Seawater - Study guides, Class notes & Summaries

Which statement is true? a. Heme is commonly found within seawater b. Heme-based proteins played a key role in the metabolism of carbon dioxide into forms less toxic to cells. c. Heme-based proteins likely developed as a means by which Fe was transported safely. d. Oxygen binding to heme is insensitive to the presence of acid in mammals. e. Early anaerobic life used heme-based proteins to minimize oxygen toxicity. (e) Early anaerobic life used heme-based proteins to minimize oxygen toxici...

Describing diving with the acronym SCUBA came from what event? The development of the demand regulator in 1943. Earplugs: Should never be worn while diving. If a flexible air-filled container has a volume of 40 cu ft on the surface, what would the volume be at 99 feet in sea water? (rounded off) 10 cu Absolute pressure is defined as: The total pressure exerted on an object. The greatest relative pressure change in sea water takes place between ____ and ____ feet. ...

Which pump uses a high velocity jet of seawater to lower the pressure in the chamber around the converging nozzle? Jet (TRUE/FALSE) A fixed volume of fluid is discharged by an eductor regardless of head pressure. False Which type of heat exchanger has one or more coils of tubing installed inside a shell? Helical tube Which type of heat exchanger uses one fluid flow at right angles (90°) with the other fluid? Cross flow type The gear that is widely used in the main reduction gear C The ...

Biology 2 Exam 9-TBD Questions & Answers 2024/2025 osmoconformers - ANSWERSmarine organisms that maintain an internal environment that is osmotic to their external environment. This means that the osmotic pressure, or osmolarity, of the organism's cells is equal to the osmotic pressure of their surrounding environment. osmoregulators - ANSWERStightly regulate their body osmolarity, maintaining constant internal conditions. osmotic challenges faced by animals in freshwater environment...

Aquaculture Knowledge Quiz Questions with Verified Answers 1: What is aquaculture? - correct answer - Aquaculture is the farming of aquatic organisms such as fish, crustaceans, mollusks, and aquatic plants. 2: What are the main types of aquaculture? - correct answer - The main types of aquaculture are freshwater aquaculture, marine aquaculture, and brackish water aquaculture. 3: What is mariculture? - correct answer - Mariculture is a specialized branch of aquaculture involving t...

SDSU Oceanography 100 Final Exam Questions and Answers Already Passed What is the origin of the Earth? Formed out of a solar nebula What are the origins of Life? Archaea - the oldest origin of life on Earth What is kinetic energy? The energy of motion What is heat energy? Energy created by particles of matter rubbing together What is density? A measurement of the amount of matter in a given volume of something. (mass per unit volume) What is convection? Transfer of heat throu...

Oceans Finals UPDATED Actual Exam Questions and CORRECT Answers Washington Shell fisheries are responding to the declining pH of the upwelling coastal waters. Identify which is NOT a strategy being used by shellfisheries to combat the impact of ocean acidification - CORRECT ANSWER- pressurized degassing of co2 from seawater intake lines TRUE or FALSE: Urban economies in Washington state are at greater risk from reduced shellfishery production. - CORRECT ANSWER- False

MSC final exam 1 questions GRADED A+ What is salinity in the ocean? - ANSWERSdissolved organic elements in 1 kg of seawater The vast majority of sea water is comprised of: - ANSWERSCl, Na, SO4, Mg, Ca, K, minor salts away from coasts, salinity follows the _____ - ANSWERSlaw of constant proportions What are the 3 major trends with regards to elements in the ocean? - ANSWERS1. conservative 2. biologically reactive 3. particle reactive Trend seen in biologically reactive element...

NAUI Open Water eLearning Exam Prep (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A Q: a regular breathing pattern while diving would be Answer: slightly slower and deeper than you normally breathe Q: If a diver's surface air consumption rate is 1.72bar (25 psi) per minute, what would be the consumption rate at 20 meters (66 feet) of seawater? Answer: 5.16 bar per minute (75 psi per minute) Q: appropriate first aid measures for an un...