Answer:
Surgical repair of the branch pulmonary arteries is a common procedure in congenital heart disease surgery and is often performed as part of a complex reintervention
6. explain the functions of the following structures or molecules in the respiratory system: structure function alveoli bronchus diaphragm hemoglobin bicarbonate ions trachea
The function of the following structures 1)alveoli 2) bronchus 3)diaphragm 4)hemoglobin 5) bicarbonate ions 6)trachea in the respiratory system are as given below.
Alveoli: These are tiny air sacs in our lungs where the exchange of gases take place. Alveoli move oxygen and carbon dioxide into and out of our bloodstream during respiration. When we breathe in, Oxygen from the air is passed into the bloodstream through the capillaries on the alveoli walls. During exhalation, the carbon dioxide in the blood is passed into the alveoli which are breathed out.
Bronchus: The primary function of the bronchus is to help in the passage of air we breathed in from the trachea(windpipe) to the bronchioles in the lung. The exhaled air carrying carbon dioxide also passes out through the bronchi.
Diaphragm: the diaphragm helps pull or expel air into and out of the lungs. When we inhale the diaphragm flattens and contracts. This creates a vacuum that helps to pull air into the lungs. When we exhale the diaphragm relaxes and this pushes the air out of our lungs.
Hemoglobin: Hemoglobin is a protein found in blood and its main function is to transport oxygen from our lungs to the tissues of our body where it releases this oxygen.
Bicarbonate ions: CO[tex]_{2}[/tex] or carbon dioxide formed as a waste product in our body is removed from our body as bicarbonate ions which are formed when carbon dioxide is hydrated (reacts with H[tex]_{2}[/tex]0). The bicarbonate ion is then carried to the lungs where it dehydrates. This produces CO[tex]_{2}[/tex] and this is released when we exhale.
CO[tex]_{2}[/tex] + H[tex]_{2}[/tex]O ⇄ HCO[tex]_{3} ^{-}[/tex] (bicarbonate ion) + [tex]H^{+}[/tex]
Trachea: the function of the trachea is to carry air into and out of the two bronchi which lead to the lungs.
Diagram of respiratory system is attached.
Learn how the respiratory system is similar to other body systems.
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Once a cell completes mitosis, molecular division triggers must be turned off. What happens to mpf during mitosis?.
Once a cell completes mitosis molecular division triggers must be turned off and after the mitosis is completed MPF is deactivated.
What is mitosis and why MPF is deactivated after the mitosis?Mitosis is the cell multiplication with thousands of functions in normal physiology also , to heal the would etc.Mitosis do not divide the cell instead the cell gets divided into meiosis that is the cell division phase.There are four to five phases of both mitosis and meiosis amongst which is a phase called anaphase supposed to be the shortest phase.During the phase MPF is activated that is during the anaphase, and it activates another protein complex.Hence once a cell completes mitosis molecular division triggers must be turned off and the MPF is deactivated.To know more about mitosis visit:
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which of the following statements is false? group of answer choices dna replication proceeds in only one direction around the bacterial chromosome multiple replication forks are possible on a bacterial chromosome dna polymerase joins nucleotides in one direction (5' to 3') only the leading strand of dna is made continuously the lagging strand of dna is started by an rna primer
Nucleotides can only be joined in one way (5' to 3') by DNA polymerase.
DNA synthesis or replication takes place during the S phase of a cell cycle, which happens during interphase and comes before mitosis or meiosis.
Describe DNA replication with an example.The act of copying and duplicating a DNA molecule is known as DNA replication. The procedure is run in a semi-conservative manner.
Before dividing, cells must copy their DNA. This promotes successful inheritance of genetic features by giving each daughter cell a copy of the genome. The fundamental mechanism of DNA replication is similar across all organisms, making it a crucial operation.
Three models—conservative, semi-conservative, and dispersive—were put out for DNA replication. According to the conservative way of replication, freshly generated daughter strands and the parental DNA should both remain together.
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Which of the following macromolecules contain the element carbon hydrogen oxygen and nitrogen in their structure?
A: carbohydrates & nucleic acids
B: nucleic acids & lipids
C:proteins & nucleic acids
D: proteins & carbohydrates
Answer:
C: proteins & nucleic acids
Explanation:
Christina is worried that her traits are completely determined by the genes passed on to her from her parents. Which of these is least likely to be affected by heredity?.
Option a Christina is worried that her traits are completely determined by the genes passed on to her from her parents. personality likely to be affected by heredity.
The transfer of traits from one set of parents to another is known as heredity, often known as inheritance or biological inheritance. Whether through reproduction, the offspring cells or organisms acquire the genetic makeup of their parents. Genes, also known as alleles, can occur in multiple forms and are responsible for determining hereditary features. Each gene in our cells has two copies (with the exception of genes located on chromosomes). Both the sperm and the egg contribute to one of the copies. These two copies, also known as alleles, may not be identical in a single person. We refer to an individual as homozygous for a gene if the two copies of the gene are identical. A gene is heterozygous if its two copies are distinct.
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Airplanes reach cruising altitudes at the lower part of the Earth's stratosphere. This portion of the atmosphere is made up mostly of
and
Nitrogen and oxygen are found in the Earth's stratosphere, which is the second-lowest layer of the atmosphere. These are the two most common gases throughout the whole atmosphere.
What is the stratosphere?A part of the atmosphere on Earth is called the stratosphere. As you ascend, it is the second layer of the atmosphere. The stratosphere is immediately followed by the lowest layer, the troposphere.
At medium latitudes, the floor of the stratosphere is around 10 kilometers (6.2 miles, or about 33,000 feet) above the surface. At a height of 50 km, the stratosphere's top is located (31 miles). The height of the lower stratosphere changes according to latitude and season.
Therefore, Nitrogen and oxygen are found in the Earth's stratosphere, which is the second-lowest layer of the atmosphere. These are the two most common gases throughout the whole atmosphere.
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What animal would be a prides best option to hunt if the pride requires 106,000 kcals per day if there are 4 hunters that can expend up to 15,000 kcals per day
Answer:
Gezzel
Explanation:
I know
In a eukaryotic cell, secreted proteins and integral plasma membrane proteins are synthesized by___.
In a eukaryotic cell, secreted proteins and integral plasma membrane proteins are synthesized by ribosomes docked to the rough ER.
A Eukaryotic Cell is what?
Large and sophisticated creatures are made up of eukaryotic cells, which have a nucleus surrounded by a nuclear membrane. Eukaryotic cells are found in fungi, plants, mammals, and protozoa. They are categorized as belonging to the Eukaryota kingdom.
They can sustain diverse conditions within a single cell, enabling them to perform numerous metabolic processes. They are able to grow several times larger than prokaryotic cells because of this.
Eukaryotic Cell Characteristics
The following are the characteristics of eukaryotic cells:
The nuclear membrane encloses the nucleus in eukaryotic cells.
the mitochondria of the cell.
In a eukaryotic cell, the locomotory organs are flagella and cilia.
The outermost layer of eukaryotic cells is called a cell wall.
The process of mitosis is how cells divide.
The cytoskeleton is present in eukaryotic cells.
All of the genetic information is contained in a single, linear DNA found in the nucleus.
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Question
What is the atomic number of an atom?
Responses
the number of electrons and neutrons
the number of electrons and neutrons,
the number of neutrons
the number of neutrons,
the number protons and neutrons
the number protons and neutrons,
the number of protons
According to the research, the correct option is the number of protons. The atomic number of an atom is the number of protons.
What is the atomic number?It is a number that indicates the amount of protons that allows the ordering of the various chemical elements in the periodic table.
In this sense, it is responsible for defining the electronic configuration of the atom since it represents the protons that are present in the nucleus of an atom.
Therefore, we can conclude that the atomic number represents the positive nuclear charge of an element (protons) and is associated with the nucleus.
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Answer:
The number of neutrons
Explanation:
took the test
Describe one source of genetic variation in meiosis and explain, in your own words, how it increases genetic variation.
One source of genetic variation in meiosis is Recombination or crossing over.
A zygote is formed when one gamete from each parent combines fertilization. In meiosis, each gamete has a unique set of DNA because of recombination and independent selection. The resulting zygote is a one-of-a-kind creation as a result of recombination.
In prophase I, homologous chromosomes, one from each parent, pair along their lengths, gene by gene, resulting in recombination or crossing over. Chromosomes break and then rejoin, exchanging some of their genes. The combination of genes on the chromosomes is now novel.
During meiosis, the process of chromosomes moving at random to separate poles is called an independent assortment. After meiosis, a gamete will have 23 chromosomes, but independent assortment means that each gamete will have one of many different chromosome combinations.
This rearranging of genes into one-of-a-kind combinations raises a population's genetic variation and explains the variation between siblings with the same parents.
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Describe how a substrate interacts with an enzyme. Use the phrase lock and key in your description. Answer in 2-3 sentences.
A substrate interacts with an enzyme to generate an enzyme-substrate conformational change that resembles a key capable of matching to a particular lock in a door.
What is enzyme specificity?Enzyme specificity refers to the ability of an e3znyme to bind to a particular substrate in order to catalyze a chemical reaction. This binding lead to the formation of the enzyme-substrate complex where the substrate matches with the enzyme at the active site in a similar way to a lock and a key.
Therefore, with this data, we can see that enzyme and substrate are very specific and they interact in a similar way to a key and a lock in the door.
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Eukaryotic cells contain several organelles with a variety of functions. If a
cell's lysosomes were damaged, which of the following would most likely
occur?
A The cell would be less able to break down molecules/waste in its cytoplasm.
B The cell would reflect more yellow pigment than green pigment.
C The cell would no longer be able to store DNA in its nucleus.
D The cell would produce more proteins than it needs.
Answer: A The cell would be less able to break down molecules/waste in its cytoplasm.
Explanation:
"Lysosomes act as the waste disposal system of the cell by digesting used materials in the cytoplasm"
Which diagnostic test measures the level of oxygen and carbon dioxide in the blood?.
If the conservative model had been correct, how many generations of bacterial cell division would have had to pass before meselson and stahl would have observed evidence of a band in the cscl gradient corresponding to a hybrid dna molecule containing both 14n and 15n?.
No generations or hybrid would form before meselson and stahl would have observed evidence of a band in the cscl gradient.
The conservative model predicts that, following a single replication, half of the newly formed DNA double helices will be made entirely of the original, or old, DNA, and the other half will be entirely new. Then, each double helix would be completely replicated during the second round of replication. After that, 25% of the double helices would be all new, and 25% would be entirely old. Thus, the fraction of entirely new DNA double helices would increase with each succeeding round of replication, but the total number of completely unique DNA double helices would remain constant. Therefore, no hybrid DNA molecule containing 14N and 15N is replicated in the conservative model.
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Questions on The excretory system
True urine on a cold day is usually darker.
False a person is more likely to urinate on a cold day
False, adh triggers reabsorption of water in the collecting ducts
True at the convoluted tubules certain substances are selectively reabsorbed into the blood stream via diffusion
are the answers for the mentioned questions on The excretory system .
What are excretory systems used for?Removing waste from the body is the excretory system's job. These wastes include heat, salts, CO2, nitrogen, and water. The body's process of transforming food into energy is called metabolism. There are waste products as a result of metabolism.
The human excretory system is made up of the following organs: one urethra, one urine bladder, two kidneys shaped like beans, and two ureters.
Excretion is the process through which waste products from the body's typical biological functions are eliminated. It's important to get rid of waste materials like carbon dioxide. If they are allowed to build up, they harm people and slow down important chemical processes.
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how does the cell wall function work in a plant cell
4-5 sentences
thank you
Answer:
The cell wall is the outermost layer of a plant cell. It works like a protective shield that keeps the contents of the cell inside and prevents water loss. The function of this layer is to protect against harmful substances, such as bacteria and viruses, which can cause diseases in plants. In addition, it also serves as a barrier for gases (such as oxygen) so they do not leak out into the surrounding environment.
Explanation:
The Florida panther was once considered to be a subspecies of cougars. Current scientists, however, have studied the Florida panther and removed the subspecies classification
Which of the following would explain why the classification of the Florida panther changed?
A.) New genetic evidence suggests a much closer relationship between the Florida panther and other cougars
B.) Advanced technologies have shown a large difference in cell structure between the Florida panther and other cougars.
C.) Study of their embryos shows major differences in the development of the Florida panther fetus when compared to other cougars
D.)Shared physiological features
between the Florida panther and other cougars were also found in newly discovered organisms in the world.
Question 2 of 5
Which statement describes the movement of matter in the rock cycle?
O A. Water gets heated by sunlight and evaporates.
OB. Magma rises to the surface and solidifies.
OC. Living things take in and give off water.
O D. People burn fuels that contain carbon and release CO₂.
Answer:
OC
Explanation:
Magma is molten matter therefore, when magma rises and solidifies it forms solid matter.
As a teenager, whenever you have gone out with friends or traveled away from home, you've likely been asked to call and check in every once in a while. Most of us probably don't think much about doing so. We may even talk on the phone with friends or family members several times a day. But pretend for a moment that you are a soldier in the military. You have been sent overseas for several months, away from all of your family and friends, in order to serve your country. You might imagine that the ability to call home and talk with your loved ones would be something to look forward to. But what if those phone calls left you with a $7,600 phone bill? When 14-year-old Brittany Bergquist and her 12-year-old brother Robbie, of Norwell, Massachusetts, saw a news story about a soldier who found himself with just this problem, they decided to help. Robbie recalls, "We were taken aback and wanted to make sure he didn't have to pay that cell phone bill!" They began by raising money. Brittany and Robbie donated 14 dollars of their own savings and collected seven dollars from friends. A local bank heard about what they were doing and donated $500. But $521 was nowhere near the amount needed to help the soldier pay his bill. So Brittany decided to send donated cell phones to the soldiers. This way, they would have their own phone to use when calling home, which would be less expensive. Brittany and Robbie collected as many old cell phones as they could. But there was a problem. Because of security concerns, the Pentagon would not allow phones to be sent overseas. Brittany and Robbie were determined, so they came up with another idea. They found a cell phone recycler in Michigan who would pay them five dollars for each phone they sent in to be recycled. Using that money, they could buy pre-paid phone cards to send to the troops.It didn't take long for the Cell Phones for Soldiers program to take off. Today, there are over seven thousand locations to drop off your old cell phone. The program has recycled over ten million phones since it was started in 2004. Over 180 million minutes of talk time have been given to the soldiers, and each week, about twelve thousand calling cards are sent. The Bergquist family still runs the program largely on their own. Brittany says that her involvement with the charity has helped her learn how to build awareness for a cause, and form relationships with companies that can help. Although she admits that she gets nervous when she has to do something that is out of her comfort zone, she has learned that it is important to overcome her fear so that her charity can continue to grow. She says founding Cell Phones for Soldiers "... has been the most positive and motivating experience of my life..." and that, "It's unbelievable and overwhelming to know that we've been able to help out families that we're never going to see; that we've had an impact on their lives."
please compare and contrast it thanks
The office would have no cell phones policy for employees to increase the concentration during the working hours and increase the productivity of work.
What is no cell phone policy?No cell phone policy has been the policy in which the use of the cell phone has been strictly prohibited and it has been implemented in the offices or working place to increase the productivity and concentration in the workings hours.
Excessive use of cell phone at the work can be reduced the quality of work because while using phone brain stops to generate the good ideas and limit yourself.
During working hours the mobile devices are could to be in the desk and advised not to keep the mobile phone in the hand or nearby working table. Cell phone policies has been a set of the guidelines regarding the use of the cellphone in the workplace. The employees of that workplace should be read cell phone policies before joining.
Therefore, The office would have no cell phones policy for employees to increase the concentration during the working hours and increase the productivity of work.
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Which part of the brain is involved in initiating, or turning on, the desire to eat?.
Answer: lateral hypothalamus
Explanation: A part of the hypothalamus involved in initiating, or “turning on,” eating. ventromedial hypothalamus: A part of the hypothalamus involved in regulating feelings of satiety. neurotransmitters and hormones are involved in regulating hunger and appetite.
Find the quotient. Enter your answer in lowest terms in the box below as a fraction, using the slash mark ( / ) for the fraction bar.
Answer here
What is peristalsis?
A
an enzyme that helps food dissolve
B
nutrients that are absorbed by organs
C
an organ that stores waste until it is removed from the body
D
muscle contractions that move food down the digestive tract
Answer:
D
muscle contractions that move food down the digestive tract
Explanation:
Directly from definition: Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract.
What is a community of interacting organisms and their environment called?
Answer:
Ecosystem
Explanation:
Ecosystem refers to the interaction between the community of organisms within their external environment. Ecosystems can be of different sizes and can be marine, aquatic, or terrestrial.
Answer: It is called a Ecosystem
Explanation: Definiton: a biological community of interacting organisms and their physical environment.
In chicken feather color black is incomplete dominant to white. The intermediate is Blue.
A blue feathered chicken is crossed with a white feathered chicken.
If they produce 8 chicks, how many will have Blue feathers?
a.0
b.4
c.8
d.2
Answer:
about 4
Explanation:
The human stomach is an organ that helps us digest food. The stomach is one of many organs involved in the process of digestion. Others include the esophagus, small intestine, pancreas, and gall bladder. What name is given to a set of organs that work together to perform a specific function?.
Answer:
Organ System
Explanation:
A group of organs that work together to perform a specific function is called an organ system.
Answer:
organ systems
Explanation:
because they have different ways in digesting food and when they've been brought to work together they help your body to function
If the conservative model had been correct, how many generations of bacterial cell division would have had to pass before meselson and stahl would have observed evidence of a band in the cscl gradient corresponding to a hybrid dna molecule containing both 14n and 15n?.
If the conservative model had been correct, No generations; a hybrid would never form had to pass before meselson and stahl would have observed evidence of a band in the cscl gradient corresponding to a hybrid dna molecule containing both 14n and 15n.
What is the Meselson and Stahl experiment about?
The Meselson and Stahl experiment is an experiment in 1958 by Matthew Meselson and Franklin Stahl. Meselson and Stahl through their experiment demonstrated that DNA replicated semi-conservatively, meaning that each strand in a DNA molecule serves as a template for synthesis of a new, complementary strand
Here's the complete question:
If the conservative model had been correct, how many generations of bacterial cell division would have had to pass before Meselson and Stahl would have observed evidence of a band in the CsCl gradient corresponding to a hybrid DNA molecule containing both 14N and 15N?
A) 1 generation
B) 4 generations
C) More than 10 generations
D) No generations; a hybrid would never form.
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in humans, 2–3 percent of body protein is broken down and rebuilt every day, during which some of the building blocks for protein are lost. humans therefore need to frequently replenish their supply of carbon by absorbing co2 from the air. retain all the nitrogen-15 contained in their food need to eat food rich in fatty acids to rebuild their proteins. use food as a source of amino acids. make all of their required amino acids from the fatty acids stored in their liver.
In humans, 2–3 percent of body protein is broken down and rebuilt every day, during which some of the building blocks for protein are lost. humans, therefore, use food as a source of amino acids.
The body is made up of protein, which may be found in almost every organ, tissue, and body part, including muscle, bone, skin, and hair. It contributes to the production of hemoglobin, which transports oxygen in the blood, and enzymes, which drive numerous chemical reactions. You are made up of at least 10,000 distinct proteins, which also keep you that way.
Protein is present in every human cell. An amino acid chain makes up the basic building block of proteins. In order for your body to repair damaged cells and create new ones, you need protein in your diet. Children, teenagers, and expectant women all need protein for healthy growth and development.
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explain how heavy poaching shifted the population to be more tuskless
Decades of poaching and overhunting of large-tusked elephants could result in generations of elephants with small tusks or no tusks at all.
According to Poole, in heavily poached populations, the proportion of tusked animals in the population increases as poaching continues.
“The baseline tusk loss in a population can be as high as 4%, but over time the rate could increase to 60% in older animals as more tusked elephants are killed. there is potential,” she explains.
Tiny tusks aren't the only genetic impact African (and Asian) elephant populations face from heavy poaching. Over the decades, researchers have documented an increasing proportion of tuskless males and females in many elephant populations.
“Most populations will always have tuskless elephants because elephants have a sex-associated tuskless gene,” Poole says. “The males need tusks to fight, so tuskless males are chosen, and there are very few tuskless males. They don't pass on genes as often."
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if anybody helps me on this i will give you brainliest and extra points please help this is due soon and i really can’t miss this.
Answer:
1) (20+40) - 15 = 45 N [to the right]
2) 19-7= 12 N [to the left]
3) (45 +3) - (35+13) = 0 N [no direction as net force is zero]
4) 39 +11 =50 N [to the right]
Explanation:
If arrows are in the same direction, forces will be added
if arrows are in different direction, forces will be subtracted.
add forces is the same direction and subtract the forces in the opposite direction from the added value
Force cannot be negative
Advice: use brackets to make sure the math is correct. Brackets also help to understand better
For the direction, the net force will go in the direction of greater force
Briefly explain the effects of various pollutants (acid rain, plastics, oil, or fertilizers) on the four spheres – you should be
able to discuss specific effects on terrestrial and aquatic ecosystems.
The plastic particles they consume enter the food chain through the various life forms in these habitats, all the way up to us humans.
What effect of pollutants on terrestrial and aquatic sphere?Aquatic life forms mostly suffer as a result of water pollution because water bodies lose an adequate amount of fresh dissolved oxygen due to an increase in toxicity.
Contaminants like sulfur can cause excessive acidity in lakes and streams, harm to trees and forest soils, and limit the biodiversity of plant communities.
Therefore, various effect of pollutant on terrestrial and aquatic ecosystems.
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