Answer:
The two paths of blood circulation are the pulmonary circulatory system and the systemic circulatory system.
Explanation:
Answer:
According to study.com and slader.com
Explanation:
The two paths of blood circulation are the pulmonary circulatory system and the systemic circulatory system. In the pulmonary circulatory system, the blood from the heart is pumped to the lungs for oxygenation, then pumped back into the heart.
What is the function of heart valves?
Answer:
They ensure blood flows in one direction throughout the heart
Explanation:
The heart has 4 valves namely;
The mitral and tricuspid valves which control the flow of blood from the atria to the ventriclesThe pulmonary and aortic valves which control the flow of blood out of the ventricles.When blood passes through the valve, the valve prevents the back flow of the blood as the muscles of the heart contracts and relaxes.
Answer:
I believe it is
They prevent blood from flowing backwards
The primary colors are_.
A.red, green, purple
B.yellow, blue, green
C.yellow, blue, red
D.blue, orange, red
Answer:
yellow, blue, and red are the primay colours
Answer:
The answer is C.) yellow, blue,red.
Explanation:
Over the past two hundred years, cities around the world have grown. The rapid population increase and industrialization of urban areas have, in turn, had a great impact on the local environments.
Urban governments have been concerned with all BUT one of the following environmental problems. That is
A) contaminated run-off.
B) reduced precipitation.
C) insufficient garbage collection.
D) air pollution from factories and vehicles.
The answer is B: reduced precipitation
Answer:
The answer is B. reduced precipitation
Explanation:
Urban governments have been concerned with all of the listed environmental problems except reduced precipitation. At this time, drought is a world-wide concern.
What climate condition occurs during El Niño?
During El Niño, there are warmer sea surface temperatures in the Pacific Ocean, resulting in altered weather patterns globally. It can cause both heavy rainfall and flooding in some areas, and drought conditions in others. For instance, it can lead to an increase in the population of deer mice in the southwestern United States.
Explanation:The climate condition that occurs during El Niño is characterized by warmer-than-average sea surface temperatures in the central and eastern tropical Pacific Ocean. This leads to changes in ocean currents and atmospheric circulation, resulting in altered weather patterns around the world.
During El Niño, the normally dry western coast of South America experiences increased rainfall, while regions such as Southeast Asia and Australia may experience drought conditions. The impacts of El Niño can include heavy rainfall, flooding, and storms in some areas, while other regions may experience dry conditions and decreased rainfall.
For example, during El Niño, the southwestern United States may experience increased rainfall, leading to ecological changes such as an uptick in the population of deer mice, which can carry diseases like Sin Nombre (hantavirus).
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El Niño is a climate condition characterized by the warming of ocean surface temperatures and weakening of trade winds. It affects rainfall patterns, temperature, and can lead to flooding, droughts, and changes in tropical cyclones. El Niño disrupts normal climate patterns and has worldwide impacts on weather.
Explanation:El Niño is a climate condition that occurs in the equatorial Pacific Ocean. It is characterized by the warming of the ocean surface temperatures and the weakening of the trade winds. During El Niño, there are several climate effects that can be observed worldwide, including changes in rainfall patterns and temperature.
In the Americas, El Niño brings wetter conditions to the western coast of South America, leading to heavy rainfall and flooding in some areas. It also leads to drier conditions in parts of Southeast Asia and Australia, causing droughts and wildfires. El Niño can also affect the strength and frequency of tropical cyclones in the Pacific and Atlantic Oceans.
Overall, El Niño disrupts the normal climate patterns and can have significant impacts on weather conditions around the world.
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A geologist concludes that a rock sample is an extrusive igneous rock. Based on this information, which statement about the rock is accurate?
A. The rock formed from cooling lava. B. The rock cooled slowly over millions of years. C. The rock likely came from a pluton. D. The rock formed within Earth's crust.
A. The rock formed from cooling lava
Hope this helps chu
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Answer:
the accurate answer to this question is the rock is forming by lava
hope this helps
Explanation:
Which best describes the main sources of energy in the United States?
A. Wind, nuclear,natural gas
B. Solar, wind, hydroelectric
C. Geothermal,biomass,solar
D. Coal,oil,natural gas
Answer:
D
Explanation:
Most of the energy in the United States comes from the burning of fossil fuels (coal, oil, natural gas). Hope this helps!
