Answer: The correct answer to the question is option D
ISCHEMIC HEART DISEASE.
Explanation: To answer the question effectively, let us look at the options given,what they are and how they affect the heart.
Endothelial cells play a crucial role in the regulating vascular tone,They do so by secreting variable amounts of constricting and relaxing factors inorder to control tissue perfusion.
Hypertension on the other hand occurs as a result of factors that varies distinctively and not all related to vascular tone.
Dysrhythmias on it's own will affect the function and conduction of heart chambers but not necessarily vascular tones.
Truncus arteriosus results in only in one large artery exiting/leaving the heart.
Why is mitosis important to all living things?
Answer: It's important because mitosis helps living things grow and replace old or damaged cells.
Consider a system in which low levels of protein "Q" triggers production of hormone A. The reaction of target cells of hormone A is to produce and release hormone B, which stimulates production of hormone C. In response to hormone C, the target cells up-regulate protein Q. In this scenario we see an example of _____.
Answer:
Negative feedback
Explanation:
Negative feedback is produced when a mechanism is amplified through an inverse loop, which tends to reduce the fluctuations in the system. In this case, the negative feedback mechanism represents a homeostatic response of the body where the release of a target hormone (hormone C) decreases in response to the increase of a protein (protein Q) upstream in the signaling pathway. Therefore, in this scenario, it is expected that negative feedback causes a decrease in hormone function.
What does food provide to organisms? homeostasis shelter energy air PLZ HELP ME PLZ PLZ PLZ
Answer:
Option C. is the correct choice.
Explanation:
Food provides "energy" to organisms.
Best Regards!
Answer:
C. Energy
Explanation:
please please help!!
Answer:
First peak which touches the A line
Which uses of soil are discussed in the video? Check all that apply. as a habitat for animals to live in as a way to clean and store water as a place for plants and crops to grow as a material to clean and smooth skin as a building material for homes and buildings as an area to build windmills for energy production
Answer:
3. As a place for plants and crops to grow
4. As a material to clean and smooth skin
5. As a building material for homes and buildin
Answer:
3,4,5
Explanation
When human skin suffers a cut, the process of healing rapidly begins allowing for wound closure and healing within a few days. Keloids occur when skin around wounds continues to grow after the skin has healed. A disruption in the regulation of which cellular process is probably responsible for this condition
Options
A. Mitosis
B. Meiosis
C. Apoptosis
D. Phagocytosis
Answer:
A
Explanation:
Mitosis is a type of cell division which takes place in living organism during growth and development.Therefore it is ensures the regenerations of cells and tissues during healing.
Therefore the restoration of new cells to the skin following injuries is due to mitosis.Since this is a multiplication division(2n) in which the daughter cells are exactly like the parents' cells the new tissues of the skin by mitosis, look exactly like the previous one that was injured.
In cases where the mitotic growth control is lost, the scare tissues of the injured part overgrows with granulation tissues and this leads to Kaloids.
Its is a mass of Collagen Type 1.(Collagen is an fibrous proteins which has largest proportion in mammals).
Keloids is characterized with pink or red coloration and elevation of the area,excessive growth of the area, with irritating patch skin
A researcher wants to introduce the human gene encoding tissue plasminogen activator (used to dissolve blood clots) into a mammal so that the protein will be secreted into the milk of the mammary gland. For the researcher to succeed, the gene should be:
Answer:
In the given case, for the researcher to succeed, there is a need to place the gene next to the promoter sequence, which gets expressed in the mammary cells. The sequences of DNA, which illustrate that where the transcription of a gene by the RNA polymerase initiates is known as the promoter. These sequences are generally situated at the 5 prime terminals of the initiation site of transcription or are situated directly upstream.
One of the needs of today's taxonomy is:
O more information
O more species
O more interpretation
Ofewer species
Answer:
The correct choice is A
Explanation:
Taxonomy is the process of coining names for and categorising plants and animals into groups based on factors or qualities which are similar and or those which distinguish them.
Taxonomy helps to give meaning to the vast diversity of fauna and flora on planet earth.
Cheers!
Answer:
The answer is A
Explanation:
You can tell because the way that it is
Why is it necessary to separate oxgynated blood and deoxgynated blood in living organisums?
Answer:
For efficient transportation of blood.
Explanation:
What structure(s) in the cardiovascular system connect arteries to veins?
valves
heart
capillaries
lymph
Answer:
C. Capillaries
Explanation:
form the connection between the vessels that carry blood away from the heart (arteries) and the vessels that return blood to the heart (veins).
A water strider (which can walk on water)has legs that are coated with a hydrophobic substance. What might be the benefit? What would happen if the substance were hydrophilic?
