In the living adult human, the esophagus is about 25 centimeters long, and most of its length is within the thorax, directly anterior to the vertebral bodies.
What is the esophagus?The esophagus is a like-tubular structure of the digestive system that serves to transport foods during digestion.
The esophagus is composed of muscular walls that link the pharynx structure with the stomach in the digestive system.
Moreover, the vertebral bodies are thick segment (bone) structures of the skeletal system.
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Which of the scenarios will most likely trigger an action potential? select all that apply.
The scenerios that will most likely trigger an action potential are :
Single excitatory postsynaptic potentials (EPSPs) arriving simultaneously at several different synapses (spatial summation) on the postsynaptic cell.Multiple excitatory postsynaptic potentials (EPSPs) arriving close in time at a single synapse (temporal summation) on the postsynaptic cell.What is an action potentialAn action potential involves the depolarization of a polarized membrane and this occurs when a neuron sends an impulse to an axon away from the body of a cell. The scenarios that most likely depicts the triggering of an action potential are :
single excitatory postsynaptic potentials (EPSPs) arriving simultaneously at several different synapses (spatial summation) on the postsynaptic cell. multiple excitatory postsynaptic potentials (EPSPs) arriving close in time at a single synapse (temporal summation) on the postsynaptic cell.Hence we can conclude that te scenarios are as listed above.
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Attached below are the missing options related to your question
Which of the following is true for a single, fixed pulley?
It provides negative mechanical advantage, making the load harder to lift but decreasing the distance
it must be lifted
It provides no mechanical advantage and does not change the direction of the applied force.
O It provides no mechanical advantage, just changes the direction of the applied force.
It provides positive mechanical advantage by making the load easier to lift at the expense of distance.
Answer:
It provides no mechanical advantage, just changes the direction of the applied force.
Explanation:
I got it right on the workbook
Select the correct answer.
A patient comes into a doctor's office because he has been experiencing diarrhea and vomiting for three days. Which of the following would indicate that antibiotics are an appropriate treatment for this patient?
A.
Diagnostic testing shows that the patient is infected with S. enteric bacteria.
B.
Diagnostic testing shows that the patient is running a fever of more than 101°F.
C.
The patient became ill after drinking water from a lake while he was camping.
D.
The patient has several family members that are exhibiting similar symptoms.
Answer:
A; Stool culture
Explanation:
Gastroenteritis is an inflammation that affects the small intestine and stomach. Although not related to the flu, it is sometimes called intestinal flu. It is caused by an infection that can be viral, fungal or bacterial, but the most frequent is that the causative agent is a virus. An inflammation is the body's reaction to tissue damage or infection. The affected area becomes red, hot, with an increased blood flow and is often painful.
The stool test is done to confirm the type of infection that is causing gastroenteritis. In the fecal sample, rapid tests for viruses, such as rotavirus or adenovirus, can be performed, as well as bacterial culture, which allows observation and evaluation under the microscope. In the fecal sample it is also possible to perform an immunological examination, which can reveal the eggs of parasites that may be causing the disease. For this reason, we can say that it is likely that the doctor shown in the question above will use the stool test to confirm the diagnosis.
Which of these disorders is when the pancreas does not produce enough insulin?.
Mutations in which of the following genes lead to transformations in the identity of entire body parts?
A) morphogens
B) segmentation genes
C) egg-polarity genes
D) homeotic genes
E) inducers
Answer:
D) homeotic genes
Explanation:
Every organism has a unique body pattern. Although specialized body structures, such as arms and legs, may be similar in makeup (both are made of muscle and bone), their shapes and details are different. While an embryo grows, arms and legs develop differently due to the actions of homeotic genes, which specify how structures develop in different segments of the body. A mutation in these genes would lead to drastic changes in body morphology
Which of the following best describes prokaryotes and eukaryotes?
O Prokaryotes have a nucleus and eukaryotes do not.
O Prokaryotes do not have a nucleus, eukaryotes have a nucleus.
Both have membrane-bound structures
Prokaryotes have membrane-bound structures and eukaryotes have free floating organelles
Answer:
Prokaryotes do not have a nucleus, eukaryotes have a nucleus.
Explanation:
The prokaryote cells do not have a nucleus whereas eukaryotic cells have distinct a nucleus.
Eukaryotes are creatures made up of cells with membrane-bound organelles and a nucleus that contains DNA in the manner of chromosomes. Thus, option B is correct.
What are eukaryotes and prokaryotes?Prokaryotes and eukaryotes are the two classes into which all living things may be divided based on the basic makeup of their cells.
Prokaryotes are creatures consisting of cells that don't have cell nuclei or any organelles that are enclosed in membranes. It follows that prokaryotes' DNA is not contained within a nucleus.
Eukaryotic organisms can have several cells or only one cell. Eukaryotes make up all animal life. Protists, fungi, and plants are examples of additional eukaryotes.
Therefore, Prokaryotes do not have a nucleus, eukaryotes have a nucleus.
