The vavle preventing blood from re entering left ventricle is

Answers

Answer 1
The valve that prevents blood from re-entering the left ventricle is the mitral valve.

The valve on the right ventricle is called the tricupsid valve.

I hope this helps! I'm happy to answer any other questions you might have :)

Related Questions

Which statement explains the difference between a nerve that is connected to the skin and a nerve that is connected to a muscle? The nerve that is connected to skin is a motor neuron; the nerve that is connected to a muscle is a sensory neuron. The nerve that is connected to skin receives stimuli information from the external environment; the nerve that is connected to a muscle receives processed stimuli information from the brain. The nerve that is connected to skin is part of the central nervous system; the nerve that is connected to a muscle is part of the peripheral nervous system. The nerve that is connected to skin helps the body maintain homeostasis; the nerve that is connected to a muscle supports the body so it can stand upright.

Answers

The correct statement is The nerve that is connected to skin receives stimuli information from the external environment; the nerve that is connected to a muscle receives processed stimuli information from the brain.
The nerves connected to the skin are usually sensor neurons, more precisely their endings which react to heat and cold, touch, pressure, vibration or tissue injury. The nerves connected with muscles are motor efferent nerves which are responsible for sending out commands from the CNS to the body and thus, stimulating muscle contraction.

Answer:

Behavior that does not involve the "higher" centers of an animal's brain.

When plants make "food" by photosynthesis, they change the energy in sunlight to?

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During photosynthesis, light energy, combined with water and CO2 gas, make a sugar called glucose.

Glucose has to go through another process called cellular respiration in order for the glucose to be changed into usable energy that would be useful for the plant. 

Pray this helps you. :)

Plants change sunlight into chemical energy through photosynthesis, creating glucose and oxygen from water and carbon dioxide.

When plants make "food" through photosynthesis, they change the energy in sunlight into chemical energy. This fascinating process involves plants taking solar energy and using it to combine water (H₂O) and carbon dioxide (CO₂) to create glucose (C₆H₁₂O₆), which is a carbohydrate, and oxygen (O₂). The light energy harnessed from the sun is transformed into chemical potential energy stored in the glucose molecules. Autotrophs, like plants, capture a specific wavelength of sunlight through chlorophyll and use it during photosynthesis to build these carbohydrate molecules. The glucose produced can then be used by the plant for its growth and development or stored for later use, supporting the energy needs of the plant itself and herbivores that consume the plant matter.

What is the major gas that increase the greenhouse effect?

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The major has that increases the Greenhouse Effect is Carbon

A steady supply of _________ is needed throughout the body in order for electrons to be accepted at the end of the electron transport chain.

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Answer: Oxygen

The cells use oxygen molecules during oxidative phosphorylation. Oxidative phosphorylation is the final stage of cellular respiration which is made up of two closely connected components: 1) the electron transport chain and 2)chemiosmosis.

Oxygen sits at the end of this electron transport chain, where it accepts electrons and picks up protons to form water. If oxygen is not available to accept electrons, the electron transport chain will cease running, and ATP Adenosine triphosphate) will no longer be produced by chemiosmosis. Without enough ATP, cells can’t carry out the reactions they need to function, causing death.

Which term do geographers use to classify an area with unifying physical characteristics?

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A physical Region is the term used by geographer to classify an area with unifying characteristics. Regions are areas that are extensively characterized by physical features, human influence and relationship between humanity and the environment. An example of a physical region is the Rocky Mountain in the west.






Answer:

physical region/region

Explanation:

why will a radioactive rock never become completely stable?

Answers

Technically speaking, depending on the sample, the rock could become “stable.”

The radioactive decay of a radioisotope is expressed as a half-life equation; half-life is the colloquial term that describes how long it will take for half of the radioisotope to decay into another isotope or element. For example (if I remember correctly), Carbon-14 has a half life of 5,780 years. This means that in a 100% sample of C-14, after 5780 years passes, only 50% of that isotope would remain; another 5780 years, and only 25% would remain (half of half). Based on this principle, it seems like a sample could never fully decay because there’s always an amount that smaller than the current amount.

However, if the sample has a very short half life (milliseconds or nanoseconds) the sample would reach nigh-full decay eventually. At this point, it is considered “stable.”

Excess of neutrons and protons cause large amount of energy in the nucleus, which cause the instability of the radioactive rock.

What is a radioactive rock?

Radioactive rock consist of atoms of radioisotopes like thorium and uranium.

Excess neutrons or protons in an element's atoms provide extra energy in the nucleus.

That cause the atom to become imbalanced or unstable.

Whether and how radioactive elements can also become stable.

Radiation is emitted by the unstable nuclei of radioactive atoms.

Thus, the because of the nucleus, of the radioactive rock never become completely stable.

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Blood rich in oxygen and nutrients are transported from the placenta to the fetus by the

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dddddddddddddddddddd

Worldwide how many people are estimated to die each year due to air pollution

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Around 7 million per year.
6.5 Million are killed every year.

There are about 100 calories in 30 grams of swiss cheese. ruth ate 70 grams of this cheese. about how many calories were in the cheese that she ate if the number of calories varies directly as the weight of the cheese?

Answers

Answer: 233.33 calories

The cheese in this question has 100 calorie/30 grams and Ruth ate 70 grams of that cheese. To find the number of calories that Ruth ate, then you just need to multiply the mass with the calorie. The calculation will do as follow:
70grams * (100 calorie/30grams)= 233.33 calories

Body tissue that is connected to and moves the bones in the body tendon 2. the ability of a muscle to move a weight repeatedly, or for an extended period of time muscle endurance 3. the increase in the size of a muscle fiber in response to resistance training atrophy 4. the most amount of weight a muscle can move at a single time hypertrophy 5. the decrease in the size and strength of a skeletal muscle when it is not used skeletal muscles 6. strong body tissue that connects the muscles to the bones muscle strength

Answers

The body strong flexible tissue attaching the muscle to the bone - Tendon
When a muscle is able to move a weight rapidly, repeatedly, and for an extended period of time - Muscle Endurance 
When the muscle decreases in size and strength - Atrophy
When the skeletal muscle are forcefully exercised and in result enlarge - Hypertrophy

Termites are insects that chew on wood. Based on a termites diet, which of the following statements would you expect to be true about its digestive system?

a.) The termite's digestive tract produces fast-acting meat-digesting enzymes.
b.) The termite has flattened molars that grind wood.
c.) The termite has a jaw bone and muscles that are adapted for side-to-side grinding movements.
d.) The termite has a symbiotic relationship with cellulose-digesting microorganisms in its digestive tract

Answers

I’d say the answer is D because they don’t eat meat and B and C have nothing to do with the digestive system

Answer: d.) The termite has a symbiotic relationship with cellulose-digesting microorganisms in its digestive tract.

Explanation:

Termites are the wood eating parasites. They eat wood to meet their nutritional demands. Although there are enzymes present inside the termites which can partially digest the cellulose. But they exhibit a symbiotic relationship with the bacteria present in their gut. The bacteria helps in digestion of rest of the cellulose. In return the bacteria receives shelter and food.

The distribution of terrestrial biomes on earth depends mostly on ________.

Answers

The distribution of terrestrial biomes on earth depends mostly on Both temperature and rainfall. Terrestrial biomes are defined in a large part by the plants that live in it. This biome is defined by its climate and dominant vegetation, and includes; grassland, tundra, tropical rain forest, desert and deciduous and coniferous forest. 
Final answer:

The distribution of terrestrial biomes on Earth depends on abiotic factors such as temperature and precipitation.

Explanation:

The distribution of terrestrial biomes on Earth depends mostly on abiotic factors such as temperature and precipitation. These factors determine the types of plants and animals that can survive in different regions. For example, tropical wet forests thrive in warm, moist environments, while deserts have low biodiversity due to extreme temperatures and lack of water.

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What is the equation with which you can calculate population density?

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Population density is the number of organisms in the population in a certain area:
[tex]population \: density = \frac{total \: population}{total \: land \: area} [/tex]

The fluid-like substance contained within the cell membrane, the nucleus not included, is _____. cytoplasm dna rna tissue brainly

Answers

cytoplasm is the gel like substance that is inside the cell membrane that holds all the organelles

Answer:

Cytoplasm is the correct answer

Explanation:

A thick fluid or solution enclosed by cell membrane that fills a cell is called Cytoplasm. Cytoplasm help a cell to maintain it shape. It is composed of water, salts and protein mainly. All cell organelles are found in the cytoplasm, it is highly organized.

Substances like enzyme found in the cytoplasm, help breaking down waste and also helps in metabolic activity.

Which is visible evidence of energy passing through water?

a sea arch

a density tide

a wave

the Coriolis effect

Answers

ANSWER
A wave
EXPLANATION
Due to the earths moon, tidal waves increase in energy.
#mark me brainliest please

The correct answer is option C, A wave

Reason -

Waves in water bodies are produced by the entrapped solar energy as of due to the wind blowing across the surface of a water body. These waves are used as a renewable source of energy. The water particles vibrate to transfer the energy in the form of wave which generally move in the forward direction.

Describe the outer covering of a reptile's egg.

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hard shell like most

The outer covering of a reptiles egg is hard to protect it from harm while growing. :P

I hope this helped :D

Which structure of a paramecium holds a "reserve copy" of all the cell's genes?

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The structure of a paramecium that holds a "reserve copy" of all the cell's genes is the micro nucleus.
The micro nucelus is one of the two kinds of nuclei the paramecium has. The other is the  large ellipsoidal nucleus called a macronucleus. Every paramecium must have at least one small nucleus called a micronucleus. The micronucleus is a storage site for the germline genetic material of the organism.

In a Paramecium, the micronucleus holds a 'reserve copy' of all the cell's genes and is essential for sexual reproduction, as well as the formation of a new macronucleus.

In a Paramecium, the structure that holds a "reserve copy" of all the cell's genes is the micronucleus. While the macronucleus manages most of the biological functions such as asexual binary fission, the micronucleus is critical for sexual reproduction and serves as a genetic reservoir. During the sexual reproduction process known as conjugation, the micronucleus undergoes meiosis and subsequent exchange of genetic material with another Paramecium, ensuring genetic diversity. Following conjugation, the micronucleus gives rise to a new macronucleus, thus supporting cellular rejuvenation and ensuring a continuity of the genetic blueprint.

__________ is a bacterium that lives in our digestive systems, where it has a beneficial role; but it becomes dangerous when our food or water is contaminated with feces. sciemce

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The answer would be: Escherichia coli

Escherichia coli is normal flora of the human gastrointestinal tract. Escherichia coli has a beneficial role because they can prevent infection of other harmful bacteria and produce some substance like vitamin K. But some strain of E. coli is dangerous and could cause bloody diarrhea, vomiting, and stomach ache.

TRUE OR FALSE IF FALSE WRITE THE CORRCT WORDS FOR THE FALSE UNDERLINED ONE TO MAKE CORRECT::::::::::::The purpose of the long hairlike projection called a flagellum on a protozoan is for sexual production. ( sexual reproduction is underlined )

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false because protozoans reproduce asexually hope it helps

your so dam dramatic.

An ecosystem is effected by many factors. Oxygen, soil, water, amount of sunlight, and temperature are some examples. What type of factor are these examples?

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I believe that these are ABIOTIC factors since they are not living.
The answer to this is abiotic.

The reason it is abiotic is because they are consider non- living things which includes temperature, sunlight, oxygen, soil and water. 

Hope this helped :)
Have a great day 

Help me please!

Darwin hypothesized that there are definite steps to natural selection. Consider the model of bacterial resistance to antibiotics. How would Darwin explain step I?

Question 1 options:

Bacteria adapt to environmental changes.


Some bacteria alter their DNA in response to environmental changes.


In any population, some individuals are weaker than others.


In any population, genetic variation exists.

Answers

looks like u r doing ur homework
Answer:
Two main types of bacteria on the basis of colur have shown in figure. Red type bacteria are more resisrtant than orange type bacteria. According to Darwin theory of natural selection, resistant bacteria are more favoured by nature because they can survive and not affected by drugs. As a result they will survive while orange will finish with the passage of time. Now reb bacteria as they survive will produce offspring and increase their population because the are survival of the fittest.

Which two systems provides the molecules needed for the metabolic activity that takes place at ribosomes?

Answers

The answer is, digestive and circulatory.

Final answer:

Ribosomes in cells require specific molecules like tRNA and mRNA for metabolic activities.

Explanation:

Ribosomes are the cellular structures responsible for protein synthesis in living cells. They consist of large and small subunits composed of ribosomal RNA (rRNA) and proteins. The molecules needed for the metabolic activity at ribosomes are transfer RNA (tRNA) and messenger RNA (mRNA), along with various enzymatic factors that contribute to the translation process.

what is cytokinesis

Answers

Cytokinesis is the part of the cell division process during which the cytoplasm of a single eukaryotic cell divides into two daughter cells.

Why anatomical and molecular features often fit a similar nested pattern.in addition descibe a orocess that can cause this not to be the case

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Anatomical and molecular features often fit a similar pattern due to Homology. Homology is the existence of shared ancestry between two structures or genes in a different species. 

A process that can cause this not to be the case is Convergent Evolution.
Convergent Evolution occurs when two unrelated species independently evolve similar traits to cope with evolutionary changes. 
-_-...............................

The cells that make up a human body need oxygen at all times. During periods of exercise and activity, the amount of oxygen needed increases. To meet this increased need, the number of breaths per minute during exercise can be sharply higher than the number of breaths per minute while at rest. Which term BEST describes the process by which cells work together to maintain the needed level of oxygen?
A) homeostasis
B) metabolism
C) osmosis
D) respiration

Answers

the correct is homeostasis

What is likely phenotypic ratio resulting from a dihybrid cross with alleles showing epistatic interactions?

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The answer is one (1) phenotype. This is because epistasis interaction of gene alleles involves the masking of one phenotype of an allele of a gene (at one or more loci) by the other.  Alternatively, the epistatic alleles may interact to cause a modification of a phenotype.






Final answer:

The phenotypic ratio from a dihybrid cross which includes epistatic interactions differs from the non-epistatic 9:3:3:1 ratio, with the actual ratio depending on the specific nature of the epistatic relationship between the genes involved. One gene may mask the effects of another, altering the expected ratios of phenotypes in the offspring.

Explanation:

The phenotypic ratio resulting from a dihybrid cross with alleles that show epistatic interactions will differ from the classic 9:3:3:1 ratio seen in Mendel's dihybrid crosses with non-interacting genes. This is because epistasis is a form of gene interaction where one gene masks or modifies the expression of another. For example, if one gene's expression is completely dependent on another gene, you might see a modified ratio such as 9:3:4, where the 4 represents the epistatic effect.

In a case of epistasis similar to the one described by the figure, where one gene (C) masks the expression of another (A) for a trait like coat color, the presence of the C allele is necessary for color to be expressed. If it's absent (cc), no color is expressed regardless of the A gene's alleles. Here, the phenotypic ratio can deviate significantly from the typical 9:3:3:1 observed in a dihybrid cross without epistasis. The actual ratio will depend on the specific epistatic relationship between the genes involved.

It's important to remember that the independent assortment of genes and Mendelian inheritance can be altered by various genetic interactions, including epistasis, which must be taken into account when predicting phenotypic ratios in genetics problems.

why do two-dimensional maps of earth have distortions? A. Earth is three-dimensional, but maps are two-dimensional B. cartography is an inexact science C. cardinal directions do not apply to two-dimensional maps D. They do not include lines of longitude

Answers

A. earth is 3d and maps are 2d

Answer: Option (A)

Explanation: It is because we cannot represent a three-dimensional object in a two-dimensional maps, without distortion. So in order to reduce this distortion various types of projections are being used such as Mercator projection, Interrupted map projection and Azimuthal projection that helps us in reducing distortion and transform a 3-D object to 2-D.

According to the hardy-weinberg principle, if 75% of the alleles in the gene pool are a1 and 25% are a2, what is the proportion of individuals with genotype a1a2 in this population?

Answers

Frequency of allele a1 is 75%, p=0.75
Frequency of allele a2 is 25%, q=0.25
 If a population is in Hardy-Weinberg equilibrium then:
p2+2pq+q2=1
p2  is the frequency of genotype a1a1 (homozygous),
2pq is the frequency of genotype a1a2 (heterozygous),
q2 is the frequency of genotype a2a2
The proportion of individuals with genotype a1a2 is then 2*0.75*0.25=0.375 (37.5%).
Final answer:

According to the Hardy-Weinberg principle, the proportion of individuals with genotype a1a2 in a population can be calculated using the formula 2pq, where p is the frequency of allele a1 and q is the frequency of allele a2.

Explanation:

According to the Hardy-Weinberg principle, the proportion of individuals with genotype a1a2 can be calculated using the formula 2pq, where p is the frequency of allele a1 and q is the frequency of allele a2. In this case, the frequency of a1 is 0.75 and the frequency of a2 is 0.25. Therefore, the proportion of individuals with genotype a1a2 is 2(0.75)(0.25) = 0.375, or 37.5%.

