Homework Answers
Cells are very selective about the material they take in and assimilate ,so their internal composition can be very difficult from that of their external environment.
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Yugo Yoreway was analyzing the chemical composition of cells he isolated from the mud in a...
You scoop up a water sample from a local pond nearby, because you are curious about...
You scoop up a water sample from a local pond nearby, because you are curious about the possible microbes that might live there. After looking at several slides that held drops of the sample, you noticed two different kinds of cells: Once kind was very small and had no separate internal structures; the other kind was much larger, and it contained several kinds of internal structures that were physically different from each other. Please name each cell and briefly describe...
//there is no "more knowledge needed" as this was already given as the homework itself HOMEWORK...
//there is no "more knowledge needed" as this was already given as the homework itself HOMEWORK #4 Succession Background: The evolution of a body of water from a lake to marsh can last for thousands of years. The process cannot be observed directly. Instead, a method can be used to find the links between stages, and then put them together to develop a complete story. Read the passage to answer the following questions. Water levels of a large lake fluctuate...
Artificial photosynthesis is an emerging technology to produce chemical fuels from abundant renewable resources by using...
Artificial photosynthesis is an emerging technology to produce chemical fuels from abundant renewable resources by using sunlight, based on principles learned from Nature. For example, huge efforts have been made to develop photoelectrochemical system to produce hydrogen gas by electrolysis of water. In principle, it is a very clean and sustainable process because it uses water and sunlight as a raw material and unlimited energy source, respectively, and produces only oxygen gas as a byproduct. Answer to the following questions....
Artificial photosynthesis is an emerging technology to produce chemical fuels from abundant renewable resources by using...
Artificial photosynthesis is an emerging technology to produce chemical fuels from abundant renewable resources by using sunlight, based on principles learned from Nature. For example, huge efforts have been made to develop photoelectrochemical system to produce hydrogen gas by electrolysis of water. In principle, it is a very clean and sustainable process because it uses water and sunlight as a raw material and unlimited energy source, respectively, and produces only oxygen gas as a byproduct. Answer to the following questions....
Problem 1. Assume that Mars formed from chemical elements that were able to freeze out of...
Problem 1. Assume that Mars formed from chemical elements that were able to freeze out of the cloud of gas around the forming Sun, and that the relative abundances in this frozen-out material was the same as that of solar atmosphere (see belowTable) for Mg, Si, Fe, Na, Al, and Ca. Assume that all elements except perhaps Fe are fully oxidized when they freeze out (as MgO, SiO2, FeO, Na20, Al20s, and CaO). Calculate and tabulate the fractions of the...
1. Please write the full exact balanced chemical equation that describes aerobic cellular respiration (the one...
1. Please write the full exact balanced chemical equation that describes aerobic cellular respiration (the one that begins with glucose) 2. Please draw chemical structures for methane, ammonia, water, carbon dioxide, oxygen, and nitrogen 3. What three conditions need to met in order for natural selection to operate 4. Describe/diagram the life of a cell becoming two cells. Include the terms mitosis, replication, growth, and cytokinesis in your description/diagram 5. How can one tell the difference between a bacterium and...
Acute inflammation involves a variety of cell types, including most cells, endorhelial cells, neutrophills, macrophages, and...
Acute inflammation involves a variety of cell types, including most
cells, endorhelial cells, neutrophills, macrophages, and
fibroblasts.communication and coordination aming these cells is
affected by
A. antibidies
B. Molecule mediators of inflammation
C. the coagulation cascade
D. chemotaxis
Practice Questions 61 15. A patient had a bone marrow transplant and numerous blood transfusions during the course of treatment for cancer. A bone marrow biopsy performed to monitor for recurrence a few weeks after treatment ended, showed abundant hemo- siderin within...
Unit 3 Study Resource Meiosis • Process by which diploid cells create haploid cells NOT part...
Unit 3 Study Resource Meiosis • Process by which diploid cells create haploid cells NOT part of the cell cycle > only some cells ever undergo meiosis During meiosis I, homologous chromosomes line up to allow them to be separated into two new cells o They can become "tangled" during this phase, which leads to crossing-over (rearranging the alleles) O Result of meiosis I is two non-identical haploid cells Meiosis Il looks very similar to mitosis, in that sister chromatids...
34. Why do children under 6 months of age, in developing countries, rarely suffer from malnutrition?...
34. Why do children under 6 months of age, in developing countries, rarely suffer from malnutrition? Children do not require as many different nutrients at that young age. They have adequate food from their family's farm during this period of their life. They are breast fed, and their mother's milk provides all required nutrition. They have not been alive long enough for malnourishment to occur. Most cultures in developing countries have the custom of providing scarce food to infants before...
Photosynthesis and Cell respiration Worksheet Photosynthesis: lWrite the general reaction for photosynthesis. Are the chemical reactants...
Photosynthesis and Cell respiration Worksheet Photosynthesis: lWrite the general reaction for photosynthesis. Are the chemical reactants and products balanced? 2) Prepare a rough drawing of a chloroplast labeling the following: chloroplast, grans, thylakoid membrane, stroma 3) What links photosystem I and photosystem 11? What is the purpose of this link? 4) Consider what happens when light is absorbed by the pigments of photosystem ll; How are electrons affected by the light absorption? Where do the excited electrons go? 5) In...
Problem 1. Assume that Mars formed from chemical elements that were able to freeze out of the cloud of gas around the forming Sun, and that the relative abundances in this frozen-out material was the same as that of solar atmosphere (see belowTable) for Mg, Si, Fe, Na, Al, and Ca. Assume that all elements except perhaps Fe are fully oxidized when they freeze out (as MgO, SiO2, FeO, Na20, Al20s, and CaO). Calculate and tabulate the fractions of the...
Acute inflammation involves a variety of cell types, including most
cells, endorhelial cells, neutrophills, macrophages, and
fibroblasts.communication and coordination aming these cells is
affected by
A. antibidies
B. Molecule mediators of inflammation
C. the coagulation cascade
D. chemotaxis
Practice Questions 61 15. A patient had a bone marrow transplant and numerous blood transfusions during the course of treatment for cancer. A bone marrow biopsy performed to monitor for recurrence a few weeks after treatment ended, showed abundant hemo- siderin within...
Unit 3 Study Resource Meiosis • Process by which diploid cells create haploid cells NOT part of the cell cycle > only some cells ever undergo meiosis During meiosis I, homologous chromosomes line up to allow them to be separated into two new cells o They can become "tangled" during this phase, which leads to crossing-over (rearranging the alleles) O Result of meiosis I is two non-identical haploid cells Meiosis Il looks very similar to mitosis, in that sister chromatids...
Photosynthesis and Cell respiration Worksheet Photosynthesis: lWrite the general reaction for photosynthesis. Are the chemical reactants and products balanced? 2) Prepare a rough drawing of a chloroplast labeling the following: chloroplast, grans, thylakoid membrane, stroma 3) What links photosystem I and photosystem 11? What is the purpose of this link? 4) Consider what happens when light is absorbed by the pigments of photosystem ll; How are electrons affected by the light absorption? Where do the excited electrons go? 5) In...
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