The chamber of human heart is 2 ........ and 2 .........​

Answers

Answer 1
two atria and two ventricles..

Related Questions

why does individual commit crime?​

Answers

People commit crimes for many different reasons. whether it is for the excitment and thrill of it or whether they were forced to or peer preasured on by another person. Maybe they robbed a bank cause they needed money or they were under the influence of drugs or alchohol

The causes of crime are complex. Poverty, parental neglect, low self-esteem, alcohol and drug abuse can be connected to why people break the law. Some are at greater risk of becoming offenders because of the circumstances into which they are born.

Why is it necessary to reduce the number of chromosomes in gametes, but not in other cells

Answers

Answer:

The reduction of chromosomes in the gametes is necessary to make sexual reproduction possible, in which each parent contributes half of their chromosomes and in fertilization a cell with the complete amount of chromosomes is produced, the zygote.

Explanation:

The reduction of chromosomes to form gametes is done by meiosis, a reductive cell division. Sex cells or gametes are haploid cells, i.e. with half the chromosome charge, as each parent must contribute a gamete in the reproductive process.

The union of the parents' gametes is called fertilization and its product is the zygote, whose chromosome charge is complete or diploid.

For a diploid zygote to be formed, it is necessary for the sex cells or gametes to be haploid, or with half of the chromosomes of the species..

The genetic content built of proteins and nucleic acid found in the nucleus of cells are called chromosomes.

The reduction of the chromosome is essential for sexual reproduction.

In this sort of reproduction gametes from each parent fuse to form offspring.

Each parent provides half the number of chromosomes (n) to form a complete offspring with the total set of chromosomes (2n).

In the process of gamete formation chromosomes, get halved due to meiosis.

The reproductive gametes from both the parent combine via fertilization and form the diploid offspring.

Therefore for a diploid offspring to be formed the gametes need to be haploid.

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What a consequence brings the fact that the cerebral cortex is more developed in humans than in animals

Answers

Answer: humans have a very high brain-weight-to-body-weight ratio, but so do other animals. ... Other intelligent animals, such as monkeys and dolphins, also have these folds in their cortex, whereas mice have smooth brains, he said. Humans also have the largest frontal lobes of any animal, Holland said.

Explanation:

Please I need help this is due tomorrow

Answers

Answer:

When they swap places.

Explanation:

Since they both create new combinations of genes.

i don't know much about this but i do hope it helps!

CAN ANYONE HELP ME PLEASE WITH THE QUESTION ABOVE

Answers

Answer:

c

Explanation:

Answer:

The population of predators most often eliminates the population of prey.

Explanation:

This organelle removes and recycles waste from the cell
O. Cytoplasm
O. Golgi Apparatus
O. Lysosome
O. Ribosome

Answers

Answer: Lysosome

Explanation: A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria. (Hope this helps!)

Help please ASAP !!

How do scientists know that Earth is currently in the middle of an ice age or interglacial period?

Select one

A. Due to climate change , and snow are rapidly melting .

B. Carbon dioxide levels are decreasing , which is causing Earth's temperature to become cooler

Answers

A. The argument recently in science has been the rising levels of carbon dioxide which is major component of climate change

I NEED HELP ASAP!!
Which specialized structures transport a large volume of nutrients throughout spermatophytes?
anthers
pistils
roots
veins

Answers

Answer: Veins

Explanation:

Answer: Veins.

Explanation: All spermatophytes have veins, which are structures that allow a larger volume of nutrients to be transported.

What is found in the medullary cavity of an adult long bone?

1. Red bone marrow
2. Fat
3. Calcium
4. Blood vessels

Answers

The answer is .......

a) Red bone marrow

what do you think the rock in Earth’s mantle is like? Is the mantle made of hard, solid rock or soft, solid rock? Explain your ideas.

Answers

Answer:

If the mantle is made out of soft rock, then I think it would melt due to the heat, but if it was hard, it would just burn, so I firmly believe the rock is hard.

Explanation:

Mantle is a layer on planetary body which is made up of minerals. Mantle is solid as it is made up of heavy metals and solid rocks which makes it rigid.

What is Mantle?

A mantle is a layer inside a planetary body bounded by a core and on the above by a crust. Mantle is made up of rock or ices, and is generally the largest and most massive layer of any planetary body. Mantles are on the planetary bodies that have undergone differentiation by density.

The mantle is composed primarily of heavy metals, such as iron, nickel, and others. The state of the mantle was described as plastic. Many divide the mantle into further such as  the asthenosphere and lithosphere.

Mantle rocks are soft and able to move over the course of millions of years at great depth and pressure. The transfer of heat and material in the mantle helps to determine the landscape of the planet.

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How do meteorologists indicate different types of weather fronts on a weather map?

Answers

Answer:

A stationary front is depicted by an alternating red and blue line with a triangle on the blue portion and half-moon on the opposite side of the red portion of the line. A cold front (or warm front) that stops moving becomes a stationary front.

Explanation:

Explain the structural organization of chloroplasts

Answers

Answer:

The chloroplast has an inner and outer membrane with an empty intermediate space in between. Inside the chloroplast are stacks of thylakoids, called grana, as well as stroma, the dense fluid inside of the chloroplast.

Explanation:

Hope it helps.

All of the following statements support the cell theory EXCEPT?

Answers

All of the following statements support the cell theory except all cells contain a nucleus. Thus, the correct option for this question is B.

What is the Cell theory?

The cell theory was proposed by two famous scientists. i.e. M.J. Schleiden and T. Schwann. There are three assumptions that fall under the cell theory.

All living organisms whether plants or animals are made up of cells. A cell is the smallest unit of all living organisms. It is the basic structural and functional unit of life.

Cell theory was further refined by German biologist Rudolf Virchow in 1855. According to him, all cells are arising from pre-existing cells.

According to the three assumptions given above, the one which is not matched as per the options is that all cells contain a nucleus.

Therefore, the correct option for this question is B.

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The statement that is not considered as cell theory is all cells contain a nucleus. The correct option is L.

What is cell theory?

Cell theory is basically a biological theory first given in the mid-nineteenth century that states that living organisms are made up of cells, that cells are the basic structural/organizational unit of all organisms, and that all cells originate from pre-existing cells.

According to the cell theory, all biological organisms are made up of cells; cells are the basic unit of life, and all life evolved from preexisting life.

The cell theory is now so well-established that it serves as one of biology's unifying principles.

Theodor Schwann proposed the classical cell theory in 1839. This theory is divided into three parts. The first section asserts that all organisms are made up of cells.

Thus, the correct option is L.

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In your own words, please explain how the process of meiosis leads to siblings that are not clones of each other.In your own words, please explain how the process of meiosis leads to siblings that are not clones of each other.

Answers

Explanation:

The process of cell division by which most of cells divide for growth is called mitosis.

In this process, each cell called mother cell divides to form two identical daughter cells. The daughter cells have the same number of chromosomes as mother cell. It helps in growth and repair of tissues in organisms.

Specific cells of reproductive organs or tissues in animals and plants divide to form gametes., which after fertilisation give rise to offspring.

They divide by a different process called MEIOSES.

Which involves two consecutive divisions. When a cell divides by meiosis it produces four new cells instead of just two .

The new cells only have half the number of chromosomes than that of the mother cells.

Hope you understood!

During cellular respiration, cells convert the energy stored in glucose to make the energy molecule ATP, as shown in the equation. Less than 40% of the energy found in glucose is actually converted into ATP. What happens to the other 60% of this energy

Answers

Answer:

the other 60% of energy is stored away for further use in the cell

Explanation:

i hope im right

In the cell from glucose, 40% of energy is utilised to make ATP and the rest 60% is used in the process of making ATP. So 100% of glucose cannot be converted into ATP.

How does ATP form from glucose?

Glucose is a major source of energy. It has carbon, oxygen, and hydrogen . Due to the presence of oxygen, it can easily break down to produce energy during times of need.

Glucose is broken down into pyruvate by the process of glycolysis. In this process, the net gain is 2 ATP. Pyruvate converts into acetyl CoA. ATP is required in this process. Acetyl CoA enters the Krebs cycle.

To enter the mitochondria, ATP is required. Acetyl CoA enters the krebs cycle and electron transport chain.  The FADH₂ , NADH are broken. Proton gradient is formed due to the electron movement. Then ATP is formed due to the proton gradient across the inner mitochondrial membrane . To make ATP a lots of ATP have used in the process. So net gain of ATP of a glucose is 40% as rest 60% has used in the process .

Hence, 40% of energy of glucose make ATP, and the rest 60% is used in the process of making ATP

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In the picture,how does the thermal energy definitely flow?

Answers

I think it’s b since they are trying to warm the snow up so they can be warm.

If there are 10,000 kCal of energy available in the producers, how much energy would be available to each of following levels of consumers?
Explain what happens to the energy as it moves from producer to the tertiary consumer.

Answers

Answer:

Primary Consumer - 1000 kCal

Secondary Consumer - 100 kCal

Tertiary Consumer - 10kCal

Explanation:

Each time a consumer consumes the previous organism, the energy that is consumed is ten percent of the last one. This is called the ten percent rule.

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Many people don't get enough vitamin D and calcium, which can cause bones to be fragile. The lack of vitamin D and calcium is an example of a

A. hereditary disease.
B. genetic disease.
C. toxicity.
D. deficiency.

Answers

The answer is B hope this helps

Answer:

deficiency

Explanation:

PENN

It is known that complex carbohydrates provide more sustained energy over time than simple sugars such as sucrose. Complex carbohydrates are polysaccharides, which are long chains of smaller sugar molecules bonded together. Simple sugars are monosaccharides that contain only one molecule.
Why do complex carbohydrates provide more energy over time versus simple carbohydrates?

Answers

Answer:

Complex carbohydrates contain longer chains of sugar molecules than simple carbohydrates. The body converts these sugar molecules into glucose, which it uses for energy. As complex carbohydrates have longer chains, they take longer to break down and provide more lasting energy in the body than simple carbohydrates

Explanation:

Answer:

A.) Complex carbohydrates have more chemical bonds to break than simple sugars, which takes longer for the body to digest and provides more units of energy for the body to use.

Proof:

The diploid number of chromosomes in a species is always what

Answers

Diploid meaning 2. Is a cell/ organism that has paired chromosomes, one from each parent. Humans have 23 of these.

A diploid cell always contains two complete sets of chromosomes, which is described as 2n.

What is a diploid cell?

Two complete sets of chromosomes are present in a diploid cell. The majority of human cells are diploid, with 23 chromosomal pairs totaling 46 chromosomes. This consists of a pair of sex chromosomes and 22 pairs of autosomes. The mother and father each contributed one copy of each pair of chromosomes to the individual.

Through the process of mitosis, diploid cells replicate and maintain the same number of chromosomes by making a copy of each chromosome and dividing their DNA equally among their daughter cells.

Blood cells, skin cells, and muscle cells are examples of diploid cells. These cells are called somatic cells. Different organisms have different numbers of chromosomes.

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Please tell me how does water flow through sponges in order​

Answers

Answer:

Small and tube shaped, water enters the sponge through dermal pores and flows into the atrium. Choanocyte flagella create the current to expel it through a single osculum. Note that water enters the sponge through a modified cell known as a porocyte.

Explanation:

Hope this helped, Have a Wonderful Day!!

In what region of the ocean would you expect to find submarine canyons?

A. Abyssal plain
B. Continental rise
C. Continental shelf
D. Submarine trench

Answers

C. Continental shelf - correct choice

Submarine canyons are unequivocally primitive, often found in deep confabulations of the continental shelf.

Which of these factors is involved in earthquake formation?

Answers

Answer:

The factors involved in earthquake formation are: plates moving, rocks breaking and movement below the surface.

plates moving rocks breaking stress that decreases faults that remain stationary movement below the surface.

1) How is energy transferred from one organism to another?​

Answers

Answer:

Eating

Explanation:

Organisms eat one another to get energy.

Eating (0987466890986521134456789000)

Part A
If the newly-founded island population of moths in your GENETIC DRIFT Lab
simulation contains 30 (BB) black, 12 (Bb) grey, & 3 (bb) white moths, what is
the frequency of the white alleleb alleles) for the moth-coloration gene in the
population
10%
139
200
Submit
Request Answer

Answers

Answer:

0.2 (or 20%)

Explanation:

The allele frequency can be calculated by counting how many times an allele appears in a population and then by dividing this number by the total number of alleles of the gene. In this case,

- Genotype BB = 30 moths >> 60 copies of the B allele

- Genotype Bb= 12 grey moths >> 12 copies of the B allele and 12 copies of the b allele

- Genotype bb= 3 white moths >> 6 copies of the b allele

The total number of copies of the gene is:

Dominant (B) allele = 60 (BB genotype) + 12 (Bb genotype) = 72 B alleles

Recessive (b) allele = 12 (Bb genotype) + 6 (bb genotype) = 18 B alleles

Then, 72 + 18 = 90 alleles  

Allele frequencies:

Dominant (B) allele = 72/90 =  0.8 (or 80 %)

Recessive (b) allele = 18/90 = 0.2 (or 20%)

The frequency of the white allele b alleles for the moth-coloration gene in the population - 40%

The frequency of an allele can be calculated by dividing the number of times the allele of interest is observed in a population by the total number of copies of all the alleles at that particular genetic locus in the population

Total number of b alleles = number of alleles present in recessive bb + number of alleles present in heterozygotes Bb  

Number of bb individuals = 3 Number of b alleles present in bb = 3 × 2 = 6 Number of Bb individuals = 12 Number of b alleles present in Bb = 12 × 1 = 12 Total number of b alleles = 6 + 12 = 18

the frequency of an alele = 18/45

= 40%

Thus, the frequency of the white allele b alleles for the moth-coloration gene in the population - 40%

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How does the digestive system interact with the circulatory system?
A. Messages sent as electrical impulses from the digestive system are transported throughout the body by the circulatory system.
B. Nutrients taken in and broken down by the digestive system are carried to various parts of the body by the circulatory system.
C. Oxygen and carbon dioxide are exchanged by organs in the digestive system, and the gases are carried to the rest of the body by the circulatory system.
D. Nutrients and gases are absorbed by organs in the circulatory system. Then, they are transported to all parts of the body by organs in the digestive system.

Answers

Answer:

D

Explanation:

the circulatory absorbs nutrients and carries the chemical to signal through endocrine to control the speed of digestion.

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Please support the cause. If we all plant a tree, just 1 each, even 1 per family, it will save us from the future that global warming will bring us without these trees. plant a tree today and say to yourself, "wow i just planted a tree for a very important cause, and i saved someone's life today!"
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Answers

Answer:

ok

Explanation:

Answer:

Well said m8. POGCHAMP

Explanation:

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why is sustainability a problem in agriculture crops ?

Answers

I’m assuming because for some crops they need a certain amount of acidity
Despite this positive assessment, the country's sustainable agricultural development has encountered many obstacles. These include: agricultural water-use shortage; cultivated land loss; inappropriate usage of fertilizers and pesticides, and environmental degradation

. What are some consequences of using fossil fuels?

Answers

Answer: Using fossil fuels pollutes the air and increases carbon levels by releasing carbon dioxide when burned, which makes climate change worse.

A hypothesis is a statement that can be tested through a scientific investigation. What is the purpose of writing a hypothesis? A. Hypotheses help identify the variables. B. Hypotheses suggest new questions for further investigations. C. Hypotheses always match the conclusion. D.

Answers

Answer:

B. Hypotheses suggest new questions for further investigations.

Explanation:

The Answer is B. Hypotheses suggest new question for further investigation.
Other Questions
Scientific notation The table shows the amount of money raised by each region the four regions used a total of $ (5.3810^4) How much money did the West Raise? the table below shows different possibilites for the number of games a team would need to win to maintain a certain percentage of wins heeeeeeeeeeellllllllllllllllllllllllllllpppppppppppppppppppppp 1. Describe cell differentiation and include any environmental factors that play a role in gene regulation. 2. Explain the types of cells produced by meiosis. Include in your explanation the number of daughter cells produced, the number of chromosomes in each and whether they are diploid or haploid. What is the length to XY? Enter only the number as an integer or decimal. Riddle You enter a room.2 dogs, 4 horses 1 giraffe and a duck are lying onthe bed. 3 chickens are flying over a chair.How many legs are on the ground? the polygons in each pair are similiar. help find the missing side length??? WILL MARK AS BRAINLIEST PLUS 100 POINTS After you have listened to each music selection and filled out the listening chart for each, its time to do some comparing and contrasting.Write a one- to three-paragraph essay that compares and contrasts the two pieces of music that you listened to. If you need some help with what specific things to compare/contrast, refer to the listening charts that you filled out or the questions below:How do the two musical pieces differ?How are the two musical pieces similar?Were the instruments featured in the two pieces different from each other?What differences or similarities were there in tempo, or speed, of the music?Were there any differences in what you were imagining as you listened to each piece? Did you hear a story in either piece? What emotions were evoked from listening to each song?For information on how you will be graded, please refer to the rubric below. What holds amino acid chains within a protein in shape? PLEASE HELP ASAP I WILL GIVE BRAILY AND 25 POINTS... write an expression equivalent to 4x + 12 using the distributive property .Which is true?The highest cliffs in the world are in South Africa.Coasts and beaches are always sandy.People are not allowed to build resorts on beaches.Oystercatchers use their beaks to pry open shellfish. What motivated imperialist nations to expand into other regions of the world? Evaluate the expression 2 52 5 + 8 answer this i need it quick PLEASE let it be said that the negro soldier did his duty under the flag whether that flag protects him or no? summarize the meaning of the quote? how do I solve 9x-4= -44 Which of the following statements best describes thestructure of Gloria Steinem's address?A Steinem introduces her support for the ERA, liststhe harmful myths about women, provides evidenceto disprove each myth, and concludes with theadvocacy of full constitutional rights.0 B Steinem describes how the myths about womenhave personally affected her life.C Steinem makes a point about why the ERA isimportant and argues with anyone who disagreeswith her (i.e. Mrs. Wolfgang).D Steinem introduces her support for the ERA,compares the marginalization of women to that ofblack men, and concludes with a call for both partiesto receive full constitutional protection. A line with a slope of 3 passes through (2,5). Which choice is an equation of this line? Which is the best example ofparaphrasing for the followingpassage?42Well-a-well, we've all got togo, they ain't no gettingaround it. Man that is born ofwoman is of few days and farbetween, as Scriptur' says.Yes, you look at it any wayyou want to, it's awful solemnand cur'us: they ain't nobodycan get around it; all's got togo--just everybody, as youmay say.A. The Bible says that one day, everyonemust die. No one can escape death,B. The Bible says that if a man is born to awoman, then he will die.C. The Bible says that no one can avoidbeing born Read the excerpt from "Opening Ceremonies of the New York and Brooklyn Bridge" by Hon. Seth Low, Mayor of the City of Brooklyn.Brooklyn becomes available, henceforth, as a place of residence to thousands, to whom the ability to reach their places of business without interruption from fog and ice is of paramount importance. To all Brooklyn's present citizens a distinct boon is given. The certainty of communication with New York afforded by the Bridge is the fundamental benefit it confers.Read the following summary of the excerpt.It is great that the Brooklyn Bridge finally created new business opportunities by allowing the citizens of Brooklyn to easily commute to Manhattan.Which of the following flaws can be found in this summary of the excerpt?The summary gives the readers personal opinion.The summary does not include the main idea.The summary is written in the mayors words.The summary includes unimportant details.