The heart works as
A. One pump
B. Two pumps

Answers

Answer 1

Answer: Hello, There!  your Answer is Below

B. Two pumps

Explanation:

Your heart is divided into two separate pumping systems, the right side and the left side. The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide.

Hope this helps you!!

Have a great day!!!

Answer 2

The heart works as two pumps.The right pump moves blood from the heart to the lungs to pick up oxygen and release carbon dioxide, then back to the heart. The left pump moves blood around the body.


Related Questions

how genes control many of the characteristics of the organisms? answer asap pls

Answers

Answer:

To summarize, two things determine the traits an organism has: its genotype and the dominance or recessiveness of the alleles it has. Some traits, like flower color in peas, are controlled by a single gene, but ultimately many if not most traits in an organism are controlled by more than one gene

Explanation:

Como identificar un nucleotido del ADN

Answers

Answer:

By the build

Explanation:

A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, the base uracil (U) takes the place of thymine.

Which central idea of the article is MOST
supported by this paragraph?
А
African crested rats use poison from tree bark
as a type of defense.
B
African crested rats have many natural
predators in their woodlands habitat.
Scientists
want to increase conservation efforts
to protect crested rats.
D
Scientists are just beginning to leam about the
behaviors of crested rats

Answers

I think is B because is talking to the Africans and I think is important to that sou

what explains the diffrence in traits between all living organisms remember it begins with v​

Answers

Answer:

Variation explains the difference in traits between all living organisms.

Explanation:

Without variation it would be pretty impossible to notice any "differences" in traits, especially between living organisms.

Why does the concentration of CO2 go up and down throughout the year?

Answers

the role of plants in carbon cycle

Explanation:

the amount of CO2 found in the atmosphere varies over the course of a year. much of this variation happens because of the role of plants in carbon cycle...respiration occurs all the time, but domains during the colder months of the year, resulting in higher CO2 levels in the atmosphere during those months.

True or False: Samples that represent as much of the whole population as possible provide stronger evidence.

Answers

yes this is correct !
the answer is trueeee

The state of Illinois has a law that requires 25% of electricity in the state 2 be produced by renewable energy sources by the year 2025. This law is an example of
a. Green pricing
b. A renewable portfolio
c. An Energy Star promotional program

Answers

Answer:

b. A renewable portfolio  

Explanation:

A renewable portfolio refers to the policies that are designed to increase the use of renewable energy sources for electricity generation. These renewable energy sources such as water, wind and solar radiation etc are used for the generation of electricity and also to reduce pollution in the environment. These renewable energy sources are present unlimited or in huge amount in our environment so its usage is beneficial for both humans and environment.

GIVING BRAINLIEST!!!!!!


A student made a table to show information about the physical structures and organs of birds. What statement best describes how to correct an error in the table?


The feathers support the body.
The feathers help the bird move.
The ovaries produce the eggs.
The ovaries produce the sperm.

Answers

The ovaries produce eggs.

Help please!?!?!??!?!?????



Answers

Answer: A

Explanation: Hope this help :D

The blue flame is hotter.

During experiment yeast fermentation ,how is the anerobic condition maintained to ensure that the fermentation process is completed?​

Answers

Answer:

By covering the solution.

Explanation:

The anaerobic condition is maintained to ensure that the fermentation process is completed by covering the solution so that no oxygen enters the solution. Anaerobic conditions are necessary for the fermentation process because the anaerobic conditions allow the production of lactic acid, ethanol and carbondioxide gas from pyruvate. Without anaerobic condition, the fermentation process does not occur so that's why we can say that anaerobic conditions should be maintained for the fermentation process.

The nucleus contains______

Answers

Answer:

If you're talking about the cell: The nucleus contains the cell's chromosones

If you're talking about the atom: The nucleus contains protons and neutrons.

Explanation:

Have a good day :)

Cell chromosomes here is the proof below, if you need more assurance just look it up.

X + H20 → Y + O2(what would be y in this equation ?)​

Answers

Answer:

y. 2. • CxHy + O2 → x CO2 + y/2 H2O. Combustion Problem. Erythrose is an important mono-saccharide that is used in chemical synthesis. It contains Carbon.

Explanation:

In the chemical equation X + H₂O → Y + O₂, Y represents the product of the chemical reaction, here Y is the glucose, and this X is carbon dioxide, and this is a reaction of the photosynthesis.

What is photosynthesis?

During photosynthesis, the energy from light is used to split water molecules into oxygen and hydrogen ions. The oxygen is released into the atmosphere as a waste product, while the hydrogen ions are used to create a chemical gradient across the thylakoid membrane within the chloroplast. This gradient is then used to power the creation of ATP, the energy currency of cells, as well as to reduce carbon dioxide to form organic molecules, such as glucose. The overall equation for photosynthesis is:

6 CO₂ + 6 H₂O + light energy → C₆H₁₂O₆ + 6 O₂

Hence, In the chemical equation X + H₂O → Y + O₂, Y represents the product of the chemical reaction; here, Y is the glucose.

