Biology

Explain why water can take many different paths while moving through the water cycle??
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when the action potential reaches the end of the axon, it triggers a release of chemical molecules called:
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PLEASE HELP FASTin order for astronauts to live in space for extended periods of time, crews need to be able to produce their own food. write a multi-paragraph informative essay about how scientists plan for food resources and than conduct research in order to grow crops in space.
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when an individual has a circulating inhibitor (antibody directed against a factor), which choice would reflect mixing study results for the test affected?
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which phrase best describes the scientific method? a. natural experiment b. collection of facts c. linear series of steps d. ongoing process
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Justify how a plant's structure aids in photosynthesis? Be specific in the part of the plant and what its function is in the process of photosynthes
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dizygotic twins have the same genetic makeup. result from a zygote that separates into two clusters. are the most common type of multiple offspring. are more alike than ordinary siblings.
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a reflex involves touching the eye with a piece of cotton causing the eye lid to shut. what is the effector of this reflex arc?
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70. researchers discovered that the regions of the frontal lobe activated when a monkey moves peanuts to its own mouth are also activated when the monkey simply observes other monkeys move peanuts to their mouths. this discovery pointed to the significance of
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a module that is produced asexually by an original genetic individual, which may remain physically linked to the parent or may be separate, is referred to as a
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which of the following makes up the smallest fraction of the human genome? a) protein-coding genes b) stne elements c) ltne elements d) introns
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The passage states that both parents are heterozygous for coat color. Whatdoes this statement mean?
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a 0.30 m solution of sucrose (c12h22o11) at 37oc has approximately the same osmotic pressure as blood. what is the osmotic pressure of blood?
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According to the intermediate disturbance hypothesis, which types of disturbances lead to the greatest species diversity?a. Frequentb. Infrequentc. Intermediate, not frequent or infrequentd. It depends on the ecosystem
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How can scientists determine the presence of different types of carbohydrates?Group of answer choicesA.) They use chemical indicators as a quantitative testB.) They use chemical indicators as a qualitative testC.) They use physical indicators as a quantitative testD.) They use physical indicators as a qualitative test
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what is the relationship between respiration and activity
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why is fermentation a required pathway for providing cellular energy when oxygen is unavailable or in insufficient supply?
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the receptor of estrogen (a steroid hormone) question 11 options: is an ion channel receptor. exists within the cytoplasm. is a protein kinase receptor. exists within the plasma membrane.
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daily smoking of one marijuana joint is equivalent to how many cigarettes in terms of damage to cells lining the airways?
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during a muscle fiber contraction, which decrease in size? multiple select question. entire sarcomere h zone a band i band\
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explain the role of helper t cells in both the cell-mediated immune response and the antibody-mediated immune what happens if an illness or disorder, such as hiv infection, reduces the number of helper t cells?
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the structures in the bodies of many organisms have levels of organization that help the body to carry out life processes. which list correctly shows how these levels are organized from the simplest to the most complex?
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5. CER: How does all the activities that we have done in this unit so far (Here Today,Peppered Moths, Fork Birds and Unicorn Island) support Darwin's theory ofnatural selection? Give examples in your description. (This is not a short answer)
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ligand-gated ion channels are found within the postsynaptic neuron's cell membrane. why are ligand-gated ion channels critical to how synapses communicate information? select all that apply.
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