Battery operated device was invented to control the speed in rhythm of the human heart which professional was mainly involved in this invention

Answers

Answer 1

Answer:

Rune Elmqvist is designated with the credits of establishing the first artificial cardiac pacemaker.

Explanation:

Answer 2

Answer:

Your answer would be B - A Biomedical Engineer

Explanation:

I took the test on Edge 2020-21. Hope this helps, have a great day!


Related Questions

Which biome has low nutrient quality soil?
coniferous forest
tropical forest
deciduous forest
boreal forest

Answers

Answer:

Tropical

Explanation:

The high temperature and moisture of tropical rainforests cause dead organic matter in the soil to decompose more quickly than in other climates, thus releasing and losing its nutrients rapidly. The high volume of rain in tropical rainforests washes nutrients out of the soil more quickly than in other climates.

Answer:

it boreal forest also known as tiaga

Explanation:

The northern Eurasian coniferous forest is called the taiga or the boreal forest. Both terms are used to describe the entire circumpolar coniferous forest with its many lakes, bogs, and rivers. Coniferous forests also cover mountains in many parts of the world.

Who is Thomas Malthus?

Answers

Answer:

Thomas is an English economist and demographer. He is best known for his theory that population growth will always tend to outrun the food supply and that betterment of humankind is impossible without stern limits on reproduction.

Explanation:

A STRAND OF DNA IS 19% GUANINE. WHAT
PERCENTAGE IS CYTOSINE?

Answers

Answer:

28% cytosine

Explanation:Since cytosine and guanine are present in equal amounts, we can simply divide their sum by 2.  28% cytosine, and 28% guanine.

Water pollution control came about as a result of _______.
a.
public protest of the condition of the Cuyahoga River
b.
the Cuyahoga River fire of 1969
c.
the California oil spill
d.
environmental assessments

Answers

Answer:

B. the Cuyahoga River fire of 1969

Explanation:

i just took the test

Water pollution control came about as a result of the Cuyahoga River fire of 1969.

What do you mean by Water pollution?

Water pollution may be defined as the accumulation of undesirable substances in the water which make water harmful to living beings.

During the Cuyahoga River fire of 1969, the number of fire stations along the river doubled due to the fire that caught in the sewage water.

Therefore, water pollution control came about as a result of the Cuyahoga River fire of 1969.

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What’s the correct order?

Answers

I put them into order by writing the numbers on them

Answer for 25 points also I’ll mark you as the brainiest ! For the quickest answer.

Answers

Answer:

The Fourth Point (between 4 and 5)

You find the optimal pH by looking for the pH with the highest activity.

Explanation:

The optimal ph is basically where the enzyme has THE MOST activity.

The fourth point of the pH, and activity is the optimal pH because it has the most activity out of the nine points.

What type of organic compounds store the most energy per molecule?
lipids
O carbohydrates
O proteins
O nucleic acids
O Lipid Acids

Answers

Lipid acids is the correct answer or (fats)

Answer:Lipid Acids

Explanation:

Which contributing factors cause the thermosphere to be warmer than the mesosphere?
A. Gases are more dense in the thermosphere and absorb energy easily.

B. Sunlight is reflected by the abundant gases, oxygen and nitrogen, in the mesosphere.

C. The abundance of hydrogen gas causes explosions, sending heat into the stratosphere.

D. Ultraviolet radiation is absorbed, and fewer air molecules cause the thermosphere to heat quickly.

Answers

Answer:

d

Explanation:

suns ultraviolet rays are absorbed in the thermosphere

The contributing factors cause the thermosphere to be warmer than the mesosphere is ultraviolet radiation is absorbed, and fewer air molecules cause the thermosphere to heat quickly.

What are the effects of ultraviolet radiation?

The experiment that ultraviolet light made plants grow more slowly is the experiment most likely has greater reliability in which the experiment repeated several times and each time found that plants grow slightly slower with ultraviolet rays because the experiment was repeated with the same.

The main effect of ultraviolet light on plant growth is during photosynthetic active radiation under high level, UV -B light increases the net plant photosynthesis in several plant species.

Higher production of dangerous radiation can be induced under both UV-B and high PAR in young and old plant leaves.When UV light is obtained by plants resins production increases and plant become richer in smelling and better in tasting.Due to increase in resin production the plant is protected  from pests and diseases.

Therefore, The contributing factors cause the thermosphere to be warmer than the mesosphere is ultraviolet radiation is absorbed, and fewer air molecules cause the thermosphere to heat quickly.

