Identify the structure of the human heart which is valve between the left atrium and left ventricle of the heart, consisting of two triangular flaps of tissue that prevents blood from flowing back into the atrium. Also, called the bicuspid valve. (check out the hint)


A) mitral valve


B) aortic valve


C) tricuspid valve


D) pulmonary valve

Together with the hormone insulin, glucagon regulates blood sugar levels and helps to maintain target ranges. Insulin is produced to prevent blood sugar levels from increasing too high (hypoglycemia) while glucagon is released to prevent blood sugar levels from falling too low  (hyperglycemia).

The pancreatic islets of Langerhans' alpha cells release the peptide hormone known as glucagon. The best-known effect of glucagon is to promote glucose synthesis in the liver and hence maintain appropriate plasma glucose concentrations. Hypoglycemia is physiologically the most powerful secretory stimulation. The metabolism of hepatic lipids and amino acids is also influenced by glucagon, which may lead to an increase in resting energy expenditure.

The INS gene in humans encodes insulin, a peptide hormone generated by beta cells of the pancreatic islets. It is regarded as the body's primary anabolic hormone.

To learn more about hypoglycemia click here,

https://brainly.com/question/14757163

#SPJ4

Answer:

HOW TO MAKE OUR SURROUNDINGS CLEAN AND GREEN

Everyone loves to stay in a clean and green environment, we always dream of a clean and pollution free environment. Very few people make an effort to take any action to maintain a clean environment. Even though civic agencies are charged with the responsibility to ensure that the environment is clean, it is also important to support them to maintain a clean and a green environment. It is our responsibility to keep our surroundings neat because this will help us live healthily

There are many we can do to keep our surroundings clean since every household generates wastes, we should avoid throwing the waste everywhere. Garbage pollutes our environment, especially the plastic bags. We need to be eco-friendly by using bags that can be recycled like paper or jute bags instead of plastic bags.  We can only maintain a green environment by planting trees and plants to make our environment beautiful. Plants can help in cleaning the air, having them in the house will reduce indoor pollution by more than half. Since we live in the society and we are part of the environment, we have the moral responsibility to contribute to a clean environment.

To make our environment clean and green, we need to take action and be the change that we want to see in others; everyone keeps on complaining about how other people are polluting the environment without taking any corrective measure.  Most of the time we also pollute the environment by engaging in several activities like littering.  As change agents, we need to set a good example by using dustbins and burning waste to keep our environment clean.

Reuse products whenever you can, manufacturers use a lot of materials when packaging hence we end up with many waste products, instead of throwing some of the items used for packaging we can try reusing them.  For instance, boxes used for packaging can be used for storage. If only we can be creative, you will be surprised to know many ways of reusing items that you thought were trash. To maintain a clean environment, it is important to buy items made of non-toxic and recycled materials to help conserve valuable resources. Instead of buying disposable plates, cups invest good quality items that can be washed and be reused.</p>

One of the simplest ways of maintaining a good environment is to take care of our trees because tree helps in purifying the air and controlling air pollution. Having allotted of trees within our neighborhood will enable us to stay healthy. Proper use of water is equally important since water is the most important resources proper use and storage of water will help have enough to use. Excess or deficit of water is harmful, water logging around the houses  can result to disease because mosquitoes will breed causing malaria and other deadly diseases. There are several ways we can get involved to save the environment.

Many charity events in our community are devoted toward saving the environment. You can choose to participate in these events at the local level to make a difference in the society. You will feel great by helping in a worthwhile course and set a good example for others. We do not need allot of resources to save the environment, sometimes the best thing to do is to make small changes in our everyday activities. The small things will add up to make a significant difference in our environment. You need to review everything you do and see what you can do differently to maintain a clean and green environment.

Hope it helps !

When not at work, neurons have a slight negative charge. This is called the resting potential.

The resting potential in neurons is created by the unequal distribution of ions between the inside and outside of the cell. At rest, neurons have more negative ions inside the cell than outside, and more positive ions outside the cell than inside. The resting potential is typically around -70 millivolts, although it can vary depending on the type of neuron and other factors.

The resting potential is an important feature of neurons because it allows them to transmit signals. When a neuron receives a signal, such as from another neuron or from a sensory receptor, the resting potential becomes less negative. This change in voltage causes channels in the cell membrane to open, allowing ions to flow in and out of the cell. This generates an electrical signal, which travels down the neuron's axon to the next neuron in the circuit.

The resting potential also plays a role in the process of synaptic transmission. When an action potential reaches the end of a neuron's axon, it triggers the release of neurotransmitters into the synaptic cleft, the small gap between the presynaptic and postsynaptic neurons. These neurotransmitters bind to receptors on the postsynaptic neuron, causing ion channels to open and change the resting potential. This can either make the postsynaptic neuron more likely to fire an action potential or less likely, depending on the type of neurotransmitter and receptor involved.

Learn more about resting potential here:

https://brainly.com/question/31457988

#SPJ11

Answer:

100%

Explanation:

By crossing a bay stallion with a buckskin mare, 100% of offspring will have the same phenotypes as the mother (i.e., buckskin mare).

In conclusion, by crossing a bay stallion with a buckskin mare, 100% of offspring will have the same phenotypes as the mother (i.e., buckskin mare).

Learn more in:

https://brainly.com/question/3578928

Two biotic factors that might affect the population of mice in a barn are predators such as owls or snakes, and competition for resources with other mice.

Two abiotic factors that might affect the population of mice in a barn are temperature and availability of food. Extreme temperatures could lead to death or migration, while a lack of food could decrease the population.

The availability of food also affects the size of the population. If food is scarce, mice will either leave or die off. Therefore, the population size of mice in a barn is affected by a variety of biotic and abiotic factors.

To know more about biotic factors click on below link:

https://brainly.com/question/27430655#

#SPJ11

Genetic drift might affect this small population of chimpanzees, It will reduce genetic diversity.

Populаtion size, technicаlly the effective populаtion size, is relаted to the strength of drift аnd the likelihood of inbreeding in the populаtion. Smаll populаtions tend to lose genetic diversity more quickly thаn lаrge populаtions due to stochаstic sаmpling error (i.e., genetic drift). This is becаuse some versions of а gene cаn be lost due to rаndom chаnce, аnd this is more likely to occur when populаtions аre smаll. Аdditionаlly, smаller populаtion size meаns thаt individuаls аre more likely to breed with close relаtives.

Your question is incomplete, but most probably your full options were

A. It will accelerate the appearance of new traits.

B. It will promote the survival of chimpanzees with beneficial traits.

C. It will increase the number of alleles for specific traits.

D. It will reduce genetic diversity.

Thus, the correct option is D.

For more information about genetic drift refers to the link:

https://brainly.com/question/2142579

#SPJ4

Answer:

biosfera

Explanation:

During repetitive stimulation, Annie's motor muscles produced a response which fatigued which must have been due to some issues in the communication.

Myasthenia gravis is basically a chronic autoimmune disorder. In this disorder, the antibodies then destroy the communication which is present between muscles as well as the nerves. This basically causes the skeletal muscle weakness. Annie's muscles therefore fatigued during the repetitive stimulation.

Myasthenia gravis majorly affects the voluntary muscles which are present in the body, and especially affects those muscles which are responsible for controlling the  limbs eyes, throat, and mouth. Breathlessness, weakness, eye strain, blurred vision were some of the symptoms must be shown by Annie.

To know more about Myasthenia gravis

https://brainly.com/question/29925271

#SPJ4

Answer: A line

Explanation:

Explanation:

amphibians have smooth, sticky wet and highly porous skin to perform various functions.

reptiles have a dry, hard and scaly skin, which guards them in harsh conditions.

amphibians lay their eggs in water and cover them with gel.

reptiles lay their eggs on land and have a hard protective shell.

The base composition of the virion DNA of an E. coli phage, such as ΦX174, can provide important information about the structure and function of the phage's chromosome.

The high proportion of thymine and the unique combination of nitrogenous bases in ΦX174's virion DNA suggest a role in the stability and efficient replication of the phage.

The virion DNA of an E. coli phage, also known as bacteriophage ΦX174, contains the genetic information that is used to infect and replicate within a host bacterium.

The base composition of the virion DNA, or the proportion of different nitrogenous bases that make up the DNA, can provide important information about the structure and function of the phage's chromosome.

In the case of ΦX174, the virion DNA has a base composition of 25% adenine (A), 33% thymine (T), 24% guanine (G), and 18% cytosine (C). This composition is unique among phages and bacteria and is thought to play a role in the stability and function of the phage chromosome.

One possible explanation for the high proportion of thymine in the virion DNA of ΦX174 is that it may play a role in the stability of the chromosome. The high number of thymine-adenine base pairs in the DNA can help to maintain the stability of the chromosome, preventing breakage and damage to the genetic information.

To know mare about virion refer here:

https://brainly.com/question/13252358#

#SPJ11

Answer:

Cells

Explanation:

Answer:

cells

Explanation:

Differential reproduction of genotypes is a process in which specific individuals with certain genetic traits leave more offspring than others. This differential reproductive success of individual organisms causes a change in the genetic makeup of a population over time, which is called evolution.

It is a biological process that occurs over millions of years and can lead to the formation of new species. The process of evolution is driven by various mechanisms, such as natural selection, genetic drift, mutation, and migration. It is the process by which organisms with traits that are advantageous for survival in a particular environment are more likely to survive and reproduce than those with traits that are not advantageous.

The individuals that are better adapted to the environment are more likely to leave more offspring than those that are less well-adapted. Inbreeding is a process in which closely related individuals mate with each other, leading to a higher frequency of homozygous genotypes. Genetic rescue is a process in which genetically diverse individuals are introduced into a population to increase genetic variation and improve the population's chances of survival.

To know about organisms visit:

https://brainly.com/question/13278945

#SPJ11

Answer:

pollen and ovule

Explanation:

Pollination happens when a pollen grain, which contains half the genetic material needed to produce a new seed, is transported to an ovule.

The megagametophyte is found in the ovule, whereas the pollen grain is the microgametophyte.

Pollen grains are male reproductive structures that give rise to sperms, whereas ovules are female reproductive structures that give rise to egg cells. This is the primary distinction between pollen grains and ovules.

A flower has more pollen grains than ovules so that the pollen has a better chance of reaching the ovules.

Where it will have a better chance of causing them to produce seeds, which will lead to the growth of additional plants.

The portion of a flower that contains the egg and which supplies the other half of the DNA needed for a viable seed to form.

Therefore, pollen and ovule plant cells contain half the DNA from one parent plant.

Learn more about pollen and ovule here:

https://brainly.com/question/1084819

#SPJ6

Answer:

the answer is B

Explanation:

Repente the experiment usando liquids otero limón Juice and water

The section of a chromosome that contains instructions for building proteins is called c) DNA.

DNA is the blueprint for producing proteins in cells. A gene is a segment of DNA that contains instructions for making a particular protein or RNA molecule. During transcription, the DNA sequence is converted into a complementary RNA sequence, which is then used as a template for building the protein. The genetic code determines which amino acids will be used to make the protein, and this code is carried by the sequence of nucleotides in the mRNA. The information contained in the DNA sequence is essential for the survival and function of the cell, and changes to the sequence can cause genetic disorders or diseases. Therefore, understanding the structure and function of DNA is crucial for understanding basic biological processes and developing new treatments for genetic diseases.

To know more about DNA

brainly.com/question/30993611

#SPJ11

During replication strands of DNA separate from each other when bonds are broken between nitrogen bases. Therefore, option (C) is correct.

The biological process of creating two identical copies of DNA from a single original DNA molecule is known as DNA replication. All living things replicate their DNA, which is the most crucial component of biological heredity.

There are two stages to the beginning of the DNA replication process. To begin, a protein known as an initiator unwinds a portion of the DNA double helix along a very short region. After then, a protein that is known as helicase attaches itself to the DNA strands and breaks the hydrogen bonds that are present between the bases. This results in the two strands of DNA being separated.

When two single strands of DNA are cut apart, a 'Y'-shaped structure is produced that is referred to as a replication 'fork.'

Learn more about DNA replication, here:

https://brainly.com/question/16464230

#SPJ2

Hello!

Your answer: Delta

Have a Great day!

Answer:

its D

Explanation:

I would predict that is may not be in the Hardy-Weinberg equilibrium because the allele and genotype frequencies might not stay constant from generation to generation since other evolutionary influences (inbreeding) are present. The Hardy-Weinberg principle requires that mates are chosen at random without preference for a particular trait, and in this case, mates were likely chosen based on the limited amount of choices on the island, and inbreeding is a unique form of nonrandom mating.

Hello True Beauty fan!

Most living things need oxygen to survive. Oxygen helps organisms grow, reproduce, and turn food into energy. . Oxygen gives our cells the ability to break down food in order to get the energy we need to survive.

Oxygen is essential to have efficient cellular respiration; most organisms need oxygen for a single purpose: to release energy from food for use by cells.

There were roughly the same numbers of chloroplasts in every algae cell. The amount of oxygen produced by this region of the algae was roughly inversely proportional to the number of bacteria grouped at each wavelength (colour).

They reflect yellow and red light while absorbing blue-green light. Eating carrots helps your body absorb the carotenoids, which are pigments.

The blue (425-450 nm) and red ranges of visible light contain the best photosynthesis-friendly wavelengths (600–700 nm). The ideal light sources for photosynthesis should therefore ideally emit light in the blue and red ranges.

To know more about photosynthesis visit:

https://brainly.com/question/13915600

#SPJ4

Answer:

A cryptogram is a type of puzzle that consists of a short piece of encrypted text. Generally the cipher used to encrypt the text is simple enough that the cryptogram can be solved by hand. Substitution ciphers where each letter is replaced by a different letter or number are frequently used.

The 3-cell model, ENSO, and the MJO are interconnected phenomena that impact each other and play crucial roles in shaping regional and global climate patterns. Topography and ocean currents are two local influences on climate that can be more influential than a location's position in the 3-cell model. ENSO and the MJO do impact hurricane activity, with El Niño and the active phase of the MJO suppressing hurricane activity, while La Niña and the inactive phase of the MJO can enhance it.

The 3-cell model, El Niño Southern Oscillation (ENSO), and the Madden-Julian Oscillation (MJO) are all related to each other and impact each other in different ways.

1. The 3-cell model refers to the global atmospheric circulation pattern that divides the Earth into three cells: the Hadley cell, the Ferrel cell, and the Polar cell. These cells are responsible for the movement of air and transfer of heat from the equator to the poles. They play a significant role in determining regional climate patterns and wind systems.

2. El Niño Southern Oscillation (ENSO) is a climate pattern that occurs in the tropical Pacific Ocean. It involves the interaction between the ocean and the atmosphere, resulting in a warming or cooling of sea surface temperatures in the eastern tropical Pacific. This phenomenon has a major impact on weather patterns worldwide, affecting rainfall distribution and temperatures.

3. The Madden-Julian Oscillation (MJO) is an eastward moving disturbance that travels around the equator. It is characterized by a large-scale, eastward-moving area of enhanced and suppressed rainfall. The MJO has a significant influence on tropical weather and can affect precipitation and atmospheric circulation patterns in various regions.

These three phenomena are related in that they all involve large-scale atmospheric and oceanic processes. For example, during an El Niño event, the warming of sea surface temperatures in the eastern tropical Pacific can disrupt the normal trade winds and atmospheric circulation patterns associated with the 3-cell model. This disruption can, in turn, affect the behavior and strength of the MJO.

b) Two local influences on climate that can be more influential than a location's position in the 3-cell model are topography and ocean currents.

Topography refers to the physical features of the land, such as mountains, valleys, and coastlines. These features can greatly influence climate by affecting the distribution of precipitation, temperature, and wind patterns. For example, mountain ranges can block the flow of air masses, leading to differences in rainfall on the windward and leeward sides.

Ocean currents play a crucial role in climate regulation. They transport heat from the tropics to higher latitudes and influence regional temperature and precipitation patterns. For instance, the Gulf Stream, a warm ocean current, influences the climate of the eastern coast of the United States, making it warmer than other regions at similar latitudes.

c) Yes, ENSO and the MJO can impact hurricane activity.

During an El Niño event, the warming of sea surface temperatures in the eastern tropical Pacific can alter atmospheric conditions, leading to the suppression of hurricane activity in the Atlantic Basin. El Niño creates stronger wind shear, which makes it difficult for hurricanes to form and intensify. On the other hand, La Niña, the cold phase of ENSO, can enhance hurricane activity in the Atlantic.

The MJO can also influence hurricane activity. When the MJO is in its active phase, it can create more favorable conditions for tropical storm development, such as increased moisture and decreased wind shear. Conversely, during the inactive phase of the MJO, hurricane activity tends to be suppressed.

Learn more about 3-cell model here:-

https://brainly.com/question/28696327

#SPJ11

Liptin is the hormone made by adipose tissue that promotes satiety and a sense of fullness which reducing appetite.

Leptin is a hormone which is made up of adipose cells that helps to regulate energy balance by inhibiting hunger which in turn reduces fat storage in adipocytes.

So we can conclude that Liptin is the hormone made by adipose tissue that promotes satiety and a sense of fullness which reducing appetite.

Learn more about hormones here: https://brainly.com/question/4678959

The coaster has 69552Nm energy at the moment.

What do you calculate the energy?

Energy is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light.

Potential energy, P = mgh

P = wh

P = 966x72

P = 69552Nm

Hence, the coaster has 69552Nm energy at the moment.

Learn more about energy:

https://brainly.com/question/1932868

#SPJ1

A pedigree is able to support multiple inheritance patterns, and it is also possible that sex-linked dominant traits and autosomal dominant traits share similar pedigrees.

Genes on the X chromosome are altered to generate X-linked dominant traits. Fathers are unable to pass on X-linked qualities to their sons, which is a trait of X-linked inheritance.

Variants in genes on the X chromosome can also produce X-linked recessive diseases. Males have X-linked recessive diseases significantly more commonly than females since it is improbable that females will have two mutated copies of this gene.

Learn more about sex-linked dominant traits at: https://brainly.com/question/4173564

#SPJ1

The model represent the change in the DNA content of a cell during the cell cycle. The part of the model represents the S phase is phase II

What is cell cycle?

The cell cycle, also known as cell-division cycle, is described as the series of events that take place in a cell that cause it to divide into two daughter cells.

Before cell division and during the interphase, the cell DNA replicates. This event only occurs in the S phase, together with histones and other proteins synthesis.

In the attached image, we will notice a  graph showing the DNA content during the cell cycle, which is, how much DNA there is in the cell as the cycle goes on.

X axe ⇒ Phases ⇒   I, II, III phases

Y axe ⇒  Complete sets of DNA in the nucleus ⇒ 1 and 2 sets

The exponential growth occurs during the second phase, II. We can then  see how DNA content enhances from one single set to two sets of DNA.

Learn more about cell cycle at:  https://brainly.com/question/7196669

#SPJ1