Bio 1011 Cells Exam #1 Answer the multiple choice questions on the scantron sheet. Select the one choice that best answers the question. Answer the short answer questions in the space provided at the end of the exam. 1. Which of the following is the SMALLEST? a. a bacterium b. a ribosome c. a hexose sugar d. a water molecule e. a yeast cell 2. The four main families of small inorganic molecules in cells are a. salts‚ sugars‚ fatty acids‚ amino acids‚ nucleotides b.
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at http://www.jbr.gr Indexed in: WoS (Web of Science‚ ISI Thomson)‚ SCOPUS‚ CAS (Chemical Abstracts Service) and DOAJ (Directory of Open Access Journals) Mesenchymal cells isolation from Wharton’s jelly‚ in perspective to clinical applications Iro KOLIAKOS 1*‚ Nikos TSAGIAS 2 and Vassilis KARAGIANNIS 2 1 2 Stem Cells Bank‚ National Research Foundation‚ Athens‚ Greece C Gynecology Clinic‚ Hyppokrateion Hospital‚ Medical School‚ Aristotle University of Thessaloniki‚ Greece Received: 16
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Epsom salt (sometimes called soaking salt) is a home remedy that has been used for tired muscles and aching joints for generations. It is inexpensive and easily found in many drug stores and even some grocery stores. Epsom salt is a naturally occurring mineral called magnesium sulfate. When you mix the correct amount (follow the instructions on the manufacturer’s label) into a warm bath and then soak for approximately 12 - 15 minutes‚ there are several health benefits. Soaking in a magnesium sulfate
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Plant cells are eukaryotic cells that differ in several key aspects from the cells of other eukaryotic organisms. Their distinctive features include: A large central vacuole‚ a water-filled volume enclosed by a membrane known as the tonoplast maintains the cell’s turgor‚ controls movement of molecules between the cytosol and sap‚ stores useful material and digests waste proteins and organelles. A cell wall composed of cellulose and hemicellulose‚ pectin and in many cases lignin‚ is secreted by
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Salt Marshes‚Mangroves‚and Coral Reefs Salt Marshes • Salt marshes are found along low lying coastlines where boggy ground is flooded by sea water either daily or less frequently. • Many UK salt marshes have been reclaimed for farm land‚ but those that remain provide valuable habitats where salt-tolerant plants grow and birds nest. Salt marshes also pay a vital role for coastal protection‚ they contain creeks which allow tidal waters to flow both in and out which reduces the wave energy
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Health Effects from Cell Phone Tower Radiation by Karen J. Rogers The safety of cell phone towers is the subject of extensive scientific debate. There is a growing body of scientific evidence that the electromagnetic radiation they emit‚ even at low levels‚ is dangerous to human health. The cell phone industry is expanding quickly‚ with over 100‚000 cell phone towers now up across the U.S.‚ which is expected to increase ten-fold over the next five years. The industry has set what they say are
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Muscles and glands Neurons communicate with other neurons and stimulate both ___ and ___. Synapses‚ cell bodies‚ dendrites Signals from other neurons are received at junctions called ___‚ located primarily on the ___ ___and ___‚ the receptive and integrative regions of the neuron. Axon hillock‚ action potential The area where the axon emerges from the soma (cell body) is called the ___ ___. This is also where the outgoing signal‚ called a/an ___ ___ is generated. Collaterals‚ terminals
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Salt and Ice; Minnesotas Battle Abstract Salt is applied in the thousands of tons every year to reduce ice and‚ in turn‚ reduce accidents on Minnesota roads. When the ice and snow melt each spring‚ the majority of this solution is relieved into rivers and lakes through storm drains on Minnesota roads. The salt negatively affects fish and aquatic plants by dehydrating them and altering fertilization. The damaging effects of sodium chloride are long term and not easily repaired. The Minnesota
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McLeod Imagery is used fairly often in the eastern coast of Canada may have an unforgiving and rather harsh streak‚ but many Canadians choose to raise their families and practice their craft there. In both short stories by Alistair McLeod; The Lost Salt Gift of Blood and The Boat‚ the setting of the Canadian east coast is used to develop both the plot and the character. Along with the narration of the physical setting there is also the intricate dialogue spoken by the various characters. In combination
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Animal cells do not have a cell wall. Instead of a cell wall‚ the plasma membrane (usually called cell membrane when discussing animal cells) is the outer boundary of animal cells. Animal tissues therefore require either external or internal support from some kind of skeleton. Frameworks of rigid cellulose fibrils thicken and strengthen the cell walls of higher plants. Plasmodesmata that connect the protoplasts of higher plant cells do not have a counterpart in the animal cell model. During telophase
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