The passage of a bolus of food down the esophagus is assisted by what? MULTIPLE CHOICE.
A. Enzymes and acids
B. The lower esophageal sphincter
C. Peristalsis
D. The pyloric sphincter
Answers
Answer:
the lower esophageal sphincter
Explanation:
Related Questions
50 POINTS AD BRAINLIEST FOR RIGHT ANSWER. IF YOU STEAL MY POINTS I WILL HUNT YOU DOWN
When watering the yard, a student made on observation about the height and position of blades of grass in the areas that get different amounts of sunlight. When conducting an experiment to answer their question of "Why do the grass blades grow away from the side in the shade?" the student gathered the following data:
The only difference between the control group and the experimental group was light conditions. The control group was provided full light, while the experimental group was shaded on one side. The diagrams show the average heights and positions of blades of grass in the experiment
Explain, with detail, why the grass tips of the experimental group bent toward the light. Include the following terms in your explanation: phototropism, hormone, and shoot system.
Answers
Answer:
The shoot of a grass seedling is enclosed in a sheath called the coleoptile, which grows straight upward if kept in the dark or illuminated uniformly from all sides. If it is illuminated from one side, it will curve toward the light as a result of differential growth of cells on opposite sides of the coleoptile.
Explanation: HOPE IT HELPS
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Answer:
Can you smell what the rock is cooking
Explanation:
The shoot of a grass seedling is enclosed in a sheath called the coleoptile, which grows straight upward if kept in the dark or illuminated uniformly from all sides. If it is illuminated from one side, it will curve toward the light as a result of differential growth of cells on opposite sides of the coleoptile.
The __________ and __________ of a cell can sometimes tell you about its job.
Answers
Answer: The Shape/Structure and The nucleus
Explanation: Hope this Helps!
Consider the following two statements about succession.
Student 1:
Matthew - As succession begins, communities tend to be dominated by mostly K-selected species. As succession continues, r-selected species tend to compete better and therefore become more and more common.
Student 2:
Iman - As succession begins, communities tend to be dominated by mostly r-selected species. As succession continues, K-selected species tend to compete better and therefore become more and more common.
Which student is correct?
a. Provide a rationale for your answer (2 marks)
b. Provide a specific example of succession which includes at least one example of an r-selected and one example of a K-selected species. (1 mark)
Note - No marks are earned by simply agreeing with either Matthew or Iman
Answers
Sister chromatids separate during
O metaphase
O anaphase
O telophase
O prophase
Answers
Answer:
metaphase
Explanation:
Metaphase leads to anaphase, during which each chromosome's sister chromatids separate and move to opposite poles of the cell. Enzymatic breakdown of cohesin — which linked the sister chromatids together during prophase — causes this separation to occur.
Some rocks are formed from _______ that erupts from volcanoes as lava.
(Fill in the blank and PLEASE DO NOT COPY AND PASTE FROM THE INTERNET)
Answers
Answer:
magma
Explanation:
it comes from volcano
what is called renewable energy and nonrenewable energy
Answers
Answer:
Resources are characterized as renewable or nonrenewable; a renewable resource can replenish itself at the rate it is used, while a nonrenewable resource has a limited supply.
Explanation:
Renewable resources include timber, wind, and solar while nonrenewable resources include coal and natural gas.
Answer:
The type of energy which can be used again and again is called renewable energy.
The energy which cannot be used again and again is called non renewable energy.
Property of water that makes transpiration to occur
Answers
Answer:
cohesion
Explanation:
One of water's most distinctive properties is cohesion—that is, the tendency of water molecules to "stick" to one another. In plants, this cohesion results in columns of water that stretch through the plant's xylem, from the roots all the way to the leaves.
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What is the first step in building a solar system from a solar nebula?
Answers
Answer:
An explosion disturbs the gas and dust in the nebula.
Explanation:
hope it helps
What are some sources of CO2?
Answers
Answer:
There are both natural and human sources of carbon dioxide emissions. Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.
Explanation:
Answer:
burning coal or other products
animals breathing
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What is a characteristic of a biome?
What are some examples of a biome?
What are some non-examples of a biome?
Answers
Answer:
1.Biomes are large-scale environments that are distinguished by characteristic temperature ranges and amounts of precipitation.
2.There are five major types of biomes: aquatic, grassland, forest, desert, and tundra, though some of these biomes can be further divided into more specific categories, such as freshwater, marine, savanna, tropical rainforest, temperate rainforest, and taiga.
3.Non examples of biome include houses, furniture, vehicles, trains, factories, pencils etc.
Age estimation in juveniles can be performed using all of the following indicators except: A. auricular surface changes B. dental development C. fusion of epiphyses D. appearance of primary ossification centers E. appearance of secondary ossification centers
Answers
Age estimation in juveniles can be performed using all of the following indicators except auricular surface changes.
Auricular surface changes are a method of age estimation that is used in adults, not juveniles. This method involves examining the surface of the ilium bone in the hip joint, which undergoes distinct changes as a person ages.
Dental development, fusion of epiphyses, appearance of primary ossification centers, and appearance of secondary ossification centers are all indicators that can be used to estimate the age of a juvenile. Dental development, for example, involves observing the eruption and development of teeth, while fusion of epiphyses involves the fusion of the growth plates at the ends of bones. The appearance of primary and secondary ossification centers also provides information about the timing of skeletal development in juveniles.
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Age estimation in juveniles can be performed using all of the following indicators except auricular surface changes. The correct option is A.
Age estimation in juveniles is a complex process that requires the analysis of various indicators.
The indicators used in age estimation include auricular surface changes, dental development, fusion of epiphyses, the appearance of primary ossification centers, and the appearance of secondary ossification centers.
However, one of these indicators is not used in age estimation, and that is auricular surface changes.
The auricular surface changes are used in adult age estimation, but not in juveniles.
Dental development is the most commonly used indicator in age estimation in juveniles, followed by the fusion of epiphyses and the appearance of primary and secondary ossification centers.
It is important to note that age estimation is not an exact science, and the results should always be interpreted with caution.
Therefore, it is recommended to use multiple indicators and to consider other factors, such as the individual's medical history and developmental milestones, when estimating the age of juveniles.
The correct option is A, auricular surface changes.
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Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens
Answers
Answer:
Explanation:
Molecules within a liquid are pulled in all directions by intermolecular forces; there is no tendency for them to be pulled in any one way. However, molecules at the surface are pulled downward and sideways by other molecules, but not upward away from the surface. These intermolecular attractions thus tend to pull the molecules into the liquid and cause the surface to tighten like an elastic film.
A measure of the elastic force in the surface of a liquid is surface tension. The surface tension is the amount of energy required to stretch or increase the surface of a liquid by a unit area. Surface tension enables small insects, like the water strider, to “walk” on water.
20. Does facilitated diffusion require energy for the cell?
Answers
Answer: no
Explanation: The solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. This process is called passive transport or facilitated diffusion, and does not require energy.
An increase in carbon dioxide in the atmosphere will MOST likely affect which type earth activity?
Answers
An increase in carbon dioxide in the atmosphere will most likely affect a type earth activity called cave formation.
How do cave form?The carbon dioxide (CO2) in the earth atmosphere is increasing as a result of the anthropogenic activities such as deforestation, burning of the fossil fuels.
Carbon dioxide is known to be a greenhouse gas that is released by living organisms as a waste product of cellular respiration.
The carbon dioxide in the atmosphere gets mixed with the rain water which seeps into the soil. This results in the accumulation of carbonates (CO3²-) in the soil as limestone.
The cave of limestone is formed by the groundwater because limestone is a soft material which get easily dissolves in the water.
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What is aquatic science and what can we learn from it
Answers
Aquatic science is the interdisciplinary study of freshwater and marine ecosystems, their physical, chemical, biological, and geomorphological properties, and the interactions between these systems and human activities. By studying aquatic science, we can learn a lot about the world and its ecosystems.
What is the aim of aquatic science?The goal of aquatic science is to understand the complex relationships between the physical, chemical, biological, and geological processes that control the behavior and functioning of aquatic systems.
We can gain a better understanding of the processes that regulate the Earth's water cycle, the ways in which pollutants and other human activities affect freshwater and marine ecosystems, and the impacts of climate change on these systems. Aquatic science can also provide valuable information about the biodiversity and distribution of aquatic species, and help us to understand how these species interact with one another and with their environment.
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1, 2, and 3 please!!!
Answers
Answer:
Hey there!
A beaker can not be used for measuring the volume of a liquid because it does not have precise measuring lines.
The best instrument to measure volume in the lab is a graduated cylinder.
D would be the correct answer for question 3. You only need a hot plate, a beaker, and a beaker tong to heat a reaction in a beaker.
Let me know if this helps :)
p is the principal (starting amount) True or false
Answers
Answer:
what would p be the principal of? is there more to the question?
Explanation:
What is work?
A. The amount of force applied over time
B. The product of a force moving something over a distance
C. The total amount of time it takes to move something
O D. The amount of power used
Answers
Answer:it’s A
Explanation:
what is the triangle of auscultation?
Answers
The triangle of auscultation is an area on the chest used to listen to heart sounds using a stethoscope. It is defined by three points: the right clavicle (collarbone), the right second rib, and the sternum (breastbone).
The triangle of auscultation is commonly used to listen to the second and third heart sounds, which are important indicators of heart function.
The second heart sound is heard as a "lub" and is produced by the closure of the tricuspid and mitral valves in the heart. The third heart sound is heard as a "dub" and is produced by the sudden filling of the ventricles with blood after they have contracted. Abnormal heart sounds can indicate various heart conditions, including valve problems, heart disease, and heart failure.
Auscultation of the triangle of auscultation is an important diagnostic tool for healthcare providers in the assessment of heart function. In conjunction with other tests, such as an electrocardiogram (ECG) or echocardiogram, it helps in the diagnosis of heart problems and the selection of appropriate treatments. In summary, the triangle of auscultation is a key area for the assessment of heart sounds and plays an important role in the diagnosis of heart problems.
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Sodium deficiency hampers reabsorption of kidney shows a thick-walled vessel with renal corpuscles scattered in the tissue on one side of the vessel but not on the other side. What vessel is this? A. glucose B. albumin C. creatinine D. water A. Interlobar artery B. Cortical radiate artery C. Cortical radiate vein
Answers
Sodium deficiency can inhibit renal reabsorption by thick-walled vessels and renal blood cells scattered throughout the tissues. The ship was called D. Air
What is sodium deficiency?A deficiency of sodium in the blood is also known as hyponatremia. Hyponatremia occurs when the composition of water and sodium is not balanced. Where there is too much water or not enough sodium in the blood. Typically, a person's sodium level should be between 135 and 145 milliequivalents per liter (mEq/L). So that sodium deficiency can inhibit kidney reabsorption to remove excess water levels in the body.
In hyponatremia, sodium levels in the blood are less than they should be. This results in increased water levels in the body and makes the body's cells swell.
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Bacteria can reproduce quickly by means of binary fission. Because of this, after binary fission responses.
Answers
Bacteria can quickly divide by means of binary fission. Because of this, following binary fission reactions, every child will have the same genetic makeup. Option C provides the right response.
The most common method of cell division in unicellular organisms is binary fission. It closely resembles the mitotic division that occurs in multicellular animals. DNA is copied when bacteria divide by binary fission.
A particular asexual mechanism of reproduction is binary fission. In binary fission, the parent cell's nucleus and cytoplasm divide after which two new daughter cells are created. It is observed in single-celled creatures including amoebas, paramecium, and others.
Because DNA replication and DNA separation occur simultaneously during binary fission, the newly created cells are identical to one another.
Complete question:
Bacteria can reproduce quickly by means of binary fission. Because of this, after binary fission
A) the offspring will have traits of both parents.
B) there is genetic variation among the offspring.
C) all the offspring will be genetically identical.
D) none of the offspring will be genetically like the parents.
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All of the following are characteristic of the cnidarians except ___________________.
muscle tissue derived from mesoderm
a motile form called the medusa
a sessile form called the polyp
a gastrovascular cavity
Answers
Answer:
a sessile form called the polyp
Select from the drop-down menu to correctly complete the statement.
Tissues combine to form
A-cells
B-an organ system
C-an organism
D-organs
Answers
Answer:
D. Organs
Explanation:
Tissues combine to form organs. This is because they are combining to create one thing that is more complex than an individual tissue cell. Organs can then go on to make up organ systems.
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In which lower layer of the ocean do anglerfish live?
a.) hadeopelagic
b.) abyssopelagic
c.) mesopelagic
Answers
Answer:
they live in bathypelagic layer. is there another answer choice that says that?
Explanation:
Answer: abyssopelagic
Explanation:
place these events in the correct order as they would occur in the production of atp fueled by the energy collected by photosystem ii. begin with the first event to occur at the top of the list.
Answers
In photosystem II Electrons pass along the ETC Hydrogen ion gradient is established Hydrogen ions flow through ATP synthase.
Photosystem II is the first membrane protein complex in oxygenic photosynthetic organisms in nature. It produces atmospheric oxygen to catalyze the photo-oxidation of water by using light energy. It oxidizes two molecules of water into one molecule of molecular oxygen.
Photosystem II generate ATP in the light reactions of photosynthesis. Electrons are transferred sequentially between the two photosystems, with photosystem I acting to generate NADPH and photosystem II acting to generate ATP. PSII comes first in the path of electron flow, but it is named as second because it was discovered after PSI.
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Which organisms are not examples of an adaptive radiation?A. Mammals and reptiles in the post-dinosaur ageB. Honeycreeper songbirds of the Hawaiian islandsC. Horses and deer in the post-dinosaur ageD. Anolis lizards of the Caribbean
Answers
Organisms that are not examples of an adaptive radiation are those that did not undergo rapid speciation and diversification to fill ecological niches in a relatively short period of time. Based on this definition, option A (mammals and reptiles in the post-dinosaur age) and option C (horses and deer in the post-dinosaur age) are not examples of adaptive radiations as they evolved over a longer period of time and did not experience a sudden burst of diversification.
Option B (honeycreeper songbirds of the Hawaiian islands) and option D (Anolis lizards of the Caribbean) are examples of adaptive radiations as they underwent rapid diversification to fill ecological niches in their respective island habitats.
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Question 6 An atom has six protons. What is the maximum number of double covalent bonds it can form? OAZ O 8.1 Осо OD.4
Answers
Answer: the maximum number of double covalent bonds it can form is 2
Explanation:
An atom with six protons is a carbon atom (C). Carbon has four valence electrons, so it can form a maximum of four covalent bonds. Therefore, the maximum number of double covalent bonds it can form is 2.
Bacteria divide by a type of ______________________ called ____________________.
Answers
Bacteria divide by a type of asexual reproduction called binary fission.
In the field of science, asexual reproduction can be described as a reproduction process that involves a single parent. The offspring produced are identical to the parent cell in asexual reproduction because this type of reproduction occurs through the process of mitotic division.
A bacterial cell divides into two by the process of binary fission. Before division, the bacterial cell makes a copy of its genetic material. After a copy of the genetic material is made, the bacteria divide into two equal halves hence resulting in the formation of two daughter cells. As the genetic material is the same, the two daughter cells are identical copies.
Hence, bacteria divide by the asexual process called binary fission.
Although a part of your question is missing, you might be referring to this question:
Bacteria divide by a type of ______________________ called ____________________.
a. sexual reproduction; binary fission
b. asexual reproduction; binary fission
c. asexual reproduction; elongation
d. sexual reproduction; replication
e. asexual reproduction; replication
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Which of the following is a correct statement?
A: Arteries carry blood to the heart, veins away from the heart
B: Arteries and veins carry blood to the heart
C: Arteries and veins carry blood away from the heart
D: Arteries carry blood away from the heart, veins to the heart
Answers
Answer:
D is correct hope it helps
The form in which the chemical energy is stored in cells during photosynthesis is?
A. Products
B. Chloroplasts
C. Reactants
D. Glucose
Answers
Answer:
Reactants
Explanation:
Hope this helps