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The organ system that protects the body’s internal environment from bacteria and other foreign bodies, and helps maintain stable body temperature, is the ___________ system. What is the blank answer?

Answers

Answer:

integumentary system

.............

the answer would berespiratory

Which elements are essential for living organisms to survive? Check all that apply.

carbon
polonium
sulfur
zinc
hydrogen
oxygen
nitrogen

Answers

Answer:

it's carbon, sulfur, hydrogen, oxygen, and nitrogen (A, C, E, F, G)

Explanation:

The most essential elements for the survival of living organisms are carbon, hydrogen, oxygen, and nitrogen.

Why oxygen is an important element?

Oxygen is important for respiration and the energy-producing process that drives most living things' metabolisms. This is considered an element that is important for the life.

All life forms on Earth require carbon. Carbon intake and outflow are a feature of every plant and animal life, whether they take in carbon to help build food or release carbon through respiration.

Therefore, Oxygen, carbon, hydrogen, and nitrogen are important elements as 96% of the human body will be made with them.

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Select the correct answer.
In January, Earth is closest to the Sun in its orbit. Yet the Northern Hemisphere experiences winter. Which statement explains this phenomenon?
A.
Earth completes one precession cycle in January every year.
B.
The Northern Hemisphere is located at high latitudes.
C.
The Northern Hemisphere is tilted away from the Sun.
D.
The eccentricity of Earth’s orbit is high in January.
E.
The obliquity or tilt of Earth is greater than 23.5° in January.

Answers

Answer:

C. The Northern Hemisphere is tilted away from the sun

In January, Earth is closest to the Sun in its orbit, yet the Northern Hemisphere experiences winter because the Northern Hemisphere is tilted away from the Sun; this is option C.

What is Earth's axis tilt?

The Earth's axis is tilted at an angle of approximately 23.5 degrees relative to the plane of its orbit around the Sun. This tilt is the primary reason for the seasons on Earth. As the Earth orbits around the Sun, the orientation of its axis relative to the Sun changes, resulting in different parts of the planet receiving varying amounts of sunlight throughout the year. When the Northern Hemisphere is tilted away from the Sun, as it is in January, the Sun's rays hit the Earth at a lower angle, resulting in less direct and less intense heat and light. This means that the Northern Hemisphere receives less sunlight and experiences colder temperatures, resulting in winter.

Hence, in January, Earth is closest to the Sun in its orbit, yet the Northern Hemisphere experiences winter because the Northern Hemisphere is tilted away from the Sun, which is option C.

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Cells are considered cancerous when

Answers

when a series of mutations leads the cell to continue to grow and divide out of control, and, in a way, a cancer cell is a cell that has achieved a sort of immortality

'having two sets of genes in the germ cells is possible' . clarify this statement with reasons​

Answers

Answer:

that I have a a but this is the real account of Finn have a great day today with my mom said you didn't want me there was an amazing person I am so

Two sets of genes can be in the same sell because your family history has that gene so you can get two times.

Observe the dandelions shown here. What plant parts or structures can you identify? What differences can you observe between a dandelion leaf and flower?

Answers

Answer: External plant structures such as leaves, stems, roots, flowers, fruits, and seeds are known as plant organs. Each organ is an organized group of tissues that works together to perform a specific function. These structures can be divided into two groups: sexual reproductive and vegetative.

Many look-alike plants have similar leaves, but dandelion leaves are hairless. They generally have toothed edges that gave the plant its French name, “dent de lion.” Leaves and hollow flower stems grow directly from the rootstock. There is only one flower per stem, verses other branching look-alike plants.

The differences which one can observe between a dandelion leaf and flower are:

Dandelion leaves are hairless, flowers are notThe dandelion leaf has one flower in each stem, flowers do not

The plant parts and structures which are similar between a dandelion  and flowers are:

LeavesStemsRoots, etc

According to the given question, we can see that there is a need to show the similarities and differences between dandelion leafs and flower from the given image in the complete text.

As a result of this, it is important to note that dandelion leaves, although similar to the flower in the image, have hairless leaves and the edges have tooth like structures, which are not found in the flower.

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Which of the following is transcribed into a protein?​

Answers

Answer:

DNA mRNA Amino Acids Polypeptide chains Proteins

Explanation:

DNA is copied into messenger RNA

What type of energy transformation takes place during cellular respiration?

Answers

Answer: The energy transformation that takes place during cellular respiration is the conversion of glucose (chemical energy) to another form of compound with high energy bonds (adenosine triphosphate) that can be readily used by the body. All energy on Earth comes from the sun.

