what is the function of valves between the heart chambers

Answers

Answer 1
The valves prevent the backward flow of blood. These valves are actual flaps that are located on each end of the two ventricles (lower chambers of the heart). They act as one-way inlets of blood on one side of a ventricle and one-way outlets of blood on the other side of a ventricle.
Answer 2
Tricuspid valve. This valve is located between the right atrium and the right ventricle.
Pulmonary valve. The pulmonary valve is located between the right ventricle and the pulmonary artery.
Mitral valve. This valve is located between the left atrium and the left ventricle. It has only 2 leaflets.
Aortic valve. The aortic valve is located between the left ventricle and the aorta.

Related Questions

How can you use what you have learned in Biology to help yourself, family and the planet?

Answers

Answer: I’m not sure what you’ve learned but for me it’s that you shouldnt leave the lights on when you don’t need them, you should switch off the TV when you aren’t using it, if you see a piece of trash pick it up and throw it in a trash can, and recycle

Explanation: HAPPY (late) EARTH DAY!!

In some carnations, red is co-dominant with white. What might the heterozygote look like?
1. Pink
2. Red with White speckles
3. Red
4. White

Answers

Answer: Red

Explanation:

Sorry if I'm wrong

Which of these processes is most important for a person to replace worn-out body cells?
1. Adhesion
2. Cohesion
3. Mitosis
4. Photosynthesis

Answers

Answer:

Mitosis

Explanation:

Mitosis produces new cells, and replaces cells that are old, lost or damaged for a person's body cells.

4. This photograph was taken in 2004, 24 years after Mount Saint Helens erupted. Compare and contrast this photo with the previous three. What changes do you see in the biotic and abiotic factors? Does anything surprise you about this series of photographs?

Answers

Answer:

In this picture the ground is now completely covered in vegetation and trees are growing back all along the road and sides of the picture. Then there’s little flowers and grass and bushed all over the place. In the other pictures the ground was bare, with the second and third pictures having bushes and other little vegetation starting to grow. Changes in the Biotic Factors: There are now larger trees, there is grass, flowers, small bushes, and other small vegetation growing. Changes in Abiotic Factors: The ground is no longer dust and ash, The dead trunks and branches are covered in vegetation for the most part and are decomposing.

Explanation:

Brainliest Please?!

Many paleontologists hypothesize that present-day whales evolved from ancient ancestors that had four legs and walked on land. Evidence for that
hypothesis would be a sequence of whale-like fossils
A. in which the oldest fossils had flipperlike appendages and the most recent fossil had four limbs.
B. in which the oldest fossil had four limbs and the most recent fossil had flipperlike appendages.
C. that indicate that the ancestors of present-day whales were wiped out during a mass extinction.
D. that indicate that whales evolved before animals with four legs.

Answers

Answer:

B

Explanation:

If the oldest fossils showed legs and the more recent ones had only flippers, it would show the change over time.

help. no links or spam.

Answers

Answer:

D: Genetic material composed of DNA

Hope this helps! :)

D good luck you got this

What is one of the biomolecules for which nitrogen is needed (hint: they help build muscles)?

Answers

It would be amino acids.

One of the biomolecules for which nitrogen is needed and that build muscles are the proteins, and the nitrogen is also found in the DNA and RNA that are present in the cells.

What is the significance of the nitrogen in the protein?

Proteins play many important roles in the body, including building and repairing tissues, and nitrogen is a critical component of proteins, as it is incorporated into the molecule as a part of the amino acids. Without nitrogen, proteins would not be able to form and perform their many important functions so a diet that is rich in protein is important for athletes and bodybuilders to build and repair muscle tissue.

As a result, of the biomolecules for which nitrogen is needed and that build muscles are the proteins, and the nitrogen is also found in the DNA and RNA that are present in the cells.

Learn more about the nitrogen in the protein here.

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Describe the changes in the wolf population:
a) From 1965 to 1970
b) From 1970 to 1975​

Answers

Answer:

Explanation:

1965-70 there population dropped majorly and from 1970-75 the wolf population sprung back up

Answer:

AThere was a steady decrease and then a  sudden increase in population.

B It increased slowly for a few years and suddenly decreased.

Explanation:

Which statement best distinguishes aerobic from anaerobic respiration?
A. Only aerobic respiration involves fermentation.
B. Only anaerobic respiration occurs in the mitochondria.
C. Only aerobic respiration requires oxygen.
D. Only anaerobic respiration produces carbon dioxide.

