What is echolocation - Study guides, Class notes & Summaries
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PNB 2250 Exam Practice Questions and Answers
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PNB 2250 Exam Practice Questions and 
Answers 
How are plant cells held together? - Ans:-Plasmodesma 
Plasmodesma - Ans:-Flow of nutrients between cells 
How are animal cells held together? - Ans:-Tight junctions 
Tight junctions - Ans:-Unique connections for animal cells 
2 absolute requirements of animals: - Ans:-1. Control Systems 
2. Distribution Systems 
True/False: gene number is proportional to physical structure or complexity - Ans:-FALSE - it is NOT 
proportional 
Which fossils do we fi...
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BIOL 1902 Final Exam Questions With Verified Answers
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BIOL 1902 Final Exam Questions With 
Verified Answers 
What adaptation do mammals have for hearing? - answerVery large ears 
- Foxes and Wolves 
What adaptations do Owls have for hearing? (5 things) - answerOwls use their face 
- Called Facial Disks 
Hidden Ears 
- inside skull 
Short Bills 
- down curved bills to prevent interference with sigh and hearing 
Asymmetrical Ear Canals 
- gives horizontal separation which allows owl to find prey more precisely 
- Called Auditory Crosshairs!! 
Low win...
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RECF electrical Questions and Verified Answers | Passed | A+
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Which can be added to a circuit to protect against electric shocks 
: GFCI 
What do two output channels determine in a Quadrature encoder 
: Rotation 
Not measured by frequency 
: Heat 
Sensors used in echolocation 
: Ultrasonic 
An electromagnetic motor has electricity flowing through 
: Windings 
2 
Which circuit is digital? 
: B 
A motor on a train converts 60000J of electric into 45000J 
: 15kJ 
Which is an analog sensor
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RECF electrical Questions And Answers With Verified Study Solutions
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Which can be added to a circuit to protect against electric shocks - Answer-GFCI 
What do two output channels determine in a Quadrature encoder - Answer-Rotation 
Not measured by frequency - Answer-Heat 
Sensors used in echolocation - Answer-Ultrasonic 
An electromagnetic motor has electricity flowing through - Answer-Windings 
Which circuit is digital? - Answer-B 
A motor on a train converts 60000J of electric into 45000J - Answer-15kJ 
Which is an analog sensor? - Answer-Line follower 
In a LI...
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Foundations of clinical sonography With 100% verified answers Gr
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Foundations of clinical sonography With 100% 
verified answers Graded A+	 
 
 
Sonography imaging technique to visualize what? - Soft tissue 
 
Echo - Cardiac structures 
 
Doppler Technique - Allows qualitative and quantitative evaluation of 
blood flow hemodynamics w/n a vessel	 
 
Lazzaro Spallanzani - Discovered echolocation 
 
Curie brothers - discovered piezoelectricity 
 
20 hertz & 20kHz - Most human hearing range 
 
20kHz - Ultrasound frequencies greater than 
 
Sound...
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RECF electrical Exam Questions and Answers 100% Pass
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RECF electrical Exam Questions and Answers 100% Pass 
Which can be added to a circuit to protect against electric shocks - Answer️️ -GFCI 
What do two output channels determine in a Quadrature encoder - Answer️️ -Rotation 
Not measured by frequency - Answer️️ -Heat 
Sensors used in echolocation - Answer️️ -Ultrasonic 
An electromagnetic motor has electricity flowing through - Answer️️ -Windings 
Which circuit is digital? - Answer️️ -B 
A motor on a train converts 60000J o...
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DMS-101 Exam 1 (ALL) | 224 Questions with 100% Correct Answers
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What is sound? - A wave which is created by vibrating objects and propagated 
through a medium from one location to another 
Can sound travel in a vacuum? - No 
What is ultrasound? - Sound that has a frequency beyond the limits of perception by 
the human ear 
What is the range of human hearing? - 20 Hz-20,000 Hz 
What is the range of infrasound? - <20 Hz 
What is the range of ultrasound? - >20,000 Hz 
What is echolocation? - The use of ultrasound at various frequencies to locate and 
iden...
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PNB 2250 Exam 1 (final exam prep) Study Guide
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PNB 2250 Exam 1 (final exam prep) 
Study Guide 
cell to cell connection (in animals vs. plants) - Answer-plants = plasmodesmata, 
flow of nutrients between cells 
animals = tight junctions 
convergent evolution - Answer-organisms independently evolve similar traits as a 
result of having to adapt to similar environments 
limited solutions to the same problem 
analogous structures - Answer-flight in insects, bats, birds 
fingerprints in humans and koalas 
echolocation in bats, whales, shrews 
tru...
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Ultrasound Questions and Answers 2023
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Ultrasound Questions and Answers 2023 
What is anechoic? 
.structure that does not produce echoes 
E.g. lumen of blood vessels,bladder 
 
(appear black) 
 
 
 
What is Echogenic? 
.structure that produces echoes, appears white 
E.g. surface of bone 
 
 
 
What is Hyperechoic? 
.structure that produces strong echoes compared to surrounding structure 
 
(appears white) 
 
 
 
What is Hypoechoic? 
.structure that produces weak echoes 
 
.compared to surrounding structure 
 
(appears dark grey) 
 
 ...
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Anthropology Appreciating Human Diversity 17th Edition By Conrad Kottak - Test Bank
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CHAPTER 1 
WHAT IS ANTHROPOLOGY? 
MULTIPLE-CHOICE QUESTIONS 
1. What is anthropology? 
A. the art of ethnography 
B. the study of long-term physiological adaptation 
C. the study of the stages of social evolution 
D. the humanistic investigation of myths in nonindustrial societies 
E. the study of humans around the world and through time 
Answer: E 
Learning Objective: Understand what is meant by the statement that anthropology is the holistic and comparative study of humanity. 
Topic: Defining ...
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