explain the flow of the blood in and out of the heart.
Answers
Answer:
The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
Related Questions
How is soil polluted?Explain.
Answers
Answer:
Main Causes of Soil Pollution
1. Industrial Activity. Industrial activity has been the biggest contributor to the problem in the last century, especially since the amount of mining and manufacturing has increased.
2. Agricultural Activities. The utilization of chemicals has gone up tremendously since technology provided us with modern pesticides and fertilizers.
3. Waste Disposal.
Explanation:
got the information from the internet
Select the correct answer.
The image shows EKGs of a person with normal heart waves and of a person having tachycardia. Based on this image, what kind of condition
is tachycardia?
Answers
The correct answer based on the question made in the picture is A. the heart beats abnormlly fast.
What kind of condition is tachycardia?Tachycardia is a heart condition in which the heart rate increases over 100 beats per minute. This occurs when cardiac impulses do not work properly and this in the long term can cause severe problems.
There are several types of tachycardia, It is not always a problem, sometimes It can be in response to exercise or stress.
In the types of tachycardia we can find: atrial fibrillation, ventricular tachycardia, atrial flutter, supraventricular tachycardia, ventricular fibrillation.
Therefore, we can confirm that the correct answer based on the question made in the picture is A. the heart beats abnormlly fast.
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Which statement about chromosomes is correct?
1.A gene is made up of one allele on a single chromosome. A person’s sex cells contain that single allele.
2.A gene is made up of two alleles on the same chromosome. A person’s sex cells contain one of the alleles.
3.A gene is made up of one allele spread over two chromosomes. A person’s sex cells contain that single allele.
4.A gene is made up of two alleles on separate chromosomes. A person’s sex cells carry one allele for each gene.
Answers
Answer:
4 option is correct
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Which of the following muscles does NOT originate on the scapula?
Answers
Answer:
d. Pectoralis major
Explanation: does NOT
Pieces of Earth's crust move on top of the: Group of answer choices outer core ocean inner core mantle
Answers
Answer:
mantle
Explanation:
A de-shelled egg is placed in tap water. The egg grows in size.
What is the best explanation for this change in size?
Water moved into the cell by osmosis because the solute concentration was higher inside the cell than outside the cell.
Water moved out of the cell by osmosis because the solute concentration was higher outside the cell than inside the cell.
Ions in the water moved into the cell through diffusion because there were more ions outside the cell than inside the cell.
Water moved into the cell by diffusion because there is more water inside the cell than outside the cell.
Answers
Answer:
Water moved into the cell by diffusion because there is more water inside the cell than outside the cell.
Explanation:
The de-shelled egg when placed in water swells because the concentration of water molecules outside the egg is much higher than the concentration of water molecules inside the egg, as a result of which endosmosis takes place and water from the beaker enters into the egg.
Put the following fossils into the correct order, from oldest to most recent, based on when evidence of their evolution first appears in the fossil record.
I. Humans
II. Trilobites
III. Winged insects
IV. Dinosaura
V. Bacteria
A. V, III, IV, II, I
B. II, V, IV, I, III
C. V, II, III, IV, I
D. I, II, V, II, IV
Answers
Answer:
the answer would be C.
Explanation:
V,II,III,IV,I
The correct option is C. V, II, III, IV, I
BacteriaTrilobitesWinged insectsDinosauraHumansWhat is fossils?Fossils exist the preserved remains of plants and animals whose bodies existed buried in sediments, such as fossil , under ancient seas, lakes, and rivers. Fossils even contain any preserved trace of life that exists typically more than 10 000 years old.
A fossil exists as any preserved stays impression or trace of any once-living thing from a past geological age. Examples contain bones, shells, exoskeletons, stone patterns of animals or microbes, objects maintained in amber, hair, petrified wood, oil, coal, and DNA remnants.
The correct option is C. V, II, III, IV, I
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what is the transfer of genes from one population to another called ?
Answers
Answer:
Gene flow
Explanation:
Answer:
Gene flow is the movement of genes into or out of a population. Such movement may be due to migration of individual organisms that reproduce in their new populations, or to the movement of gametes (e.g., as a consequence of pollen transfer among plants).
which activities of the body are controlled by the autonomic nervous system?
Answers
Explanation:
The autonomic nervous system controls internal body processes such as the following:
Blood pressure
Heart and breathing rates
Body temperature
Digestion
Metabolism (thus affecting body weight)
The balance of water and electrolytes (such as sodium and calcium)
The production of body fluids (saliva, sweat, and tears)
Urination
Defecation
Sexual response
Cell membranes:
What are all the main components of a cell membrane responsible for?
Please give a list of all their functions :))
Answers
Answer:
Nucleus
it is responsible for control all the function
When were the first pictures of the Milky Way taken?
Answers
Answer:
The first pictures of the Milky Way were taken on May 20, 1990.
Hope I helped! ☺
The subject of this first-ever cosmic screen grab was the binary star HD96755 in the open cluster NGC 3532, about 1,300 light years away. HD96755 is the vaguely snowman-shaped object at the top of the image; the smaller one, below it and to the right, was a stellar bystander that simply photo-bombed the image. NASA released the picture along with a second one, top left, taken of the same objects by a ground-based telescope in Chile’s Atacama Desert,
five impacts of human activity in natural resources
Answers
Hope it helps!
Which of the following is NOT a risk factor for multiple sclerosis?
Answers
Answer:
c is correct
Explanation:
Es responsable del pensamiento y de que conocemos como sentimientos
Answers
building units of DNA
HELP HEAVS
Answers
A 100% efficient light bulb is the one that converts all the electricity to light without producing any heat. which of that following methods is the most economical way of increasing the light output from a lamp ?
a) Replace the light with a new one
b) Clean the light surface
c) Switch of the bulb
d) None of the above
Answers
Answer:
d
Explanation:
Buying a new light bulb will cost money so it is economically inefficient. Cleaning the light surface doesn't increase the light output from the lamp and switching off the bulb means no light at all, therfore the answer is none of the above.
Which statement explains what happens as magma rises inside a volcano?
Gases will contract in the chamber.
The pressure of the gas will disappear.
The magmatic pressure decreases.
Magma moves to other chambers.
Answers
Answer: the answer is C which is “the magmatic pressure decreases“
The magma rises and collects in chambers within the crust and as magma fills the chamber, pressure grows. If the pressure gets high enough the magma can break through the crust and spew out in a volcanic eruption., but If the pressure is low, do not break the crust. Thus the correct option is C.
What is molten magma?Magma is a molten and semi-molten rock mixture present under the surface of the Earth.
This mixture is usually made up of four parts such as a hot liquid base, called the melt, minerals crystallized by the melt, solid rocks incorporated into the melt from the surrounding confines, and dissolved gases.
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A. Val Pro Pro
B. Leu His Ser
C. Pro Val Pro
D. Val Leu Pro
Answers
HELP PLZ ASAP true or false
1 then an organism is asymetrical it means that no matter where you slice it in half the two sides are always mirror imiges true or false?
2 The phylum cnidaria is charicterized by organisms that shoot barb cells contains a potint toxin true or false?
Answers
Answer:
1 false
2 true
Explanation:
Helpppp
A community needs more electrical energy. The community is located in an area with the following characteristics : Average wind speed of 15 to 20 mph . One small river with slow currents Rainy conditions most of the year No coal or oil deposits Based on this information, which alternative energy source should the community consider investing in?
A Biopower
B hydropower
C Solar energy
D Wind energy
I’ll make you Brianlist if you give me the correct answer.
Answers
What type of animal symmetry also includes the formation of a head? What is this process called?
Those with radial symmetry display cephalization.
Those with radial symmetry have an oral side.
Those with asymmetry display cephalization.
Those with bilateral symmetry display cephalization.
Answers
Answer:
Bilateral symmetry display cephalization
Explanation:
which element must your food contain so that your body can make new nucleic acids?
Answers
Answer:
A or C i put my bets on A
Explanation:
Answer:
D
Explanation:
D
Some jellyfish are transparent, how will this affect their ability to survive?
Answers
So predators cannot see it as well
Explanation:
It will affect their ability to survive because...since Jellyfish bodies are transparent, that means they are less visible to predators or threats. Which will affect their way to survive because since they are less visible to predators, it gives them a better chance for survival since their predators can't see them very well. It also gives them a better chance for survival because hunters won't be able to see them well enough to catch them because they blend in with the water, which is called transparent.
Hope this helps!
The leaves of a plant are dotted with openings known as stomata when open stomach allow the plant to exchange to games and allow moisture to evaporate helping to draw water from the roots up into the plant these activities help the plant to
Answers
What is the difference between a nocturnal and a diurnal animal?
Answers
Answer:
They make animals survive hence developing different mechanisms in order for them to survive at a different biological clock. The main difference between nocturnal and diurnal animals is that nocturnal animals are the animals that are most active during the night time while diurnal animals are animals that are most active during the daytime.
Explanation:
Which of the following is true about respiration in plants?
Plants do not respire.
Plants respire at night.
Plants respire all the time.
Whereas animals produce carbon dioxide, plants produce oxygen at the end of
respiration.
Answers
Answer: Plants respire at night.
Explanation:
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In Plants photosynthesis can only take place in the presence of sunlight during the day, respiration happens all day long, hence option c is correct.
What is respiration in plants?Plants' respiration is visible at night and day, plants consume oxygen during respiration while also releasing carbon dioxide. Both photosynthesis and respiration take place during the day.
However, only respiration takes place at night, which uses oxygen. A sequence of chemical processes known as cellular respiration converts glucose into ATP, which may then be utilized as energy for a variety of bodily functions.
Glycolysis, citric acid cycle, and oxidative phosphorylation are the three basic processes that take place during cellular respiration.
Therefore photosynthesis takes place during the day but plants respire all the time, hence option c is correct.
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Why is heart disease so prevalent in the United States?
Answers
Answer:
High blood pressure, cigarette smoking, and high blood cholesterol are still major contributors to the national epidemic of cardiovascular disease. High blood pressure affects approximately 1 in 3 adults in the United States,3 and only about half of them have it under control.
Explanation:
What role do decomposers play in the movement of matter
through an ecosystem?
Answers
Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers
Outline the fate of food after absorption.
Answers
Answer:
The small intestine absorbs most digested food molecules, as well as water and minerals, and passes them on to other parts of the body for storage or further chemical change. Specialized cells help absorbed materials cross the intestinal lining into the bloodstream.
What are the two types of limiting factors and how do they differ?
Answers
Answer:
Limiting factors fall into two broad categories: density-dependent factors and density-independent factors. ... Other density-independent factors include hurricanes, pollutants, and seasonal climate extremes. Density-dependent limiting factors tend to be biotic—having to do with living organisms.
Explanation:
answer up there. answer up there. answer up there. answer up thereThe two types of limiting factors are density-dependent factors and density-independent factors. These differ in their influence by the size of a population.
What are limiting factors?
A limiting factor is a variable of a system which causes a noticeable change in the output or another measure of a type of system. These are present in a limited amount.
Limiting factors are of two types: Density-dependent factors and density-independent factors. Density-dependent factors have varying impacts according to the size of the population. Density-dependent factors include food availability, predator density and disease risk. Density-independent factors are not influenced by a species population size. Density-independent factors include temperature, altitude, amount of sunlight, etc.
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