which long reflex of the cephalic phase stimulates digestive activity in the stomach before food arrives? which long reflex of the cephalic phase stimulates digestive activity in the stomach before food arrives? salivary reflex vagal reflex receptive relaxation reflex deglutition reflex
Answers
Before food even arrives, the cephalic phase's vagal response reflex activates the stomach's digesting process.
What are the stomach's functions?Storing food and releasing it to the intestinal at a pace that allows the intestines to process it is the stomach's primary job. In order to expand the food's surface area in preparation for digestion, the stomach mixes and grinds the food into a finely split mucus.
What is the rate of stomach emptying?It takes food between six and eight hours to move though your stomach and intestine after you eat. After that, food moves into your colon for additional processing, water absorption, and other purposes.
To know more about stomach visit:
https://brainly.com/question/8836658
#SPJ4
Related Questions
________________________ The observable properties of an organism that are under genetic control.
Answers
The observable properties of an organism that are under genetic control are called phenotypes.
Phenotypes can include physical traits such as eye color, hair color, height, and weight, as well as behavioral traits such as intelligence, personality, and susceptibility to certain diseases. Phenotypes are determined by the interaction of an individual's genotype (genetic makeup) with environmental factors such as nutrition, exposure to toxins, and stress.
Phenotypes can be either continuous or discontinuous. Continuous phenotypes, such as height and weight, are controlled by multiple genes and exhibit a range of values. Discontinuous phenotypes, such as blood type and eye color, are controlled by a small number of genes and have distinct categories or types. Phenotypes can also be influenced by epigenetic factors, which can modify gene expression without changing the underlying DNA sequence. The study of phenotypes is important in fields such as genetics, evolutionary biology, and medicine.
Learn more about Phenotypes here:
https://brainly.com/question/30421521
#SPJ11
5. what are the major steps that occur during photosynthesis? what happens in each step (summarize briefly the key point(s))?
Answers
Photosynthesis is a complex process that can be summarized in two key steps: the light-dependent reactions and the light-independent reactions (also known as the Calvin cycle).
In the light-dependent reactions, light energy is converted into chemical energy in the form of ATP and NADPH. In the light-independent reactions, ATP and NADPH are used to convert carbon dioxide into glucose.
During the light-dependent reactions, light energy is absorbed by chlorophyll and other pigments in the chloroplasts of plant cells. This energy is used to split water molecules, releasing oxygen as a byproduct.
The energy from the absorbed light is then used to convert ADP (adenosine diphosphate) into ATP (adenosine triphosphate) and NADP+ (nicotinamide adenine dinucleotide phosphate) into NADPH. These energy-rich molecules, ATP and NADPH, are essential for the next step.
In the light-independent reactions, also known as the Calvin cycle, carbon dioxide enters the chloroplasts and combines with a five-carbon compound called RuBP (ribulose-1,5-bisphosphate). This process is facilitated by the enzyme RuBisCO (ribulose-1,5-bisphosphate carboxylase/oxygenase).
The resulting unstable six-carbon molecule quickly breaks down into two molecules of a three-carbon compound called PGA (phosphoglycerate). ATP and NADPH from the light-dependent reactions provide the energy and reducing power to convert PGA into PGAL(phosphoglyceraldehyde) through a series of enzymatic steps. Some PGAL molecules are then used to regenerate RuBP, while others combine to form glucose and other organic compounds.
Overall, photosynthesis is a remarkable process where plants capture light energy and convert it into chemical energy in the form of glucose, which serves as a fundamental energy source for both plants and other organisms in the food chain.
To learn more about Photosynthesis visit:
brainly.com/question/29775046
#SPJ11
What are the symptoms of Ruşts?
Answers
Answer:
Pale leaf spots eventually develop into spore-producing structures called pustules.
The pustules are found most commonly on the lower leaf surface and produce huge numbers of microscopic spores.
Pustules can be orange, yellow, brown, black or white.
In some cases there may be dozens of pustules on a single leaf.
Explanation:
What would happen to an ecosystem whose number of predators declined due to over hunting and disease?
Answers
Answer:
nah, too many dam.n coyotes
Answer:
The prey of that animal would increase in population and then end up killing itself over thousands of years by eating all of its sources of food, due to overpopulation.
Explanation:
Without predators to keep the other animals in check, the second-on-the-food chain animal would overrun the area and, due to so many of that animal's kind to feed, it would end up eating all of its food and eventually kill itself.
In a 200m race, athletes sprint the entire length. What type respiration is most likely occurs near the finish line.
Alcoholic fermentation
Photosynthesis
Aerobic respiration
Latic Acid Fermentation
Answers
Answer:
Running can take many forms, from a leisurely jog to an all-out sprint. But no matter what kind of running you do, your body needs to power itself through respiration. Lighter, long-distance running causes your body to use aerobic respiration, while more intense sprinting and interval training requires anaerobic respiration.
Explanation:
The activation energy is the energy that must be supplied so that molecules are able to interact with each other in a chemical reaction.
True or false.
Answers
Answer:
Activation energy is the energy required for a reaction to occur, and determines its rate.
Explanation:
True i think
The activation energy is the energy that is needed for the elements to undergo a reaction. This is the minimum amount of energy needed to initiate the reactions. The statement is true.
What is activation energy?Activation energy is the least amount of energy necessary to bring atoms or molecules into a state where they can undergo a chemical transformation or physical transport, which is known as the activation energy in chemistry.
According to Arrhenius's equation;
\(\rm k = Ae^{{\dfrac {-E_{a}}{RT}}}\)
k = rate constant
A = pre-exponential factor
Ea = activation energy (in the same units as R xT)
R = universal gas constant
T = absolute temperature (in Kelvin)
The activation energy is heat, and the reaction got thermal energy to activate the reaction.
Therefore, the statement is true.
To learn more about activation energy, refer to the link:
https://brainly.com/question/28384644
#SPJ2
The Big Bang theory states that _____.
Answers
Answer:
The big bang theory is states that universe began as just a single point, then expanded and stretched to grow as large as it is right now.
Hope this helps........
The coagulation of
plasma and
platelets is what
causes....
A. hemoglobin production
B. blood clotting
C. white blood cell
production
D. gas exchange
Answers
The coagulation of plasma and platelets is what causes blood clotting in organisms.
What is Clotting?This is the process in which blood changes to gel and helps to stop bleeding when someone gets hurt.
Blood clotting occurs when plasma and platelets coagulates to form a layer thereby stopping blood flow.
Read more about Clotting here https://brainly.com/question/1501224
Plant cells have large, round vacuoles they primarily use for -
A) water storage
B) energy production.
C) protein synthesis.
D) waster removal
Answers
Answer: the answer is water storage
Explanation: i just got it right
Explanation: energy production would be the mitochondria, Protein synthesis would be ribosomes and waste removal would be lysosomes
What would be the electrostatic force between two charges of equal magnitude if the distance between them is halved
Answers
Answer:
the forces between the two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them
Answer:
The force becomes 4 times as much when the distance is halved.
Explanation:
F1 = k*q1 * q2/r^2 = kq^2/r^2
F2 = kq^2/1 / (r/2)^2
Set up a proportion using F1/F2 as you reference.
Notice that you don't know any number that can be used in this equation. However k q^2 does not change as you move the two charges closer together. That being so, you can still show what happens to F1 and F2.
F1/F2 = 1/r^2 // 1/(r^2/4)
Take the denominator, invert the fraction and multiply. That creates another cancellation.
F1/F2 = 1/r^2 * r^2 /4 1
F1/F2 = r^2 // r^2/4 which allows you to cancel r^2
F1/F2 = 1/4 Now you need to interpret F1 and F2. Cross Multiply
4F1 = F2
How are viral diseases different from
other types of diseases?
A. there aren't medicines to cure a viral disease
B. viruses spread quickly
C. it infects healthy cells
D. it causes an immune response
Answers
According to the research, viruses spread quickly is the statement that describes how viral diseases differ from other types of diseases.
What is a virus?It is a biological entity that has the ability to self-replicate by using cellular machinery.
It requires the metabolic machinery of the invaded cell, in order to be able to replicate its genetic material and produce many copies of the original virus quickly, this process can harm the cell to the point of destroying it.
Therefore, we can conclude that according to the research, viruses spread quickly is the statement that describes how viral diseases differ from other types of diseases.
Learn more about viruses here: https://brainly.com/question/12190660
#SPJ1
Explain the relationship between an infectious disease and a contagious disease.
Please dont copy-paste from other sites!
Answers
Answer:
Contagious diseases are spread by contact, while infectious diseases are spread by infectious agents. Something "contagious" is by default "infectious" because contact exposed you to the infectious agent, but something infectious isn't always contagious. You can be infected with food poisoning, which itself is not contagious.
Explanation:
PLEASE HELP (answer which ever one of the few are listed that you can!)
1. Is it in passive or active transport that ions such as Na+ and K+ are being moved?
2. Are large molecules moved in active or passive transport?
3. Is it in active or passive transport where small nonpolar and polar molecules are being moved?
4. Do molecules pass between the phospholipids in active or passive transport?
5. Are molecules being pumped against or along the concentration gradient in active transport?
Answers
Answer:
Explanation:
Keep in mind active transport is always against the concentration gradient.
For active transport pumps or chaanel protiens needed so if these are pasaing through phospholipids than most probably it is passive transport.
Listen dear it is it is more important that movement is along or against the concentration gradient than what is moving if it is along concentration gradient than it is passive and if against gardient it is active
Simple to remember is energy ATP is used active other wise passive .
Gregor thinks that anthills are wider when the ground is muddy. he created the table below. is his investigation a scientific experiment
Answers
In the case above, His investigation is scientific but it is not an experiment because he does not manipulate variables.
What is the investigation?In controlled research, an experiment usually includes the manipulation of variables to respect the happening belongings. However, not all controlled studies need to be experiments.
In Gregor's case, if he is not maneuvering variables but alternatively making remarks and illustration ends based on those notes, welcome review can still be thought-out scientific, but not an experiment.
Learn more about experiment from
https://brainly.com/question/17274244
#SPJ1
See text below
Gregor thinks that anthills are wider when the ground is muddy. He creates the following table. Is Gregor’s investigation a scientific experiment?
His investigation is scientific but it is not an experiment because he does not manipulate variables.
His investigation is a scientific experiment because he is taking measurements to confirm a hypothesis.
His investigation is not scientific but it is an experiment because he is comparing evidence of multiple observations.
His investigation is not scientific and it is not an experiment because he is just making observations.
Which part of the plant do nematodes commonly attack?
Answers
Nematodes are microscopic, worm-like organisms that can cause damage to a variety of plant species. They are known to attack various parts of the plant, but the most common target is the roots.
Root-knot nematodes, for instance, are one of the most destructive plant parasites that infect and damage the roots of a wide range of plants. They cause the roots to develop knots, which interfere with the plant's ability to take up water and nutrients from the soil, leading to stunted growth, yellowing of leaves, and eventually death. Some nematodes also attack the leaves of plants, causing leaf galls, lesions, and other deformities, which can also lead to plant death. Overall, nematodes can cause significant damage to plants, leading to reduced crop yields and economic losses.
Learn more about nematodes: https://brainly.com/question/10642637
#SPJ11
new growth theory asserts that ________ will lead us to greater productivity and economic growth.
Answers
New growth theory asserts that technological innovation and knowledge accumulation will lead us to greater productivity and economic growth.
New growth theory is an economic perspective that focuses on the role of technological progress and knowledge in driving economic growth. It suggests that traditional factors such as capital and labor alone are not sufficient to explain long-term economic growth.
Instead, new growth theory emphasizes the importance of innovation, technological advancements, and the accumulation of knowledge in fostering productivity and economic development.
According to new growth theory, advancements in technology and the acquisition of knowledge lead to increased productivity, which in turn drives economic growth.
This can happen through various channels. For example, technological innovations can improve the efficiency of production processes, leading to higher output with the same amount of resources.
Additionally, new technologies can create entirely new industries and markets, stimulating economic activity and generating new opportunities for growth.
The theory highlights the significance of investment in research and development, education and training, and the dissemination of knowledge for sustained economic progress.
It suggests that policies aimed at promoting innovation, fostering learning, and creating an environment conducive to knowledge creation and diffusion can have positive impacts on economic growth.
In summary, new growth theory posits that advancements in technology and knowledge play a crucial role in driving productivity gains and long-term economic growth.
By focusing on innovation and the accumulation of knowledge, societies can foster an environment conducive to economic development and prosperity.
To know more about economic growth refer here
brainly.com/question/29621837#
#SPJ11
What is the natural source of energy in Mars and how is created, fission of fusion?
Answers
Answer:
Fission and fusion are two processes that alter the nucleus of an atom. Nuclear fission provides the energy in nuclear power plants and fusion is the source of the sun's energy. The use of fission in power plants can help conserve fossil fuels.
Explanation:
Which answer choice shows the correct order of primary succession after a volcanic eruption? A. A, C, D, B B. C, B, A, D C. C, A, D, B D. B, D, C, A
Answers
The question is incomplete as the figure is missing which has been attached.
Answer:
C,D,A,B
Explanation:
Ecological succession refers to the change in the species of a community evolved over time.
Primary succession is a type of ecological succession in which the mosses and lichens colonize a barren area like which is destructed by the volcanoes which convert the area into bare rock etc.
In the given question, image C shows that volcano is erupting after which the area is colonized by the species of Lichens and mosses which can grow on the rocks easily by attaching to them as shown in image D.
Then in image A, the mosses and lichens are removed by plants belonging to Pteridophytes like ferns and few bryophytes. Then, large trees belonging to gymnosperms and angiosperms will colonize the area as shown in figure B.
Thus, C, D, A, B is the correct answer.
Using Chargaff’s (Base Pairing) rule, write the complimentary DNA strand.
TTA CGT CAG GGG TAT CGA AAC
Answers
The complementary DNA strand of the given sequence, according to the Chargaff's rule is: AAT GCA GTC CCC ATA GCT TTG.
DNA is Deoxyribonucleic Acid. It is the genetic material of most of the living organisms. It is a double-stranded structure, consisting of sugar and phosphate backbone and the nitrogenous bases emerging out of it perpendicularly. the nitrogenous bases of both the strands form hydrogen bonds between them to give a staircase like appearance.
Chargaff's rule states that in any DNA structure, the amount of guanine equals the amount of cytosine and the amount of adenine equals the amount of thymine. This happens because adenine forms double hydrogen bonds with thymine and guanine forms triple hydrogen bonds with cytosine.
To know more about Chargaff's rule, here
brainly.com/question/14702890
#SPJ1
In an experiment, a scientist makes a radioactively labeled probe using yeast dna. she then discovers that the probe hybridizes to a small segment of dna isolated from a fruit fly. what can she conclude from her results?
Answers
Because DNA is a universal genetic code, which means that all living things use the same genetic code, this is possible. The correct answer is (B) a fruit fly might share at least one gene with a yeast cell.
The single-stranded DNA that is able to bind with the complementary DNA is known as a probe. The specific sequence and the specific genetic disease can both be identified with the help of the probe DNA. If the viral DNA probe binds to human DNA, it suggests that human DNA contains the viral gene and has a complementary sequence to the probe. The position of the probe in the genome can be determined by labeling it with the radioactive element.
To learn more about DNA here
https://brainly.com/question/264225
#SPJ4
Q- In an experiment, a scientist makes a radioactively labeled probe using yeast DNA. she then discovers that the probe hybridizes to a small segment of DNA isolated from a fruit fly. what can she conclude from her results?
a. the fruit fly recently ate yeast for dinner.
b. a fruit fly might share at least one gene with a yeast cell.
c. a fruit fly accidentally wandered into the test tube containing the probe.
d. the scientist is unlikely to become a tenured professor at her university.
What does a difference in color (Ranging from blue to black) tell us about the solution?
Help explain^!!
Answers
Answer:
It contains starch
Explanation:
you're on your own to explain
Quinn has a solution of acetic acid and water in one beaker. he carefully makes a second solution of acetic acid and water in a second beaker. these two solutions will have the same properties only if
Answers
The two solutions will have the same properties only if the ratio of amount of acetic acid and water is same.
Quinn has a solution of acetic acid and water in one beaker. Also second solution of acetic acid and water in a second beaker is made by Quinn. Acetic acid is a weak acid which reacts with the water in a reversible fashion to form hydronium and acetate ions. An exchange of proton takes place during this chemical reaction.
The two solutions will have the same properties only if the concentration of resulting solutions is same i.e., ratio of amount of acetic acid and water is same.
To know more about Acetic Acid refer to the link:
https://brainly.com/question/15231908
#SPJ9
What are the chambers of the mammalian heart
Answers
Answer:
Two atria and two ventricles make a total of 4 chambers.
Explanation:
after the process of mitosis, if the resulting cells have 48 chromosomes, how many did the parent cell have?
a. 48
b. 23
c. 92
d. 50
Answers
Answer:
B. 23
Explanation:
A cell that starts out with a diploid number of 46 chromosomes and ends up with a haploid number of 23 chromosomes. What process did this cell go through? answer choices ... Mitosis occurs in both body cells and sex cells while meiosis is only in sex cells. ... Daughter cells are produced with only half the chromosomes of the parent cell.
can we say food chain is a sequence of eating and being eaten to transfer energy
Answers
Answer:
Yeah, Its a cycle of energy.
Answer: food chain duhhhh
Do all cells secrete a glycocalyx?
Answers
Answer:
Yes, every cell in the body secrete a glycocalyx...
Good Luck!!
6. Charles Darwin is given credit for being the true father of the Theory of Natural Selection. Alfred
Wallace is also sometimes given partial credit for coming to the same conclusion without ever talking
with Charles Darwin. Which of the following statements is NOT part of the Darwin-Wallace Theory
of Natural Selection?
Answers
There is no statement that is NOT part of the Darwin-Wallace theory of natural selection.
What is Darwin-Wallace theory of natural selection?The Darwin-Wallace theory of natural selection includes the following four statements:
Individuals within a population exhibit variation in traits.Some trait variations are heritable, meaning they can be passed down from one generation to the next.More offspring are produced than can survive, leading to a struggle for existence.Individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring.Therefore, the answer to your question is that there is no statement that is NOT part of the Darwin-Wallace theory of natural selection.
Learn more about natural selection here: https://brainly.com/question/14874301
#SPJ1
Why are the prefixes “mono” “di”, and “poly and the base “saccharide” good to use when describing the three types of carbohydrates?
Answers
Answer:
“Mono” denotes one, “di” denotes two, and “poly” denotes a large number.
What is the significance of these words in defining the
three forms of sugars?
These terms are used because they depict how the
molecule appears.
The molecule's base unit is called a "saccharide."
Explanation:
-
You probably already know that some traits are purely genetic and others may be environmental. But most human traits reflect an interaction between genetic and environmental factors. Name some traits that might fall into this category and explain why you think they do.
Answers
Answer:Environmental factors often influence traits independently of genes. But not always.
Explanation:Sometimes the environment changes a gene—either its DNA sequence or its activity level.
What would be the most likely cause of this genetic variation?
Answers
The most likely causes of genetic variation are random mating, genetic mutation and genetic drift.
The changes which occur in the genetic sequence of the DNA of an individual are known as genetic variations. They play a very important role in the bringing about evolution and increasing the survival rate of organisms.
The most likely causes of genetic variation are random mating, genetic mutation and genetic drift. Genetic drift is a shift in the allelic frequency of a population which occurs due to a random chance. Random mating is the mating between two individuals which is not dictated by any social or genetic preference and genetic mutations are the change in the sequence of the DNA which might occur due to exposure to UV rays, chemicals or some errors in replication.
--The given question is incomplete, the complete question is
"What are the most likely causes of genetic variation?"--
To know more about genetic drift here
https://brainly.com/question/11919163
#SPJ4