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A large portion of precipitation in the rainforest occurs as a result of _______. a. perspiration b. respiration c. oxidation d. transpiration
Answer:
D
Explanation:
The function of carbohydrate supplements such as sports drinks and carbohydrate gels is:.
Answer:
Given that stores of precious muscle glycogen are limited, it’s natural to ask whether ingesting rapidly absorbed carbohydrate during exercise (eg drinks, gels and energy bars) can help offset the effects of muscle glycogen depletion – by providing working muscles with another source of glucose (the building blocks of glycogen).
Explanation:
30. The Asian country Georgia had a 2008 birthrate
of 11 and a death rate of 10. What was the PGR
of Georgia in 2008?
A. 1 percent
C. 1.1 percent
B. 0.11 percent
D. 11 percent
Answer: 1 percent
Explanation: Natural decrease occurs when death rate is greater than birth rate. This means that more deaths occur in a population than babies are born so population numbers decline. For several important causes of death, rising incomes and a variety of social programs have accompanied significant reductions in mortality. Higher incomes make possible the use of expensive medical technology and are correlated with less smoking than lower incomes.
Lucy volunteers at an animal shelter, and she takes care of an orange tabby cat and her kittens. Some of the kittens have orange markings, but some have gray markings. What units of genetic material determine how living things look?
A. traits
B. genes
C. variations
D. mutations
Answer:
genes c
Explanation:
Why is Gregor Mendel known as the “Father of Genetics”? {{Help Needed :{
A) He created new DNA for organisms
B) He experimented with plants to determine how traits passed from one generation to another
C) He was the first person to use the term genetics
D) He invented genetics
Answer:
B) he experimented with plants to determine how traits passed from one generation to another
Given the unit,identify the measurable property.
P= pressure exerted by the gas is atm, and V= total volume occupied by the gas is L.
What are measurable properties?Another characteristic of gas that can be measured is pressure. We are aware that the force a gas exerts on the container's walls per unit area in all directions is known as pressure. Additionally, any gas exerts pressure due to the kinetic energy of its molecules.
T= temperature of the gas is K
n= number of moles of the gas is mol
m³= The metric unit for measuring volume is the liter (L), and the cubic meter (m3)
pascal = newton per meter square.
Therefore, T stands for temperature, which is the unit used to express how hot something is. Degrees Fahrenheit (°F), degrees Celsius (°C), and Kelvin (K).
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Which of the following best describes a benefit of non-renewable energy use?
A) Scientific advances now allow us to synthesize fossil fuels making them renewable
B) Ecosystems will be healthier as dangerous chemicals in fossil fuels are extracted for use as energy
C) Removing these energy sources will stabilize the abiotic factors in the ecosystem making them more resilient to change
D) The infrastructure to distribute this energy is already in place, therefore less surrounding environments need to be disturbed
Answer:
No d is the right answer
Explanation:
the infrastructure to distribute this energy is already in place ,therefore less surrounding environment need to be disturbed.
What causes the red pigment to escape from beetroot cells?
Answer:
These pigments are a useful indicator of membrane fluidity as they are typically contained within the vacuole of intact beetroot cells. An increase in membrane fluidity will cause the pigment to leak out of the cell, and the amount of pigment can be measured simply by using a colorimeter.
Which of the following are true of fair trade?
1. Workers earn a fair wage
II. Workplace conditions are good
III. All production cost is paid for
IV. A trade deficit is created
A. I, II, III
B. II, III, IV
C. I only
Venn diagrams are used for comparing and contrasting topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show the characteristics that apply to only that topic. This Venn diagram is comparing longitudinal waves and transverse waves.
Where is the error in this Venn diagram?
“Parallel” and “Perpendicular” are switched.
The spring descriptions of motion are switched.
Particles travel along the wave in longitudinal waves.
Particles move long distances in transverse waves.
Answer:
The commonality between the two waves is that they; “Carry energy” and “Follow a pattern”.
A wave is defined as a disturbance along a medium that transfers energy. Mechanical waves require a material medium for propagation while electromagnetic waves do not require a material medium fro propagation.
At the center of the Venn diagram, there ought to be something that is common to both of the types of waves and that is the fact that they both “Carry energy” and “Follow a pattern”.
Hence, what is common is that all the waves carry energy.
Explanation:
Answer d
Explanation:
Which name is most accurate, a cougar, a puma, a mountain lion, or a panther?
Actually, all of these are common names for this animal. So why is it best for
scientists to use the scientific name from the standardized taxonomic system when
discussing Puma concolor?
All scientists will be using one name for mountain lions is why it is best for scientists to use the scientific name from the taxonomic system.
What is Taxonomic system?This involves the process of naming, defining and classifying organisms based on shared characteristics.
Mountain lions having just one name helps to prevent confusion and is why it is best to use the scientific name from the taxonomic system.
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Answer:
All scientists will be using the same name no matter where they live is your answer.
Explanation:
It is because it is a universal language among scientist (binomial nomenclature) It is important that everyone calls animals the same name (in science) so they dont get confuesed and waste time when they could be making discoveries.