Answers

Answer:

C. Aerobic respiration

Explanation:

Aerobic respiration occurs when oxygen is present

Anaerobic respiration occurs in the absence of oxygen. Anaerobic respiration is usually associated with fermentation process (eg Alchohol production)

The main difference between aerobic and anaerobic respiration is that aerobic respiration needs oxygen to occur, while anaerobic respiration does not. Option C. Only aerobic respiration requires oxygen.

What is cellular respiration?

Aerobic and anaerobic respiration occurrence depends on the presence or absence of oxygen. Option C. Only aerobic respiration requires oxygen.

Cellular respiration follows two ways, which depend on the presence or absence of oxygen, and both of them begin with the process of glycolysis, which occurs in the cytoplasm and does not need oxygen to occur.

What is Aerobic Respiration?

This type of respiration occurs in the presence of free oxygen. It involves a series of reactions by which pyruvic acid (product of glycolysis) turns into CO₂ and H₂O, producing many ATP molecules.

Aerobic Respiration occurs in mitochondria, and takes place in two steps or stages: Krebs cycle and electron transporter chain.

Glycolysis and Krebs cycle produce electrons. These electrons then travel along the electron transporter chain while releasing energy, and ATP is produced.

What is Anaerobic Respiration?

This is the type of respiration that occurs in the absence of free oxygen.

It is also a series of reactions by which the cell produces 2 ATP molecules by using pyruvate (product of glycolysis).

Anaerobic respiration can occur in two ways: lactic fermentation and alcoholic fermentation.

Lactic fermentation produces lactic acid and 2 ATPAlcoholic fermentation occurs in two steps, and the final products are ethylic alcohol, 2ATP, and 2 CO₂

The whole anaerobic process occurs outside the mitochondria.

Options:

A). Only aerobic respiration involves fermentation. FALSE.

Anaerobic respiration involves fermentation.

B). Only anaerobic respiration occurs in the mitochondria. FALSE.

Aerobic respiration occcurs in mitochondria and anaerobic respiration occurs in the cytoplasm.

C). Only aerobic respiration requires oxygen. TRUE

Anaerobic respiration does not need oxygen.

D). Only anaerobic respiration produces carbon dioxide. FALSE

Alcoholic fermentation produces CO₂ too.

The correct option is C. Only aerobic respiration requires oxygen.

You can learn more about aerobic and anaerobic cellular respiration at

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What struggles do aquatic organisms have that terrestrial ones do not?

If you are not going to actually answer the question don't even bother.

Answers

Answer:

Aquatic animals can be found in water habitats, which can be either fresh or marine. Terrestrial animals can be found exclusively in the land. Aquatic animals respire through gills or their skin. ... The main difference between aquatic and terrestrial animals is their habitat and modes of living

Explanation:

Answer:

being destroyed easily

Explanation:

aquatic organisms are faced with lots of challenges,,,eg.....oilspillage on water bodies,this prevents entry of oxgen into water hence suffocation leading to death,also growth of weeds such as water hyacinth which suck nutrientss and oxygen from water,,,also aquatic krganisms are hunted by lots of predators compared to that of terrestrial

Which of the following increases genetic variation by forming entirely new alleles?

Natural selection
Genetic drift
Mutation
Gene flow

Answers

Answer:

Mutation causes brand new alleles the others just modify the rates at which preexisting alleles appear in the population.

Please help!!!!!!!!!!!!!!!!!!!!

Answers

I think the eagle since it is the top of the food chain?

PLEASE HELP ME ASAP!!
Earth Science - AP_EX

Answers

Answer:

do you like food?

Explanation:

Why do you think there are so many bones in the cranium? Why do you think we are born with separate cranial bones that later fuse together as we grow and develop?

Answers

Hi, rachellelunaa!!

I think the reason we have so many bones is because, firstly, the cranium is such a unique shape that we need multiple bones to form it. Also, another reason we are born with separate cranial bones is that when a baby is born, there is an incredible amount of pressure being administered to the baby during the process. The many unfused bones allow the child's head to be malleable, and therefore preventing damage to the skull and brain. As we grow, we no longer need these bones to be malleable and they fuse together.

I really hope this answers your question!!

The sutures are flexible, the bones can overlap during birthing, preventing the baby's head from pressing against the baby's brain and causing damage.

What are the cranial bones?

