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During gym class Sally noticed that her friend Melissa always ran faster than her. Sally knew that they exercised equally, so she wondered what could cause Melissa to run so fast. Sally start to compare herself and Melissa to see what could cause the difference in speeds. She noticed that Melissa was taller and wondered if height affected speed. Sally predicted that taller people were able to run faster, but wanted to check her prediction. She asked her gym teacher if she could test her idea because the class was all girls and she thought this would help her get accurate results. Sally measured all of her classmates' height in centimeters and recorded it in her chart. Each classmate then ran one mile while Sally timed them with a stopwatch and recorded the data in seconds. She then began to review her data and look for the answer to her question.
1. What question is Sally trying to answer?2. What made her want to answer this question?3. What is being measured or observed in this experiment?4. Are the observations recorded in words or numbers?5. What factor does Sally think might cause the measurement to change?6. What parts of the experiment were kept the same throughout?7. Is there a standard of comparison in this experiment (something she compared everyone to)?
What percent of all the enzyme molecules will have their Cys thiol in the active form at pH 8.6. Some mammals might run or fight when frightened. For both of these examples, illustrate the physiological mechanisms involved in the answer.
examine transcription, including such things as the location in the cell, transcription signals, products, chemical details, and/or the amount of chromosome involved.
A subject extends his arm palm up to catch a falling object. The contact of object with the hand triggers a reflexive response in the biceps muscle. But this response is different and opposite if the object is a raw egg instead of a ball. Explain why..
What is a population? What is a species? You are conducting fieldwork and discover two populations of squirrels living on opposite sides of a lake. How would you design a study to determine, without disturbing the squirrels, whether these two populat..
Gene technology carries with it social and ethical implications—many of which engender personal views and discussion.
Clarify the difference in their efforts to collect oxygen. Polychaetes have lateral, fleshy parapodia beset with numerous setae, and well developed head appendages such as jaws, tentacles and eyes. What function(s) do you think about parapodia serve.
The structure of a mammalian hormone oxtocin, a nine-amino acid polypeptide as follows: cys-tur-ile-glan-asn-cys-pro-leu-gly. At the carboxyl end, the -OH is replaced by an amino group.
express "transamination" and "oxidative deamination"
Assume you treated butter with a fatty acid desaturase, an enzyme that removes hydrogen from fatty acids and creates double bonds.
Eastern tent caterpillars live in sizable groups in silk nests, or tents, which they construct in cherry trees. They are among the first insects to become active in the spring, emerging very early in the season-a time while daily temperature fluctuat..
here Compare and contrast the similarities
sketch a diagram of the circular DNA molecule, showing the locations of the restriction sites for Ecor I and BamH I , as well as distances between them.
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