which term refers to an abnormal heart sound that is most commonly a sign of defective heart valves?
Answers
Heart murmur refers to an abnormal heart sound that is most commonly a sign of defective heart valves.
What is Heart murmur?Heart murmurs represent an atypical noise heard during physical examination of patients' hearts using a stethoscope. Such sounds stem from turbulence in blood flow within the organ and are often distinguished by a characteristic whooshing, rasping or blowing quality.
A variety of conditions may contribute to causing these noises ranging from congenital cardiac defects to acquired conditions such as hypertension or thyroid disease along with myocardial illnesses even in cases where there isn't any immediate cause identifiable upon close examination.
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Related Questions
The student wants to see the cells at a greater magnification. Describe the steps that she should take.
Answers
Gradually turn the crude focus knob until you can see the cells. Turn the fine focus knob slowly until the cells are in focus and visible.
What is magnification?Magnification is the process of enlarging something's apparent size rather than its physical size.
This enlargement is measured by a calculated number known as "magnification." When this number is less than one, it refers to a size reduction, also known as minification or de-magnification.
The magnification of a compound microscope is the product of both lenses, so if the microscope has a 10x eyepiece and a 40x objective, the total magnification is 400x. Magnification is defined as the ratio of the image size to the object size.
The student should use the adjustment knobs to bring the sample back into focus after selecting the x40 or x10 objective lens.
Thus, these steps are necessary to see cell's magnification.
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c = speed of light = 3.00 × 108 m/s
An electromagnetic wave with a wavelength of 5.00 cm is in the microwave region of the spectrum. What is the frequency of this microwave?
Answers
The frequency of the microwave with a wavelength of 5.00 cm is 6.00 x 10^9 Hz.
What is the frequency of the microwave?We can use the formula that relates the frequency of an electromagnetic wave to its wavelength and the speed of light:
frequency = speed of light / wavelength
We are given the wavelength of the microwave as 5.00 cm, which we first need to convert to meters by dividing by 100:
wavelength of the microwave = 5.00 cm / 100
wavelength = 0.05 m
We are also given the speed of light, which is c = 3.00 x 10^8 m/s.
Now we can plug in these values into the formula:
frequency = c / wavelength
frequency = (3.00 x 10^8 m/s) / (0.05 m)
frequency = 6.00 x 10^9 Hz
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What is the job of the cell membrane
Answers
Answer:
regulates the transport of materials entering and exiting the cell. In simpler terms, allows which materials can enter or exit the cell.
Answer the following questions;
a) write 3 examples about reduction of complexity in simulation
b) how to describe models
c) give 3 examples to systems
d) how to classify systems
e) what is sytem analysis
f)how to check models
g) what is numerical simulation
h) explain MBS(multi body systems
i) what is optimization
Answers
Reduction of complexity in simulation can be achieved through abstraction, simplification, and optimization techniques.
How can models be described in simulation?Simulation models can be described using mathematical equations, algorithms, or graphical representations that capture the essential characteristics and behaviors of the system being simulated.
Examples of systems include an ecosystem, a manufacturing assembly line, and a transportation network.
Systems can be classified based on their complexity, behavior, and interdependencies. They can be categorized as simple or complex, deterministic or stochastic, and open or closed systems.
System analysis involves studying and understanding the components, interactions, and behavior of a system to gain insights, make improvements, or solve problems.
Model checking involves verifying the correctness, consistency, and validity of a simulation model by comparing its outputs or behavior with expected or desired outcomes.
Numerical simulation refers to the process of using mathematical models and algorithms to approximate and solve complex real-world problems or phenomena.
Multi-Body Systems (MBS) are mechanical systems consisting of multiple interconnected bodies or objects whose motion and interactions are governed by Newton's laws of motion.
Optimization refers to the process of finding the best or optimal solution to a problem by systematically exploring and evaluating different options or configurations based on defined criteria or objectives.
In summary, reduction of complexity in simulation can be achieved through techniques such as abstraction, simplification, and optimization.
Models in simulation can be described using mathematical equations, algorithms, or graphical representations.
Systems can vary from ecosystems to manufacturing assembly lines, and they can be classified based on various criteria. System analysis involves studying and understanding the components and behavior of a system.
Model checking is used to verify the correctness of simulation models. Numerical simulation uses mathematical models to solve complex problems.
Multi-Body Systems (MBS) involve interconnected mechanical bodies governed by Newton's laws. Optimization aims to find the best solution based on defined criteria.
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What do animals such as clams and oysters extract from the water to build their shells?
A) fructose
B) silicon
C) hydrogen
D) carbon
Answers
Animals such as clams and oysters extract carbon from the water to build their shells. Thus, the correct option for this question is D.
What are the characteristics of carbon in the body composition of organisms?The characteristics of carbon in the body composition of organisms are as follows:
It is considered an important and essential element in the construction of the body composition of organisms. This is because it makes up all the life methodologies with the construction of other cells and structures of organisms.Organisms like clams and oysters extract carbon through the secretion of proteins and minerals from their mantle which is an extracellular surface. This stimulated the construction of new layers of shells. These organisms actively take part in the carbon cycle.
Therefore, carbon is extracted from the water to build shells for the animals such as clams and oysters. Thus, the correct option for this question is D.
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Please Hurry WILL GIVE BRAINLIST
An example of sunlight passing through clouds during sunset, results in what is often called the cloud's silver lining. Pastel shades of blue, pink, purple, and green can be observed at times of cloud cover. What is the cause of these patterns in the sky?
Responses
Water in the atmosphere and within the clouds themselves cause light waves to refract and reflect, creating an assortment of colors.
Water in the atmosphere and within the clouds themselves cause light waves to refract and reflect, creating an assortment of colors., EndFragment,
The patterns occur when light is diffracted from water droplets within the clouds. The amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones.
The patterns occur when light is diffracted from water droplets within the clouds. The amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones.
StartFragment, The patterns occur when light is diffracted from water droplets within the clouds. The amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones., The patterns occur when light is diffracted from water droplets within the clouds. The amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones., EndFragment, ,
The patterns occur when light is absorbed by water droplets within the clouds. The amount of absorption that occurs depends on the temperature of the air.
The patterns occur when light is absorbed by water droplets within the clouds. The amount of absorption that occurs depends on the temperature of the air., EndFragment,
The patterns occur when light is reflected from water droplets within the clouds. The amount of reflection that occurs depends on the wavelength of the light, and shorter wavelengths are reflected at a greater angle than longer ones.
Answers
The cause of the color patterns in the sky is when light is diffracted from water droplets within the clouds, the amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones which is therefore denoted as option D.
What is Diffraction?This is a term which is described as the process of light bending around an obstacle or spreading out after it moves through a small or tiny space.
We should also be aware that it is dependent on the wavelength of the light such that those with a shorter wavelengths are usually diffracted at a greater angle than longer ones which is therefore the reason why the color pattern is observed in the sky and is therefore the reason why it was chosen as the correct answer.
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Which statement about the cell membrane is true?
A) It contains cellulose and sugars that are involved in communication.
B) It is present in animal cells only.
C) It is rigid and elastic for supporting the cell's shape.
D) It prevents harmful substances from entering a cell.
Answers
Answer:
Its D, The cell membrane(also known a the plasma membrane) has a job in which it has to allow passage in and out of the cell. Therefore it can prevent harmful substances from entering the cell. Think of it as security, either allowing you access or denying you depending on if you're a threat
Answer:
D) it prevents harmful substances from entering a cell
Explanation:
The entire purpose of the cells membrane is to contain its organelles, the structures within it and prevent them from getting harmed by outside material.
plasesssss helppppp meeeee
Answers
Answer:
zy
Explanation:
zy
i dont think its c..? CAN U GUYS HELP
Answers
its def not c im pretty sure its b
hope this helps
Below are some events that take place during cell division? Which would be the correct order?
I. Chromosomes line up at the equatorial plane
II. Chromosomes condense, becoming shorter and thicker
III. Chromosomes have long and nuclear membrane forms around them
IV. Centromeres divide and the chromosomes move to the opposite poles
a. 2-1-4-3
b. 3-4-1-2
c. 1-3-2-4
d. 4-1-2-3
Answers
The correct order of events during cell division is: 3-4-1-2, the correct option is b.
During cell division, several key events occur in a specific order.
Chromosomes have long and nuclear membrane forms around them: Before cell division occurs, the chromosomes within the nucleus start to undergo changes. Centromeres divide and the chromosomes move to the opposite poles: At this stage, the centromeres, which hold the sister chromatids together, divide. Chromosomes line up at the equatorial plane: Once the chromosomes have reached the opposite poles of the cell, they align themselves along the equatorial plane or the metaphase plate. Chromosomes condense, becoming shorter and thicker: In this step, the chromosomes further condense, becoming even shorter and thicker.Thus, the correct order, b. 3-4-1-2, accurately represents the sequence of events during cell division.
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Heavier female black bears produce more offspring. Which statement describes a genetic factor that might negatively affect a female black bear's reproductive success
Answers
Answer:
The bear can digest fruits easily, but has difficulty digesting fats.
Explanation:
Answer:
If the bears started losing weight becuase of food shortage or, The genitecs change so the bear was now much lighter than before.
Explanation:
Just a guess
How does gene expression differ between human fibroblasts and induced pluripotent stem cells (iPS)?
Answers
Answer:
Both have different gene expression due to produce from different sources.
Explanation:
Gene expression is different between human fibroblasts and induced pluripotent stem cells because both cells are formed from different sources. Human fibroblasts is produced from ''mesenchyme'' a type of connective tissue whereas induced pluripotent are the stem cells which can be produced from adult cells so we can say that both have different gene expression.
Both have different gene expression due to produce from different sources.
The following information should be considered:
Gene expression is different between human fibroblasts and induced pluripotent stem cells since both cells are created from different sources. Human fibroblasts is generated from ''mesenchyme'' a type of connective tissue while on the other hand, induced pluripotent are the stem cells that could be generated from adult cell.Learn more: https://brainly.com/question/20492533?referrer=searchResults
Extra food is stored in a roots _______?
A.vascular cylinder
B.cortex
C.epidermis
D.pith
Answers
Plz I really need help I'll give all my points (20)
Answers
Answer:
I think it may be RNA
Geckos are a type of small lizard that live in tropical areas. Geckos are often eaten by birds, snakes and larger lizards so they need to blend into their surroundings. In one area, scientists had always found brown and green geckos that blended in with the grass and the leaves on the ground. Over time, though they found yellow geckos in the same population. Three students were talking about why there were yellow geckos. Ciena thought that the change came from a mutation in the population. Tibor thought the change came from the environment. Sasha though that Ciena and Tibor were both right. Who do you agree with and why do you think that?
Answers
Answer:
Not going to say this is right but, I think that Tibor is correct because if the land has changed more over time then the yellow ones have adapted to the new living conditions while the green one have found ways to live in that environment.
Which enzyme cuts double-stranded RNAi precursors to 21-25 base-pair segments?
RISC
Argonaute
Dicer
Drosha
Answers
The enzyme that cuts double-stranded RNAi precursors to 21-25 base-pair segments is Dicer.
Dicer is responsible for processing the RNAi precursors into shorter segments that can be used by the RNA-induced silencing complex (RISC) to target specific mRNA molecules for degradation or translational repression. Dicer plays a pivotal role in the initiation of RNA silencing by recognizing double-stranded RNAs (dsRNAs) and cleaving them into small RNAs using its RNase III-like double-stranded RNA-specific nuclease activities. Small RNAs are largely classified into two groups: small-interfering RNAs (siRNAs) and microRNAs. Dicer is classified as a class IV RNase III enzyme, and, in humans, it contains a helicase domain, two RNase III domains, two dsRBDs, and a Piwi/Ago/Zwille (PAZ) domain.
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Which of the following is the conclusion that Miller and Urey reached?
Answers
What did Miller and urey conclude from their experiment? simple organic molecules, including amino acids ( the building blocks of proteins), could have been made from gases in the earth's primitive atmosphere. This conclusion is called the chemical origin of life
Treaty that ended World War I, it imposed punishing terms on the Germans
A.Blitzkrieg
B.Manchuria
C.Treaty of Versailles
D.Lend-Lease
Answers
Answer:
C. Treaty of Versailles
Explanation:
The Treaty of Versailles was the agreement that officially ended World War I in 1919. It imposed harsh terms on Germany, holding them primarily responsible for the war and its damages. The treaty required Germany to pay reparations, give up territories, demilitarize, and accept blame for the conflict. These punitive terms and the economic burden placed on Germany contributed to social and economic unrest, eventually paving the way for World War II.
in general, a muscle that crosses on the anterior side of a joint produces ________.
Answers
Answer: Flexion
Explanation:A muscle that crosses on the anterior side of a joint produces flexion. A muscle that crosses on the posterior side of a joint produces extension.
Answer: Flexion
Explanation:
Is domestication the process where animals are trained to do tricks useful for human needs?
Answers
Answer:
Not exactly, Domestication is the process of adapting wild plants and animals for human use.
Explanation:
domestication is not the process where animals are trained to do tricks useful for human needs instead it is the process of adapting wild plants and animals for human use.
What is the formula for the compound that crystallizes with a cubic closest packed array of sulfur ions, and that contains zinc ions in 1/8 of the tetrahedral holes and aluminum ions in 1/2 of the octahedral holes
Answers
The formula for the compound described is ZnAl2S4. In a cubic closest packed (ccp) structure, each corner of the unit cell is occupied by a sulfur ion, and each face-centered position is also occupied by a sulfur ion.
For the tetrahedral holes, the compound contains zinc ions (Zn) in 1/8 of these holes. Since there are 8 tetrahedral holes in the unit cell, 1/8 of them being occupied by zinc ions means there is 1 zinc ion present. For the octahedral holes, the compound contains aluminum ions (Al) in 1/2 of these holes. There are 4 octahedral holes in the unit cell, so 1/2 of them being occupied by aluminum ions means there are 2 aluminum ions present.
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What happens to 90% of carbon that is not passed to the next trophic level when a primary consumer takes in energy from a producer
Answers
Answer:
90% of carbon that is not passed to the next trophic level when a primary consumer takes in energy from a producer is lost as heat or used up by the body.
Explanation:
In the pyramid of energy, energy decreases as an organism move from one tropic level to the next. Only 10% of the energy at any trophic level is transferred to the next level.
The 10% consumed by an organism is stored in the body, the remaining 90% is lost as heat or used up for growth, reproduction, etc
help me please i’m learning in anatomy and physiology
Answers
During a bacterial infection, macrophages will seek out and engulf the invading bacteria into vesicles via phagocytosis. The bacteria will then be degraded inside the macrophage. Which organelle do you think participates directly in this degradation process
Answers
After the microorganism is ingested by the white blood cell a vesicle that contains the pathogen is formed. This vesicle fuses with an organelle that contains up to 40 hydrolytic enzymes. That organel is called a lysosome
what are the basic differences between the left and the right hemispheres of the cerebrum?
Answers
The left and right hemispheres of the cerebrum exhibit functional specialization, with the left hemisphere primarily responsible for language and logical reasoning, while the right hemisphere is involved in spatial awareness, creativity, and emotional processing.
The left hemisphere of the cerebrum is predominantly involved in language functions, including speech production (Broca's area) and language comprehension (Wernicke's area).
It is also associated with logical reasoning, analytical thinking, and mathematical abilities. Additionally, the left hemisphere controls the right side of the body.
In contrast, the right hemisphere of the cerebrum is more involved in spatial awareness, visual-spatial skills, and recognizing patterns. It plays a significant role in creativity, artistic expression, and holistic thinking.
The right hemisphere also contributes to emotional processing and interpreting nonverbal cues. Furthermore, the right hemisphere controls the left side of the body.
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During translation, which molecule bears the codon? -the anticodon? the peptidyl transferase? the A site? What is the difference between the A site and P site?
Answers
During translation, the molecule that bears the codon is mRNA (messenger RNA), while the molecule bearing the anticodon is tRNA (transfer RNA). Peptidyl transferase is an enzyme that plays a crucial role in forming peptide bonds between amino acids during protein synthesis. The main difference between the A and P sites is their function during translation.
The A site (aminoacyl-tRNA site) and the P site (peptidyl-tRNA site) are two adjacent sites in the ribosome, which is the molecular machine that carries out translation.
The A site is where the incoming aminoacyl-tRNA, carrying the next amino acid to be added to the growing polypeptide chain, binds to the ribosome. The anticodon of the tRNA base pairs with the codon on the mRNA, ensuring that the correct amino acid is added to the chain. Once the tRNA is in the A site, the peptidyl transferase catalyzes the formation of a peptide bond between the amino acid in the A site and the polypeptide chain in the P site.
The P site holds the tRNA carrying the growing polypeptide chain. After the peptide bond formation, the tRNA in the P site, now without its amino acid, is transferred to the E site (exit site) and released from the ribosome. The ribosome then moves along the mRNA, shifting the tRNA with the polypeptide chain from the A site to the P site, making room for the next aminoacyl-tRNA to enter the A site.
In summary, the A site is where the new aminoacyl-tRNA binds, while the P site holds the tRNA with the growing polypeptide chain during translation.
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How many seconds are in half an hour?
Answers
Answer:
1800
Explanation:
60*30=1800
Hope this helps!
during the development of most animals, cleavage leads to __________.
A. the formation of a zygote. B. the formation of a gastrula. C. fertilization.
Answers
During the development of most animals, cleavage leads to gastrula.
Cleavage is the initial sequence of rapid cell divisions that follows fertilization. The cleavage process leads to the division of the zygote into numerous cells known as blastomeres. The division of blastomeres has several distinct characteristics.
The blastomeres are small and possess high nuclear to cytoplasmic ratios. Furthermore, the zygote becomes a blastula as a result of this process. Cleavage is a crucial stage in animal development because it leads to the development of the embryo. During the development of most animals, cleavage leads to the formation of a gastrula.
This is due to the fact that the blastula is converted into a gastrula during the next developmental stage. It is formed when the blastopore is elongated and becomes a gastrulation fold. This folds the wall of the blastula inward to create an embryonic structure known as the gastrula. Hence, the correct option is B. the formation of a gastrula.
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what percentage of global water is available as freshwater for use by terrestrial organisms?
Answers
Only about 2.5% of the Earth's water is freshwater, and of that small percentage, only about 0.3% is readily available for use by terrestrial organisms.
The majority of freshwater is locked up in glaciers and ice caps, while much of the remaining freshwater is underground or in inaccessible locations. This limited availability of freshwater highlights the importance of conservation and sustainable use of this valuable resource.approximately 2.5% of global water is available as freshwater for use by terrestrial organisms. The vast majority of the Earth's water is saline, making it unsuitable for direct use by terrestrial organisms. Of the total global water supply, only about 2.5% is freshwater. This small percentage of freshwater is crucial for supporting terrestrial life, as it is used for various purposes such as drinking, irrigation, and industrial processes.
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Approximately 2.5% of the Earth's water is freshwater, but the majority of it is locked up in glaciers, ice caps, and underground aquifers.
Only a small fraction of freshwater, about 0.3% of the global water supply, is readily available as surface water in rivers, lakes, and swamps. This accessible freshwater is crucial for supporting terrestrial organisms, including plants, animals, and humans.
It is important to note that this percentage represents the global average, and the availability of freshwater can vary significantly by region. Some areas may have abundant freshwater resources, while others may face water scarcity and limited access to this vital resource.
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This Roman snail, this cuttlefish, and this mussel have similarities and differences in their body structures. What does the information about these structures tell you about the ancestors of these species?
Answers
Answer:
The answer is C
Explanation:
Because they all have the same design, they will all be the same.