Skeletal structure of the head. The cranium, which surrounds and protects the brain, is made up of cranial bones and facial bones (bones that form the eye sockets, nose, cheeks, jaw, and other parts of the face).

The two remaining cranial bones are covered by the frontal bone. The sphenoid bone and ethmoid bone are these.

Behind your eye sockets, the sphenoid bone supports the muscles of your face. At the peak of your nose, between your eye sockets, is the ethmoid bone.

Therefore, preventing damage to skull and brain, we are born with separate cranial bones.

Learn more about cranial bones here:

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Help!!!!!!!!!!!!!!!!

Answers

Answer:

I think is C

Explanation:

hey besties if you would help me with these questions i think i can finally get myself to fully understand and do the rest of the assignment lol (its very late lol and i’m so close to just giving up)

1. explain how body plan and anatomy enables invertebrate to perform essential functions it needs to survive.

2. explain how body plan and anatomy enables chordate to perform essential functions it needs to survive.

3. explain how body plan and anatomy enables primate to perform essential functions it needs to survive.

Answers

Answer:

1)Invertebrates are known as creatures that do not have backbones. Even though these creatures do not have backbones, they have been uniquely designed in order to survive. According to studies, most of these creatures are found in the sea and one of them is the Star Fish or also called as the Sea Star. Starfish's functions and ability to survive is not the same like other animals which make them unique in a different way. The starfish's body is hard and bony for protection purposes and they exist in a variety of colors for camouflage. Their essential functions in order to survive are as follows:

-The Ability to Regenerate: Starfishes have the ability to grow damaged and lost limbs or even their entire body as long as the center part is still present and intact. And this is their way of reproduction as well.

-Having Tube Feet: Its arms are covered with a suction-like tiny cups of tube feet. This unique design of the starfishes enables them to move and secure themselves, especially on rocks and ocean floors.

-Unique Feeding Ability: Sea Stars don't have mouths nor teeth to ingest food. Rather, these creatures have the ability to push open or turn their stomachs out and digest its food. After digestion, their stomachs retract back to their bodies.  

-Vascular System: How starfishes survive does not rely on having hearts, brains and blood. Rather, they use the seawater. The seawater serves as the one the circulates inside the sea stars' bodies and this is when nutrients and oxygen are being transported and absorbed.

2)Keep in mind invertebrates are those who have exoskeletons (outside skeleton) or are hydrostatic (no skeleton). This make up 95% of all animals for example an ant or sponge. For a sponge, all it has is tissues that enable it to allow water to flow out the tops.  

Chordata are anything with vertebrates so a simple fish could suffice. THEY HAVE 4 SPECIFIC CHARACTERISTICS: 1.Notochord 2.Dorsal, hollow nerve cord 3.Pharyngeal slits 4.Muscual, an.al tail  

This is us, we have thumbs, and vertebrates.

3)The bipedalism of primates puts their heads on a higher elevation and this allows them to see predators or prey from afar hence giving them advantage. Opposable thumbs on the hand and feet allow primates to grasp and handle objects effectively hence are able to make use of tools for hunting and etcetera

Explanation:

How does an amino acid-based hormone changes a cells activity

Answers

Answer:

such as glucagon, bind to membrane-bound receptors. The binding of the hormone triggers a signal transduction pathway, a process of molecular changes that turns the hormone's extracellular signal into an intracellular response.

Explanation:

How does an amino acid-based hormone changes a cells activity ?

The majority of amino acid-based hormones, such as glucagon, bind to membrane-bound receptors. The binding of the hormone triggers a signal transduction pathway, a process of molecular changes that turns the hormone's extracellular signal into an intracellular response.

I really hope this helps!! Have an amazing day <3

What’s the answer to this I didn’t mean to click this btw

Answers

It’s the 4th answer, trust me.


Translation occurs in the _______
of a eukaryotic cell.
A ribosome
B chromosome
C cytosome.
D autosome

Answers

Answer:

A

Explanation:

D isn't a real thing in the cell

It’s “A” aka Ribosome

Bc Translation Occurs In A Structure Called The Ribosome, Which Is A Factory For The Synthesis Of Proteins. The Ribosome Has A Large Subunit And Is A Complex Molecule Composed Of Several Ribosomal RNA Molecules And A Number Of Proteins.