Answer:
D. Coal,oil,natural gas
Explanation:
The main sources of energy in USA are non renewable sources of energy like coal, oil and natural gas. Oil is the main source of energy in USA while coal stands second as a source of energy. Apart from these two, natural gas is also widely used in USA as an energy source. Non renewable sources of energy are also known as conventional sources of energy. Alternate sources of energy which are also known as renewable sources of energy like wind, solar hydroelectric, geothermal energy etc. are not used commonly as main sources of energy in USA.
A dog gets into a fight with another dog and suffers bite wounds on its stomach and near its left front leg. Which terms would a veterinarian use to describe this injury?
A.
bite wounds on ventral and left, posterior areas
B.
bite wounds on dorsal and left, anterior areas
C.
bite wounds on ventral and left, anterior areas
D.
bite wounds on dorsal and left, posterior areas
E.
bite wounds on ventral and right, anterior areas
C. bite wound son ventral and left, anterior areas
Ventral = underside/stomach
Left = left side
Anterior = nearer the front
C. Bite wounds on ventral and left, anterior areas
Ventral would be the stomach, or in other words in the abdominal area.
Left would be the left side of the body.
Anterior would be the area located close to the head.
I hope this helps! :)
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People have slowly realized the importance of managing and maintaining ecosystems. Match the environmental issues with their most appropriate solutions.
an increase in air pollution
a decrease in the number of trees
the loss of a bird habitat
an endangered aquatic species
provide nesting boxes
encourage the use of public transport
regulate recreational activities such as boating and fishing
plant new trees and protect existing trees
Answer: A decrease in a number of trees—plant new ones and protect existing trees
The loss of a bird habitat—provide nesting boxes
An endangered aquatic species— regulate recreational activities such as boating and fishing
A increase in air pollution— encourage public transportation
I hope this helps!
Answer: 1.An increase in air pollution. : Encourage the use of public transport.
2. A decrease in the number of trees.: Plant new trees and protect existing trees.
3. The loss of a bird habitat.: Providing nesting boxes.
4. An endangered aquatic species.: Regulate recreational activities such as boating and fishing.
Explanation:
1. The air pollution increases due to the discharge of partially combusted gases released from vehicles like carbon dioxide, carbon monoxide and others. These gases pollute the air. Thus, the use of vehicles should be minimized. Thus people should use public transport to reduce pollution.
2. The trees may reduce in number due to clear cutting, deforestation and because of other reasons. The population of trees in a region can be restored by growing plants.
3. The decrease in bird population may be because of habitat loss, pollution and climatic changes. The population of birds can be restored by providing them with boxes to stay as nest.
4. An endangered species is one which is left with limited population. An endangered aquatic species population can be managed by regulating the recreational activities as human beings may directly or indirectly affect them by throwing garbage to water bodies, oil spill and by other ways.
In plants and animals, carbon cycles through molecular processes that store and release energy in various molecular forms. In these plant and animal molecular processes, carbon is found in
sugar molecules and oxygen molecules.
sugar molecules and water molecules.
carbon dioxide and sugar molecules.
carbon dioxide and oxygen molecules.
Answer:
carbon dioxide and sugar molecules.
Explanation:
The carbon is found in carbon dioxide whose composition is CO2 (one atom of carbon per two of oxygen) and in the sugar that is a primordial element, composed of carbon, oxygen and hydrogen.
Carbon is found in carbon dioxide and sugar molecules in both plants and animals.
Explanation:In the process of photosynthesis, plants convert carbon dioxide gas (CO₂) into sugar molecules such as glucose (C6H12O6), and release oxygen as a byproduct. On the other hand, during respiration, animals consume glucose and oxygen, producing carbon dioxide and water as waste products. Therefore, carbon is found in carbon dioxide and sugar molecules in both plants and animals.
under what conditions will a substance be likely to enter a cell through diffusion
Answer:
Under hypotonic conditions.
Explanation:
If the extracellular fluid has lower osmolarity than the fluid inside the cell, it’s said to be hypotonic—hypo means less than—to the cell, and the net flow of water will be into the cell.
A substance can enter a cell through diffusion if there is a concentration gradient, the substance can pass through the cell membrane, and if necessary, specific protein channels are available in the cell membrane. Diffusion is a passive form of transport that does not require energy from the cell. External conditions like solvent density and system temperature can also affect the rate of diffusion.
