Answer:
1. Passive ventricular fillings.
2. Ventricular ejection.
3. Atrial contraction
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
The following terms describe the physical or mechanical events with the correct phases of the cardiac cycle in mammals (human beings).
1. Passive ventricular fillings: is what happens when depolarization of the atria cause the atria to go into atrial systole. Atrial pressure increases and more blood is forced into the ventricles via the AV valves.
2. Ventricular ejection: is the continued contraction of the ventricles that leads to the pressure inside the ventricles to build up and will thus force open the semilunar valves and blood will be ejected out of the heart to the pulmonary and systemic circuits.
3. Atrial contraction: the process that begins when both the atria and the ventricles are in diastole. Blood from the veins are returning to the heart and the pressure within the atria is higher than the ventricular pressure. Causing the AV valves to open and blood will passively fill into the ventricles. It is important to know that the semilunar valves are closed shut because they have higher pressure than both the left and right ventricle.
why is it important for soil to contain nitrogen, phosphorus and potassium? Why is it important to fix soil that is lacking in these nutrients?
Answer: the best answer that I could give you is that without those things the plant would die.
Explanation: the soil is important because it helps the plant with growing and it hold the roots and the water and other things like that, also without nutrients the plant couldn't survive the nutrients is basically food for the plants
Answer:
Now I answered so you can give that guy brainless
Explanation:
Please help!!!
What are 4 different protists and what makes them special
Answer:
Amoebalike protists, flagellates, ciliates, and spore-forming protists.
Explanation:
Protists are eukaryotes, which means their cells have a nucleus and other membrane-bound organelles. Most, but not all, protists are single-celled. Other than these features, they have very little in common. You can think about protists as all eukaryotic organisms that are neither animals, nor plants, nor fungi.
Hope this helps
Where does the light-dependent stage of photosynthesis occur in the plant cell?(1 point)
cytoplasm
mitochondria
chlorophyll
cell membrane
Answer:
C- chlorophyll
Explanation:
Took the quick check xd :)
The Rock-Soil Cycle was first researched?
First proposed by James Hutton in the 18th century
Which of the following is NOT a true statement about soil microorganisms? A. Microorganisms can be used for medicinal purposes. B. Microorganisms can use oxygen, sulfur, iron or nitrogen to respire. C. Microorganisms can cause disease in plants, animals and humans. D. Microorganisms cannot decompose organic matter.
Answer:
b
Explanation:
b
The incidence of disease is dependent on what environmental factors?
a.
physical environment, lifestyle, and diet
b.
level of industrialization, physical environment, and biological environment
c.
local customs, biological environment, and exercise regiments
d.
none of the above
Answer:
A. Physical environment , lifestyle, and diet
Explanation:
Physical environment because diseases like athletes foot are caused by Physical environment. Lifestyle because diseases like atherosclerosis and heart disease are caused by lifestyle. Diet because diabetes, obesity, and osteoporosis are caused by diet.
Answer:
b.
level of industrialization, physical environment, and biological environment
Explanation:
I got a 100% on the quiz :)
Edge 2021
What is shape does sulfur trifluoride form
1. The framework of a human body that provides structure and allowing movement.
A. Skeletal System
B. Muscular System
C. Integumentary System
D. Digestive System
Answer:
a skeletal system
hope it helps :-) :-)
why is a lagging strand not needed during protein synthesis?
Answer:
template 5'->3"
Explanation:
As we all know, with a linear chromosome, on the lagging strand (template 5'->3') of DNA replication, when the last piece of RNA primer at the 3' end is removed, the DNA cannot be extended and this creates the end replication problem.
The energy that organisms use for supporting life processes such as movement and reproduction are released into the ecosystem as what type of energy?(1 point)
chemical
heat
radiant
nuclear
Question: "The energy that organisms use for supporting life processes such as movement and reproduction are released into the ecosystem as what type of energy?"
Answer: "Heat energy is used by organisms for supporting life processes, including movement and reproduction. Hence, Option B is the correct choice."
Heat energy is the degree of internal energy contained in an organism and is released into the ecosystem.
What is heat energy?Heat energy is what generates the internal and random movement of the particles of a body.
Characteristics of heat energyOrganisms constantly release heat energy.This energy is renewed through the consumption of food, which contains the calories that allow us to continue emitting that energy as long as we live.Therefore, we can conclude that the temperature of an organism and its ability to generate life processes such as movement depend on its heat energy.
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HELP 25 POINTS AND BRIANLIEST IF CORRECT
Thoroughbreds are an example of a type of horse that results from selective breeding. However, not all thoroughbreds have the traits that are most desired. How has the process of selective breeding increased the probability that the horse will have a desired trait? Use information from the stimulus material and your knowledge of science in your answer. In your answer, be sure to:
Explain how selective breeding increases the probability that offspring will have a desired trait.
Explain why not all individual thoroughbreds may express the desired traits.
Answer:
If breeders Breed these horses with other breeds, the foal wont be a straight thoroughbred. So, it will change the horses breed.
Explanation:
Selective breeding increases the probability that offspring will have the desired trait because it limits narrows the gene pool to only include desired variants of a gene. Not all thoroughbreds may express the desired trait because they may inherit an unwanted variant of the gene & mutations may occur.
The traits and characteristics of an animal are determined by the genes they possess. When two animals breed, the offspring inherits one variant of each gene from both parents, known as alleles. This means that all animals have 2 variants for any specific trait.
When a gene in an allele is expressed, it means that the genetic code in that allele is the one that can be seen on the offspring. Gene variants can be classified based on how likely they are to be expressed as:
Dominant RecessiveWhen one allele is expressed and the other is not, it is because that allele is dominant and the other is recessive. Recessive variants for a gene will only be expressed if both alleles inherited by the offspring possess are recessive. dominant genes are symbolized by a capital letter and recessive genes with a lower-case letter.
Selective breeding is used to continuously breed animals that have similar variants of the desired trait. If breeding were to be natural, then many of what we consider desirable traits may be lost behind the expression of common, more dominant genes. Selective breeding is done by narrowing the gene pool, meaning that we only allow breeding between animals known to possess the desired trait.
Not all thoroughbreds may express the desired traits because sometimes even though a parent has the desired variant of a trait, they may also contain a different recessive or dominant variant of a trait. Since selective breeding does not control what variant exactly the offspring inherits, it does not always work with each offspring. Genetic mutations can also affect the outcome.
for more information on genes see:
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Which of these characteristics would not help you identify an animal you encounter along the seashore as an echinoderm?
Answer:
Spiny skin is another characteristic.
70
70
60
60
50
50
40
What is the volume of the ring?
A. 10 cm3
B. 50 cm
C. 90 cm
D. 20 cm
Answer:
hhhh
Explanation:
Help last question I think it’s molecules Help ASAP
Answer:
atoms po or molecules
Explanation:
sana po makatulong
Which one of the following is an example of a negative feedback loop?
Scratching a mosquito bite, causing it to itch more
Sexual arousal, leading to desire for more stimulation
Eating when your blood sugar is low
All of the above
Answer:
Eating when your blood sugar is low.
Explanation:
A negative feedback loop is a loop that destresses or neutralizes a loop. If your blood sugar dropped and you are food that would counter act your drop in blood sugar returning it to a neutral level.
Which answer correctly explains how the ATP molecule differs in function from the ADP molecule? (1 point)
Which feature do highland climates have that lower elevation areas do not?
O a tundra where there are no trees
O a treeline beyond which tree do not grow
O permafrost, or a part of the ground that is permanently frozen
O an ice cap, or a permanent cover of ice and snow
Answer:
a treeline beyond which tree do not grow
Explanation:
The harsh climate conditions do not allow for trees to grow beyond the treeline. The temperature decreases at high altitudes and it is too cold for plants to grow. It is also windier at higher altitudes and there is less water (drains downward toward lower altitudes). These things make it tough for plants to grow.
Answer:
can you help me please?? https://brainly.com/question/22150709
Explanation:
a treeline beyond which trees do not grow
What are the effects of overpopulation, how can they be controlled, and why does this matter?
Answer:
Explanation:
Overpopulation refers to too much number of people occupying space that is not enough for them. That increase in the number of people that resources and space could not contain.
The effects of overpopulation include;
Environmental Pollution
Global warming
Deforestation
Overfarming
Eutrophication
Too much demand on food, water, housing, healthcare, transportation
Overpopulation can be controlled through the following;
Education i.e enlighten people.
Empowering women to be independent and avoid teenage marriage.
Family planning.
Through government intervention and incentive.
It is very important to control over population so as to reduce environmental pollution, availability of resources for man, non extinction of non Renewable natural resources, reduction in disaster , fights, conflicts e.t.c.
Effects of overpopulation includes unemployment and environmental degradation.
It can be controlled by educating the general public.
Population control is essential for a healthy and prosperous existence, for good health and education.
Define overpopulation.Overpopulation, also known as overabundance, occurs when the population of a species exceeds the environment's carrying capability.
