Biology

Mitosis unfolds through a sequence of stages marked by specific events in the cell. The structural changes in the cell are about by a series of tightly coordinated underlying mechanisms. Sort each process into the appropriate bin to indicate the stage of mitosis in which it occurs. If a process occurs in more than one stage, sort it to the stage when it first occurs. 1. Cohesins join sister chromatids of duplicated chromosome. 2. Tubulins assemble into spindle microtubules. 3. Microtubules attach to kinetochores. 4. Spindle microtubules disassemble. 5. Kinetochores are motionless in relation to poles of cell. 6. Kinetochores move toward poles of cell. 7. Cohesins break down. a. Prophase b. prometaphase c. metaphased. anaphase e. telophase
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did gene present in human body with out phenotype
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Five different students in Mr. Garcia's class have done an experiment once, and each one got similar results. What should the students do to increase the validity of their results?A.Each student should do a few more experimental trials.B.The students should ask Mr. Garcia for a different experiment to do.C.The students should compare their procedures and try to revise them.D.Each student should modify the experiment and see what results they get.
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what is a societal problem that science can best help solve
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The Pay-Off phase. Which two reactions pay-off ATP?a. Enolase and triose phosphate isomerase glyceraldehyde b. 3-phosphate dehydrogenase and phosphoglycerate c. kinase pyruvate kinase and phosphoglycerate d. kinase phosphoglycerate mutase and pyruvate kinase
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1. Why do you think seagrass beds might filter excess plantnutrients and sediment well?
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What statement would be true according to the theory of blending inheritance?a. The offspring of a parent plant with yellow seeds and a parent plant with green seeds will either have yellow or green seeds.b. The offspring of a parent plant with round seeds and a parent plant with wrinkled seeds will have seeds both round and wrinkled.c. The offspring of a tall parent plant and a short parent plant will all have a height in the middle.d. The offspring of a parent plant with purple flowers and a parent plant with white flowers will all have purple flowers.
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Scientists classify organisms into categories according to their shared characteristics. The most current system of classification sorts organisms into kingdoms first. Then, each kingdom is further sorted into different phyla, classes, orders, families, genera, and species. What is the name of this system of classification?
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If a person decides to switch from drinking freshly squeezed orange juice to calcium-enriched orange juice after a yearly checkup, what is the most likely motivation?
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Based on the formula for kinetic energy, how will the temperature change if you increase the average velocity of the molecules in a gas?
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In Southern blot hybridization, a labeled probe DNA is applied to a population of DNA molecules that have been separated by size using gel electrophoresis. The goal of this procedure is to:_______
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Which is true of sex-linked genes
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A researcher has prepared culture media for mouse cells. Much to his surprise, when he places mouse cells in this media, the cells appear to swell and eventually burst. The researcher likely made a mistake preparing this culture media, creating a(n) _____
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Which factors can prevent permanent fixation of an allele (i.e. maintain genetic diversity)? Hint: You're going to have to try different values than just those presented in the exercise--try to keep both alleles present!a. Gene Flow b. Genetic Drift c. Natural Selection d. Mutation
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i need a list of biotic factor listed from A to Z
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What did Redi find in his experiment?A.Only the broth with the flask open to the air contained living organisms.B.Flies were not found in the sealed jars of rotting meat.C.Both broths contained living organisms.D.Flies were found in all of the sealed and unsealed jars of rotting meat.
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The internal solute concentration of a plant cell is about 0.8M. To demonstrate plasmolysis, it would be necessary to suspend the cell in what solution?
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Hamilton was injured in a biking accident. While waiting for an ambulance, he was given intravenous (IV) fluids. At the hospital, an intern found that many of his red blood cells were swollen or bursting. The attending doctor requested to see the IV fluids used and found that Hamilton had been given IV fluids that:_________
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ASAP! Help, please!! 30 points!!!Which of these affects Earths climate over a shorter period of time?A): changes in Earths tiltB): changes in orbital shape C): changes in solar outputD): changes in ocean currents
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When true-breeding mice with brown fur and short tails (BBtt) were crossed to truebreeding mice with white fur and long tails (bbTT), all F1 offspring had brown fur and long tails. The F1 offspring were crossed to mice with white fur and short tails. What are the possible phenotypes of the F2 offspring?
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List the five components that an ecosystemmust contain to survive indefinitely.
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For DNA, a plot of the change in absorbance versus temperature would be ________, which indicates ________.
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In nitrogen fixation, the plant obtains the nitrogen it needs to synthesize proteins, while the bacteria obtain carbon from the plant and a secure environment to inhabit within the plant roots. Which statement best explains the symbiotic relationship between the plants and the bacteria? A)Both the plants and the bacteria benefit from the process of nitrogen fixation, showing commensalism. B)The plants benefit and the bacteria are unaffected by the process of nitrogen fixation, showing commensalism. C)Both the plants and the bacteria benefit from the process of nitrogen fixation, making it a mutualistic relationship. D)The bacteria benefit and the plants are unaffected by the process of nitrogen fixation making it a mutualistic relationship.
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To colonize, land plants had to overcome a number of difficulties. However, once this occurred they were able to exploit more abundant resources. Which of the following resources were more plentiful on land than in water during the early evolution of land plants?A:) nitrogenB:) waterC:) oxygenD:) sunlight
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