydrogen-oxygen pump. Eliminate C) sodium-potassium pump. D) calcium-potassium pump.

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A student exposed to streptococcus comes down with a high fever. What is the likely cause? A) Bacteria regression B) Bacteria toxin C) Antibiotic resistance D) Skin Adherence

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During witch part of the cell cycle is the duplicated genetic material within the nucleus of a parent cell separated to create two daughter cells

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In 1859, two dozen rabbits were introduced to Australia. By 1953, there were an estimated one billion rabbits in Australia. The addition of the rabbits to this established ecosystem caused many problems, including a huge decrease in native plants. This left little food for native animals. This is an example of how A) diversity improves an established ecosystem. B) genetic variation leads to the formation of a new species. C) the introduction of non-native species upsets a balanced system. D) changing in one part of a system does not affect other parts of the system.

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Which statement best describes sexual reproduction? a. offspring of the same parents usually have identical chromosomes. b. offspring receive one set of chromosomes from each parent. c. male offspring receive most of their chromosomes from the father. d. female offspring receive most of their chromosomes from the mother.

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The city of Hamden received money for improvements of the town’s park. The park committee polled a random sample of 75 residents from the town. Of the 75 residents, 27 would like to see more trees planted in the park. From this information, what can be inferred? A) Most residents in the town would like to have more trees in the park. B) Exactly 36% of the residents in the town would like more trees in the park. C) About a third of the residents prefer a park improvement of more trees. D) Residents who use the park the most would like more trees planted.

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A yellow pea plant (Yy) and a green pea plant (yy) could not produce green offspring. true or false?

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Which of the following is NOT a step included in the scientific method? Question 3 options: a) prediciting b) observing c) analyzing d) choosing

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There are two species of sparrows that appear very similar to each other. A scientist tried tomate them. He observed that in spite of being of the same species, they didn’t interbreed.What evolutionary force must have worked in this example? A) Migration B) Geographical isolation C) Reproductive isolation

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