1. What is spontaneous generation? 2. How did Pasteur’s experiment defeat the theory of spontaneous generation? 3. Give an example for each of the organizational levels in living things.
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1. What is spontaneous generation?
2. How did Pasteur’s experiment defeat the theory of spontaneous generation?
3. Give an example for each of the organizational levels in living things.
4. The mouse deer or pilandok has shorter fur than its counterpart deer in the Arctic region. What characteristic is exhibited in this situation? Will a mouse deer survive in cold regions? Why or why not?
5. These seeds are the start of new life, but is the seed itself alive? Use the properties of life to decide and explain.
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- IS IT A FACT OR A BLUFF? 1. Bacterial genetic material is composed single stranded DNA as compared to human DNA which is double stranded. 2. Just like humans, all microbes need oxygen to grow and reproduce. 3. There are no living microbes in volcanic vent and in hot spring because microbes die at very high temperature. 4. Most bacteria growth is retarded at low temperature. 5. Bacterial ATP production happens in the mitochondria which is the powerhouse of the cell. After identifying your answer whether fact or bluff, you need to give justification to your answer. You Justification should be given in not more that 50 words.Choose one prokaryote (bacteria or archaea) AND one protest. You can choose a species or more general taxonomic group of interest. Then address the following questions for each. 1. What does the organism look like? Describe or include an image. 2. How does it obtain energy? 3. How does it reproduce? 4. What are its close relatives in the tree of life? 5. Why is it important from a human perspective?1. Is the potato a living organism? Is it a live? How do you know?
- What would the results of Pasteur's swan-neck flask experiment have looked like if they supported the theory of spontaneous generation? B. What did Pasteur's experiments not prove? C. How would the presence of endospores in Louis Pasteur's nutrient solutions have affected his conclusions about spontaneous generation?1. Viruses that do not have a lipid envelope tend to remain infectious outside the body longer than enveloped viruses. “Naked” viruses are also less likely to be rendered harmless by soap and water. Why? 2. The apicomplexan that causes malaria has a photosynthetic ancestor and contains an organelle that evolved from its ancestral chloroplast. The organelle no longer functions in photosynthesis, but it does carry out some essential metabolic tasks. Why would targeting this organelle yield an antimalarial drug that would be likely to have minimal side effects?The Scientific Method Each sentence below describes a step of the scientific method. Match each sentence with a step of the scientific method listed below. A. recognize a problem B. form a hypothesis C. test the hypothesis with an experiment D. draw conclusions 1. Stephen predicted that seeds would start to grow faster if an electric current traveled through the soil in which they were planted. 2. Susan said, "If I fertilize my geranium plants, they will blossom." 3. Jonathan's data showed that household cockroaches moved away from raw cucumber slices. 4. Rene grew bacteria from the mouth on special plates in the laboratory. She placed drops of different mouthwash on bacteria on each plate. 5. Kathy used a survey to determine how many of her classmates were left-handed and how many were right-handed. 6. Dana wanted to know how synthetic fibers were different from natural fibers. 7. Edward saw bats catching insects after dark. He asked, "How do bats find the insects after dark?" 8.…
- 1. Which of the following does not characterize a living organism? A. metabolizes own food B. has organized body parts 2. Which of the following experiments support the spontaneous generation theory? C. maintain disorder of its system D. responds to the environment A. Redi's B. Needham's C. Miller-Urey D. Panspermia 3. Which of the following explains why organisms need to be composed of one or more cells? A. cells perform coordinated processes for its host B. life originated from space 4. Which of the following correctly matches the organism with a cell membrane component? C. cells are the smallest living organisms D. life was breathed by God into man A. animals-chitin B. bacteria -chitin C. fungi - plasmid D. plants- cellulose 5. Which of the following is NOT a membrane-bound organelle? C. lysosome A. centrioles B. cytoskeleton D. ribosomes 6. How does a cell wall functions as protection for the cel? A. It protects the cell from insects. B. It controls passage of substances. C. It…What is Pasteurization? Louis Pasteur was a famous scientist. As you know when you leave milk out it spoils. When Pasteur was alive, people thought that certain cows were more likely (than others) to cause milk spoilage because they produced an inferior type of milk. However Pasteur thought it might have to do with bacteria. He set up an experiment where he used two glasses of milk. In one of the glasses he added boiled milk. He discovered that the boiled milk did not spoil as fast as the un-boiled milk. He told his colleagues; and when his colleagues tried the experiment, they got the same results. What was the problem for Pasteur? What do you think was his hypothesis? What was the manipulated (independent) variable? What was the dependent variable he measured? Which group was the control: the boiled milk, or the unboiled milk. Explain.1. The major primary producers at the base of the food chain in aquatic ecosystems usually belong to what group? (Be very specific; "algae" and "phytoplankton" are both too broad.) 2. The saber-tooth blenny mimics what other species? 3. Name a genus of organisms with two similar and equal flagella. (Look for an illustration that shows two flagella that look the same.) 4. What is the general term for organisms that can use carbon dioxide to make their own carbon compounds? (NOTE: Many different kinds of organisms can do this, so don't just name one group.) 5. What do camembert cheese and penicillin have in common?
- Number of Bacteria X Temperature (°C) At the After 1 After 2 After 3 beginning day days days 6. 8. 12 15 48 187 15 27 126 678 (a) What is the relationship between the temperature and the rate at which the Bacteria X reproduces? (b) When the number of Bacteria X increases, it causes food to turn bad and cannot be eaten. Based on the results above, what can Rose do to preserve food for a longer period of time? Explain your answer.Long ago, many people believed that living things could come from nonliving things. They thought that worms came from wood and that maggots came from decaying meat. This idea was called spontaneous generation. In 1668, an Italian biologist, Francesco Redi, did experiments to prove that maggots did not come from meat. One of his experiments is described below. Redi placed pieces of meat in several jars. He divided the jars into two groups. He covered the first group of jars with fine cloth. He left the second group of jars uncovered. Redi observed the jars for several days. He saw flies on the cloth of the covered jars, and he saw flies laying eggs on the meat in the uncovered jars. Maggots appeared only on the meat in the group of jars left uncovered. What was the question in Redi's experiment? O Is spontaneous generation a valid explanation for maggots in meats? O How do maggots appear in meats? O Are jars a good place to grow maggots?1. Remember, your boss wants to know what temperature the amylase enzyme will function best. Write hypotheses that you could test to answer his question. H0: HA: 2. What would be your control group for the hypotheses you’ve written above on this tropical species? What is/are the experimental groups for your experiment? Stated another way, to prove your work is in Aspergillus oryzae is successful, what will you compare your trials to?