Explanation:
A substance is likely to enter a cell through diffusion under certain conditions, including the existence of a concentration gradient, the ability of the substance to pass through the cell membrane, and the presence of specific protein channels in the membrane. Diffusion moves a substance from an area of higher concentration to an area of lower concentration until the concentration is equal across the space. This is a form of passive transport, meaning it doesn't require any energy from the cell.
For example, in an organism, gases, lipids, and water pass through the cell membrane easily, often using protein channels known as aquaporins for water. But polar molecules like glucose, amino acids, and ions may not easily pass through. These molecules often rely on facilitated transport, moving down a concentration gradient through set protein channels in the membrane, which does not require energy.
Other factors can also affect the rate of diffusion, including solvent density and system temperature. A denser medium or lower temperatures can slow the rate of diffusion, while a less dense medium or higher temperatures speed it up. So, the conditions in which the cell exists also play an integral role in whether a substance can enter a cell through diffusion.
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Please help ASP! Look at the picture above!
Answer:
A
Explanation:
It kinda tells you in the question by talking about salt in water.
A saltwater fish controls the concentration of salt in its body by actively excreting salt across its gills, drinking, and producing very small amounts of concentrated urine. Hence the correct option is b.
A saltwater fish is classified as an osmoregulator because it actively regulates the concentration of salt in its body to maintain internal balance in a saltwater environment. The fish achieves this by excreting excess salt through specialized cells in its gills, actively drinking water to compensate for osmotic water loss, and producing minimal, highly concentrated urine to conserve water.
In a saltwater environment, where the external concentration of salts is higher than that inside the fish's body, it faces the challenge of preventing dehydration due to water loss and maintaining a suitable internal salt balance. The osmoregulatory mechanisms employed by saltwater fish are crucial for their survival and adaptation to their specific aquatic habitats. Hence the correct option is b.
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what is the backbone of the dna structure composed of?
Answer:
Each DNA strand within the double helix is a long, linear molecule made of smaller units called nucleotides that form a chain. The chemical backbones of the double helix are made up of sugar and phosphate molecules that are connected by chemical bonds, known as sugar-phosphate backbones.
Explanation:plz mark me as brainliest
How does aging affect the nervous system?
Answer:neurons die at an increased rate
Explanation:
Did in Health science
While aging brings these changes to the nervous system, it's important to note that the extent and rate of these changes can vary among individuals. Staying mentally and physically active, maintaining a healthy lifestyle, and managing underlying health conditions .
Neuronal Loss: With age, there is a gradual loss of neurons (brain cells), particularly in regions like the hippocampus and prefrontal cortex, which are important for memory and cognitive functions. This neuronal loss can contribute to cognitive decline.
Slower Processing: Aging often leads to a reduction in the speed of information processing, which can result in slower reaction times and difficulty with tasks that require quick thinking and decision-making.
Reduced Neurotransmitter Levels: There is a decline in the levels of certain neurotransmitters, such as dopamine and serotonin, which can affect mood, motivation, and emotional regulation. This can be associated with an increased risk of mood disorders like depression.
Changes in Brain Structure: The brain undergoes structural changes with age, including shrinking in volume and changes in the distribution of white and gray matter. These structural changes can impact cognitive function and memory.
Decreased Plasticity: Neuroplasticity, the brain's ability to adapt and learn, decreases with age. This can make it more challenging to acquire new skills or adapt to new situations.
Impaired Sensory Functions: Aging often leads to diminished sensory functions, such as reduced vision and hearing, which can impact perception and communication.
Increased Risk of Neurological Conditions: The risk of neurological conditions like Alzheimer's disease and Parkinson's disease increases with age. These conditions can have profound effects on cognitive and motor functions.
Decline in Motor Function: The nervous system's control over motor functions can be affected by aging, resulting in decreased coordination and balance.
Vascular Changes: Aging can lead to changes in blood vessels, including reduced blood flow to the brain. This can contribute to cognitive impairment and an increased risk of strokes.
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What factor maintains the same distance between strands in a DNA molecule?
A. pairing of double-ringed bases with triple-ringed bases
B. pairing of single-ringed bases with double-ringed bases
C. pairing of double-ringed bases with double-ringed bases
D. pairing of single-ringed bases with single-ringed bases
pairing of single-ringed bases with double-ringed bases
Answer:B
Answer:
b
Explanation:
_____ is all the individuals of a species that live together in an area.
Community
Population
Ecosystem
Ecosystem is the correct answer
Which of the following controls the activities of a cell? A. nucleus B. vacuole C. cytoplasm D. cell membrane
A. Nucleus controls the activities of a cell.
As the main command center where genetic material, or DNA, is kept, the nucleus regulates the functions of a cell. The instructions needed to synthesize proteins and control biological functions are encoded in DNA. The nucleus regulates the expression of genes, which affects growth, metabolism, and division, among other cellular processes.
Through the transcription and translation of genetic information into proteins, which perform the required functions within the cell, it synchronizes these actions. Therefore, the nucleus is essential to preserving the integrity and general function of the cell.
During respiration, what do consumers such as animals release?
water
oxygen
carbon dioxide
food
Answer:
Carbondioxide and water
Explanation:
During respiration food molecules are broken down to release energy. During this process oxygen is required and not formed but Carbondioxide and water is liberated as byproduct. So the closest answers are Carbondioxide and water
During respiration, consumers such as animals release the carbon dioxide gas into atmosphere. Thus, the correct option is C.
What is Respiration?Respiration can be defined as a metabolic process wherein, the different living cells of an organism can obtain energy in the form of ATP(Adenosine triphosphate) by taking in the oxygen gas and liberating carbon dioxide gas from the oxidation of complex organic substances into the atmosphere.
Carbon dioxide is the main gas or the by-product which is released back into the atmosphere during the respiration of consumers, which then breaks down to glucose molecule and other complex organic compounds and gets converted into the carbon back to carbon dioxide for reuse by the producers.
Therefore, the correct option is C.
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fuel that is formed from burning recently living, organic products is
Answer:
Biomass fuel
Explanation:
Here is where i found my information. https://quizlet.com/76893830/other-organic-fuels-flash-cards/
Answer:
biomass fuel! it s correct!
Explanation:
Which amino acid sequence corresponds with the polypeptide strand AUG CCG UAC GAG UAA? Do not include the start and stop codons.
A)
arginine serine glycine
B)
proline phenylalanine aspartic
C)
proline tyrosine glutamic acid
D)
arginine tyrosine glutamic acid
Answer:
THE ANSWER IS C i just did it on usa test prep
Explanation:
What type of relationship do humans and honeyguides have? Explain your response.
The bird leads the humans to the honey and both species come out of the deal happier than when they went in. In biological terms, this is mutualism. Though humans get something out of it, we are undoubtedly being exploited in the process.
A hiker is climbing up a steep path. Halfway up, he finds the muscles in his legs are experiencing a burning and aching sensation. What is the most likely cause of these symptoms?
Answer:
he has a large buildup of lactate in his muscles.
Explanation:
A hiker is climbing up a steep path. Halfway up, he finds the muscles in his legs are experiencing a burning and aching sensation. The reason could be lactic acid deposition.
What is lactic acid deposition ?The accumulation of lactic acid in the certain area where pyruvate is getting converted into lactate.
This is the form of anaerobic respiration where the absence of oxygen made the anaerobic processes accumulate the lactate in the muscles.
The process is taking place because of the absence of oxygen. Glucose instead of breaking down getting accumulated as lactate in muscles and this process is called as cramps in the normal language.
The sudden regression of such activities is absence of exercises at first but later on rapid exhaustion over the body parts and leading to the condition called lactic deposition in muscles in the form of lactate.
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In past decades, the Grizzly Bears in Yellowstone National Park were hunted nearly to extinction. Some people just wanted a trophy to brag about, while others were trying to protect their livestock from the large carnivore. What is the most effective way to protect wildlife whose population numbers are becoming concerningly low?
Answer:
The first answer is most logical, since it is possible.
Explanation:
Which best describes ideal growing conditions for fungi?
A. moist and warm
B. hot and dry
C. cool and damp
D. wet and cold
Answer:
A: most and warm
Explanation:
Answer:the answer would be moist and warm because the fungi would react with water and the right temperature would greatly help in growth
E
Conservation methods are needed worldwide for many reasons. All but one is a reason to support conservation.
