Blood flows from the atria to the ventricles during ventricular diastole, and from the ventricles to the pulmonary artery and the aorta during ventricular systole during the cardiac cycle .
The cardiac cycle is a sequence of electrical and mechanical events that take place when the heart is contracting and relaxing (diastole) (systole). Blood flows from the atria to the ventricles during ventricular diastole, and from the ventricles to the pulmonary artery and the aorta during ventricular systole.The atrial musculature begins to contract with atrial depolarization. The pressure inside the atrial chambers rises as the atria contract, pushing more blood across the open atrioventricular (AV) valves and causing a quick flow of blood into the ventricles.The atria relax (atrial diastole) and receive venous return from both the body and the lungs during ventricular contraction. The lower chambers then loosen up during ventricular diastole, enabling initial passive filling of of the thick-walled ventricles and emptying of the atria.learn more about cardiac cycle here: https://brainly.com/question/12537609
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Why do scientists use sampling
Answer:
So they can see a small portion of the final effect instead of everything at once and praying a disaster doesn't happen. For example, if the release a dangerous chemical unknowingly, they can get it under control easier if it was only a sample at that time.
This passage describes the coat graying trait in horses:
Your hair may turn gray or white as you grow older. Some horses go through a similar process called coat graying as they age. These horses are usually a darker color, such as brown or black, when they are born. Over time, the hairs of their coats lose their original color and become gray or white.
In a group of horses, some individuals have coat graying and others do not. In this group, the gene for the coat graying trait has two alleles. The allele G is for having a graying coat, and the allele g is for not having a graying coat.
Argo, a horse from this group, does not have coat graying. Argo has two alleles for not having a graying coat.
Based on this information, what is Argo's phenotype for the coat graying trait?
gg
Gg
not having a graying coat
having a graying coat
where is the question
Explanation:
If omeone made a cale model, and they hade 1 cm for every 100,000 kilometer how many centimeter would 58 million kilometer be?
The measurement should ordinarily be duplicated by a consistent scale calculation request to be a dependable gauge of the scaled boundary. This scale factor is marked as the hypothetical worth of the aftereffect of partitioning the fundamental scale boundary by the size asymptotic price.
A guide's scale might be portrayed graphically (a realistic scale), however, it is regularly communicated as a proportion or division, like 1/10,000 or 1:10,000. With these "delegate division" scales, one inch or one centimeter on the guide compares to 10,000 similar units on the ground.
Along these lines, We are mindful that 1 centimeter is comparable to 1/100000 kilometers. Subsequently, 1 cm = 0.00001 km accordingly, duplicate the quantity of cm by 0.00001 to change over from cm to km. At the end of the day, duplicate the cm esteem by 100,000 to get the km esteem.
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Who observed the variation of organism in Gala?
Evolution and Galapagos Tortoises Charles Darwin, a British scientist, examined indigenous flora and animals when visiting the Galapagos Islands in 1835.
He got attracted by species that appeared to be similar to those found on the mainland yet had many morphological differences that were unique to distinct islands.
The core concept of biological evolution is that organism populations and species change through time. When we think of evolution today, we are more likely to associate it with one person: the British biologist Charles Darwin.
Darwin observed that the characteristics of numerous animals, such as tortoise shell forms, changed from island to island in the Galápagos Islands. - He discovered that various, yet related, animal and plant species occupied distinct habitats within a small space.
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What is the net charge of an ion that has 9 protons 11 neutrons and 11 electrons
2-
Explanation:Net charge describes the overall negative or positive charge of an atom or compound. Also, note that it is common in chemistry to write the sign of the charge after the number. Nevertheless, the charges +1 and 1+ are completely the same.
Calculating Charge
To find the charge of an atom you should look at the number of protons and electrons. Since neutrons have a neutral charge, aka no charge, they do not factor into net charge. On the other hand, protons have a positive charge and electrons have a negative charge. Each proton has a 1+ charge and each electron has a 1- charge.
To find the net charge find the total charge of the electrons and the total charge of protons, then add them together. Since there are 9 protons, the total proton charge is 9+. There are 11 electrons, so the total electron charge is 11-. For the purposes of doing the math, we can move the sign to the front.
(+9) + (-11) = -2Thus, the net charge is 2-.
Anions and Cations
To work with ions it is important to understand the vocabulary surrounding ions. Firstly, negative ions, like the one described in the question, are called anions. You can remember this as "A Negative ION". Also, positive ions, ions with positive net charges, are called cations. You can remember that the "t" looks like a plus sign.
For six months of each year, Earth travels toward the star Polaris. For six months each year, Earth travels away from Polaris.
Question
Which describes how wavelengths of light from Polaris would be observed from Earth when Earth is moving ,begin emphasis,away,end emphasis, from Polaris?
Answer options with 4 options
A.
They would be red shifted.
B.
They would be blue shifted.
C.
They would be green shifted.
D.
They would be yellow shifted.
"They would be blue shifted." describes wavelengths of light from Polaris would be observed from Earth when Earth is moving ,begin emphasis, away, end emphasis, from Polaris.
What is wavelength?The distance between identical points (adjacent crests) in adjacent cycles of a waveform signal carried in space or down a wire is defined as the wavelength. This length is often defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm). The distance between two successive crests or troughs of a wave is defined as its wavelength. It is measured in the wave's direction. The Greek letter lambda () is widely used to represent wavelength. The word wavelength is also applied to modulated waves, as well as their sinusoidal envelopes or waves created by the interference of numerous sinusoids.
Here,
"They would be blue shifted." indicates how wavelengths of light from Polaris would be perceived from Earth as Earth moves away, away, away from Polaris.
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Clouds,
Ocean
2 River
Mountains
Which of these statements best describes the
purpose of the arrows in the diagram?
A. The arrows show how clouds form.
B. The arrows show how erosion occurs.
C. The arrows show the processes of the water
cycle.
D. The arrows show the movement of water to
the ocean.
Answer:
I cant see the diagram but the answer is most likely C
Explanation:
Replication and Transcription
How would DNA polymerase replicate the following DNA strands?
ACGTTACGGATCCT
How do biomedical engineers contribute to society?
biomedical engineers contribute to society as they help address the health challenges they all encounter.
To address health concerns that they all encounter, bioengineers collaborate with other healthcare professionals like doctors, nurses, surgeons, and technicians. Due to this, essential tools and gadgets including MRI machines, dialysis machines, diagnostic instruments, and ultrasound have been developed.
The integration of traditional engineering and health has greatly advanced in recent years. Thanks to advancements in technology, medicine, and resources, biomedical engineers can now work in a setting that fosters innovation more than ever before, enabling them to develop solutions for a wide range of health problems.
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Which of these would help reduce the amount of carbon dioxide produced from your answer from question 1
Adding a plant to the flask will help reduce the amount of carbon dioxide produced and is therefore denoted as option A.
What is Photosynthesis?This is referred to as the process in which green plants manufacture food in the presence of sunlight. Plants trap sunlight through the green pigment known as chlorophyll and the energy from the sun is then used to power the reaction.
Plants use compounds such as carbon dioxide and water to produce glucose and oxygen and the equation of reaction can be seen below:
6CO₂ + 6H₂O → C₆H₁₂O6 + 6O₂
This is therefore the reason why to reduce the amount of carbon dioxide then it is best to add plants to the flask so that they are used up for their photosynthetic activities hence option A is the correct choice in this scenario.
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The options are:
A) add a plant to the flask B) Add a goldfish to the flask C) Remove a plant from the flask D) Don morning as the carbon dioxide will naturally become diluted
if the papilla of a hair follicle is destroyed
a. the hair produced by the follicle will change from terminal to vellus
b. the color of the hair will become lighter
c. the texture of the hair will become coarser.
d. the follicle will lose its blood supply.
e. hair production will not be affected
The hair matrix will lose its blood supply if the papilla of a hair follicle is destroyed.
Hence, Option D is correct
Specialized mesenchymal cells called hair dermal papilla cells are found in the dermal papilla at the base of hair follicles. These cells are essential for the growth, cyclization, and production of hair. The growth of hair follicles depends on the dermal papilla, which is also crucial for controlling the hair growth cycle. The dermal papilla, which houses the blood supply for the hair, is located at the base of the hair follicle/hair bulb. Just above the dermal papilla and separated from it by a basement membrane is the hair matrix, which houses the proliferating cells responsible for producing the hair as well as the internal root sheath.To know more about papilla here
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Circle the chromosomal abnormality shown on this karyotype.
Karyotypes can provide information about chromosomal abnormalities such as non-disjunction. The exposed karyotype belongs to a person who suffers from Turner syndrome, in which one of the X chromosomes is missing.
What is non-disjunction?
Non-disjunction is the proper separation failure of chromosomes during anaphase I or II of the meiotic division.
This mistake in segregation results in the production of abnormal gametes containing a greater or lesser number of chromosomes than is found in a normal cell. Consequently, the individual may develop a trisomy or monosomy.
Non-disjunction is a cause of various abnormal medical conditions, including Down syndrome and Turner syndrome.
The Turner syndrome is the monosomy in the X-chromosome (X-1).
The exposed karyotype belongs to a person with the Turner syndrome. We can see only one X chromosome, while the other one is missing.
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What are the advantages of predators?
Predators have certain advantages over the prey as the prey are vulnerable and get hunted and also the predators perform the function of regulating prey population.
Prey are those animals which get hunted by the predators and predators are the animals which kill or prey on other animals and obtain their nutrition from them.
Predators form a very crucial part of any particular ecosystem and have many advantages over a prey as the animal which is the prey is vulnerable and is hunted down by the predator. Due to this predator-prey relationship, predators keep the population of the prey species in check and they also help eliminate the sick as well as old animals which are a part of the prey species. They also help ensure the transfer of energy from one trophic level to the next trophic level and also by feeding on these animals they also reduce the amount of waste in the environment.
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Help please! which of the following describes the way in which a plant, such as an oak tree, obtains and uses energy?
A. It absorbs glucose sugar through the roots and breaks it down into atp during cellular respiration
B. it produces glucose sugar through cellular respiration and breaks it down through photosynthesis to produce atp
C. it produces glucose sugar through photosynthesis and breaks it down through cellular respiration to produce atp
D. it absorbs energy from sunlight and directly converts the energy into atp through photosynthesis
The answer is D
It takes the rays from the sunlight and turns them into ATP.
Answer:
The answer is D
It takes the rays from the sunlight and turns them into ATP.
Put an x over the part of the chemical reaction where photosynthesis would be affected if the following condition occurred. Then put a circle over the product(s) that would be the most affected.
The X (cross) over the light in the chemical reaction which affect the photosynthesis since it is light-dependent reaction. The circle over the product O2 would be the most affected.
What is reason behind the chemical reaction and its product in light dependent reactions?This is where light energy is converted into chemical energy in the form of ATP and NADPH. The product(s) that would be the most affected would be glucose (C6H12O6) as it is the only product formed directly from the light-dependent reactions. If the light were not present, glucose would not be produced and photosynthesis would not occur.
How does photosynthesis work?Green plants perform a process called photosynthesis to produce their own food by converting solar energy into chemical energy with the help of a green pigment called chlorophyll that is present in their chloroplasts.
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Put an x (cross) over the part of the chemical reaction where photosynthesis would be affected if the following condition occurred. Then put a circle over the product(s) that would be the most affected.
Light + 6CO2 + 6H2O => C6H12O6 + 6O2
What are Mendel's 7 traits?
Answer:
Pea shape - round or wrinkled
pea colour - green or yellow
pod shape - constricted or inflated
pod colour - green or yellow
flower colour - purple or white
plant size - tall or short
Natural selection is a process by which organisms that are better adapted to their environment tend toA-increase in sizeB-migrateC-evolve new traitsD-survive
Natural selection is a process by which organisms that are better adapted to their environment tend to evolve new traits.
In general ,Natural selection is considered as the process through which organisms develop variation in traits, which make them more fit to survive in changing environment survival. Thus , Natural selection primely depends on the environments. Natural selection doesn't depend on the traits that are genetically superior natural trait but they acts on existing heritable variation . These Heritable variation comes from random mutations.
Hence , we can say that Development of genetically modified organisms is of artificial selection but natural selection come over years of adaptation.
Hence, C is the correct option
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what do the data suggest about how related Turtles are to humans compared to tuna and chimpanzees
The data suggest that Turtles are less evolutionary related to humans when compared to chimpanzees and closer compared to tunes since amino acid differences account for the term divergence between species.
What does the term divergence between species mean in evolution?The term divergence between species in evolution makes reference to the difference between species in a given homolog protein sequence and or any other feature derived from a common ancestor. In this case, we can see that the aminoacid differences are higher between humans and tunas, thereby these species are evolutionary distant when compared to chimpanzees and also compared to humans and turtles (mammals and reptiles are evolutionary closer compared to tunas).
Therefore, with this data, we can see that the term divergence between species is based on the presence of homologies between individuals due to a common ancestor such as occurring between species.
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In cats, black fur color is caused by an X-linked allele, while the other allele at this locus causes orange color. The heterozygous allele is tortoiseshell. Normally, only females have the tortoiseshell phenotype because
A. a male inherits only one allele of the X-linked gene for hair color
B. multiple crossovers on the Y chromosome prevent orange pigment production
C. only males can have Barr bodies
D. genetic imprinting prevents males from inheriting tortoiseshell traits from a mother
Normally, only females have the tortoiseshell phenotype because a male inherits only one allele of the X-linked gene for hair color, hence option A is correct.
Why do females have the tortoiseshell phenotype?The males perish during embryonic development, only female cats often exhibit the tortoiseshell phenotype. The X-linked gene governing hair color can only be inherited by males as one allele.
This is so because male cats only have one X and one Y chromosome, whereas two X chromosomes are required to generate the distinctive tortoiseshell coloration of black, orange, and yellow/gold.
Therefore, option A is correct.
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Question 4
What happens when warm water rises in the ocean?
OA Ocean levels drop near the poles.
B. Cool water flows in to take its place.
C. Temperatures near the equator rise.
D. Warm air sinks to meet.
Turn In
13
17
Answer:
B. Cool water flows in to take its place
Explanation:
You want to know what happens when warm water rises in the ocean.
CurrentsIn any fluid, currents will arise from differences in fluid density. When fluid moves out of a space, other fluid flows into that space to fill the void.
Ocean currentsIn general, ocean currents arise from differences in temperature and salinity. Warmer and less saline (fresh) water have less density than colder or more saline water. As a consequence of its reduced density, warmer (or less saline) water will experience pressure moving it upward. It is replaced by water of lower temperature or greater salinity.
When warm water rises, cool water flows in to take its place.
This type of irrigation uses a large system of sprinklers that must be manually moved from field to field and has very large evaporative losses.
answer choices
Drip Irrigation
Flood irrigation
Furrow irrigation
Spray irrigation
Irrigation that uses a large sprinkler system and is moved manually and experiences very large evaporation losses are called drip Irrigation
What is irrigation?Irrigation or watering is an effort made by humans to irrigate agricultural land. In the modern world, there are currently many models of irrigation that can be done by humans.
One of them is drip irrigation. Drip irrigation is a way of giving water to plants directly on the soil surface. This type of irrigation uses a tool called an emitter or dropper and is moved manually. This tool is used to spread water throughout the soil profile, both horizontally and vertically as a result of gravity and capillarity.
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What is the last phase of the Calvin cycle called?
The last phase of the Calvin cycle is called the "regeneration phase" or the "reductive phase."
The Calvin cycle, also known as the carbon fixation cycle or the dark reaction of photosynthesis, is the process by which plants use energy from sunlight to convert carbon dioxide (CO2) into glucose and other sugars. The cycle is named after Melvin Calvin, who was awarded the Nobel Prize in Chemistry in 1961 for his work on the cycle.
The last phase is called the "regeneration phase" or the "reductive phase" wherein the Calvin cycle regenerates the CO2 acceptor (RuBP) using the products of the previous stages, CO2 and NADPH, so that the cycle can continue. This phase is also when the CO2 is fixed and the cycle produces G3P, a 3-carbon molecule which can be used to make glucose or other sugars by plants.
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Describe the sex and characteristics of the person labeled a
Answer: Person a is a female with attached earlobes.
Explanation: i dont have an explanation
Which type of nutrients provide valuable energy for muscles?
Answer:
carbs
Explanation:
Carbohydrates – or carbs – are the body's primary fuel. They provide energy for your muscles and the central nervous system during movement and exercise. Wohlford says 45-65% of calories per day should come from carbohydrates.
What is photosynthesis? And what is cellular respiration?
(Provide definitions and examples for both)
How are the processes of photosynthesis and cellular respiration connected? Explain how plants and animals mutually benefit each other using these processes.
Answer:
Please read below:
Explanation:
Photosynthesis is the process by which plants, algae, and some bacteria capture energy from sunlight and use it to produce food (sugars) from carbon dioxide and water. During photosynthesis, oxygen is also released as a by-product. Examples of photosynthetic organisms include plants, algae, and some bacteria.
Cellular respiration is the process by which cells break down food molecules to produce energy, which is then used to power the cell's activities. It involves the conversion of the chemical energy stored in carbohydrates, fats, and proteins into a form of energy that can be used for cellular activities. Examples of cellular respiration include glycolysis and the Krebs cycle.
Photosynthesis and cellular respiration are connected in that they are part of a cycle of energy exchange between plants and animals. During photosynthesis, plants use energy from the sun to convert carbon dioxide and water into oxygen and glucose.
During cellular respiration, animals use oxygen and glucose to produce energy and carbon dioxide. Plants and animals benefit each other in that plants use the carbon dioxide produced by animals to perform photosynthesis, and animals use the oxygen produced by plants for respiration. In this way, plants and animals form a mutually beneficial cycle of energy exchange.
9. Following a a SSYyx SsYy cross what fraction of the offspring are predicted to have a genotype that is
beterozygous for both characteristics?
Answer:There are 4 out of 16 possible combinations of gametes from an SsYy x SsYy cross with the genotype of SsYy. We would therefore predict that 4/16 (or 1/4) of the offspring of the cross would be homozygous for both traits. Note that there is a different phenotype for each of the 4 different combinations of alleles.
Producers are organisms that obtain their energy from sunlight. Consumers obtain their energy from eating food. This food may be producers, other consumers, or both. Decomposers obtain their energy from the breakdown of decaying matter. Students are asked to make a table classifying four organisms as producer, consumer, or decomposer. Which student filled out the table correctly?.
Organisms known as producers get their energy from sunshine. Food is how consumers get their energy. producers, consumers, or both, of this cuisine. Energy is produced by decomposers as a result of the breakdown of decaying matter.
How do producers use the energy that sunlight provides?How do producers manage to magically turn sunshine energy into molecules that other species can utilise? They achieve this feat by using a biological process known as photosynthesis. Sunlight energy is used in this process to break water molecules into hydrogen and oxygen.
How is the energy that sunshine gives for producers used?How do manufacturers suddenly transform solar energy into molecules that other organisms can use? They use the biological process of photosynthesis to accomplish this accomplishment. In this procedure, sunlight energy is used to split water molecules into hydrogen and oxygen.
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If you had an unknown solution X that had a pH of 7.3 and then added and mixed 10 mL of an acid solution with a pH of 4. You then tested for a new pH and it was still 7.3, what would you classify solution X as?
Buffer
A strong base
Heterogeneous mixture
Enzyme
Solution X would be classified as a buffer. Option 1.
What is a buffer?A buffer solution is a solution whose pH does not change significantly with the addition of either a small amount of an acid or a base. The buffer solution in itself contains an aqueous solution of acid or base with a mixture of its conjugate base or acid respectively.
Due to the composition, the pHs of buffer solutions do not change a great deal with the addition of a small quantity of acid or a small quantity of base.
Thus, if 10 mL of an acid solution is added to an unknown solution X whose pH is 7.3 and the pH of solution X remains unchanged from 7.3, then solution X would be a buffer solution.
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How many valence electrons are transferred from the nitrogen atom to potassium in potassium nitride.
In the formation of potassium nitride, zero valence electrons are transferred from nitrogen to potassium.
A valence electron is an electron in the outer shell of an atom that can participate in the formation of a chemical bond if the outer shell is not closed. A shared pair forms in a single covalent bond, with each atom contributing one valence electron.
From potassium to nitrogen, electrons are transferred.
The outermost cells contain valence electrons, which are capable of forming chemical bonds.
The formula is:
6K + N₂ ⇒ 2K₃N
K = K⁺ + e⁻
NO₃ + e⁻ = NO³⁻
Potassium transports electrons to nitrogen.
As a result, nitrogen transfers no electrons (zero) to potassium.
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A scientist determines that the following mutation has likely occurred in a fruit fly's DNA to change the shape of the wing.
The scientist claims that using gel electrophoresis will allow them to detect which DNA strand has the mutation and which does not.
Why will this work?
The DNA has different lengths, and gel electrophoresis will separate the strands by length showing the mutated gene is shorter than the original gene.
The strands have the same amount of thymine in them, so this technology cannot be used to compare the two genes.
The strands have the same amount of guanine in them, so this technology cannot be used to compare the two genes.
The DNA has different base pairs, and gel electrophoresis will separate the strands by comparing the base pairs, showing the mutated gene has one less A-T base pair.
According to size, the molecules that enter the gel will separate. Because they do not need to squeeze through the gel's pores as much as the larger ones do, the smaller ones will travel further down the gel.
What is electrophoresis explain?A laboratory procedure called electrophoresis is used to divide DNA, RNA, or protein molecules according to their size and electrical charge. Colloidal particles migrate during electrophoresis under the influence of an applied electric field. In cataphoresis, negatively charged particles move away from the anode while positively charged particles move closer to it (anaphoresis). Colloid particle charges can be determined via electrophoresis.
What is the basic principle of electrophoresis?The phenomenon that most biomolecules exist as electrically charged particles with ionizable functional groups serves as the foundation for electrophoresis. At a specific pH, biomolecules can exist as either positively or negatively charged ions in a solution. The technology of electrophoresis is crucial for the separation and examination of nucleic acids. At the lab bench, cloned DNA fragments are frequently isolated and worked with using nucleic acid electrophoresis.
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