g human blood flows from the aorta to the capillaries. the radius of an aorta is 12 mm, and a capillary average 4 micrometer. blood speed is 400 mm/s in the aorta, and 0.5 mm/s in a capillary. estimate how many billions of capillaries are in the body.
Answers
The body's estimated total number of billions of capillaries is seven, based on the equation of continuity is 7×\(10^{9}\).
The blood's density is relatively constant from the aorta to the capillaries. The volume flow rate across all capillaries must be equal to the volume flow rate in the aorta according to the continuity equation.
The area of a sample capillary is multiplied by the overall number of capillaries N to get the total area of all of the capillaries.
Assume that A1 represents the aorta and that A2 represents all of the blood vessels.
Then A1 = N× π×r²
where r = 4 x \(10^{4}\) cm is thought to be the capillary's average radius. We can infer from the continuity equation that
v2×A2 = v1×A1
v2×π×N×r²cap = v1×π×r²arota
When we substitute and solve for N in the equation, we obtain the value of N as 7×\(10^{9}\).
Learn more about the blood's density at
https://brainly.com/question/14036145?referrer=searchResults
#SPJ4
Related Questions
Which of the following parasites larva must attach to a snail to complete their life cycle and then encyst on water plants eaten by livestock?
lungworms
liver flukes
strongyles
pinworms
Answers
b. liver flukes
i took the exam
required for the synthesis of nicotinamide adenine dinucleotide. group of answer choices riboflavin biotin niacin nicotine
Answers
Niacin is required for the synthesis of nicotinamide adenine dinucleotide.
Nicotinamide Adenine dinucleotide is a coenzyme that is essential for metabolism. NAD is a dinucleotide because it is made up of two nucleotides that are linked together by their phosphate groups and is found in all living cells. One nucleotide contains adenine nucleobase, while the other contains nicotinamide. Nicotinamide adenine dinucleotide (NAD+) is a pyridine nucleotide that functions as a cofactor and substrate in a variety of critical cellular processes such as oxidative phosphorylation and ATP synthesis, DNA repair, and epigenetically modulated gene expression.
Niacin is a Form of vitamin B that your body produces and uses to convert food into energy. It supports the health of your nervous system, digestive system, and skin. Niacin (vitamin B-3) is frequently included in daily multivitamins, but most individuals receive sufficient niacin from their diet. Niacin can be used to treat high cholesterol, triglyceride levels, and niacin deficiency. It can also lower the probability of a heart attack and slow artery narrowing.
For more information on Nicotinamide Adenine dinucleotide, visit :
https://brainly.com/question/14101665
#SPJ4
"Pounds" are the money that is used in the United Kingdom, and are noted
by the symbol "E". Today, one £ is equal to $1. 35. How many $ is £5. 00? *
$5. 25
O $6. 25
$6. 75
O $7. 75
Answers
If the value of one £ (Pound) is equal to $ (Dollar) 1. 35, then £5. 00 will be equal to $6. 75.
Pound is the currency of the country United Kingdom. The word pound was derived from the Latin word "poundus" which means 'weight'. The symbol of pound is £ that comes from the ornate L in Libra.
Dollar is the currency of more than 20 countries approximately. The example of some are: Australian dollar, Brunei dollar, Canadian dollar, Hong Kong dollar, etc.
In the given question,
One Pound = $1. 35
Therefore to find the value of £5. 00 in Dollars ($)
£5. 00 = $1. 35 × 5
£5. 00 = $6. 75
To know more about pounds, here
brainly.com/question/13702127
#SPJ4
Kelp (seaweed) is in the
kingdom
A
Archaea
B
Protista
с
Bacteria
D
Fungi
Answers
Answer:
Seaweed is apart of the kingdom B, Protista
Explanation:
This is because seaweed is an algae, which is a multicellular photosynthetic protist.
Kingdom Protista is a unique group that dont belong in the plant, animal or fungi kingdoms. Many are unicellular organisms as well, but some different algae forms can be multicellular
Hope this helps! Have a good rest of your day!!
Which is a mechanism for restricting the movement of proteins in the plasma membrane?
Answers
The mechanism for restricting the movement of proteins in the plasma membrane is known as membrane domain organization. This process involves the creation of distinct regions or domains within the membrane that have different properties and functions.
Membrane rafts are one of the primary mechanisms through which membrane domain structure limits protein mobility. They are dynamic, tiny areas of the membrane that are enriched in specific proteins, sphingolipids, and cholesterol. Compared to other areas of the membrane, rafts are stiffer and less fluid due to the high concentration of these molecules, which limits the mobility of proteins that are not particularly linked to the raft.
Protein-protein interactions are a further method for limiting the mobility of proteins. By particular interactions, many proteins in the membrane are fixed to the cytoskeleton or to other proteins. These interactions may produce obstructions that limit the ability of proteins to migrate through the membrane.
Learn more about plasma membrane
brainly.com/question/30479906
#SPJ4
what’s the answer to this question?
Answers
RR is hom--ogenous red
Rr is heter---ogenous red
R is dominant
r is recessive
What is the Puneet square used for?A Punnett square is a graphical representation used in genetics to predict the probability of an offspring having a particular genotype (genetic makeup) based on the genotypes of the parents. The Punnett square is named after Reginald Punnett, the British geneticist who first described it.
The Punnett square is a simple and effective way to visualize the possible outcomes of a genetic cross between two individuals, where the columns represent one parent and the rows represent the other parent. The cells of the Punnett square contain the possible offspring genotypes that result from the combination of alleles (versions of a gene) from each parent.
Learn more about Punnett square:https://brainly.com/question/27984422
#SPJ1
PLEASE HELP WILL GIVE BRAINLIEST
Sustainability means developing practices that protect the environment while also providing for human needs. Which of the following changes would be most helpful in achieving sustainable agriculture?
Clearing land for agriculture by cutting down trees instead of burning them
Rotating crops to replenish the soil with nutrients
Tilling the ground to remove weeds and create uniform crops
Growing crops that produce only renewable resources
Answers
The change that would be most helpful in achieving sustainable agriculture is rotating crops to replenish the soil with nutrients (Option 2 is correct).
What is sustainable agriculture?Sustainable agriculture is a type of agricultural practice that allows the renovation of renewable resources. This procedure can be maintained over a longer period of time without the need to incorporate new material into the soil, which is achieved by rotating crops and thus replenishing the soil with more nutrients.
In conclusion, sustainable agriculture is associated with the rotation of plant crops, which helps to reload the soil with nutrients and thus new crops can grow in different seasons (Option 2).
Learn more about sustainable agriculture here:
https://brainly.com/question/26177941
#SPJ1
What are the 3 types of nystagmus?
Answers
The three types of nystagmus are:
1) Congenital nystagmus, which is present at birth or develops within the first few months of life;
2) Acquired nystagmus, which develops later in life due to an underlying condition or injury; and
3) Physiological nystagmus, which is a normal response to certain visuals or movement stimuli.
To know more about nystagmus please visit:
https://brainly.com/question/31588137
#SPJ11
Autotrophs (or producers) capture the sun's energy through a process known as ____ in specialized cell parts known as _____. This energy is converted and stored as _____. Then both autotrophs and heterotrophs use that energy to regenerate ATP. This is most efficient during the process of _____, which happens in a cell's _____.
Answers
2.) the chloroplasts
3.) chemical energy- glucose
4.) respiration
5.) mitochondria
The glycogen phosphorylase enzyme carries out a phosphorolysis reaction resulting in the formation of free glucose. glucose-6-phosphate. glucose-1-phosphate. maltose.
Answers
The glycogen phosphorylase enzyme carries out a phosphorolysis reaction resulting in the formation of glucose-6-phosphate.
The Phosphorolysis reaction:
The glycogen phosphorylase enzyme catalyzes the phosphorolysis of glycogen, breaking down the glycogen molecule into glucose-1-phosphate units. This reaction involves the transfer of a phosphate group from the glycogen molecule to an inorganic phosphate molecule, resulting in the release of glucose-1-phosphate.
This free glucose-1-phosphate molecule can then be converted to glucose-6-phosphate by the enzyme phosphoglucomutase. From there, the glucose-6-phosphate can enter glycolysis or other metabolic pathways to produce energy for the cell. Therefore, the correct answer to your question is glucose-1-phosphate. This process involves the breaking of the glycosidic bond in glycogen using inorganic phosphate, which then produces glucose-1-phosphate as the main product.
To know more about phosphorolysis reaction, visit:
https://brainly.com/question/28162314
#SPJ11
Which of the following is a future consequence of the use of hydropower from dams on the environment?
A. It generates no greenhouse gases
B. It can be used in isolation locations
C. A dam and reservoir can flood habitats.
D. It produces less noise than other energy
Answers
Answer: C
all of these are good things except the flooding of the habitats
Climate conditions in a small area that differ significantly from the climate of the surrounding area are called
a natural features.
C. biomes.
b. microclimates.
d. ecosystems.
Answers
Answer:
b. microclimates.
Explanation:
Microclimates are the climate conditions in a small area that differs significantly from the climate of the surrounding area.
These climatic conditions are usually substantially different from the local climate of an area.
Microclimates can be induced by human activities for example in urban centers with high rise buildings. Also, bodies of water can influence the local climate of an area. Areas with high elevation usually have distinct climatic conditions.Describe a possible food chain made up of
common organisms in the city park ecosystem
shown. Tell what might happen if all of one type of
organism moved away.
Answers
Answer:
Explanation:
1. Grass and other plants as the primary producers
2. Grasshoppers and other insects as herbivores
3. Sparrows, robins, and other small birds as primary consumers that eat the insects
4. Hawks and other larger birds as secondary consumers that eat the smaller birds
5. Foxes, raccoons, and other mammals as tertiary consumers that eat the birds and small mammals
If all of the grasshoppers were to move away, the population of small birds that rely on them for food would likely decrease. This could also lead to a decrease in the population of larger birds and mammals that eat the smaller birds. In turn, this could result in a population increase of the plants that the grasshoppers were previously eating.
which type of reaction best describes microtubules that are undergoing dynamic instability in vitro- steady state or equilibrium (assuming gtp is always available)?
Answers
Microtubules in steady state or equilibrium that are undergoing dynamic instability in vitro. Microtubules' dynamic instability. The hydrolysis of GTP linked to -tubulin during or soon after polymerization lowers the protein's affinity for interacting with nearby molecules, causing dynamic instability.
Self-assembling microtubules (MTs) stochastically alternate between stages of growth and shrinking during dynamic instability. The existence of two alternative MT component states, GTP- and GDP-bound tubulin dimers, with various structural characteristics, is what propels this process. The dynamic behaviour of microtubules is driven by GTP hydrolysis, which modifies the shape of the tubulin molecules. Dynamic instability is a phenomenon in which shrinking and fast microtubule polymerization alternate.
To know more about steady state, click here:
https://brainly.com/question/15073499
#SPJ4
Please Help Me!
Which options describe advantages of genetic engineering in agriculture?
(Select all that apply.)
A. having crops that can grow in any type of soil
B. having crops that can grow at any temperature
C. having crops that are more resistant to cold
D. having crops that are more resistant to heat
Answers
Answer:
A. having crops that can grow in any type of soil
Cellular respiration is the cellular process which transfers
chemical energy from the sugar molecule glucose into what
other molecule?
a ADP
b ATP
C NADPH
d FADHA
Answers
hope this helps !
What happens when an egg is fried? A. The egg changes from a liquid to a solid as it reaches its freezing point. B. Air combines with the egg, forming a mixture. C. Heat causes the substances in the egg to change into new substances. D. The egg dissolves in the oil, forming a thick solution.
Answers
Answer:
C. heat cause the substances in the egg to change into a new substance.
Explanation:
the longer you heat the protein and the higher the temperature, the tighter the protein will bond to each other.
Answer:
C.Heat causes the substances in the egg to change into a new substances
Explanation:
This is a Chemicals change , chemicals change , chemicals changes occur when a substance combined with another to form a new substance , called chemicals synthesis or , alternatively , chemicals decomposition into two or more different substances these processes are called chemicals reactions and . in general . are not reversible except by further chemical reactions
What can archaeological studies (particularly of the Mesolithic) tell us about prehistoric adaptations to climate change?
2) What can this tell us about our struggles with climate change today?
3) What specific challenges did Mesolithic people face as they confronted climate change that we don't today? What specific challenges do we have today that Mesolithic people didn't have to deal with?
4) How can archaeologists (and their specialized knowledge of the past) influence the climate change debate?
Answers
the Archaeological studies of the Mesolithic period can reveal a lot about prehistoric adaptations to climate change. This provides Archaeological studies (particularly of the Mesolithic) can tell us about prehistoric adaptations to climate change by revealing how prehistoric populations.
By analyzing fossils, pollen, soil samples, and other indicators, archaeologists can recreate past environments, ecosystems, and subsistence practices. They can see how people adapted to climate-induced changes in vegetation, water sources, and animal migrations. For example, changes in hunting strategies, toolmaking techniques, and settlement patterns are often related to shifts in climate.
Specific challenges we have today that Mesolithic people didn't have to deal with include the large-scale burning of fossil fuels, which is contributing to the warming of the planet. This is a challenge that requires global cooperation and political will to address. Archaeologists and their specialized knowledge of the past can influence the climate change debate by providing a long-term perspective and demonstrating the impact of human activities on the environment. They can also contribute to interdisciplinary research that brings together scientists, policymakers, and community stakeholders to develop strategies for mitigating and adapting to climate change. Additionally, they can help to preserve cultural heritage sites that are threatened by climate change.
To know more about populations Visit;
https://brainly.com/question/11065484
#SPJ11
to roughly what temperature would you have to cool the diver to produce the same change in the volume of air in her lungs
Answers
To produce the same change in the volume of air in the lungs of a diver, the temperature of the diver needs to be cooled to approximately 10°C.
As the diver descends into the water, the pressure on the lungs increases, compressing the air inside the lungs and reducing its volume. The pressure on the lungs increases by about 1 atmosphere (1 atm) for every 10 meters of depth, causing the air in the lungs to compress by a factor of 2 for every 30 meters of descent. This effect is known as Boyle's law.
To produce the same change in the volume of air in the lungs of a diver, the temperature of the diver needs to be cooled to approximately 10°C. This is because cooling the air in the lungs decreases the volume of the air in the same way that increasing pressure does, so lowering the temperature can offset the compression caused by increased pressure at depth.
Learn more about Boyle's law here:
https://brainly.com/question/21184611
#SPJ11
Review the following characteristics for a population in a country:
Both birth and death rates are at extremely high levels
Population is increasing
Which stage of demographic transition does this describe?
a. Stage 1
b. Stage 2
c. Stage 3
d. Stage 4
Answers
Answer:
A) Stage 1
Explanation:
Demographic transition has to do with the changing pattern of factors that impact population such as birth rates, death rates as the population moves from regime to regime. The transition is in four stages:
Stage 1: which is characterized by high high birth and death rates. also known as pre-transition stage.Stage 2: Characterized by falling death rate but continued high death rate. Also known as early transition stage.Stage 3: characterized by a decline in birth rate and deceleration of population growth. It is also known as late transition period.Stage 4: Characterized by low birth and death rate. Negligible population growth. Also known as post-transitional period.Mandates the restoration and maintenance of the chemical, physical, and biological integrity of the nation's waters: _________
Answers
Mandates the restoration and maintenance of the chemical, physical, and biological integrity of the nation's waters Clean Water Act .
The Clean Water Act (CWA) is the fundamental Federal act overseeing the restoration and preservation of the "chemical, physical, and biological integrity of the Nation's waterways." (CWA § 101). One of its primary goals is to restrict the release of contaminants into US waters unless authorized by a permit.
To preserve our drinking water, Congress created the Safe Drinking Water Act (SDWA) in 1974, with modifications made in 1986 and 1996. The SDWA requires the EPA to develop drinking water quality standards and to monitor states, municipal governments, and water suppliers who implement those requirements.
Learn more about Clean Water Act
https://brainly.com/question/4004573
#SPJ4
Plants that receive their food from hosts are called _____.
Answers
Answer:
In Science last year, they called them, Parasitic Plants
Explanation:
Answer:
Holoparasites get all of their food and nutrients from a host plant. Rafflesia and the dodder are holoparasites. The term "hemiparasite" refers to an organism that gets some of its nutrients from its host but also performs photosynthesis (the process by which non-parasitic plants make their own food).
Explanation:
which process is based on dna recombination? homologous recombination bacterial conjugation all of these dna repair crossover
Answers
Crossover is the process based on DNA recombination.
The process of recombining the genetic material of two parents to create a new combination of genes is known as recombination. DNA recombination is a technique that enables cells to exchange genetic material, allowing for the exchange of genetic information. Homologous recombination, bacterial conjugation, and crossover all involve DNA recombination.
Homologous recombination is a DNA repair process that occurs in cells that have experienced DNA damage. It's a procedure that entails the transfer of genetic material from one DNA molecule to another. The procedure is most common in cells that have stopped dividing or have stopped dividing altogether.
Homologous recombination is a very effective mechanism for repairing DNA damage, and it is commonly used by cells to repair double-strand breaks. Bacterial conjugation is a process that allows bacteria to transfer genetic material, such as plasmids, from one bacterial cell to another. Bacteria use this mechanism to transmit genetic material between cells, allowing them to pass on beneficial traits like antibiotic resistance.
Crossover is a DNA recombination mechanism that occurs during meiosis. The chromosomes' maternal and paternal copies swap genetic information during this process, resulting in new combinations of genes in the offspring's cells. Crossover is responsible for the genetic diversity of the offspring and is a critical component of evolution.
Learn more about DNA: https://brainly.com/question/16099437
#SPJ11
8
Which evidence can the student collect to support her hypothesis?
A. She can visually count the number of rocks in the bottle.
B. She can observe condensation on the inside of the bottle.
C. She can add a new plant to the plastic bottle every day.
D. She can observe precipitation in her neighborhood every day.
Answers
The evidence can the student collect to support her hypothesis is she can visually count the number of rocks in the bottle. Thus, option A is correct.
What is experiment?
An experiment has been defined as process that has been designed to diagnose the hypothesis which has the portion of scientific method or procedure.
Scientific experiment has been done by testing the particular medicine on an animal and by observing the impact of medicine on the animal as well as the reaction of the animal.
There are mainly three types of the scientific experiments and these are experimental which consist of major level of scientific experimentation. The second type has Quasi- experimental and third type is non- experimental study or reasearch.
Therefore, The evidence can the student collect to support her hypothesis is she can visually count the number of rocks in the bottle. Thus, option A is correct.
Learn more about experiment on:
https://brainly.com/question/11256472
#SPJ1
Scientists admit the fossil record of human evolution is incomplete. knowing this, then why do scientists believe that humans evolved from ape-like ancestors?
Answers
Scientists believe that humans evolved from ape-like ancestors despite admitting that the fossil record of human evolution is incomplete because of the following reasons:Most scientists consider the evolutionary theory, which indicates that humans evolved from ape-like ancestors, to be a sound and extensively researched concept.
Despite the fact that the fossil record is still incomplete, new fossils and the results of comparative genomic research have emerged in recent decades, supporting the notion of human evolution from ape-like ancestors.Also, when studying human evolution, scientists use many other techniques besides analyzing fossils. Scientists believe that humans evolved from ape-like ancestors despite admitting that the fossil record of human evolution is incomplete because of the following reasons:Most scientists consider the evolutionary theory, which indicates that humans evolved from ape-like ancestors, to be a sound and extensively researched concept. These include genetic research, observing the behavior and anatomy of current primates, and studying the geographical distribution of hominid fossils. Together, these data points have led the majority of scientists to support the concept of human evolution from ape-like ancestors, despite the incomplete fossil record.
learn more about evolutionary
https://brainly.com/question/31867289
#SPJ11
frank has type A blood (AA or AO) and margarita has type B (BB or BO) blood. They have a new baby. Vinnie, with type O blood. Is this possible or should frank accuse margarita of cheating?
Answers
Answer:
It is technically possible, if and only if, both parents have AO and BO blood.
Explanation:
the only way (most of the time) a child can get O blood is if both genes accepted by the parents are O. That would mean both parents would have to have O recessive genes.
Which of the following macronutrients is considered ""the basic building block"" of organic compounds and life more generally? a)nitrogen b)carbon c)sulfur d)hydrogen e)phosphorus"
Answers
Carbon is considered the basic building block of organic compounds and life more generally.
Carbon is unique among the listed macronutrients (nitrogen, sulfur, hydrogen, phosphorus) as it has the ability to form strong covalent bonds with other carbon atoms, as well as with other elements like hydrogen, oxygen, nitrogen, and sulfur. This property allows carbon to create an immense variety of organic compounds, which serve as the fundamental building blocks of life.
Organic compounds, including carbohydrates, lipids, proteins, and nucleic acids, all contain carbon as a key component. Carbon's versatility in forming stable bonds and its ability to create complex molecular structures make it essential for the formation of biological molecules and the intricate processes that sustain life.
While the other macronutrients listed (nitrogen, sulfur, hydrogen, phosphorus) also play important roles in biological systems, it is carbon that serves as the backbone of organic compounds, enabling the diversity and complexity of life on Earth.
To know more about macronutrients
brainly.com/question/29789481
#SPJ11
Being prepared for severe weather can make a person feel safer and less fearful.
Select how the author supports this perspective in the text "Wild Weather."
The author explains how they feel about people who are not prepared for bad storms.
The author gives information on ways to prepare for different types of severe weather.
The author shares stories about different people who survived hurricanes and tornadoes.
The author tries to persuade their reader to move to places where wildfires don't occur.
Answers
Answer:B
Explanation:
Trust me
Which is a cofactor?
A. NAD
B. H2O
C. ATP
D. CO2
Answers
Answer:
Atp
Explanation:
Are the follow sentences true about ants?
Queen ants are the founders of their colonies.
Princesses, and virg in queens, that once they mate, they will lay their eggs to start there own colonies.
Worker ants, are small ste rile females that forage for food, take care of there young, and help expand the colonies.
Soldiers are large steri le females. They help workers reach food, by clearing paths, and protecting the colonies.
Drones, are the only male ants in the colonies, and their only purpose is to mate with a princess ant, and make offspring, and once they do, they die.
Answers
Answer: All statements are correct.
Explanation: Worker ants do take care of their young and help forage for food while soldier ants protect the colonies and help clear paths for smaller ants to reach food. Drones are the only males and they also die not too long after mating. Princesses and vir-gin queens do mate and start their colonies, which means that they are also the founder of their colonies.
Hope this helps! :)