A) global population growth
B) global capacity to provide sufficient food
C) geographical mismatch between food demand and supply
D) undiscovered lands will provide plenty of natural resources
Undiscovered lands will provide plenty natural resources
Answer:
D) undiscovered lands will provide plenty of natural resources
Explanation:
Before the end of the Second World War, there were no studies published in a massive way in order to point out the need to conserve nature for new and future generations. This represented a paradigm of the economy that observed ecology in a profound way, with higher values to human beings than to forests. At the time, the concept of the main economy consisted of the fact that natural resources are not scarce, starting from this concept began to establish conservation methods to preserve mineral resources.
Conservation methods are needed worldwide for several reasons. The factors that highlight the need to support these conservation methods are:
global population growth global capacity to provide sufficient food geographical mismatch between food demand and supplyHow do gymnosperms look different than angiosperms
The key difference between angiosperms and gymnosperms is how their seeds are developed. The seeds of angiosperms develop in the ovaries of flowers and are surrounded by a protective fruit. ... Gymnosperms seeds are usually formed in unisexual cones, known as strobili, and the plants lack fruits and flowers
A region in China has steppes with very few trees. It receives a little more rain than arid desert climates receive. This region
also has contrasting seasons with cold and hot temperatures. It is home to many grazing animals, such as deer.
Which factors define this area as a semiarid climate? Check all that apply.
a)receives little rain
b)is located in China
c)has steppes with few trees
d)has grazing animals, such as deer
e)has hot and cold temperatures
Answer:
I would say A
Answer:
A. receives little rain, has steppes with few trees, has hot and cold temperatures
Explanation:
I did the quiz and got it right it is also on quizlet.
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Which of the following adaptations in wooly mammoths would have best prevented their extinction?
A. Shedding of fur
B. Darker colour of fur
C. Growth of an extra layer of fur
D. Increase in thickness of fur
Answer:
I think it is D
Explanation:
Answer: A shedding of fur
Explanation:
In sickle-cell disease, variation in one gene causes red blood cells to bend, or sickle. This means the sickled cells _____.
A)are better at destroying the malaria parasite
B)carry toxic levels of oxygen through the body
C)cannot carry normal levels of oxygen to cells
D)attract larger numbers of the malaria parasite
Answer:
C. cannot carry normal levels of oxygen to the cells
Sickled red blood cells, characteristic of sickle-cell disease, cannot carry normal levels of oxygen to other cells in the body due to their abnormal shape causing them to get stuck in small blood vessels.
Explanation:In sickle-cell disease, the mutation in the hemoglobin gene changes the shape of red blood cells. These cells are no longer round but sickle-shaped, hence the disease name. The right answer to your question is option C: sickled cells cannot carry normal levels of oxygen to cells.
This is because the abnormal shape of these red blood cells makes them rigid and sticky, which can cause them to get stuck in small blood vessels and block blood flow and oxygen to parts of the body. As a result, they can't deliver the usual amount of oxygen which other body cells need to function properly.
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Which kingdoms include organisms with cell walls?
I. Archaebacteria
II. Fungi
III. Plantae
IV. Animalia
V. Protista
VI. Eubacteria
Answer:
Archaebacteria, Eubacteria, Plantae, Fungi, and Protista.
Explanation:
Eubacteria has cell walls with peptidoglycan. Archaebacteria has cells walls without peptidoglycan. Protista has cells walls of cellulose in some. Fungi has cell walls of chitin. Plantae has cell walls of cellulose.
The kingdoms include organisms with cell walls are Archaebacteria, Fungi, Plantae, Protista, Eubacteria.
What are the Fungi?
The cell wall is a feature shape of fungi and consists specially of glucans, chitin and glycoproteins. As the additives of the fungal cell wall aren't found in humans, this shape is a brilliant goal for antifungal therapy.
The five-kingdom organisms of type for dwelling organisms, inclusive of the prokaryotic Monera and the eukaryotic Protista, Fungi, Plantae and Animalia is complex through the invention of archaebacteria.
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How are the tests and ovaries similar
Answer:
A. both stores mature sex cells.
Answer:
D.both produce sex cells. is a correct answer.
Explanation:
Testes and ovaries are similar because they both produce sex cells and both are reproductive organs.
Testes is a male reproductive organ.
Testes function is to produce sperm, called a male reproductive sex cell.
ovaries is a female reproductive organ.
ovariesOvaries function is to produce ovum, called a female reproductive sex cell.
Thus both testes and ovaries are similar as they both produce sex cells.