Answer:
The water striders are the species, which are about half an inch in length and exhibiting a thin body with three legs set. The legs of water striders exhibit small hairs, which helps in repelling water and holding air. The water striders by repelling water stand on the surface of the water and the captivated air permit them to float and move readily.
The legs of water striders are coated with hydrophobic substances, which helps in repelling water and assists in keeping the terminals of the legs from getting coated with water. In case, if the legs of the species were coated with a hydrophilic substance, then water would be drawn up by the legs and would make the striders break through the surface and thus would have a tough time to walk on water.
According to Piaget, children have acquired the cognitive skill of conservation when they're able to
Answer:
The question lacks options, the options are:
A. understand the viewpoint of other people.
B. realize that the term heavy describes an object one way and the term big describes it another way
C. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal.
The answer is C
Explanation:
Piaget proposed the theory of cognitive development, which talks about how human intelligence is developed. Piaget worked with Children because he believed they played a significant role in the development of cognitive intelligence. Based on his work, he proposed four stages of cognitive development viz: sensorimotor, preoperational, concrete operational and formal operational stages.
However, in the preoperational stage, Piaget described children between ages 2-7 as being in this stage of cognitive development where they are yet to comprehend mental logic. One characteristics of this stage is CONSERVATION, which is the ability to know that changing a substance's appearance doesn't change the properties of that substance. Piaget proposed that Children between the ages of 2-7 lacked this conservative characteristics.
He performed an experiment where he used two beakers with the same amount of liquid. He then emptied the contents of one of the previous beakers into a new beaker with different shape (longer). Piaget was able to notice that Children at the pre-operational stage were unable to understand that the contents of the two beakers (longer one and previous beaker) were still the same despite the beaker has been changed.
Hence, according to Piaget, a child has acquired the cognitive skill of conservation when he/she is able to understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal.
Compare and contrast James’s public school experience with his mother’s public school experience. Identify at least two similarities and two differences in their experiences.
I inferred you are referring to the Characters of the book "The Color of Water".
Explanation:
James and his mother Ruth both attended public schools, however, his mum experienced a racially divided public school environment.
However, because they were Jews, his mum chose a public school attended predominantly by Jewish students. In a sense, he experienced lesser discrimination since he was surrounded by those like him.
____is associated with deamination of protein
Answer:
Deamination is the removal of an amino group from a molecule
Deamination is associated with deamination of protein
Answer:
in humans , deamination takes place primarily in the liver, it can also occur in the kidney. if there's excess protein intake , deamination is used to break down proteins with amino acids for energyhow is chloroplast similar to bacterium??
Answer:
it i simlr because they are both i the cell
Explanation:
in the cell
Answer:
they are similar in size. duplicate their DNA and other structures and then divide into two identical organelles
which represents the optimal condition for most enzymes in the small intestine? 1. pH12 2.45°C 3. pH10 4.pH2 5.37 °C
Answer:
5.37 °C
Explanation:
The optimal condition for most enzymes in the small intestine is 37 °C.
Enzymes are responsible for mediating several biological processes in the human body. The optimal condition for enzymes in the small intestine has an optimum pH of about 7.5 and the temperature is 37 °C, which is the normal body temperature of the human body.
Hence, the correct option is "5. 37 °C".
TLRs are Group of answer choices the coatings of pathogens by complement. present in intact skin, sebum, tears, etc. phagocyte receptors that detect PAMPs. nonspecific leukocytes that secrete toxins onto the surface of virally infected cells. molecules that damage cells, resulting in cell lysis.
Answer: Phagocyte receptors that detect PAMPs
Explanation:
TLRs or Toll-like receptors, are a family of proteins that are part of the innate immune system. TLRs are transmembranous and recognize pathogen-associated molecular patterns (PAMPs), which are groups of chemical characteristics common to certain types of pathogens. Patterns detected by TLRs include lipopolysaccharide, a compound found on the surfaces of Gram-negative bacteria, and double-stranded RNA, which is an integral part of the life cycles of many viruses. These PAMPs are generally important for the survival of the pathogen, so they are well preserved. Activation of these receptors induces inflammatory responses in leukocytes of myeloid lineage, signaling via NF-κB, which is a transcription factor that activates pro-inflammatory genes. Activated TLRs also increase the production of co-stimulatory molecules such as CD80, CD86 and CD40. These proteins, expressed on the surface of antigen-presenting cells, are necessary for the activation of T-lymphocytes by dentritic cells and macrophages already showing antigens in their MHC type II molecules (Major Histocompatibility Complex, they participate in the presentation of antigens to T lymphocytes)
In addition, TLR-mediated signaling on antigen-presenting cells (APCs) plays an important role in linking the innate and adaptive immune responses.
The human genome project identified the sequence of base pairs in human DNA and identified several genes. Which question would least likely lead to a scientific investigation based on these findings? Answers: Are certain humans more likely to develop genetic diseases? How can DNA be used to identify criminals? Can drugs be developed to target certain genes? Should there be laws to protect DNA information?
Answer:
I believe the correct answer is "How can DNA be used to identify criminals?".
Explanation:
The question asks to pick the question that is least likely to lead to a scientific investigation based on these findings. The question states that the HGP identified sequences of base pairs in human DNA as well as many genes. The other questions were very likely to have arisen bases off of these findings. Criminal identification based on DNA is not the focus of the Human Genome Project.
During which stage of cellular respiration is glucose broken down into two molecules of pyruvic acid?
Answer: Glycolsis
Glycolysis happens in the cytoplasm of the cell. Afterwards, in the presence of Oxygen, the two molecules will undergo pyruvate oxidation in the mitochondrial matrix.
what is cardiovascular arrest...?
explain...?
Answer:
Cardiac arrest is the abrupt loss of heart function in a person who may or may not have been diagnosed with heart disease. It can come on suddenly, or in the wake of other symptoms. Cardiac arrest is often fatal, if appropriate steps aren’t taken immediately.
Each year in the United States, more than 350,000 cardiac arrests occur outside of a hospital setting.
These two distinct heart conditions are linked. Sudden cardiac arrest can occur after a heart attack, or during recovery. Heart attacks increase the risk for sudden cardiac arrest. Most heart attacks do not lead to sudden cardiac arrest. But when sudden cardiac arrest occurs, heart attack is a common cause. Other heart conditions may also disrupt the heart’s rhythm and lead to sudden cardiac arrest. These include a thickened heart muscle (cardiomyopathy), heart failure, arrhythmias, particularly ventricular fibrillation, and long Q-T syndrome.
Cardiac arrest is reversible in most victims if it's treated within a few minutes. First, call 911 for emergency medical services. Then get an automated external defibrillator if one is available and use it as soon as it arrives. Begin CPR immediately and continue until professional emergency medical services arrive. If two people are available to help, one should begin CPR immediately while the other calls 911 and finds an AED.
Sudden cardiac arrest is a leading cause of death – over 320,000 out-of-hospital cardiac arrests occur annually in the United States. By performing Hands-Only CPR to the beat of the classic disco song “Stayin’ Alive,” you can double or even triple a victim’s chance of survival.
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A cell has a 5\%5%5, percent salt concentration. It is placed into a solution with a 0.5\%0.5%0, point, 5, percent salt concentration. What will happen to the cell?
The question is not clear, so the clear question is as follows:
A cell has a 5 percent salt concentration. It is placed into a solution with a 0.5 percent salt concentration. What will happen to the cell?
Answer:
Cell will get swelled and burst
Explanation:
When a cell is placed in a solution with less concentration, then the solvent particles move from lower concentration to higher concentration through a semipermeable membrane and the process s called osmosis.
In this case also, the cell has higher concentration and the solution has less, so water will move into the animal cell, causing it to swell and burst after some time.
Hence, the correct asnwer is "Cell will get swelled and burst".
Answer:
Water will move into the cell, causing it to swell.
Explanation:
The cell has higher concentration of solute and a lower concentration of water than the solution it is placed in. This means that water will move into the cell, causing it to swell and ultimately burst.
Right from khan :))
Natural selection states that complex organisms evolved through random mutations alone. True or False?
Answer:
False.
Explanation:
This statement is false because organisms don't evolve - populations do. New gene variants (i.e., alleles) are produced by random mutation, and over the course of many generations, natural selection may favor advantageous variants, causing them to become more common in the population. However, because mutation rates are low relative to population growth in most species, mutation alone doesn't have much of an effect on evolution.
Which option identifies ways that people positively affect Earth’s resources?
Answer:
c is the correct answer on EDGE2020
There are many ways by which humans can positively impact Earth's resources. These include reforestation, reducing pollution, protection of endangered species, and mindful use of water and attempts to replenish the water bodies, etc.
What are the earth's resources?The resources present on earth which were not formed due to any kind of human intervention are called earth's resources or earth's natural resources. There are various natural resources found on earth.
Energy resources like petroleum and natural gas, metallic resources like iron, copper, and gold, and nonmetallic resources like granite, sandstone, etc are some of the examples of various resources found on earth.
However, due to the rise in consumerism, these resources are being overexploited by humans which have resulted in their depletion.
But, the awareness of this is spreading fast and humans have adopted various measures to prevent negative impacts and induce positive impacts on the resources of the earth.
Therefore, humans can have a positive impact on Earth's resources.
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Please help me...
Blonde hair (represented as b) is a recessive trait. If Julie has blonde hair, which of the following could have been her parents' genotypes?
A. Bb, bb
B. BB, bb
C. BB,BB
D. Bb,BB
I think its Bb, bb because if julie has blonde hair then it's most likely to be Bb, bb
If Julie has blonde hair, the genotypes of their parents could have been found to be Bb and bb. Thus, the correct option for this question is A.
What do you mean by Genotypes?Genotypes may be defined as the ultimate combination of alleles of those genes which are selected for specific studies in order to express some genetic characteristics.
According to the context of this question, if the trait of Blonde hair is recessive in nature. This means that both the alleles of this gene are recessive, i.e. bb.
Now, if Julie has blonde hair, which means both alleles are recessive. So, the genotypes of parents of Julie are either homozygous recessive or heterozygous in nature. This characteristic is well determined by option 1.
Therefore, if Julie has blonde hair, the genotypes of their parents could have been found to be Bb and bb. Thus, the correct option for this question is A.
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What are emergent properties?
Answer:
Emerging properties may arise by transient interactions such as individual organisms building a population. Human interaction in populations leads to the emergence of language, poetry, musical composition, and art. When populations of different species interact, communities form. Many emergent properties are the result of interactions between species in communities.
Emergent properties are characteristics of a system that do not exist in any of its constituent parts individually but originate as a result of interactions between those parts.
What does the characters indicate at ?These characteristics are frequently intricate and challenging to forecast. Emergent characteristics are a crucial idea in several disciplines, including physics, chemistry, and biology.
Emergent qualities in biology can be observed in an organism's behaviour. For instance, a flock of birds' behaviour is an emergent characteristic of the individual birds that make up the flock.
The behaviour of the flock is a product of interactions among the individual birds and is not exhibited by any one individual bird. Similar to this, a school of fish's behaviour is an emergent characteristic of each fish.
Emergent features in chemistry can be observed in how molecules behave. An emergent attribute of a substance's individual molecules, for instance, is the substance's boiling point. The boiling point is not a property of any one molecule, but rather the outcome of interactions between the molecules.
Particle behaviour in physics exhibits emergent features. An emergent attribute of a material's individual particles, for instance, is the material's electrical conductivity.
The interactions between the individual particles produce the electrical conductivity, which is not a property of any one of the individual particles. As a result, emergent properties are characteristics of a system that develop.
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Which activity would most likely cause a rapid breakdown of glucose molecules
Answer:
A rabbit running a predator
Explanation:
The following question has two parts. First, answer Part A. Then, answer Part B.Caused by a mutation, sickle cell anemia is a disorder that affects hemoglobin, the red blood cell molecule that carries oxygen to cells throughout the body. The β chain of the hemoglobin protein is a single chain of amino acids and is 147 amino acids long. In humans, the gene that encodes for the β chain is located on chromosome 11. The diagrams show the DNA, RNA, and amino acid sequence of an unaffected person and a person with sickle cell anemia.image f8707eaefc0147c9bd074a15bb19c344Part A:Where does the mutation that causes this disorder occur?AThe mutation occurs on the DNA.BThe mutation occurs on the RNA.CThe mutation occurs on the ribosomes.DThe mutation occurs on the amino acid.Part B:Which BEST describes the result of this mutation?AThe entire sequence of amino acids is changed.BThe RNA strand does not code for the correct amino acids.CThe change in amino acids shortens the polypeptide sequence.DThe alternation of a single nucleotide encodes for a different amino acid.
What is the definition of salinity ?
Answer:
Salinity pertains to the degree of saltiness or the relative proportion of salt in a solution. ... By definition, salinity in relation to limnology refers to the total amount of dissolved solids in water in parts per thousand by weight.
Answer:
Salinity is the saltiness or dissolved inorganic salt content of a body of water. Substances that are dissolved in water are usually called solutes.
Explanation:
how can evidence from an experiment in relationship to the hypothesis
Answer:
The Hypothesis is a prediction based on the theory being tested.
The evidmence can support the Hypothesis or invalidate the Hypothesis.
Explanation:
how can new stuff be made from old stuff
Answer:
BUY A NEW ONE
clean it
or sell it , with the money you sold the item use that money to buy a new one
Explanation:
Answer:
That is called upcycling. IKEA has started doing that with their products
Explanation:
