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Why do mammals need a circulation system? - Answer too large for diffusion to be an effective way of supplying needs and removing waste. specialized organs e.g. lungs and heart are required. need mass transport to overcome limitations of diffusion in meeting requirements of organisms. keeps a high conc gradient of solutes Why is water a good solvent for transporting substances around the body? - Answer 1) Polar, dipole - so is a good solvent 2) liquid at room temp 3) can easil...

How much ATP is produced in aerobic and anaerobic respiration? - Answer - aerobic - 38 - anaerobic - 2 difference between alpha glucose and beta glucose structure - Answer --see diagram-- Products of anaerobic respiration in animals and in plants/yeast - Answer animals - CO2, H2O, lactate yeast and plants - CO2, ethanol Describe structure of ATP. - Answer - adenine - 3 phosphates - ribose sugar Whee does each stage of respiration take place? - Answer ...

4 trophic levels - Answer -Producers (photosynthesizing organisms e.g. plants) -Primary Consumers (herbivores) -Secondary Consumers (carnivores) -Decomposers - (bacteria, fungi) Why is the transfer of energy between trophic levels only about 10% efficient? - Answer Producers do not obtain all available solar energy - reflection, transmission through leaf, incorrect wavelength Photosynthesis converts light to chemical energy, but the reaction process uses some energy e.g. respi...

vacuole structure and function - Answer - rigidity and support - stores sugar to prevent glucose affecting the plant's water potential - tonoplast membrane, fluid filled chloroplast structure and function - Answer - double membrane - creates intermembrane space to allow the chloroplast to create its own concentration gradients - stroma contains thylakoids stacked into grana - contains chlorophyll and accessory photopigments cell wall structure and function - Answer ...

Define monosaccharide and give the structural isomers for glucose - Answer Carbohydrate monomer which cannot be broken down further - fructose -galactose Alpha Glucose structure - Answer -- Monosaccharide general properties - Answer small - can diffuse through cell membranes soluble - in water so can dissolve in blood for transport sweet How are disaccharides and polysaccharides formed? Bonding? - Answer Condensation reactions (reversible, passive) Glycosidi...

Why do we need a circulatory system? - Answer Too large for diffusion to be effective Specialized organs required What does surface area to volume ratio do? - Answer Affect how substances enter the organism, and how co2 leaves Larger organism = smaller ratio Why is water a polar molecule? - Answer Uneven charge distribution, hydrogen slightly positive, oxygen slightly negative Why is water liquid at room temperature? - Answer Molecules held together by sticky h...

What three things affect the rate of diffusion? - Answer Surface area to volume ratio, distance and concentration gradient. Describe the process of breathing. - Answer Air drawn into lungs via trachea due to low pressure in lungs, create by increase of volume in thorax as ribs move up and diaphragm moves down. How are the alveoli adapted to their function? - Answer Surface area and the concentration gradient is directly proportional to the rate of diffusion. The alveoli w...

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Vehicle collisions are the leading cause of death for individuals from ______ years of age in Georgia. - Answer 3-34 (t/f) Driving is a person’s right - Answer False (t/f) In 1997, the Teenage and Adult Driver Responsibility Act implemented a driver licensing program for novice drivers, ages 15 to 18. - Answer True (t/f) Georgias driver's licenses are divided into different license classes to identify the type of vehicle that may be operated, as well as the operat...

Protected turn lanes are raised lines on the roadway that informs drivers they are reaching the edge of the roadway - Answer False ________ improve drivers ability to identify hazards and conditions in the driving environment and even act as a warning to fellow drivers in certain situations - Answer Headlights Tread depths helps a tire have the proper traction - Answer True ________ provide info to drivers on road conditions and traffic conditions that may increase tra...

expressways routinely have lower crash frequency rather than other roadway types - Answer true there are numerous advantages to expressway driving over-lane roads. one of those advantages is - Answer supports higher traffic volume driving too slowly on expressways can be just as dangerous as driving too quickly - Answer true HOV lanes are generally less congested than other lanes on an expressway and are used for - Answer vehicles with more than one occupant d...

Your safety belt needs to: A. allow unimpeded comfortable movement around the car B. fit snugly C. be so loose you can reach all door locks D. keep you stiff so you can't lean forward - Answer B. To check whether the turn signal lights are working: A. turn on the high beams and check the horn B. turn the ignition switch on and checks windshield wipers C. turn on the headlights D. move the turn signal lever up and then down - Answer D. In a car with manual transmissi...

A safe driver is responsible for - Answer passengers, other roadway users, and self Which of the following driver reactions is NOT that of a defensive driver? - Answer pays little attention to other roadway users A driver who refuses to take an alcohol test might lose his or her license under which law? - Answer implied consent A driver education course - Answer gives you a good start toward becoming a safe driver Yielding in traffic means - Answer allow...

There are seven steps in the turning process. Which of the following is not one of the steps? - Answer Increase the vehicle speak to turn, and press the brakes while turning. At a four-way stop, the driver that reaches the stop sign ________should be the _______to go. - Answer First, First, If insurance coverage is not continuously kept by the driver, the driver could be charged with monetary penalties and license suspension. - Answer True Only the driver of a vehicle ...

For maximum visibility, backing a vehicle requires a driver to: - Answer Physically turn his or her body. Which of the following is a reason for license suspension for a driver under the age of 21? - Answer All of the above Which of the following increases the ability to maintain traction on a vehicle? - Answer ABS system All of the following are effective countermeasures of fatigue except: - Answer Allowing your eyes to lose focus Lap belts on safety belts fi...

If there is opposing traffic within 200 feet in the other lane of traffic, you should: - Answer not attempt a pass Intermediate risk driving is the operation of a motor vehicle environment that includes controlled intersections and moderate traffic volume traveling less than 55 miles per hour. - Answer true A motorist's time management system should ensure an adequate time and space to stop or slow the vehicle if necessary. - Answer false Lanes that have drivers tur...

The ignition can only be started if the vehicle is in the park (for automatic transmission) or neutral (for manual transmission) - Answer true when selecting the appropriate gear for intended direction of travel, automatic transmission equipped vehicle should be placed in _______ while manual transmission equipped vehicles should be placed in ___________ - Answer drive, first gear crash risk is particularly low during the first year that teenagers are eligible to driver - Answe...

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A nurse caring for patients in a long-term care facility is often required to collect urine specimens from patients for laboratory testing. Which techniques for urine collection are performed correctly? Select all that apply. - Answer d. The nurse collects about 3 mL of urine from a patient's indwelling catheter to send for a urine culture. e. The nurse collects a urine specimen from a patient with a urinary diversion by catheterizing the stoma. f. The nurse discards the first urine o...