Explanation:

What happened to the oil released offshore? What effect could this have on resource availability for organisms that live near or around the shore?​

Answers

Answer:

Damaged the marine organisms.

Explanation:

The oil released offshore causes damaged to the organisms lives at that region of water because oil is a non-polar solvent which spreads on the sea flood can adversely affected the fish and other aquatic organisms. The resources which are available to the organisms are decreases which leads to lowers the growth of aquatic animals as well as adversely affected the marine ecosystem near or around the sea shore.

Answer:

When oil is released offshore it causes damage to the organisms that live at that area in the water. Oil can spread on the sea floor and can negatively and toxically affect all of the organisms in the water. The resources that these organisms have to survive are decreasing. This leads to a lower survival rate and growth of the organisms. The organisms aren't the only things that are affected because the nearby marine ecosystem they live in is also in danger. If oil spills continue like this, our survival rate is also at risk.

Explanation:

Hope this helps you.

Why does the Sun generally appear to rise in the east, move across the sky, and
set in the west each day? *
O (1) Earth rotates on its axis.
(2) Earth revolves around the Sun.
(3) The Sun rotates on its axis.
(4) The Sun revolves around Earth.

Answers

Answer=(1)Earth rotates on its axis


The Sun, the Moon, the planets, and the stars all rise in the east and set in the west. And that's because Earth spins -- toward the east.

Madison is looking at a cell under the microscope. The organism has only one cell, and it has a nucleus and membrane bound organelles. It has no cell wall and uses flagella for movement. In which kingdom should this organism be classified?

Answers

Answer:

Protista. hope this helps!!! (my answer might be wrong)

Please I need major help! Help me please?!?

Answers

The correct answer is B

1. Which characteristic is shared by all prokaryotic and eukaryotic organisms?
A. the ability to reproduce asexually
B. the ability to make their own food
C. the need for a source of energy
D. the need for oxygen for respiration

Answers

Answer:

I am not sure but I believe it's c.the need for a source of energy

The characteristic is shared by all prokaryotic and eukaryotic organisms are that they need for a source of energy as to maintain the cell processes.

What is the difference between the prokaryotic and eukaryotic organisms?

The number one difference among those  sorts of organisms is that eukaryotic cells have a membrane-certain nucleus and prokaryotic cells do not. The nucleus is wherein eukaryotes save their genetic information.

Mitochondria, for example, are organelles that offer eukaryotes with maximum in their power through generating power-wealthy molecules known as ATP. Prokaryotes lack mitochondria and as an alternative produce their ATP on their mobile floor membrane.Both eukaryotic and prokaryotic organisms get the power they want to develop and keep everyday cell characteristic thru cell respiratory. Cellular respiratory has 3 foremost stages: glycolysis, the citric acid cycle, and electron transport.

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Within a limited area, if the population of a predator increases, the population of its prey is likely to


• remain about the same.




• decrease.


increase.


• become extinct.

Answers

The prey is most likely to decrease! There will be too many predators competing and eating the prey.

Write an argument for describing the human body as a system.

Answers

Answer:

Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. The job of the circulatory system is to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. It consists of the heart, blood, blood vessels,arteries and veins.

Explanation:

Galaxy #7 To which category does galaxy #7 belong? Why does it belong in this category?

Answers

Answer:

Elliptical galaxy category

Explanation:

An elliptical galaxy doesn't have spiral "arms" and has a smooth light that slowly decreases as it stretches out from the center. This means that the center is the brightest and as it goes out in different directions, the brightness decreases.

Hope this helps!

Alzheimer's disease is not a progressive deterioration of the brain cells.
Please select the best answer from the choices provided
ОТ
O
Mark this and return
Save and Exit
Next
Submit

Answers

Alzheimer's disease is a progressive deterioration of the brain cells :

i.e. statement in question is False

Alzheimer's disease is a type of dementia that begins with a gradual loss of one's memory which degenerates into the inability of a patient suffering from the disease and some of these inabilities includes;

Inability to hold on to a conversation and Inability to respond properly to activities within their environment.

Effect of Alzheimer's disease

Alzheimer's disease affects the parts of the human brain responsible for proper speech/language and memory.

Hence we can conclude that Alzheimer's disease is a progressive deterioration of the brain cells : i.e. statement in question is False

Learn more about Alzheimer's disease : https://brainly.com/question/11686508

An allele arises in a population that helps individuals digest cellulose. While the allele starts in only one organism, it increases in allele frequency because it allows organisms that carry it to reproduce more. What is this an example of

Answers

ANSWER: A NATURAL SELECTION.

EXPLANATION:

When allele has direct effects on the organism and the environment, it is termed natural selection. It either affects an organism positively by causing more DNA reproduction, leading to the increase in allele’s frequency, or negatively by decreasing it .

However, this shouldn't be mistakened for genetic drift, where allele increase or decrease is established in the random organisms that survived.

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