Depolarization is promoted in muscle tissue by the opening of which type of protein channels?
Answers
Depolarization in muscle tissue is promoted by the opening of voltage-gated sodium channels.
In muscle cells, the process of depolarization involves a rapid change in membrane potential from a negative resting state to a positive state. This depolarization triggers the contraction of muscle fibers.
Voltage-gated sodium channels are transmembrane proteins that span the cell membrane of muscle cells. These channels are closed at rest but can open in response to a depolarizing stimulus. When the membrane potential reaches a certain threshold, voltage-gated sodium channels rapidly open, allowing sodium ions (Na+) to enter the cell.
The influx of sodium ions during depolarization causes a rapid and substantial increase in the positive charge inside the muscle cell, reversing the membrane potential. This change in membrane potential triggers a series of events leading to muscle contraction.
The opening of voltage-gated sodium channels is a critical step in the initiation of action potentials, which propagate along the muscle fibers, allowing for coordinated muscle contraction.
It's important to note that in addition to voltage-gated sodium channels, other types of ion channels, such as voltage-gated calcium channels and potassium channels, also play essential roles in muscle cell depolarization and contraction.
To know more about voltage-gated sodium channels
https://brainly.com/question/32917390
#SPJ11
Related Questions
The mitotic spindle is composed of ________, which originate from the __________.
Answers
The mitotic spindle is composed of microtubules, which originate from the centrosomes.
Eukaryotic cells' cytoskeleton is made up of tubulin polymers called microtubules, which give eukaryotic cells their shape and structure. Microtubules can measure up to 50 micrometres in length, 23 to 27 nm in width, and 11 to 15 nm in inner diameter. They are created when the two globular proteins alpha and beta tubulin polymerize into protofilaments, which can subsequently interact to form a hollow tube called a microtubule. 13 protofilaments are arranged in a tubular configuration to make up the most prevalent kind of microtubule. Microtubule-organizing centres, such as the centrosome located in the middle of many mammalian cells, the basal bodies of cilia and flagella, or the spindle pole bodies found in most fungi, are responsible for the nucleation and organisation of microtubules.
To know more about microtubules
https://brainly.com/question/33376395
#SPJ11
Which of these is not a category of proteins that are used in cell signaling? Choose one: A. structural protein B. nuclear receptor C. intracellular signaling D. membrane receptor
Answers
Structural protein is the proteins which is not a category of proteins that are used in cell signaling.
What is meant by cell signaling?
the process by which a cell responds to external stimuli using molecules that act as both internal and external signalling molecules.
What is the function of cell signaling?
Critical cellular decisions like development, cell growth, division, differentiation, migration, and apoptosis are governed by cell signalling, which essentially provides the coordination needed for multicellular organisms to function.
What is protein cell signaling?
A cell signalling image is displayed. proteins
To bind to signalling molecules and start a physiological response, cells have proteins known as receptors. For various molecules, different receptors exist.
To know more about protein cell signaling:
https://brainly.com/question/11222150
#SPJ1
if an individual has schizophrenia, their identical twin's chances of being similarly afflicted are about in 10 if they shared a placenta. please choose the correct answer from the following choices, and then select the submit answer button. answer choices 6
Answers
If an individual has schizophrenia, their identical twin's chances of being similarly afflicted are about 6 in 10 if they shared a placenta.
A severe mental illness called schizophrenia causes people to have aberrant perceptions of reality. The symptoms of schizophrenia may include hallucinations, delusions, and very abnormal thought and behavior that make it difficult to go about daily activities and can even be incapacitating. Schizophrenia sufferers need ongoing care. In the uterus during pregnancy, an organ called the placenta grows. A developing child is given nutrition and oxygen through this structure. Additionally, it cleans the baby's blood of waste materials. The baby's umbilical cord protrudes from the placenta, which is attached to the uterus' wall.
Learn more about schizophrenia here:
https://brainly.com/question/28345800
#SPJ4
The starchy endosperm plays what role in the barley kernel...
Answers
Reserves of food. reserves of fat, carbohydrates, or (rarely) protein that are found in cells and tissues and serve as a vital energy reserve that can be released and used to produce ATP when the body needs it.
Animals, for instance, store fat in adipose tissue while storing carbohydrates in the form of the storage molecule glycogen in the liver and muscle cells. Starch, which can be found in seeds (where it is mobilised at germination) and perennating organs (see perennation), is a major storage compound in plants. Some species also use oils as significant storage materials (e.g. in the seeds of the castor-oil plant). The barley grain's endosperm, which is the biggest tissue, is frequently referred to as the "starchy endosperm."
Learn more about ATP here:
https://brainly.com/question/836188
#SPJ4
What are the 4 types of organisms?
Answers
Answer:
animal, plant, fungi,
which of the following statements is false? which of the following statements is false? rhizobium bacteria fix calcium in the soil when they form a symbiotic relationship with legumes. mycorrhizal fungi form a symbiotic relationship with plants, allowing increased nitrogen absorption when associated with plant roots. nutrient transfer in many species involves symbiotic mutualisms. mycorrhizae are especially important in nutrient-poor soils and are found within the root systems of most plants. most herbivorous mammals depend on symbiotic bacteria in the gut to digest plant material.
Answers
The statement that is incorrect is rhizobium bacteria fix calcium in the soil when they form a symbiotic relationship with legumes, the correct option is A.
Mycorrhizal fungi form a symbiotic relationship with plants, allowing increased absorption of nutrients, including nitrogen and phosphorus, when associated with plant roots. The fungi receive carbohydrates from the plant in return.
This mutualistic relationship is especially important in nutrient-poor soils, where it allows plants to access otherwise unavailable nutrients. Mycorrhizal associations are found in the root systems of most plants, including many agricultural crops, and can significantly enhance plant growth and yield, the correct option is A.
To learn more about symbiotic follow the link:
https://brainly.com/question/31361141
#SPJ4
The complete question is:
Which of the following statements is false?
A) rhizobium bacteria fix calcium in the soil when they form a symbiotic relationship with legumes.
B) mycorrhizal fungi form a symbiotic relationship with plants, allowing increased nitrogen absorption when associated with plant roots.
C) nutrient transfer in many species involves symbiotic mutualisms. mycorrhizae are especially important in nutrient-poor soils and are found within the root systems of most plants.
D) most herbivorous mammals depend on symbiotic bacteria in the gut to digest plant material.
Match each term with its definition Terms 1. Law of conservation of energy 2. Law of conservation of mass 3. Raymond Lindeman 4. Trophic level Definitionsa. energy cannot be created nor destroyedb. a biologist who studied ecosystem ecologyc. matter cannot be created nor destroyedd. a position in a food chain, a food web, or an ecological pyramid that is occupied by a group of organisms
Answers
1. The law of conservation of energy states that energy cannot be created nor destroyed. Therefore, the correct answer is A.
2. The law of conservation of mass states that matter cannot be created nor destroyed. Therefore, the correct answer is C.
3. Raymond Lindeman is consideres the founder of ecosystem ecology. Therefore, the correct answer is B.
4. Trophic level is a position in a food chain, a food web, or an ecological pyramid that is occupied by a group of organisms. Therefore, the correct answer is D.
A populationof arctic hares burrows into the snow for shelter. It is found that the hares on the smaller side are able to burrow between rocks, as well, providing extra protection from predators. Over time, the hare populaiton becomes smaller in size, shifting the normal distribution curve for hare size.
A. Directional Selection
B. Stabilizing Selection
C. Disruptive Selection
Answers
This is because the normal distribution curve is shifting in one direction or another
Which is not a function of lipids?
A) waterproofing
B) form cell members
C) energy storage
D) primary energy use
Answers
(All of the other ones are part of Lipids)
Answer:
that would be A
Explanation:
How much wool could a sheep give it its wool wasn’t fully grown in yet?
Answers
Sheep's wool production varies based on breed, genetics, age, and nutrition. If wool isn't fully grown, they may produce less, so it's hard to give a specific amount.
Sheep typically produce a certain amount of wool each year, which is determined by factors such as their breed, genetics, age, and nutrition. If a sheep's wool has not fully grown in yet, it may produce less wool than it would if it had fully matured. The amount of wool a sheep can produce when its wool is not fully grown in can vary widely depending on the individual animal and other factors, so it is difficult to give a specific answer without more information.
learn more about Sheep's wool here:
https://brainly.com/question/9968125
#SPJ11
Please put the steps of the process an oxygen molecule goes through to get from the outside to the blood flow in order.
Answers
The process involves inhalation of air, passage through the respiratory system, gas exchange at the alveoli, oxygen binding to hemoglobin, circulation to body tissues, carbon dioxide transport, and exhalation of waste gases.
The process by which an oxygen molecule goes through to get from the outside to the bloodstream can be outlined in the following steps:
Inhalation: The individual breathes in air through the nose or mouth. The air enters the respiratory system and travels down the trachea.Trachea and Bronchi: The air passes through the trachea, which splits into two bronchi, one leading to each lung. The bronchi further divide into smaller bronchioles within the lungs.Bronchioles and Alveoli: The air moves through the bronchioles and eventually reaches microscopic air sacs called alveoli. These small, thin-walled structures are the site of gas exchange.Gas Exchange: In the alveoli, oxygen diffuses across the alveolar membrane into the surrounding capillaries. This occurs due to the concentration gradient between the air in the alveoli and the blood in the capillaries.Oxygen Binding: Oxygen molecules bind to hemoglobin, a protein present in red blood cells. Hemoglobin carries oxygen and transports it throughout the body.Circulation: Oxygen-rich blood leaves the lungs and is pumped by the heart to various tissues and organs through the arteries. The oxygen is then released from hemoglobin and diffuses into the cells to support cellular respiration.Carbon Dioxide Transport: As cells undergo cellular respiration, they produce carbon dioxide as a waste product. Carbon dioxide diffuses out of the cells, enters the bloodstream, and is carried back to the lungs.Exhalation: The carbon dioxide-rich blood returns to the lungs through the veins. At the alveoli, carbon dioxide diffuses out of the capillaries and is exhaled from the body during exhalation.To know more about respiratory system
brainly.com/question/4190530
#SPJ11
ASSIGNMENT 2.1.2. Give the numbers and names of the places (regions) where Chlorophyll-containing cells occur. 2.1.3. In which of the places in question 2.1.2 does most photosynthesis occur? 2.1.4. How is the part named in question 2.1.3. structurally adapted for process of photosynthesis? 2.1.5. Give the number and name of the tissue that transports the prod of photosynthesis to the rest of the plant. E.1.6. Name the components of tissue in question 2.1.5.
Answers
2.1.2. The numbers and names of the places (regions) where Chlorophyll-containing cells occur are:
1. Epidermis2. Mesophyll3. PhloemWhat is the parts for photosynthesis?2.1.3. The mesophyll is the primary site of photosynthesis in plants. The mesophyll is a layer of cells that lies between the epidermis and the phloem. The mesophyll cells contain chlorophyll, which is the green pigment that captures sunlight and uses it to convert carbon dioxide and water into oxygen and glucose.
2.1.4. The mesophyll cells are structurally adapted for photosynthesis in several ways. First, the mesophyll cells are packed with chloroplasts, which contain chlorophyll. Second, the mesophyll cells have a large surface area, which allows them to absorb more sunlight. Third, the mesophyll cells have a thin layer of cytoplasm, which allows for the rapid diffusion of gases and nutrients.
2.1.5. Phloem
The phloem is a vascular tissue that transports food and nutrients throughout the plant. The phloem is made up of two types of cells: sieve tubes and companion cells. Sieve tubes are long, thin cells that are connected by small pores. Companion cells are smaller cells that are attached to sieve tubes. Companion cells help to provide energy and support for sieve tubes.
2.1.6. The components of the phloem tissue are:
Sieve tubesCompanion cellsPhloem parenchymaPhloem fibersFind out more on photosynthesis here: https://brainly.com/question/19160081
#SPJ1
PLEASE HELP ME WITH THIS WORKSHEET IT DUES TODAY!!!
Answers
Some of the hazards in the gym center include:
Improper use of equipmentInadequate lightingPoorly trained staffImproperly maintained equipment - Slippery floorsOvercrowding Lack of emergency equipmentInadequate securityInadequate ventilationWhat are the hazards noticed?Regular inspection and maintenance of gym equipment is essential for preventing accidents. Any damaged or broken equipment should be repaired or replaced immediately.
Spills or wet floors can cause people to slip and fall. Gym staff should ensure that the floors are dry and free from any obstructions.
Overcrowded gyms can be hazardous, particularly during peak hours. Gym management should limit the number of people allowed in the gym and ensure that there is enough space for everyone to exercise safely.
Learn more about hazard on:
https://brainly.com/question/7310653
#SPJ1
What is endocytosis?
a. Osmosis
b. Particles in the nucleus
c. The cell taking in molecules
d. DNA
Answers
Answer:
c. The cell taking in molecules
Explanation:
Microbial endosymbionts a. are relatively rare. b.are found in a few ecosystems. c. provide nutrition to host animals, including humans. Od. are only found in animals
Answers
Endosymbionts provide nutrition to host animals, including humans. thus, The correct answer to the question is option C.
What are microbial endosymbionts?Endosymbionts are microorganisms that live within the bodies of other organisms. These microorganisms live within host cells and, as a result, are endosymbionts. They are found in many ecosystems and can be essential to the survival of the organism they inhabit.Microbial endosymbionts play a significant role in many different ecosystems, including those that exist in and around animals. These organisms are essential for the survival of many animals, and they provide the nutrients that these animals need to survive. These nutrients can come in the form of food or other substances that the endosymbiont produces. In humans, endosymbionts help with the digestion of food and play a role in the immune system's function.Microbial endosymbionts are not rare, as they are found in many ecosystems. They are also not limited to animals, as they can be found in a wide variety of organisms. Some examples of endosymbionts include bacteria that live in the human gut and algae that live in corals.
To know more about endosymbiosis click here
brainly.com/question/14851695
#SPJ11
This is the combination of decomposed organic matter and weathered rock that supports plant growth
Answers
Answer: Soil
Explanation:
The largest accessory organ of the digestive system is the liver. The liver performs which of the following functions in the body
Answers
What is an advantage of flowering plants.
Answers
Answer:
Flowering plants are very important for the ecosystem and the humans.
Explanation:
Flowering plants are plants that bear flowers and fruits. They are necessary in order for the plant to produce seeds and allow seeds to exist generation after generation. They also help different insects and plants for pollination.
The drawing below shows a cellular process during which an important biological molecule is being made.
Which type of biological molecule is being made during this process?
tRNA
mRNA
protein
phospholipid
Answers
Answer:
During this process the messenger RNA and the transfer RNA are manufactured
Explanation:
These RNAs are necessary to be able to comply with the formation of proteins, since they read the genetic code and after this they assemble the reading to make proteins of structure, function and support.
This is how cells when dividing or multiplying separate their genetic code by replicating.
Free 10 points! Right Answers Only!
Answers
Answer: C, A, D
Explanation:
lemme get brainliest bruv
Answer: The answers are the following:
1.C
2.A
3.D
Explanation:
Need answers NOW Help
Answers
Answer:
oxygen
Explanation:
because it comes after water
A chimpanzee pushes a brown box on a wood floor. Then he uses the same force to push a blue box on the carpet. The boxes are identical except for color. Which box will move farther?
It's impossible to know
the blue box
the brown box
They will both move the same distance.
Answers
Highland Village, Texas, has implemented a program that involves parents working with police to guide at-risk young people. If a young person is caught committing a petty
crime, police work with their parents to decide on a punishment that the parents can enforce. What kind of police program is this an example of?
OA specific deterrence program
OB. community policing program
OC due process method program
OD. police-community relationship program
Answers
The kind of police program is an example of a police-community relationship program. Thus, option "D" is correct.
What is community policing?Community policing is an organizational philosophy that encourages the methodical use of problem-solving and partnership tactics to address the underlying conditions that lead to public safety issues like;
Social disorderCrimeFear of crimeThus, option "D" is correct.
Check out the link below to learn more about community policing;
brainly.com/question/19755869
#SPJ1
The movement of genes from one population to another population is known as _____.
All answers are correct.
allele
gene pool
gene flow
Answers
The movement of genes from one group to another is referred to as gene flow.
The exchange of genetic information between populations is referred to as gene flow. This can occur through migration, where individuals move from one population to another and bring their genes with them, or through interbreeding between populations. Gene flow can have a significant impact on the genetic makeup of populations, introducing new alleles and changing the frequency of existing alleles in the gene pool.
Allele frequencies can change in local populations even while gene flow does not affect allele frequencies for a species as a whole. In the case of migration, the impact of the migrants on altering the genetic makeup of the resident population increases with both the number of migrants and the difference in allele frequencies between the resident and migrant populations.
To learn more about gene flow, refer:-
https://brainly.com/question/29992261
#SPJ4
Proteins are made using
instructions from....
A. fatty acids
B. smooth ER
C. glycerol
D. DNA
Answers
Answer:
D
Explanation:
Its moves from DNA to mRNA to protein
(a) Waves P and Q have the same __________, but wave P has twice the __________ of wave Q.
Answers
Answer:
(a) Waves P and Q have the same wavelength but wave P has twice the amplitude of wave Q.
(b) Waves Q and R have the same amplitude but wave R has twice the wavelength of wave Q.
(c) Wave T shows a steady frequency but changing amplitude.
(d) Wave S shows steady amplitude but a changing frequency.
e) Waves Q and R have a low amplitude and a steady frequency.
Explanation:
Which Sl unit is most appropriate for measuring weight?
O A. Kilograms (kg)
B. Kelvins (K)
O C. Newtons (N)
O D. Meters (m)
Answers
i hope this helps!:)
Answer:
Kilograms (kg)....
Explanation:
Meters is used for height, Newton's for force...
There is a total of___alleles in this population. there are____alleles in the population.
Answers
In this population, there are 8 different alleles altogether. In the general population, there are 5F alleles.
What are examples and alleles?For instance, the same trait, eye color, is determined by two alleles that, respectively, code either black eyes & brown eyes. All of an object's alleles together make up its genotype. A person's genotype is referred to as homozygous if a group of genotypes are similar to one another.
What does an effective allele go by?Dominant describes the relationship between two genetic variations. An adolescent inherits one of each of the two alleles for each gene from each parent. If the polymorphisms of a gene be diverging, only one allele—the dominant gene—will be translated.
To know more about alleles visit:
https://brainly.com/question/14206531
#SPJ4
PLS ONLY ANSWER IF U KNOW IT
what is 1 direct result of the unheating of earth
a tides
b global winds
c earthquakes and volcanoes
d movement of techtonic plates
Answers
The testes are male reproductive organs that produce and store _______, which is the male gamete containing half of the DNA in somatic cells. The typically 28-day process of egg release from the ovaries and, if fertilization does not occur, release from the body, is known as the _______ cycle. If two eggs are released and fertilized by two different sperm, then ________ twins will occur. If a hormone operates by entering a cell's nucleus and altering the expression of its DNA, then it is classified as a/n _______ hormone. Once sperm cells are mixed with seminal fluid to provide protection and nutrition, this mixture is known as _______. The bulbourethral and _______ glands play an important role in providing additional fluids to semen production. The first phases of a new zygote's growth through mitosis occur in the _______. The ________ germ layer will eventually develop into the skin and nervous system. A fetus growing in the uterus does not eat food or drink water. Instead, important nutrients, antibodies, and molecules pass from the mother through the _______. Make a list, or write a short paragraph, that explains the major stages of pregnancy after fertilization, through childbirth. Provide as much detail as possible.
Answers
Answer:sperm
menstrual
fraternal
steroidal
semen
prostate
fallopian tube
ectoderm
placenta
After fertilization of an egg by sperm in the fallopian tubes, a blastocyst forms and implants on the uterus wall. These cells then begin to differentiate. During gastrulation, the three main germ layers form (endo, meso, and ectoderms). During neurulation, the notochord and neural tube form. The neural tube must close to avoid birth defects or conditions. The amniotic sac forms, and the placenta forms to provide a link from the mother to the fetus through the umbilical cord. During months 4-6, bones replace cartilage and organs develop. In months 7-9 the fetus matures its lungs and central nervous system. Finally, oxytocin triggers childbirth, when uterine contractions push the baby from the vagina.
Explanation:
Answer:
sperm
menstrual
fraternal
steroidal
semen
prostate
fallopian tube
ectoderm
placenta
After fertilization of an egg by sperm in the fallopian tubes, a blastocyst forms and implants on the uterus wall. These cells then begin to differentiate. During gastrulation, the three main germ layers form (endo, meso, and ectoderms). During neurulation, the notochord and neural tube form. The neural tube must close to avoid birth defects or conditions. The amniotic sac forms, and the placenta forms to provide a link from the mother to the fetus through the umbilical cord. During months 4-6, bones replace cartilage and organs develop. In months 7-9 the fetus matures its lungs and central nervous system. Finally, oxytocin triggers childbirth, when uterine contractions push the baby from the vagina.
Explanation: