Identify the structure and function of the heart
Answers
hello,
the human heart is one big muscle in our body that functions via electric signals to and from our brain. There are 4 different chambers that make up the heart:
- The "Atria" (upper two chambers of the heart)
- "Ventricles" (lower two chambers)
The heart wall consists of three layers....
"Epicardium" - The outer layer of the "wall" of the heart.
"Myocardium" -The muscular middle layer of the wall of the heart.
"Endocardium" The inner layer of the heart.
In the simplest terms, our hearts work hard to move oxygenated blood to our muscles and organs so we can function properly.
There are a ton of easily accessible articles on the anatomy of the heart - I encourage you to check it out!
Hope this helped! =]
Related Questions
one parent is homozygous for a certain trait and the other is heterozygous. what fraction of their offspring would you expect to be heterozygous? support your answer with punnett squares.
Answers
In a heterozygous hybrid where both parents are heterozygous for a particular trait, the genotypic ratio is 1:2:1. In a cross where one parent is heterozygous and the other is homozygous for a characteristic, the genotypic ratio is 1:1. Sources.
The genotypic ratio illustrates how frequently an organism's characteristic will appear in the progeny when genes for specific traits are crossed. Using a simple monohybrid cross and the Punnett square method, this is more simply comprehended.
This cross's genotypic ratio is represented as 1:2:1. Each gene in both plants and animals carries two alleles, or variations, one from each parent. The Punnett equation is used to forecast all the phenotypic changes for the progeny when male and female gametes combine (cross).
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After a tadpole develops legs and a wide mouth, it is called a
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The life cycle starts with an egg, which hatches into a tadpole, the tadpole eventually gains hind and front legs, turns into a froglet..
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar.
The following chemical equation shows the combustion of ethane. Balance the equation by filling in the coefficients.
C2H6 +
O2 →
CO2 +
H2O
Answers
Answer:
2,7. 4,6
Explanation:
2 C2H6. +. 7O2. ==. 4. CO2. +. 6 H2O
Note. In such questions balance C first then H and finally O
It will be easier
What part of the respiratory passageway primarily functions to warm, humidify, and filter inhaled air?.
Answers
A student is drawing a model of the carbon cycle. Which caption should he include to explain how herbivores contribute to the carbon cycle from the food they eat?
Answers
Answer:
Cellular respiration
Explanation:
Herbivores are organisms that feed on plant materials solely. They are usually animals like sheep, cattle, goats with four stomach compartments. They are part of the global carbon cycle which shows how carbon is circulated in nature.
Plant matter is broken down by herbivores through a series of metabolic steps. The final product is a glucose laden material which is the raw material needed for cellular respiration. When oxygen combines with the glucose, energy is liberated, and carbon dioxide, a waste product is released into the atmosphere. This way, carbon is cycled in the ecosystem.Answer:
Herbivores eat plants, producing carbon dioxide during cellular respiration that is released into the atmosphere.
Explanation:
Hemoglobin is the protein in red blood cells that binds oxygen. If a mutation occurs in the DNA that codes for hemoglobin, the structure of hemoglobin can change. The change in structure of hemoglobin can then change the shape of red blood cells, and some mutations can cause red blood cells to become sickle-shaped.
Sickled red blood cells carry less oxygen than normal red blood cells. What does this demonstrate about mutations in the DNA that codes for hemoglobin?
A.
These mutations can change the structure of oxygen so that it does not bind to hemoglobin.
B.
These mutations decrease the amount of oxygen available to bind with hemoglobin.
C.
These mutations are unable to affect the structure and function of hemoglobin.
D.
These mutations can change the structure and function of hemoglobin.
Answers
The fact that sickled red blood cells carry less oxygen than normal red blood cells demonstrates that the mutations in the DNA that codes for hemoglobin can change the structure and function of hemoglobin.
The correct option is D.
What is hemoglobin?Hemoglobin is a protein that is found in red blood cells that carries oxygen from the blood to cells and tissues where they are needed.
The function of hemoglobin is related directly to its structure.
A mutation in the gene that codes for hemoglobin will result in adefor ation of the structure of hemoglobin, us rendering it unable to transport oxygen effieciently.
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a large and increasing number of genetic tests are available to prospective parents and children. even as these testing methods become more and more sophisticated, what is one thing technology will never solve?
Answers
The one thing technology will never solve is the ability to prescribe the correct course of action based on test results.
Genetic technology is already right here withinside the shape of genetic trying out. This includes checks that become aware of which version of a gene you've got inherited. They have quite a few uses, inclusive of diagnosing uncommon sicknesses and industrial offerings that offer you with clinical facts or own circle of relatives history. Genetic testing out can offer best restrained facts approximately an inherited condition. The check regularly cannot decide if someone will display signs and symptoms of a sickness, how extreme the signs and symptoms will be, or whether or not the sickness will development over time.
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The two categories of stem cells in the human body are embryonic stem cells and adult stem cells. Therefore, stem cells can be found in 130 Multiple Choice O embryos, after division of the original zygote O Skin cells O the bone marrow
Answers
The two categories of stem cells in the human body are embryonic stem cells and adult stem cells. Therefore, stem cells can be found in a. embryos
These cells can be found in embbryos specifically after the division of the original zygote, the ability to develop into any type of cell in the body, making them pluripotent. Their potential uses include regenerating damaged tissues and treating various diseases. On the other hand, adult stem cells are found in the bone marrow and other tissues such as skin, blood, and brain. These cells are more specialized and typically can only develop into a limited number of cell types related to their tissue of origin.
Adult stem cells play a crucial role in repairing and maintaining the body's tissues, as they can replace damaged cells and help in the healing process.In summary, stem cells can be found in embryos after the division of the original zygote and in the bone marrow, as well as other adult tissues like skin cells. These two categories of stem cells have different properties and potential uses, making them essential for maintaining the body's health and well-being.
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What are missense nonsense and silent mutations?.
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The glycine-glycine mutation is a Silent mutation and the Lysine stop mutation is a Nonsense mutation. Point mutation is the alteration of the single nucleotide base in the sequence.
Mutations are changes in the genetic material's nucleotide sequence brought on by substitution, deletion, or insertion of nucleotides that result in altered proteins.
Mutations can take many different forms.
The term "silent mutation" refers to a mutation that has no effect on the protein that is generated. It typically results from replacing one nucleotide with a nucleotide of the same kind as in the glycine-glycine mutation.
It is referred to as a nonsense mutation if a single nucleotide mutation results at the end of transcription.
similar to how lysine stops.
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in the context of the physiological effects of nicotine, nicotine mimics blank by acting at several nicotinic subtypes of cholinergic receptor site.
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In the context of the physiological effects of nicotine, nicotine mimics acetylcholine by acting at several nicotinic subtypes of cholinergic receptor site.
Nicotine is a chemical extracted from the tobacco plant and can be highly addictive. The drug is also used medicinally to reduce anxiety. Nicotine can competitively bind to the nicotinic receptors that are actually for acetylcholine and cause the brain and body to be desensitized. This happens due to depolarization of the nerve cells.
Acetylcholine is a neurotransmitter. The chemical controls bodily activities like: muscle control, autonomic body functions, learning, memory, etc. The neurotransmitter is released during the parasympathetic nervous activity.
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In guinea pigs, the allele for black fur(B) is dominant over the allele for
brown fur(b), and the allele for short fur (F) is dominant over the allele
for long fur(1). What percent of the offspring of a BbFf x bbff cross will
be heterozygous for both traits?
Select one:
100%
25%
0%
50%
Answers
Answer: 50%
Explanation:
The ability to use old cells is an advantage of _____.hybridization DNA testingrestriction fragment length polymorphism (RFLP) polymerase chain reaction (PCR) all DNA testing procedures
Answers
The ability to use old cells is an advantage of all DNA testing procedures.
What is the Jarman-Bell principle?
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The Jarman-Bell principle is a rule of thumb in economics and business that states that the marginal cost of production should be equal to the marginal revenue.
This means that the price of a good or service should be determined by the cost of producing the next unit of the good or service. The principle was first proposed by English economist Alfred Marshall in 1890 and popularized by American economist and professor of economics William J. Bell in 1925.
The principle applies to many aspects of business, from pricing to production decisions. By understanding the Jarman-Bell principle, businesses can make better decisions on how and when to produce goods, how to price those goods, and how to maximize their profits. This is because they will understand the costs and revenues associated with their production decisions and be able to make more informed decisions.
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Which homeostatic process requires energy to move particles across the plasma membrane?
A. active transport
B. passive transport
C. dynamic equilibrium
D. osmosis
Answers
Active transport requires energy to move particles across the plasma membrane. Therefore, the correct option is A.
What is Active transport?A type of cellular transport known as active transport uses energy to push molecules or ions across their concentration gradient (from an area of low concentration to an area of high concentration) across the plasma membrane. It is powered by cellular energy, which is usually present in the form of ATP (adenosine triphosphate).
Because it enables the cell to move important molecules against their concentration gradient and maintains the constancy of the cell's internal environment, this mechanism is essential for preserving homeostasis in the cell. Active transport requires energy to move particles across the plasma membrane.
Therefore, the correct option is A.
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what characteristics or adaptations did the extinct organisms lack to not be able to survive during the triasic jurrasic
Answers
The characteristics or adaptations the extinct organisms lack to not be able to survive during the triassic jurrasic period is adaptation for burrowing, specialized teeth, and dehydration resistance.
What are the adaptations?During the Triassic-Jurassic, extinct organisms lacked certain characteristics or adaptations that prevented them from surviving. The following are some examples of such characteristics or adaptations: Adaptations for Burrowing: Many Triassic species had evolved adaptations for burrowing that allowed them to escape harsh environments or predators. However, such adaptations did not help them survive the Jurassic era's drier and hotter conditions.
Specialized Teeth: Various Triassic species had specialized teeth to eat tough plants, which were abundant during that era. But, after the Permian extinction, new plant types emerged, and these specialized teeth did not allow these species to survive. Dehydration Resistance: Many Triassic species could withstand dehydration, which was a necessary adaptation in arid conditions. However, the Jurassic era had much drier and hotter conditions, which meant that the species could not withstand the new environmental conditions.
In summary, the lack of suitable adaptations for the new environmental conditions, particularly the drier and hotter conditions, was one of the main reasons why certain extinct organisms could not survive during the Triassic-Jurassic era.
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i need sleep help me out
Answers
One cell, which performs all of the processes required by the organism, makes up a unicellular organism.
The correct option is (a) performs all of the function
Explain features of unicellular organisms?A single cell makes up a unicellular creature, also referred to as a single-celled organism, as opposed to a multicellular organism, which is made up of numerous cells. Prokaryotic and eukaryotic organisms are the two broad categories into which all organisms fall. Bacteria and archaea are two divisions of unicellular prokaryotes. While most eukaryotes have many cells, others do not, including protozoa, single-celled algae, and single-celled fungi. The earliest known forms of life are believed to be unicellular organisms, with the emergence of early protocells possible between 3.8 and 4.0 billion years ago. While certain prokaryotes are specialized cells with unique tasks, they do not always live in colonies. Together, these organisms must carry out all necessary life activities for each cell to survive.Learn more about the Unicellular organism with the help of the given link:
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Skin cells are able to pass on their characteristics to new skin cells because of which of the following?
Answers
Answer:
Explanation:
Do nguyên phân làm tế bào con giống với tế bào mẹ ban đầu
Skin cells are able to pass on their characteristics to new skin cells because of mitosis.
What is mitosis?It is a cell division in which the chromosome number in daughter cells is same as that of parent cells."It is also called as equational division."It is used for growth, repair etc.What is heredity?"It is the transfer of genetic information and hence traits from parents to offsprings." It is a biological process.What are skin cells?Skin cell is a term which is used to denote 4 cells of the epidermis.
They are:
keratinocytes, melanocytes, Langerhans cells,Merkel cells.To learn more about cells, mitosis, and chromosome here,
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Typical cells in the human brain contain 46 chromosomes, if a brain cell undergoes mitosis, how many chromosomes do you expect to be in each of the cells after the process is complete?
Answers
Answer:
Each daughter cell will have 46 chromosomes.
Explanation:
Because a chromosome becomes 2 chromosomes when split into two, the parent cell is still giving ech daughter cell thge same amopunt of choromsomes as it has.
How do red blood cells help animals?
Answers
Answer:
The function of RBCs is to carry oxygen to the tissues at pressures sufficient to permit its rapid diffusion. Explanation:
Answer:to carry oxygen from lungs to tissues
Explanation:they contain haemoglobin, which has Fe that binds to the oxygen to be carried
Item 5
An astronomical unit (AU) is the average distance of Earth from the Sun. Use the table that shows the average distance of each planet in our solar system from the Sun.
How much farther is Jupiter from the Sun than Mercury?
Answers
Scientists who study the anatomy of the systems in the human body focus their studies on
only the function of the organ systems in the body.
only the structure of the organ systems in the body.
the function of the organs and organ systems in the body.
the structure of the organs and organ systems in the body.
Answers
Explanation:
Scientists who study the anatomy of the systems in the human body focus their studies on the structure and form of an organism. Particularly, they examine the relationships among parts of the body, as well as the structure of individual organs.
Scientists who study the anatomy of the systems in the human body focus on the structure of the organ and organ systems of the body. So the correct option is D.
What is anatomy?Anatomy is a field of biological sciences that studies the description of body structure and their identification of living beings. Anatomy also studies the relationship of these structures with one another.
Gross anatomy is referred to the major body sections in a narrow sense after dissection. The body structures studied under gross anatomy are simply those that are big enough so that their observation does not need any kind of magnifying device.
Microscopic anatomy is the study of structures which can only be observed with the help of a microscope.
In all kinds of anatomical research, dissection is necessary because it's not really possible to study internal structures without opening them. The earliest record of the study of anatomy is from the Greeks, in fact, the word anatomy is derived from the Greek word ana temnein which means to cut-open.
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Two of the negative effects of sickle cell anemia are ______________________ ______________________________ and ______________________________________________ _______________.
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Answer:
delayed growth, episodes of pain, painful swelling of hands and feet, vision problems, frequent infections
Explanation:
Each mitochondrion has inner membranes called cristae. Why are they important to the functioning of the cell?
Answers
Answer:
Function.
Explanation:
The cristae greatly increase the surface area of the inner membrane on which the above-mentioned reactions may take place. A widely accepted hypothesis for the function of the cristae is that the high surface area allows an increased capacity for ATP generation.
functions of food preservation
Answers
Answer:
A food preservation technique is one that eliminates or avoids factors that can lead to the spoilage of food internally and externally. Increasing the shelf life of food while preserving its original flavor, color, texture, and nutritional value is the primary objective of food preservation
Answer: 1. To prevent and remove microbial contamination.
2. To inhibit microbial growth.
3. To kill contaminating pathogens.
4. To minimize food spoilage, food infection and food poisoning.
5 Foods are required to be preserved to stop or slow down food spoilage.
6 For longer food storage.
Which organelle or structure is described as a phospholipid bilayer?
A)cell membrane
B)cell wall
C)cytoskeleton
D)cytoplasm
Answers
It is the correct answer
Question 4
Blood sugar homeostasis plays an important role in our health and well-being. If
blood sugar levels get too low or high, there are serious health complications that
can result. Which two body systems regulate blood sugar levels? Click on the correct
answers.
Select 2 correct answer(s)
A-Nervous System
B-Musculoskeletal System
C-Respiratory System
D-Digestive System
Answers
a mutation in the x-linked gene ar (androgen receptor) ________.
Answers
A mutation in the x-linked gene ar (androgen receptor) can cause Androgen insensitivity syndrome (AIS).
What is the Androgen Receptor (AR)?
The androgen receptor (AR) is a protein that is found in the cytoplasm of a cell that serves as a receptor for male sex hormones known as androgens. When androgens bind to the AR, it causes a reaction in the cell, resulting in the creation of proteins that are required for the development of male characteristics.How does the AR mutation occur?Mutations in the AR gene are responsible for a variety of genetic disorders. A
mutation in the AR gene results in an abnormal androgen receptor, which can result in a variety of medical conditions. Androgen insensitivity syndrome (AIS) is one of these disorders. AIS is a condition in which the body's cells are unable to respond to androgens because the AR gene has been mutated.
AIS can cause a variety of symptoms, including:
Atypical or incomplete male sexual developmentLack of periods in femalesBreasts that are abnormally largeAIS is an X-linked recessive disorder, which means that the gene that causes it is found on the X chromosome. As a result, this disorder is more common in females than in males.
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HELP PLSSS!!! CROWN WILL BE REWARDED FOR CORRECT ANSWER!!!
Which is NOT a function of the digestive system?
A. protect your body from pathogens by providing a protective cover over your body
B. molecules are absorbed into blood and carried throughout the body
C. break down food molecules the body can use
D. wastes are eliminated
Answers
Answer:
Its, A.) protect your body from pathogens by providing a protective cover over your body
Please answer the question which I attached to this fileQuestion 6
Answers
The relationship between individuals II-5 and II-6 is that they are a couple that has two children. This can be assumed because there is a horizontal line that bonds them from the side, and a vertical line goes down their union to part sideways into two individuals (III-4 and III-5).
what is genetic variation
Answers
Answer:
Genetic variation is the difference in DNA among individuals
Explanation: