the diameter of bronchioles varies under the control of neurons, which cause the diameter to .
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The diameter of bronchioles can vary due to the stimulation of neurons, which can cause bronchioles to either constrict or dilate.
Bronchoconstriction is the tightening of the airways and occurs when the sympathetic nervous system is activated. This causes a narrowing of the airways and a decrease in the diameter of the bronchioles. On the other hand, bronchodilation is the widening of the airways and occurs when the parasympathetic nervous system is activated. This causes an increase in the diameter of the bronchioles.
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Related Questions
*30 POINTS* PLZ HELP
The following list of events happens during meiosis:
Prophase I: Crossing over between homologous chromosomes occurs.
Metaphase I: Tetrads line up at the metaphase plate.
Anaphase I: Tetrads are separated.
Telophase I: Nuclear envelopes reform around the separated chromosomes.
Prophase II: Chromosomes condense.
Metaphase II: Chromosomes line up at metaphase plate.
Anaphase II: Sister chromatids separate into daughter chromosomes.
Telophase II: Nuclear envelopes reform around the daughter chromosomes.
Identify the answer choice that correctly lists the events from above that lead to new genetic combinations in the gametes.
(1 point)
1, 2, and 5
5 and 6
5, 6, and 7
1 and 2
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Answer:
let me take the test i will tell you after
Explanation:
What human body system does Zygomycota attack
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Answer:
I beleive that it is
The condition may affect the gastrointestinal tract or the skin. In non-trauma cases, it usually begins in the nose and paranasal sinuses and is one of the most rapidly spreading fungal infections in humans. Common symptoms include thrombosis and tissue necrosis.
Hope it helps!✌
Explanation:
Answer:
it's fungus typically inhaled or ingested and could potentially affect any body system
true or false along with natural selection,genetic drift has profoundly affected the evolution of human traits throughout our species history
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Answer:
yes
Explanation:
due to drift / variation human has been able to atttain high and advanced level of intelligence and development
is the sequence of a dna strand is AAGCCA what are the bases on its complementary strand
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A blue whale is louder than any animal around.
Go in search of a thing that also makes a loud sound.
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The correct answer to this open question is the following.
A blue whale is louder than any animal around.
Go in search of a thing that also makes a loud sound.
Well, talking abound animals sounds, what about the roaring of a lion or a tiger. That is loud too, and scary.
If we do not want to refer to an animal sound, we could talk about the sound of the turbines of an airplane. That is loud. Indeed, floor airport operators have to use earplugs or other kinds of protection to avoid ear damage in the workplace.
The sounds of machines in many industries and factories are also very loud.
3. Which plants are usually the first to grow during secondary succession?
A ferns
Blichens
Cweeds
D trees
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Answer:
ferns
Explanation:
these are alsi known as conifers which require a great amount if light
Im not a science student just trying beans I guess
___________________ activities and strategies influences where we live, what we wear, how we conduct business, and how we spend our time and money
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All echinoderms have an external skeleton composed of porous plates of the mineral _______________.
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All echinoderms have an external skeleton composed of porous plates of the mineral calcium carbonate.
What are echinoderms?Echinoderms are spiny-skinned marine animals with an endoskeleton that is found in all of the world's oceans. They are a diverse group of marine animals with over 7,000 species that are divided into five groups: sea urchins, starfish, brittle stars, sea cucumbers, and crinoids.
An external skeleton is a rigid framework that surrounds the body of an animal, providing it with shape and support. In the case of echinoderms, their external skeletons are made up of porous plates of the mineral calcium carbonate. These plates are covered in spines and other structures that help to protect the animal from predators, as well as providing it with a means of locomotion.
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The illustration shows a pedigree with an autosomal recessive mutation.
What is the possibility that the male in the F 2 generation will express the mutation?
70%
25%
100%
50%
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Answer:
50%
Explanation:
Sana makatulong
Semipermeable cell membranes are made of phospholipids that form a bilayer. What major benefit does this arrangement of the membrane provide to the cell?.
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Answer: Phospholipid bilayers are critical components of cell membranes. The lipid bilayer acts as a barrier to the passage of molecules and ions into and out of the cell. However, an important function of the cell membrane is to allow selective passage of certain substances into and out of cells.
Explanation:
Of the following statements, WILL MARK YOU BRAINLIEST!!
which is not part of the current rules of animal research?
A. The research must have a clear, scientific purpose.
B. The research must provide humane care and housing.
C. The research must ensure the least amount of suffering possible.
D. The research must use animals whenever possible.
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Answer:
Answer D
Explanation:
Because for animal research, you want to use animals as little as possible
Answer:
D: The research must use animals whenever possible.
Explanation:
I got it right on edge
62.5 milligrams into grams
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Explanation:
62.5 = 0.0625 g
your answer is like this1. How do biotechnologies such as hybridization and the introduction of mutations
increase genetic variation?
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Answer: Interbreeding (hybridization) and inducing mutations are ways to manipulate the genetic makeup of individuals.
Explanation:
Two species of barkflies (Order Psocoptera) allopatrically speciated from each other 200,000 years ago when their island habitat split into two islands with rising sea levels. The barkflies on Island 1 specialized in feeding on a toxic lichen species, while barkflies on Island 2 fed on fibrous algae that were difficult to process and digest. Once sea levels fell, the islands once again became one continuous land mass, and the barkfly species began to intermingle. Hybrids between the species were generally incapable of eating either the toxic lichen or the fibrous algae. This meant that hybrid individuals were heavily selected against, and each parent species began to evolve adaptations to the genitalia to avoid breeding with the opposing species. Thus, the two species remained genetically isolated despite re-contact. This is an example of:
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This is an example of Reproductive isolation through mechanical or genitalia-based isolation.
Reproductive isolation mechanisms are important in the process of speciation because they inhibit gene flow across populations or species.
It shows how modifications in the genitalia of two bark fly species evolved to prevent hybridization and preserve reproductive isolation even after re-contact.
In this scenario, the bark fly species adapted their genitalia to ensure mating occurs only within their respective populations, therefore maintaining their genetic isolation.
Therefore, the mechanism is reproductive isolation.
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What happens to calories that are not used for energy by the body right away?
A. They are stored as fat.
B. They are absorbed by the liver.
C. They are eliminated as waste.
D. They stay dormant in the blood stream.
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Which of the following is formed when a group of tissues works together to perform a common function ?
A. Body
B. Organ
C. Organ system
D. Braun
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Answer: The answer is A
Explanation: Research and Edu labs
Natural selection can, through common descent, produce closely related species that have similarities due to their shared ancestry. Natural selection can also, through convergent evolution, lead to distantly related species appearing very similar. Identify which examples reflect common descent and which reflect convergence.
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Complete Question:
Natural selection can, through common descent, produce closely related species that have similarities due to their shared ancestry. Natural selection can also, through convergent evolution, lead to distantly related species appearing very similar. Identify which examples reflect common descent and which reflect convergence.
Tree-dwelling primates have prehensile tails for gripping branches. Tree-dwelling opossums also have prehensile tails. Many birds and some kinds of bats that feed on plant nectar all have long flexible tongues. Primates use opposable thumbs to help climb. New World monkeys also have prehensile tails, but Old World monkeys do not. Marsupial mammals throughout Australia show a wide diversity of forms that reflect the habitats in which they live. Hawaiian honeycreepers, with their elongated, nectar-sipping bills, all evolved from a finch-like ancestor.Answer and Explanation:
Tree-dwelling primates have prehensile tails for gripping branches. Considering recent ancestors, the prehensile tail trait can be considered as a convergence example that occurred among different groups. But we can also think about it as a common descent if we consider the farthest primates ancestor. Although still controversial, Plesidiapsi might be considered a common ancestor of primates, that evolved from a ree-dwelling mammal with a long tail. It is believed that this animal used to live in trees. Tree-dwelling opossums also have prehensile tails. Convergence. Many birds and some kinds of bats that feed on plant nectar all have long flexible tongues. Convergence. These are two groups that are very separated from each other, and they developed different traits according to their needs separately. Some of the species of these two groups adapted to feed on the same plant so they needed to develop the same characteristic to obtain nectar.Primates use opposable thumbs to help climb. New World monkeys also have prehensile tails, but Old World monkeys do not. Common descent . The common ancestor had a prehensile tail, some of the descendants developed the tail but some others did not.Marsupial mammals throughout Australia show a wide diversity of forms that reflect the habitats in which they live. Common descent . Hawaiian honeycreepers, with their elongated, nectar-sipping bills, all evolved from a finch-like ancestor. Common descent . They all look like the finch-like ancestor.I just need number one I need to fill in the blanks
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How do electronegativity, polarity, and ph all relate and effect each other? I know moderators, you will be reported if you give a link or wasteful answer.
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Answer:Electrons in a polar covalent bond are shifted toward the more electronegative atom; thus, the more electronegative atom is the one with the partial negative charge. The greater the difference in electronegativity, the more polarized the electron distribution and the larger the partial charges of the atoms.
Explanation:
Suppose that a patient is diagnosed with a new disease caused by the buildup of waste material in the body’s cells. Which organelle is most likely malfunctioning in the patient’s cells?
A.Golgi apparatus
B. lysosome
C.ribosome
D.endoplasmic reticulum
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hurry due in 5 min plz help
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In general, the brains of younger mammals exhibit greater __________ when compared to the brains of older mammals: group of answer choices
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In general, the brains of younger mammals exhibit greater neurons when compared to the brains of older mammals.
Brain is the regulatory organ of the complete body. It directs and regulates all the activities of the body. The brain is divided into left and right hemispheres. The right hemisphere controls left side of the body whereas the left hemisphere controls right side of the body.
Neurons are the cells that mediate the transport of signals across the whole body. They are also called nerve cells. Neurons are the largest cell of the body. The structure of the cell comprises of a cell body, emerging out of it are various projections called dendrites. A long axon emerges from one side and ends in axon terminal.
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5-Coat colour in cattle is controlled by two codominant alleles. The genotype CRCR results in cattle with a red coloured coat. The genotype CWCW results in cattle with a white coloured coat. The genotype CRCW results in a roan coat; these cattle have a mixture of red hairs and white hairs in their coat. A mating occurs between a red cow and a roan bull. What is the expected ratio of coat colour in the offspring? (1mark)A) 50% red, 50% whiteB) 100% redC) 50% red, 50% roanD) 100% roan
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In codominance we have the following fact:
If an offspring phenotype is heterozygous, the offspring will exhibit both traits from the parents.
Let us denote by RR the genotype that results in cattle with a red-colored coat and by WW the genotype that results in cattle with a white-colored coat. Then, RW results in a roan coat. Now, if we cross a red cow and a roan bull, we have the following Punnett square:
This means that
1. 50% of the offspring presents the genotype RR (cattle with a red-colored coat)
2. 50% of the offspring presents the genotype RW (roan coat)
for a ratio of 2:2.
We can conclude that the correct answer is:
Answer:C) 50% red, 50% roan
do cells produce waste
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Help!
For which reason are various countries reluctant to make firm commitments to make deep reductions in greenhouse gases?
A. They believe reducing greenhouse gases will reduce the standard of
living in their countries.
B. Most of the emissions come from just a few rich nations.
C. They believe reducing greenhouse gases will not make a difference on
climate change.
D. all of the above
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What do scientists study to see the genetic changes that occur through generations?
A.Overall appearance
B.Phenotype
C.Genotype
D.The species overall demeanor
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Which of the following does not describe a source of greenhouse gases?
Steam of fossil fuels
Burning of fossil fuels
Freezing of permafrost
Emissions from landfills
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Answer:
i think its C) Freezing of perma frost
Explanation:
The option that does not describe a source of greenhouse gases is the freezing of glaciers. Thus, the correct option is C.
What are greenhouse gases?Greenhouse gases may be defined as those gases that are present in the earth's atmosphere and trap the heat and radiation from the sun and emitted toward the earth.
Such greenhouse gases are responsible for the greenhouse effect that ultimately leads to global warming.
Steaming and burning of fossil fuels and emissions from landfills extremely liberated the high amount of carbon dioxide in the atmosphere which is one of the most potent greenhouse gas.
Therefore, the option that does not describe a source of greenhouse gases is the freezing of glaciers (hailstone). Thus, the correct option is C.
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A student looks at the daughter cells that result from a process of cell division. Which evidence would support that the process is meiosis
A The daughter cells are larger than the parent cell
B The genetic material in the daughter cells is different than in the parent cell.
C The daughter cells are the same size as the parent cell.
D The genetic material in the daughter cells is the same as in the parent cell
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Answer:b
Explanation:
i got it right
Explanation: The DNA is the same as the parent cell
The arrows point to the genetic material in each type of cell. What is different about how it’s stored in each type of cell? Is it organized? Can it be found in one small area?
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Answer:The nucleus
The nucleus (plural, nuclei) houses the cell's genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins. Inside the nucleus, chromatin (DNA wrapped around proteins, described further below) is stored in a gel-like substance called nucleoplasm.
Explanation:These cells are different because they use the same set of genes differently. So even though each of our cells has the same 20,000 or so genes, each cell can select which ones it wants to “turn on” and which ones it wants to keep “turned off”.
Check all of the following that are components of the conducting portion of the respiratory system.
a) Nose. b) Nasal cavity. c) Respiratory bronchioles. d) Larynx. e) Trachea. f) Alveoli
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The components of the conducting portion of the respiratory system are:
a) Nose.
b) Nasal cavity.
d) Larynx.
e) Trachea.
The conducting portion of the respiratory system is responsible for the movement of air into and out of the lungs. It includes structures that facilitate air passage without gas exchange. The nose and nasal cavity help filter, warm, and humidify incoming air. The larynx (voice box) houses the vocal cords and serves as a passage for air. The trachea (windpipe) carries air from the larynx to the bronchi, which further branch into the bronchioles.
Respiratory bronchioles and f) Alveoli are components of the respiratory system, but they are not part of the conducting portion. Respiratory bronchioles are involved in both air conduction and gas exchange, while alveoli are the tiny air sacs where gas exchange occurs.
Bronchi: The bronchi are the main airways that branch off from the trachea and lead into the lungs. They further divide into smaller bronchioles.
Bronchioles: Bronchioles are smaller branches of the bronchi that continue to divide within the lungs. They help direct air to different regions of the lungs.
Terminal bronchioles: Terminal bronchioles are the smallest branches of the bronchioles. They mark the end of the conducting portion of the respiratory system and are the final airway structures that do not participate in gas exchange.
The conducting portion of the respiratory system consists of the nose, nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and terminal bronchioles. These structures work together to ensure the passage of air from the external environment to the deeper regions of the respiratory system.
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