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describe 10 different chemicals signals which can have a profound effect on eukaryotic cells.
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- 3c. Describe the evidence suggesting mitochondria are descended from prokaryotic infections of larger cells.An antiprotozoal drug that functioned by interfering with ribosome function in eukaryotes would be safe to use in humans because it would not harm human cells. True False MacBook Air DD 吕0 F9 F8 F7 F6 F5 F4 F3 & $ 7 8 4 < CO #3The most selectively toxic antibacterial agents are those that interfere with bacterial cell wall synthesis. This is because ________. Group of answer choices bacterial cell wall synthesis is easily inhibited whereas eukaryotic cell wall synthesis is more resistant to the actions of the drugs bacterial cell walls have a unique structure not found in eukaryotic host cells eukaryotic cells do not take up the drugs eukaryotic cells inactivate the drugs before they can do any damage
- Unlike eukaryotic cells, prokaryotic cells ________. a. have no plasma membrane b. have RNA but not DNA c. have no nucleus d. a and cExplain the mechanism/s through which molecules such as cyanide and rotenone can exert a cytotoxic effect on eukaryotic cells after instances of exposure. In addition describe if you would expect to observe the same phenotype in anaerobic cells or prokaryotic cells after cyanide exposure.1. Which of the following are examples of eukaryotic organisms? (Select all that apply) Flowers Bacteria Humans Archaea Mushrooms 2. Clathrin is used by cells to a) Help form endocytic vesicles b)Bind a vesicle to the cell’s plasma membrane c)Increase the elasticity of lipid membranes d)Bind to substrates for endocytosis e)Decrease osmotic pressure from solutes 3. A phagosome is a)A membrane compartment used to store water and ions b)An organelle used to degrade molecules c)An endocytic vesicle formed by phagocytosis d)A membrane pit located on the surface of the cell e)An organelle used for the detoxification of organic molecules 4. The process of bringing dissolved substances into the cell is a)Transcytosis b)Receptor-mediated endocytosis c)Exocytosis e)Pinocytosis f)Phagocytosis
- 4:32 120-201 FA22 Homework 02 2.docx 10. When a primary signal needs to be sent to most cells throughout a multicellular organism, the signal most suited for this is a AG) neurotransmitter. AH) hormone. AI) dissolved gas. AJ) transcription factor. AK) translation elongation factor Answer: Explanation: 5G 100 AM) the steroid hormones AN) tyrosine-derived epinephrin and norepinephrin AO) serotonin and melatonin (tryptophan-derived mammalian neurotransmitters) 11. Hydrophobic primary messengers usually cause molecular changes leading to modifications in metabolism. Examples of hydrophobic primary messengers are Explain what are their general chemical properties. AL) thyroxine (tyrosine-derived hormone) and insulin (a small peptide hormone) AP) auxins (tryptophan-derived plant hormones) Answer: Explanation: 12. Which statement regarding cell-surface receptors is correct? AQ) lon-channel-coupled receptors alter the membrane potential directly by changing the permeability of the plasma…Which of these statements is true? An antibiotic is any substance produced by a organism that is antagonistic to the growth of prokaryotes An antibiotic is any substance produced by a prokaryote that is antagonistic to the growth of other viruses An antibiotic is any substance produced by a prokaryote that is antagonistic to the growth of eukaryotic cells An antibiotic is any substance produced by a prokaryote that prevents growth of the same prokaryote.Most antibacterial drugs disrupt or destroy prokaryotic cellular structures or processes that are different than those of eukaryotic cells or may not even be present in eukaryotic cells. List and describe at least three prokaryotic cellular features that could be targeted to inhibit or kill a bacterial pathogen without harming its eukaryotic host.
- In terms of microbial pathogenicity, molecular Koch's postulates are a set of experimental criteria that show: A microbe is the aetiological agent of a disease A gene encodes a product that contributes to disease A gene encodes a product that contributes to immunity to a disease A mutation does not contribute to disease1. What is host resistance in bacteria? 2. What is gram staining technique? 3. Difference between lysosomes and peroxisomes. 4. What are microtubules in cell? 5. Define endoplasmic reticulum, mitochondria, cytoskeleton, ribosomes, vesicles, golgi apparatus, chloroplasts, vacuole, pili and fimbriae, transcription, plasma membrane, cytoplasm, DNA 6. Meaning of primitive cells.Name 4 structures unique to prokaryotic cells. Give the function/adaptation of each.