Your Welcome And Have A Great Great Rest Of Your Day :D

Plss help!! ASAP I will give u brainlist

Answers

Answer:

Sedimentary

Explanation:

The Go' for the reaction Citrate  Isocitrate is +6.64 kJmol-1 . The Go' for the reaction Isocitrate  α-Ketoglutarate is -267 kJmol-1 . Calculate the Go' for the conversion of citrate to α-ketoglutarate?

Answers

Answer:

ΔG°' for the conversion of citrate to α-ketoglutarate = - 273.64  kJmol-1

Explanation:

ΔG°' for Citrate is +6.64 kJmol-1

ΔG°' for Isocitrate is -267 kJmol-1

ΔG°' for the conversion of citrate to α-ketoglutarate = ΔG°' for product - ΔG°' for reactant

ΔG°' for the conversion of citrate to α-ketoglutarate = -267 kJmol-1 - (+6.64 kJmol-1)

ΔG°' for the conversion of citrate to α-ketoglutarate = - 273.64  kJmol-1

What is true of the genetic makeup of all body cells in the human body except for sex cells?

Answers

Answer:

It is the same no matter what the cell type. It is random even within the same cell type. It is used to sort cells into organs based on chromosomal differences.

Explanation:

What is rule of dominance? ​

Answers

Answer:

Mendel's law of dominance states that in a heterozygote, one trait will conceal the presence of another trait for the same characteristic. Rather than both alleles contributing to a phenotype, the dominant allele will be expressed exclusively.

Explanation:

Hope this helps:)

Work is done when you
A .you lift a book
B .you stand on the floor
C .you hold a box
D .you push against a wall

Answers

the correct answer is A. you lift a book

define the word corrosion ​

Answers

Answer:

Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment

Explanation:

i hope you like give brainliest if you do

Answer:

the process of corroding metal, stone, or other materials

corroding: destroy or damage (metal, stone, or other materials) slowly by chemical action.

The process of destroying metal, stone, or other materials.

Explanation:

___ is the process the body uses to break down food

Answers

Answer:

Digestion

Explanation:

Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream

Digestive system is the answer

This is the ultimate source of our energy

Answers

Answer:

yes thats right, its the sun

The sun. Is the right answer

In the early 1900s, three species of goatsbeard wildflowers, T. dubius, T pratensis, and T. porrifolius, were introduced to the United States. Each of the species had a chromosome number of 2N. In the 1930’s, a few populations of offspring from the original wildflowers were identified as having a chromosome number 4N. What does this data suggest about speciation.
A. Speciation has occurred because the original species of wildflowers produced populations of viable offspring.
B. Speciation has occurred because breeding between the offspring and original populations would not be possible.
C. Speciation has not occurred because the offspring of the original wildflowers were not introduced into a new area.
D. Speciation has not occurred because the offspring inherited identical genetic information to the original wildflowers.

Answers

Answer:

B. Speciation has occurred because breeding between the offspring and original populations would not be possible.

Explanation:

Speciation has occurred in the species due to no breeding between the offspring and original populations because the offspring and original species has different number of chromosomes in their DNA. Due to this difference in the chromosome number in the DNA, there is no chance of breeding between offspring and original species. Speciation is the evolutionary process by which populations of organism evolve with the passage of time and become different from the original species.

Victor put a match on a balance and found that its mass was 6.0 grams. Then he lit the match and put it out after a few seconds.



He put the partially burned match on the balance again. This time, its mass was 4.5 grams.

Which of the following best explains what happened as the match burned?
A.
Some of the mass was destroyed by the fire.
B.
The mass of the match combined with the mass of the fire.
C.
The matter moved to a different part of the match.
D.
Some of the matter changed from solid to gas and went into the air.

Answers

Answer: It releases oxygen and heat. The answer is C

Stored inside the match head is another chemical called “potassium chlorate”. When it gets hot, it releases a lot of extra oxygen and heat. This makes the match head burn quickly and strongly. When you put it all together the heat, the fuel, and the oxygen  you get a flame. Matter does not go when something is set on fire. Matter is always the same.  Burning is a chemical process. The flames are caused as a result of a fuel undergoing combustion (burning). (CC BY-SA 2.5; Einar Helland Berger for fire and Walter Siegmund for ash).  

Answer:

Explanation:

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how it going long time no talk

12
1 point
Which type of cell must contain a mutation in order for the mutation to be passed on to offspring (select 2)?
sperm cell
egg cell
skin cell
nerve cell
brain cell
blood cell

Answers

sperm and egg cells
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