Effects of overpopulation are as follows:
Natural resource depletion.Environmental degradation.Wars and conflicts.Unemployment is on the rise.Overpopulation can be controlled in the following ways:
Educating the general public helps them comprehend the need of having only one or two children at maximum.Because the world's population is rapidly increasing, promoting public knowledge about family planning and informing people about the dire consequences of overpopulation can assist to slow population increase.Population control is essential for a healthy and prosperous existence, for good health and education, and for a country's rapid progress. Population management is also required to decrease the stress on nature and to address the growing environmental challenge.
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what rules or restrictions do you think should govern constructions in areas with a high risk of erosion?
Evaluate the model. Select the statements that do NOT accurately identify the structures labeled in the picture. Choose ALL that apply.
C and D is the correct answer. I just did the question.
Please help!!!!
Can someone please give a small description on these words based off of animals cell
Golgi body
Cell membrane
Centrosome
Nucleus
Vacuole
Mitochondrion
Answer:
1.A Golgi body, also known as a Golgi apparatus, is a cell organelle that helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell.
2.The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
3.The cytocenter or centrosome is a cellular organelle that is not surrounded by a membrane; ... " centrosome- related bodies " (CRBs for centrosome- related bodies) are often seen at ectopic sites.
4.The nucleus is a membrane-bound organelle that contains genetic material (DNA) of eukaryotic organisms. As such, it serves to maintain the integrity of the cell by facilitating transcription and replication processes. It's the largest organelle inside the cell taking up about a tenth of the entire cell volume.
5.A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products.
6.power house of the cell
Explanation:
Recently, a type of genetically modified fish has
been approved for sale for human consumption.
The modified fish contain a growth hormone
gene from a different fish species. As a result, the
modified fish grow rapidly and are ready to sell in
almost half the time it normally would take. The
modified fish are able to produce the new growth
hormone because
(1) each of their cells contains the new gene to
produce growth hormone
(2) each gene contains the code to synthesize
carbohydrates
(3) the altered gene directs the mitochondria to
synthesize the hormone
(4) the modified body cells are able to reproduce
by meiosis
Answer:
the answer is 1
Explanation:
I did the test it was right
Are clean metal nails becoming rusty metal nails, a reversible change? yes or no explanation please.
Answer:
no, It is irreversible - the damaged metal cannot be returned to its former state.
Explanation:
A food chain is the feeding relationship among all of the organisms in an ecosystem.
•True
•false
Answer:
false
Explanation:
Answer:
Answer: true explination
Food chains and food webs model feeding relationships in ecosystems. They show how energy and materials are transferred between trophic level when consumers eat producers or other organisms. A food web is a diagram of feeding relationships that includes multiple intersecting food chains.
Treatment Preparation
Your treatment choices are saline solutions with different amounts of salt (NaCl) that can be added to
Clark's blood and affect osmosis in the brain.
In medicine and veterinary medicine, saline solutions are compared with the normal concentration of
sodium (~143 mmol/L) in healthy blood. Three saline solutions are available: isotonic, hypotonic, and
hypertonic.
Concentration of Sodium
Interpret each as higher, lower, or equal to
normal blood Nat concentration.
Lower
Equal Higher
Isotonic Saline
Hypotonic Saline
000
Hypertonic Saline
Answer: isotonic saline is equal
Hypotonic saline is lower
Hypertonic saline is higher
Explanation:
Here, three saline solutions are available: the isotonic saline solution has an equal sodium concentration, the hypotonic solution has a lesser sodium concentration, and the hypertonic solution has a high sodium concentration.
What is the significance of the saline solution in the medications?It is critical in the medication because the solution is made up of a mixture of salt and water through which the drugs are delivered and because it is given in intravenous (IV) therapy or to rehydrate patients when there is a need for it. The saline concentration should be regulated here in this solution, or else it may change the blood cells' structure.
Hence, here, three saline solutions are available: the isotonic saline solution has an equal sodium concentration, the hypotonic solution has a lesser sodium concentration, and the hypertonic solution has a high sodium concentration.
Learn more about the saline solution here.
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How could the definition of life change in the future
Answer:
it could destroy humanity as we know it
Explanation:
or it could be good and humanity will be ok
What is the plantlike organism that does NOT photosynthesize?
Answer:
heterotrophic algae and the apicomplexan parasites
Explanation:
Obliquity refers to the changes to the direction of Earth's tilt
A
True
B
False
Find 2 mistakes in this DNA strand.
of the following measurements, the one that would be incomplete without giving a direction
is
A. time
B. force
C. temperature
D. length
(Sorry Input it under biology i didnt know what else to put)