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Cleaner fish feed off the algae fungi and other microorganisms that are found in larger fish. Other species of fish which look like cleaners are able to approach the larger fish and remove large bites of flesh. If the look alike population outnumber the cleaner fish the A.microorganisms on large fish would decrease B.cleaners and mimics would interbreed C.behavior of large fish would change D.cleaner population would increase

Answers

The answer is A microorganisms on large fish would decrease when the look alike outnumber the cleaner fish as the look alike will be able to remove large bites of flesh in the larger fish. Hope this is the answer you are looking for.

Answer:

C.behavior of large fish would change

Explanation:

thats what jlab says the answer is

What term is given to the actual name of a color?

Answers

Hue. Hope this helps
Other Questions
Cartels are easy to form and to maintain. a. True b. False How did the test offensive affect the perceptions of the Vietnamese war within the United States Beginning in the 1950's, expanded trade not only exported american goods but also Read the excerpt from the namesake. "that you want us to call him nikhil." "that is correct." mrs. lapidus nods. "the reason being?" "that is our wish." "i'm not sure i follow you, mr. ganguli. do you mean that nikhil is a middle name? or a nickname? many of the children go by nicknames here. on this form there is a space" "no, no, it's not a middle name," ashoke says. he is beginning to lose patience. "he has no middle name. no nickname. the boy's good name, his school name, is nikhil." mrs. lapidus presses her lips together and smiles. "but clearly he doesn't respond." "please, mrs. lapidus," ashoke says. "it is very common for a child to be confused at first. please give it some time. i assure you he will grow accustomed." which best states the conflict revealed by this conversation? an internal emotional conflict between ashoke's cultural values related to education and the needs of his child an external conflict between mrs. lapidus and gogol over his wish to be called by a traditional indian name an external cultural conflict between the traditional schooling expectations of mrs. lapidus and ashoke an internal conflict between mrs. lapidus's expertise as an educator and her wish to respect ashoke's cultural traditions Which characteristic of Macbeth's, if changed, would most change the theme of this scene?A.His lack of sympathy toward others B.His belief in his own abilities C.His obligations to his wife D.His loyalty to his superiors Brian wants to conduct an online search using a certain phrase he intends to use the word books that belong to the 1800's in his search how should he use the word that in his search? 5 to 2 = __ to 4 and also 14 to 21 = __ to 15 Phosphorus-32 has a half-life of 14.3 days. how many grams remain from a 10.0 gram sample after 30.0 days? given f(x)=6x+2 and g(x)=x^3 what is f(x) x g(x)?a. 6x^4+2b. 8x^2c. 6x^4+2x^3d. 6x^3+2 When we have a factor that always causes a disease and also demonstrates that the disease cannot occur without that factor, we say that it is ____? hint: this situation does not occur in reality. necessary and sufficient necessary but not sufficient sufficient but not necessary neither sufficient nor necessary? At the beginning of scene 3, what is friar lawrence talking about and working with? HELP WITH THE CORRECT ANSWER 10 points and brainliest to best answerplz answer in this form |\/top left:top right:bottom left: bottom right: what solution does pope provide for the new American bicycle in chapter 1 wheels of change by sue Macy? what did Native Americans tribes have in common?A. they lived in the same type house.B. they got food the same way.C. they inhabited the land before the settlers arrived.D. they spoke the same language. What is the heaviest element that can be fused in the core of a star? How did William Penn come in possession of land in the New World? A. The king owed his father money. B. He explored it and claimed it for himself. C. He bought it from the Virginia Company. D. He inherited it from his father. Question 2(Multiple Choice Worth 5 points)Photograph of a settlement in Haiti. A building with a cross is seen at the top of a hill. People live in primitive tents at the bottom of the hill. 2012 The Associated PressThe town in this photograph is named Duvalierville. It was founded by the Haitian President Francois "Papa Doc" Duvalier. What does this image say about Duvalier's approach toward governing? He wanted to modernize Haiti. He focused on improving Haiti's infrastructure. He did not focus on human welfare programs. He did not approve of poorly planned projects. Who or what does the leopard symbolize in benin iconography? Which statement best describes the effect of replacing the function f(x)=2^x-2 with the function g(x)=2^x+3A.) The graph shifts 1 unit upB.) The graph shifts 5 units leftC.) The graph shifts 1 unit rightD.) The graph shifts 3 units right