Which is an example of a scientist using a physical model to describe a

human heart?

A. The scientist uses a computer to predict how many times a heart

will beat.

B. The scientist calculates the number of times the heart beats each

second.

C. The scientist makes a model of a heart using clay

D. The scientist compares the heart to a mechanical pump.

Answers

Answer 1

Answer:

it calculate

Explanation:

it help the scientist calculate the number of times and heart beats each


Related Questions

Complete the statements by entering the appropriate term in the spaces below. Is the state of maintaining a stable internal environment despite changing external conditions.

Answers

Answer:

Homeostasis is the state of maintaining a stable internal environment despite changing external conditions.

Explanation:

Got it right on edge! Good luck <3

Homeostasis is defined as maintaining the internal environment without changing external conditions because the body can regulate its internal environment according to conditions.

What is homeostasis?

As it is currently described, homeostasis is a self-regulating process through which biological systems retain stability while adapting to changing environments.

The maintaining of steady blood pressure in the human body by a series of tiny modifications in the normal range of operation of the hormonal, neuromuscular, and cardiovascular systems is an example of homeostasis.

Homeostasis ensures ideal conditions for enzyme functioning and all cell activities throughout the body. It is the preservation of a consistent internal environment in the face of changing internal and external situations.

Therefore to change the internal environment without external conditions, homeostasis is the major process.

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what is it called when bacteria take in DNA from the environment

Answers

Answer:

It is called Bacterial transformation

Explanation:

A contracting skeletal muscle fiber typically shortens as all of its ______ shorten in length.

Answers

Answer:

 sarcomeres

Explanation: A contracting skeletal muscle fiber typically shortens as all of its sarcomeres do this.... Thick and thin protein filaments in sarcomeres interact to cause.... True or false, thick and thin filaments maintain their same length whether the muscle is relaxed or contracted?

IMPORTANT!!!

The town council votes to construct an energy plant on the bank of a large river. It uses river water in its cooling tanks and releases the wastewater back into the river. How might this activity affect the local watershed?

I. The energy plant will likely flood the area during heavy rainfall.
II. The energy plant will likely pollute the water flowing in front of it on the riverbank
III. The energy plant will stop all water flowing through the watershed.

II only
I and III
II and III
I, II, and III

Answers

This is correct

II. The energy plant will likely pollute the water flowing in front of it on the riverbank

Hope this helps :))

Question 7 of 10
How is a scientific theory developed?
A. One scientist proves his hypothesis with an experiment.
B. A single experiment is performed once.
C. An experiment is repeated several times.
O D. Many different experiments are performed and repeated.
TIRMIT

Answers

The answer is maybe gonna have to be C because scientists perform lots of experiments to prove their theory

What four things do all living things need to survive?

Answers

Answer:

The answer would be food, water, shelter, and space.

Explanation:

Answer:

They need air, food, water, and shelter.

Explanation:

hope this helps!

which food chain does occur in the forest ecosystem​

Answers

FOOD CHAIN

Food chain that occurs in the forest ecosystem

EXAMPLE

Carábao gráss (producer) » grásshopper (primary consumer) » wild rodent (secondary consumer) » viper --> owls » wîldcat » leopard » fungi and bacteria » the nutrients from bacteria will go back again to the » soil for plants (producers) to get. And the cycle/chain repeats again.

in the forest ecosystem grass,deer and tiger form a food chain. grass is producer, deer is primary consumer and tiger is secondary consumer

In the embryo, the early skeletal muscle originates from the _______. In the adult, skeletal muscle is repaired by fusion of _______ with muscle fibers. Fill in the blanks.

Answers

The prenatal muscle originates from the myotome. The myotome produces presumed myoblasts that form the satellite cells. Answer: myotome / satellite cells.

How is the skeletal muscle originated and repaired?

Myogenesis is the process of skeletal muscle formation during the embryonal stage. Structures derived from the mesodermal produce the firsts muscle fibers of the body, and then other additional fibers.

The myotome is a primitive muscular structure that contains progenitor muscle cells. Embryonary myotome cells produce two types of cells,

presumed myoblasts that constitute a store of cells that can multiplicate through mitosis

properly said myoblasts that can not suffer mitosis

Some of the presumed myoblasts can differentiate into other cells, and some others remain undifferentiated, turning into satellite cells.

This is, progenitor cells in the myotome originate presumed myoblasts, and then these last ones produce satellite cells located in the postnatal skeletal muscle.

Satellite cells are involved in the postnatal process of muscle repair. They suffer successive mitosis producing new myoblasts and more satellite cells.

In the embryo, the early skeletal muscle originates from the  myotome. In the adult, skeletal muscle is repaired by fusion of _Satellite cells_ with muscle fibers.

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2. A hypothesis is an educated guess based upon observation. It is an explanation of a single event based upon what is observed. A hypothesis has not been proved but can be supported by experimentation.

a) Suppose that out of 10 trees planted in a yard, only five survived. What kind of hypothesis could you make about this observation or event? Remember that a hypothesis needs to have a certain format. (2 points)





b) How could you test this hypothesis? What type of experiment could you perform? (2 points)















c) How would this hypothesis be different from a scientific law? Review the definitions of law and hypothesis to help you. (2 points)

Answers

A law is backed by scientific evidence which is reproducible while a hypothesis is just a guess that may be confirmed or disproved by experiment.

What is a hypothesis?

A hypothesis is a guess that is based on enormous background information. If only five trees survived, it is possible that they received more light than the other 5.

In that case, I will design an experiment in which the same kind of plant is randomly assigned to different treatment groups that receive varying degrees of light and the rate of growth of each group is compared.

A law is backed by scientific evidence which is reproducible while a hypothesis is just a guess that may be confirmed or disproved by experiment.

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In the space provided, describe the similarities and differences between the seasonal changes of the oak tree in Florida and the oak tree in Maine make it Conclusions
Science pls

Answers

Answer:

FLORIDA

Explanation:

What makes the pancreas, liver, and gallbladder so important in digestion?.

Answers

Answer:

What makes the pancreas, liver, and gallbladder so important in digestion?

The pancreas supplies digestive juice to the small intestine through small tubes called ducts. Liver—The liver produces a digestive juice called bile that helps break down fats and

Answer: the person above me is very smart and is correct!

Explanation:

The process whereby an unspecialized cell changes into a more specialized cell is known as?

Answers

Answer:

differentiation

Explanation:

Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.

Which of these glands produce a hormone that stimulates cells in the immune system?.

Answers

Answer:

Adrenal glands

2.2 If you are going to plant the following, which minerals/ nutrients will need to be modified and how? (Refer to theme 7 for requirements) (20) Eragrostis curvula, 3.2 Lolium multiflorum, 3.3. Cenchrus ciliaris. 3.4 Medicago sativa

Answers

Among the plant species mentioned, only the Medicago sativa species needs soil modification for its planting.

Eragrostis curvula

Cultivated in full sun, but tolerates partial shade. Rustic, not developed in terms of soil, it adapts to poor, dry or humid soils.

Lolium multiflorum

This weed can occur at various times in wheat

Cenchrus ciliaris

Planting is usually carried out by seeds, being a manual in general. Sowing can be carried out in pots, furrows or by casting, when carried out in the rainy season.

Medicago sativa

Flat areas marked by deep, fertile, well-drained soils, free of ponds and pH between 6.7 are the forage's preferred.

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Paleomagnetism suggest the earth acts as a giant magnet

O True
False

Answers

Answer:

True

Explanation:

Gravity pulls everything in

write any two function of skeleton system​

Answers

Two functions of the skeleton system are:

It is a support structure for the bodyIt provides protection our internal organs

Animals living on the surface of soft-bottomed habitats anywhere in the ocean are known as __________. a. hermatypic b. ahermatypic c. infauna d. epifauna

Answers

Answer:

C. infauna

Explanation:

Hope that helps!

How should I come out to my friends?

Answers

Answer:

Trust Your Gut. Don't feel forced to come out by friends or situations

Weigh all the Possibilities

Have a Support System.

Let Go of Expectations.

Identify Peer Pressure.

Think About Privacy.

It's a Lifelong Process.

Explanation:

I HOPE THAT HELPS

Draw Conclusions What can you conclude
about two organisms that can mate and pro-
duce fertile offspring?

Answers

Answer:

You can conclude that these organisms belong to the same species.

Explanation:

2 come from the same family then they mate and now there are 3 from the same family.

What is the study of compounds
that contain bonds between
carbon atoms?

Answers

Answer:

Organic chemistry

Explanation:

Carbon Compunds

True or false: stars will move and change categories

Answers

true
stars are constantly moving and the pattern of them change as-well but it seems like they don’t sue to the earth rotation.
True or false this is true they do love and change categories

What is the function of the structure identified by the red arrow? the image shows bacteria with their nuclei in a bright blue. the red arrow points to these nuclei. genetic information mobility food capture protection

Answers

Nucleus is called as brain of the cell, which contain genetic material. The red arrow in the image is showing genetic information of the bacteria.

What is present inside the nucleus?

Nucleus is generally referred as brain of the cell, it is surrounded by an envelop called as nuclear envelop.

The nucleus has a nucleolus, chromatin material and a fluid called nucleoplasm.

The chromatin material is entangled thread like structure which condense during the cell division to form chromosome.

As the red arrow is pointing towards the nuclei, it is showing the genetic information of the bacteria.

Thus the correct option is A.

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Which statements describe a mushroom’s niche? select three options. mushrooms are a type of tree. mushrooms are often found in moist areas. mushrooms break down dead plants. mushrooms can live for a very long time. mushrooms reproduce through spores.

Answers

Answer:

Mushrooms reproduce through spores

mushroom are often found in moist areas

mushrooms break down dead plants

Explanation:

A mushroom reproduces by releasing spores into the air, which then land on another surface to grow a new mushroom.

mushrooms are almost always found in shaded, moise areas as that is where they can grow best.

mushrooms release enzymes that help decompose dead plants and animals

hope this helped!

The formation of two species from one original species is known as.

Answers

Answer:

I would assume it was something like a fusion

consequences of bullying​

Answers

what goes around comes back around, there is no reason to bully people anyways it can cause depression anxiety and other stuff like that for others

which statement correctly describes events in the space race

A. The soviet union sent the first human into space, and the United States sent the first human to the moon.

B. Germany sent the first human into space, and the United States launched the first artificial satellite.

C. The soviet union launched the first artificial satellite, and the United States sent the first human into space

D. The United States sent the first human into space and sent the first human to the moon

Answers

Answer:A

Explanation:

points)
After glycolysis happens in the cytoplasm, where do the pyruvate molecules that
were made from the food go for the next step in the cellular respiration process?
The Mitochondria
The Nucleus
They remain in the cytoplasm
The Golgi Apparatus

Answers

Answer:

Mitochondria

Explanation:

Have a nice day

what is meristematic tissue? write its type? give one example of each.​

Answers

Meristematic tissues, or simply meristems, are tissues in which the cells remain forever young and divide actively throughout the life of the plant. When a meristematic cell divides in two, the new cell that remains in the meristem is called an initial, the other the derivative.

Meristematic cells are generally small and cuboidal with large nuclei, small vacuoles, and thin walls. A plant has four kinds of meristems: the apical meristem and three kinds of lateral—vascular cambium, cork cambium, and intercalary meristem.

There are three primary meristems: the protoderm, which will become the epidermis; the ground meristem, which will form the ground tissues comprising parenchyma, collenchyma, and sclerenchyma cells; and the procambium, which will become the vascular tissues (xylem and phloem).

Answer:

The meristem is a type of tissue found in plants. It consists of undifferentiated cells capable of cell division. Cells in the meristem can develop into all the other tissues and organs that occur in plants. These cells continue to divide until a time when they get differentiated and then lose the ability to divide. Meristematic tissue and its types

There are three types of meristematic tissues: apical (at the tips), intercalary or basal (in the middle), and lateral (at the sides). At the meristem summit, there is a small group of slowly dividing cells, which is commonly called the central zone.

Cell assemble proteins based on information stored in the cell in which order are the following parts of the cell involved in creating proteins

Answers

Answer:

Ribosomes and the nucleus are the main things that make proteins in a cell. Reword your question please because it doesnt make much sense

Did I do this right? If not can some correct them please

Answers

Answer:

yes you have done it correct

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Macy has $3 in her piggy bank. If this is 10% of her monthly allowance, what is her monthly allowance During which phase of the business cycle are the most people out of work?a. end phaseb. recovery c. boomd. depression Question 7 of 10Who of the following is not known for being a songwriter?A. Bob DylanB. Cecil SharpC. Stephen FosterD. Woody Guthrie Another goal of the Lewis and Clark expedition (besides documenting the people, plants, and animals) was to try to find a water route across North America. What was this called?A. Southwest PassageB. Southeast PassageC. Northwest passageD. Northeast Passage Explain what is happening in the African Rift Valley by writing a paragraph.Please and thank you. aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaNeed help with this what is an advantage of using deductive reasoning HELP ME WITH THIS NOOOOWWWW Which statements are idioms? Drag each tile into the appropriate category: "Idiom" or "Not an Idiom."I'm in love with you.IdiomNot an IdiomFocus on what's important.I'm head over heels for you.She drives me up the wallCut to the chase.She frustrates meIntroDone Calculate the net force on particle q1. First, find the direction of the force particle q2 is exerting on particle 91. Is it pushing to the right (+), or to the left (-)? Enter + or - -5.90 C +13.0 C +91 93 +7.70 C + 92 + 0.25 m K 0.30 m Which statement about the simplified binomial expansion of (a b)n, where n is a positive integer, is true? all terms of the expansion are positive. all terms in the expansion are negative. the first term in the expansion is positive. the first term in the expansion is negative. The value of x is - 1/4 . Order these expressions from least to greatest:x1 xx 1- 1 xYour answer: T/F In doing a search incident to an arrest, police may only pat-down the outer clothing. Geometry math work! help needed please. A neuron membrane potential moves from -90 mV to -80 mV in response to a brief stimulation. We would term this change in potential as a(n) An isosceles right triangle has legs of equal length. If thehypotenuse is 18 centimeters long, find the length of each leg. What signaled the dissolution, or end, of the Soviet Union?O the INF TreatyO the war against ChechnyaO the takeover by Boris Yeltsin in the August CoupO the resignation of Gorbachev and creation of the CIS 3. Which phrase from "Baseball" uses a metaphor to build suspense?"What happened that afternoon / I can't remember,"O "You know you never will."O "The game was over / a million years ago."""Ray Michaud... / screamed arrows at me from the dugout" I need help please We dont got a teacher so we clearly dont learn anything Write 75 to 100 words supporting the following statement:Africa had several advanced civilizations during the Middle Ages.Use information from the lesson as evidence to support your answer.you dont have to awnser this i just want to give out points so here 30 points for u