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What is a major obstacle in cellular respiration? It is limited by the low amount of energy stored in a glucose molecule It is an exergonic reaction, with much of the energy lost as heat, which potentially might damage cells It is an inefficient reaction and doesn’t provide eukaryotic cells with enough energy It requires oxygen to be actively pumped against its concentration gradient into cells

Answers

Answer:

It is an exergonic reaction, with much of the energy lost as heat, which potentially might damage cells

Explanation:

Cellular respiration is an important process carried out by the cells of living organisms in order to supply energy needed for their various cellular functions. Cellular respiration generally involves the breakdown of the stored energy in glucose molecules (in the presence of absence of oxygen).

However, since the process of cellular respiration releases energy as chemical energy (ATP) and majority as heat energy, it is said to be an EXERGONIC REACTION i.e energy-releasing. This hear energy released can damage living cells, which is a major setback to cellular respiration.

Fossils are usually
usually found in

Answers

Fossils are usually found in Sedimentary rock.

sedimentary rock

Explanation: Most fossils are found in sedimentary rock. Sedimentary rock is formed by dirt (sand, silt, or clay) and debris that settles to the bottom of an ocean or lake and compresses for such a long time that it becomes hard as a rock. Limestone and sandstone are types of sedimentary rock that commonly have fossils.

can someone help me with the worksheet below

P.S i am not in college im in 5th grade but i thought it wouldnt let me have an account if i was 11

Answers

Answer:

i think you can have an account starting from middle school, but ill gladly help.

1. tissues

2. skin

3. connective tissues

4. brain

5. organ

6. taste buds

7. epithelial tissues

8. organ systems

9. organism

10. nerve tissues

When are acids used in the human body?

Answers

Answer:

The most commonly-known way is in the stomach, during digestion.

A reduction of the amount of product of a particular gene is observed due to a mutation. This type of a mutation is called ____

Answers

Answer:

Deletion

When a small segment of chromosome is missing a mutation is called deletion. Since chromosome are made of DNA and DNA constitutes genes so Genes are actually present on chromosomes and when a small segment of chromosomes went missing reduced amount of genes is observed

WILL GIVE BRAINLIEST
Are the seasons (summer or winter) the same in the Northern and Southern Hemispheres
at the same time? When it is summer in the Northern Hemisphere, what season is it in the
Southern Hemisphere?

Answers

Answer: No they don't occur at the same time

Summertime in the northern hemisphere happens when it is winter in the southern hemisphere, and vice versa.

The tilt of the earth causes the seasons. The northern hemisphere's summertime means that the northern part of the earth gets more sunlight compared to the southern half, so the southern half experiences winter.

With the tilt held at the same angle, the earth revolves to another point in space, so that the northern hemisphere receives less sunlight and the southern hemisphere gets more. So the seasons swap.

Answer: Winter

Explanation: The tilt of the Earth determines the seasons for the Northern and Southern Hemisphere. When the Northern Hemisphere tilts toward the Sun, it experiences summer. At the same time, the Southern Hemisphere tilts away from the Sun. It experiences winter.

use your own words to explain planetary gravitation. provide an example.

Answers

The planets moons movements and the attraction that can be caused between it

Example : Pluto gains a fourth moon Or a massive new planet in our solar system

QUESTION 1
1 pol
Which of these is an example of quantitative data?
A scientist test for the presence of starch using an iodine test that changes color if starch is present but does
not indicate how much starch is present.
O A scientist asks human subjects taking a new medication how much better they feel on a scale of 1-5.
Scientists record how a liquid smells to them at the end of an experiment.
A scientist measures the change height in plants that were watered with different levels of nitrogen

Answers

Answer:

A scientist test measures the change height in plants that were watered with different levels of nitrogen is an example of quantitative data

how are underwater ecosystems affected by tidal waves

Answers

Answer:

A tidal wave is a shallow water wave caused by the gravitational interactions between the Sun, Moon, and Earth. ("Tidal wave" was used in earlier times to describe what we now call a tsunami.) A tsunamis is an ocean wave triggered by large earthquakes that occur near or under the ocean,...

i think

The milk sugar, lactose, is made up of glucose and galactose. Why type of carbohydrate is lactose?

Answers

Answer:

disaccharide

Explanation:

Match the following groups with the correct description

a. Euglenozoans
b. Diatoms
c. Brown algae
d. Apicomplexans
e. Green algae

1. exists as a large plasmodium and sporulates when conditions dry up.
2. are key primary producers. Have silica skeletons and produce oil to maintain buoyancy.
3. no cell wall, but pellicle. Some free living, others are parasites.
4. exhibits alternation of generations and produces both motile zoospores and sperm.
5. May be unicellular or colonial. Photoautotrophic and biflagellated
6. No cell wall, but have alveoli and a complex life cycle. Some are pathogens of humans.

Answers

Answer:

a- 3

b- 2

c- 4

d- 6

e- 5

Explanation:

A) Euglenozoans are eukaryotic organisms that belong to the Kingdom Protista. They are either free-living or parasitic in nature. They have no cell wall in their structure but instead possess a pellicle.

B) Diatoms are photosynthetic algae that belong to the division-Bacillariophyta. The ability to photosynthesize makes them a primary producer in an ecosystem. Their cell wall is made up of silica, which is unique to their group of algae. They also produce oils to maintain buoyancy.

C) Brown algae belong to the division- Phaeophyta. They exhibit alternation of generations in their life cycle where they produce both motile zoospores and sperm.

D) Apicomplexans are organisms such as plasmodium etc that belong to the phylum- Apicomplexa. Most of them are pathogenic, with some affecting humans. They lack cell wall but have a flat vesicle called ALVEOLI.

E) Green algae belong to the division Chlorophyta. They are photosynthetic organisms and exists as unicellular or colonial organisms. They have flagellated for locomotion.

Each diagram shows a cell with a semipermeable membrane submerged in a
solution. Solutions contain different amounts of solutes (glucose, sodium). The
membrane is NOT permeable to glucose or sodium.

Answers

Explanation:

I guess I don't understand your question.

Which layers of the atmosphere does the temperature decrease the higher you go?

Answers

Answer:

troposphere

Explanation:

The lowest layer is the troposphere where most of the atmospheric gases and all of the planet's weather are located.

Pls mark as brainiest thanks!

You have been studying the lysosomal enzyme cathepsin D in mammalian cells. To look at the localization of the enzyme, you incorporate 32 P into the cells over a long period of time and collect fractions of the cell lysate corresponding to various organelles. Much to your surprise, you find cathepsin D was isolated in the ER fraction, and it contains 32 positive sugar side chains. However, when you pass this enzyme through an affinity chromatography column containing mannose-6-phosphate receptor conjugated to resin, the enzyme passes straight through. However, your cousin calls you up and tell you that she modified your cell line. She claims that she deleted your endogenous cathepsin D gene and transfected a plasmid containing a cathepsin D gene with a Lys-Asp-Glu-Leu (KDEL) sequence on the C-terminus.a) Why is the lysosomal enzyme found in the ER fraction rather than in the lysosomal fraction?b) Explain why the modified enzyme does not bind to the mannose-6-phosphate receptor.

Answers

Answer:

Explanation:

1.

Cathepsin is involved in programmed cell death, it is a lysosomal enzyme and the reason it is found in the ER fraction instead of the lysosomal fraction is because of its c terminal KDEL sequence. this sequence ia a retrieval for protein and causes a backward movement of protein back to endoplasmic reticulum. that is why cathepsin seems to have localised in ER instead of the lysosomal fraction

2 It does not bind to mannose-6-phosohate receptor because this glycosylation process does not occur in the E.R but in Golgi bodies.  because of the KDEL sequence this glycosylation of cathepsin would not occur and cathepsin would go through affinity column without any form of  binding to receptor.If cathepsin can get to the Golgi then glycolysation with Mannose6phospate can occur.

which compound is a hydrocarbon?

a. H20
b. CO2
c. C2H6
d. C6H12O6

Answers

The answer is d-C6H12O6

Answer:

the answer is C

Explanation:

c2h6 is the answer

Which of the following is an example of physical weathering?
Frost wedging
Acid rain
Oxidation
Carbonic acid
PLEASE HELP !!

Answers

Answer:

I think it's frost wedging because acid rain oxidation and carbonic acid are all examples of chemical weathering I hope this helps you

frost wedging

all the other choices would be considered chemical weathering

Describe Claire's symptoms. Explain how they were related to metabolism and homeostasis.

Answers

Answer:

Claire's symptoms suggest that lately, she is not enjoying her work which she was very fond of due to her poor eyesight. She is tearful while reading, she is afraid of her role as a mother for their kids in the future, she is worried for her mother. She can not sleep without sleeping pills. she put 30 pounds as she is not active and watches television or the internet all-day.

Metabolism is the process that maintains the body and cell of an organism by involving various chemical reaction that helps in extracting, storing, and utilizing the energy. Homeostasis and metabolism are related to one another as metabolism is required to maintain homeostasis and homeostasis are required for efficient metabolism.

Which of the following is not part of the scientific process?
A. making predictions
B. asking questions
C. using creative insight
D. proving theories are true

Answers

Answer:

The correct answer is C- using creative insight

is it true that all organisms are composed of one or more cells, and the life processes of metabolism and heredity occur within these cells.

Answers

Answer:

Yes it is true

Explanation:

Cells are the basic unit of all organisms

What is the benefit of diversity in a gene pool?

increased chance of migration.
increased chance of equilibrium.
increased chance of extinction.
increased chance of survival.​

Answers

Answer:

Increased Chances of Survival

Explanation:

Genetic diversity we could say as Variation in a gene pool and it serves as a way for populations to adapt to changing environments, So if there is any environmental change, With more variation it more likely that some individuals will have variation of allele in them that suits the change so they will have brighter chances of surviving.  

An increased chance of survival is the benefit of diversity in a gene pool.

Increased Adaptability: A broad gene pool produces a population with a wider range of genetic features and variants. Due to this diversity, there is a greater chance that an individual may have favorable qualities that will allow them to adapt to shifting environmental factors like temperature, resource availability, or the prevalence of diseases. Individuals with genetic variants that are advantageous in the altered environment are more likely to survive and pass on their genes to succeeding generations.

Better Resilience: A diversified gene pool acts as a defense against potential dangers and difficulties. A population with a diverse range of genetic variations is more likely to have some members who are immune to or resistant to particular illnesses, predators, or other stressors.

Hence, an increased chance of survival is the benefit of diversity in a gene pool.

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What are the types of organs in the urinary system

Answers

Answer:

kidneys, renal pelvis, ureters, bladder and urethra.

Explanation:

What are the major parts of a cell

Answers

Answer:

Cell membraneNucleusCytoplasm

I hope this helps!

Answer:

Nucleus, nucleolus, ribosomes cell membrane, cytoplasm, mitochondria et cetra.

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13)24 + f = 54Show some work What are five facts about Columbus Day?Fact #1:Fact #2:Fact #3:Fact #4:Fact #5 what cells secrete myelin for neurons? a. schwann cellsb. other neuronsc. osteocytesd. leukocytes Balance sheet information for Pawn Company and its 90%-owned subsidiary, Sox Corporation, at December 31, 20X1, is summarized as follows: Pawn Sox Current assets-net $200,000 $50,000 Property, plant, and equipment-net 1,000,000 600,000 Investment in Sox 558,000 $1,758,000 $650,000 Current liabilities $100,000 $30,000 Capital stock 800,000 400,000 Retained earnings 858,000 220,000 $1,758,000 $650,000 Pawn acquired its interest in S for cash when S's assets and liabilities were smaller than their fair values. The consolidated balance sheet of P and S at December 31, 20X1 will show:a. non-controlling interest, $65,000b capital stock, $800,000c. investment in Sioux, $558,000d. retained earnings, $1,078,000 What is the slope of the line that passes through the points (5.3) and (-4,-1) Which number is NOT a solution for 4x - 2] < 8?A-1B 5C 2.DO How did the person named in this 1909 handbill work to improve the lives of African American What would happen to an animal cell with an internal salt concentration of 2% if it were placed in a salt solution with a salt concentration of 20%? HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP Enter the slope-intercept equation for the image of line after a clockwise rotation of 90. (Hint: To find the image of line , choose two or more points on the line and find the images of the points.) 20 Points! What was the result of the Battle of Trenton?A The American victory boosted the colonists' morale.B The heavy losses made many Americans think victory was impossible.C It was the last major battle of the American Revolution.D Thousands of Continental soldiers died. does this picture show a physical or chemical change? Chlorine has 17 electrons. According to the modern atomic theory, how many electrons are found in n = 2? During which process of the water cycle does water change from gas to liquid Read the excerpt from "The Royal House of Thebes."Some hours later, Creon in the palace was startled by a shout, "Against your orders Polyneices has been buried." He hurried out to be confronted with the guards he had set on the dead body and with Antigone. "This girl buried him," they cried. "We saw her. A thick dust-storm gave her her chance. When it cleared, the body had been buried and the girl was making an offering to the dead." "You knew my edict?" Creon asked. "Yes," Antigone replied. "And you transgressed the law?" "Your law, but not the law of Justice who dwells with the gods," Antigone said. "The unwritten laws of heaven are not of today nor yesterday, but from all time."Which archetypes best describe Antigone? Select two options.the sagethe cowardthe tragic heroinethe rebelthe villain Select the interval where f is negative is the answer infinite, zero, or indefinite 2x - 1 = 1 - 2x a snowboard at a local shop normally cost $400. Over Labor day weekend, the snowboard is on sale for 60% off. What is the sale price of the snowboard describe the steps to determining and graphing a translation. Given f(x) = 9x - 12. what is the value of f(5)? Which of the sets of ordered pairs represents a function? A = {(2,-2), (5,-5), (-2, 2), (-5,5)} B = {(4,2), (4,2), (9, 3), (9, 3)}