The yeti crab is a crustacean that lives near extremely hot hydrothermal vents, where they wave their hairy forelimbs. Their limbs are covered in bacteria that convert methane (from the vent) to sugars. The crabs can often be seen waving their limbs in the water and clearing the bacteria off of their limbs with their mouthparts. Which statement below is true of this relationship? This is a commensal relationship. The crab benefits by gaining energy from the bacteria, and the bacteria neither gain fitness nor lose fitness. This is a parasitic relationship. The bacteria benefit at the expense of the crab that must waste energy keeping its limbs clean This is a mutualistic relationship. The bacteria have an ideal environment for growth and the crab has a primary source of carbohydrates in a nutrient-limited environment This is a commensal relationship. The bacteria have an ideal environment for growth and the crab has a primary source of carbohydrates in a nutrient-limited environment

The yeti crab is a crustacean that lives near extremely hot hydrothermal vents, where they wave their hairy forelimbs. Their limbs are covered in bacteria that convert methane (from the vent) to sugars. The crabs can often be seen waving their limbs in the water and clearing the bacteria off of their limbs with their mouthparts. Which statement below is true of this relationship? This is a commensal relationship. The crab benefits by gaining energy from the bacteria, and the bacteria neither gain fitness nor lose fitness. This is a parasitic relationship. The bacteria benefit at the expense of the crab that must waste energy keeping its limbs clean This is a mutualistic relationship. The bacteria have an ideal environment for growth and the crab has a primary source of carbohydrates in a nutrient-limited environment This is a commensal relationship. The bacteria have an ideal environment for growth and the crab has a primary source of carbohydrates in a nutrient-limited environment

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 1ACR: When William H. was helping victims after a devastating earthquake in a region not prepared to...

See similar textbooks

Similar questions

When William H. was helping victims after a devastating earthquake in a region not prepared to swiftly set up adequate temporary shelter, he developed severe diarrhea. He was diagnosed as having cholera, a disease transmitted through unsanitary water supplies contaminated by fecal material from infected indiv iduals. The toxin produced by cholera bacteria causes Cl- channels in the lurninal membranes of the intestinal cells to stay open, thereby increasing the secretion of Cl- from the cells into the intestinal tract lumen. By what mechanisms would Na+ and water be secreted into the lumen in conjunction with Cl- secretion? How does this secretory response account for the severe diarrhea that is characteristic of cholera?
Pollutants such as halogenated aromatic hydrocarbons (HAHs)are usually spotty in their distributions in bodies of water. Thuseven if HAHs are present, fish might be able to avoid beingexposed to them. Suppose you want to determine if the fishliving in an industrialized harbor are in fact more exposed toHAHs than fish in a more pristine harbor. Why might a study ofliver P450 enzymes be particularly useful for your purposes?
Jennifer Tyler, 44, has had several visits to her primaryphysician about her pain. She told the office nurse thatshe “doesn’t know how much more of this I can take.” Herhistory reveals that she has had an “aching pain, literallyall over my body” for the last 3 months. Jennifer states that“It’s taking over my life now. Everything I do hurts, and tomake it worse, I don’t sleep well at night and I can’t eventhink straight.” Additional symptoms she reported includefatigue, occasional muscle spasms in her legs, headachesthat are occurring on a more frequent basis, and generalanxiety about her health. Jennifer reports that initially shetried Advil off and on with some mild relief and even admitstaking some “old muscle relaxants” that her husbandhad from a back injury. Despite the antidepressants andsleeping pills that were prescribed for her, she has notbeen able to get much in the way of pain relief. After hisinitial examination, her physician has ordered a varietyof laboratory studies to…
Most hunters know that meat from animalsthat have been run to death tastes sour. Suggest a reason for thisobservation.
Cattle are able to survive on a diet consisting almost entirely of plant material because (pick all that apply) they are autotrophic. they manufacture all 15 amino acids out of sugars in the liver. cattle, like rabbits, re-ingest their feces. cattle saliva has enzymes capable of digesting cellulo they have cellulose-digesting, symbiotic microorganisms in specific chambers of their stomachs.
There are undeniable benefits to the use ofpesticides, one of the major ones beingmore attractive, insect-free food. Howwould you personally weigh these benefits compared to the risks of ingestingendocrine-disrupting contaminants?
If garbage is left on the street , flies and microbes can arise from nothing to feed on it
You are a PhD student interested in studying the effects of hypoxia on the behavior of mesenchymal stemcells. You want to culture cells in a hypoxic environment. You decide to use a tri-gas incubator, which allowsfor precise control of the oxygen tension, as well as the partial pressures of nitrogen and carbon dioxide inthe cell culture system.A tri-gas incubator is a type of cell culture system that allows for the control of the three main gasesin the culture environment: oxygen, carbon dioxide, and nitrogen. The oxygen tension and carbon diox-ide tension in the culture environment can be controlled by adjusting the percentages of these gases in thegas mixture that is supplied to the incubator. Hint: To calculate the partial pressure of nitrogen, you can use pN2= pTotal −pO2−pCO2 Part 1.3Calculate the partial pressure of nitrogen (in mmHg) that would be required. Part 1.4In planning for this experiment, you have to order gas cylinders ahead of time. Which cylinder should youorder the…
In Eutrophication, excess nutrients can cause algal blooms. However, what happens when the algae eventually die? Bacterial – Increase or decrease Oxygen – Increase or decrease
Toxic byproducts are made by some organisms that use oxygen for metabolism. true/ false
Organisms that can make their own food using inorganic molecules are called: autotrophs heterotrophs photoautotrophs chemoautotrophs
The water in theYellowstone NationalPark hot springs shownhere is around 160°F(70°C). Biologistsassumed that no speciesof organisms couldlive in water aboveabout 130°F (55°C), sothey were surprisedto find several speciesof bacteria there, nowcalled thermophiles(“heat-lovers”). You’ve learned in this chapter how an enzymefrom one species, Thermus aquaticus, made feasible one of themost important DNA-based techniques used in labs today.Identify the enzyme, and indicate the value of its being isolatedfrom a thermophile. Suggest other reasons why enzymes fromthis bacterium (or other thermophiles) might also be valuable