What affect does global warming have on sea levels?.
Answer: Global warming is causing global mean sea level to rise in twwo ways. First, glaciers and ice sheets worldwide are melting adding water to the ocean. Second, the volume of the ocean is expanding as the water warms.
the analogy are are working on comparing viral and replication with the making a product in a factory. In what ways does the analogy not hold true?
The analogy does not hold true for the control of virus multiplying, in the viral replication with the making of product in a factory.
What is viral replication?The development of biological viruses throughout the infection process in the target host cells is known as viral replication. Before viruses replicate, they must first enter the cell. The virus keeps infecting new hosts by producing several copies of its DNA and packaging these copies.
Thus, the analogy does not hold true for the control of virus multiplying, in the viral replication with the making of product in a factory.
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How did Robert Hooke contribute to the cell theory
A He was the first to use the term “cell.”
B He was the first scientist to use a microscope.
C He stated that all animals are made up of cells.
D He stated that all cells arise from preexisting cells.
Robert Hooke contribute to the cell theory because he was the first person to use the term “cell.”
What is contribution of Robert Hooke to cell theory?Hooke observing cork through his microscope in which he saw tiny cavities which he described as cells. Hooke's discovery led to the foundation of cell theory.
So we can conclude that Robert Hooke contribute to the cell theory because he was the first person to use the term “cell.”
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In a relaxed skeletal muscle, actin is not chemically bound to.
Answer:
MYOSIN
Explanation:
are a superfamily of motor proteins best known for their roles in muscle contraction and in a wide range of other motility processes in eukaryotes. They are ATP-dependent and responsible for actin-based motility. The first myosin to be discovered was in 1864 by Wilhelm Kühne.
help pleaseeeee, can you please tell me where are The veins and The arteries?
thanks!
Answer: the veins are blue and the arteries are red . What is colored in blue in the picture is the veins .
Explanation: veins are closer to the surface of the body and arteries are located deep inside your muscles . Hope this helps you . Please give brainliest . Thanks .
Evidence of which structure or characteristic would be most surprising to find among fossils of the ediacaran fauna?.
Answer:
The formation of anterior and posterior (head and tail) ends promoted a phenomenon called cephalization.
Explanation:
Examine the food web below. Which organisms in the food web are primary consumers? Oak Tree Caterpillar Eagle Mountain Lion Aphid Sparrow For Dragonfly Trout Bear Minnow K Algae
Answer:
Caterpillar, Aphid, and Minnow
Explanation:
A primary consumer is an herbivore that feeds on plants
I will mark brainiest
Answer:
A
Explanation:
Not written in good English, and uses the comparative or superlative adjective wrongly.
Answer:
A.
The correction to A. is Georgia was the youngest of the choir. because it uses the word most which is not nessescary to put there unless we are saying something like this example, That is the most retorical question I've ever heard, Anna.
Environmental Impact Assessment #1
5
Considering the country's resources and its goals (for example, to minimize CO2 production), which of the following would be the most
environmentally sound energy choice for them as they build new power plants for more electricity generation?
O Anthracite coal, because they already know how to operate a plant that runs on it and they can buy coal from their neighbors.
O Hydroelectric, because it produces no CO2 and they have many rivers of their own that they could dam.
Wood, because
they have lots of forests which are potentially renewable and people could make money by cutting wood and selling it to the
power company.
Natural gas, because it produces less CO2 than any other fuel and they could purchase it from neighboring countries,
The country's resources and goals depend on the nature of electricity generation, CO2 emission, solar production, development of dams, etc.
What do you mean by Resources?Resources may be defined as useful or valuable possession or the quality of a country that are consumed as stocks.
Considering the country's resources and its goals, the most environmentally sound energy choice for them as they build new power plants for more electricity generation is that it produces no CO2 and they have many rivers of their own that they could dam.
Therefore, it is well described above.
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Which of the choices below is not an essential role of salts in the body?.
Which of the following questions can be answered by science?
1. Why is land use more important than water use?
II. Why do human activities affect land?
III. What factors influence food likes and dislikes?
The first question can be answered by science due to its logical features and characteristics of the question.
Why is land use more important than water use?The above question is answered through science because this is a logical question and we know that science answers questions logically and experimentation.
So we can conclude that the first question can be answered by science.
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What kingdom is the organism in?
The kingdom of the organism in this scenario is referred to as a protist because it contains certain features such as being unicellular and possessing what we call DNA in its nucleus etc and is denoted as option D.
What is a Protist?This is classified as an eukaryotic organism which does not belong to the animal, plant, or fungus family. it is however unicellular and has the ability to produce food on their own which is responsible for their survival in the ecosystem.
These organisms produce food through the process known as photosynthesis and examples include algae, diatoms etc. They also have DNA enclosed in their nucleus which is why they are referred as being eukaryotic.
This is therefore the reason why protist was chosen as the most appropriate choice.
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The openings of the two ureters and the urethra form the boundaries of a smooth area called the __________ on the floor of the urinary bladder.
Answer:
The answer is: Trigone.