Cation ligand-gated channels are the proteins that interact with the released chemical to cause the electrical signal in the muscle cell.
Neurotransmitters are chemical signals released in the cleft when a nerve impulse arrives at the neuromuscular junction. A ligand-gated cation channel opens as a result of these chemical signals binding to the motor endplate's receptor. The receptor contains these channels. Cations, specifically Na+, can flow across the membrane by opening ion channels. A muscle action potential is sparked by the introduction of cations, which increases the positive charge of the muscle fiber's interior. acetylcholine is found in motor neuron synaptic vesicles at a neuromuscular junction.
know more about neuromuscular junction here: https://brainly.com/question/5865840
#SPJ4
(complete question)
At the neuromuscular junction, an electrical signal from the motor neuron is translated to a chemical signal and then back to an electrical signal in the muscle cell. What proteins interact with the released chemical to cause the electrical signal in the muscle cell?
a.Sodium voltage-gated channels
b.Potassium ligand-gated channels
c.Cation ligand-gated channels
d.Calcium mechanical-gated channels
would a chimeric translation system with e coli ribosome small subunit and yeast ribosome large subunit be able to function for protein synthesis? why or why not?
Most ribosomal protein (r-protein) synthesis in Escherichia coli is coordinated with rRNA synthesis via a translational feedback mechanism: when r-protein levels exceed rRNA levels, particular r-proteins bind to their own mRNAs and prevent operon expression.
How does translation bring the ribosome's large and small subunits together?Ribosomal subunits form a sandwich-like structure on the strand of mRNA during translation, where they then draw in tRNA molecules bound to amino acids. The ribosome converts the decoded mRNA sequence into a polypeptide, or new protein, which is composed of a lengthy chain of amino acids.
Which protein in E. coli triggers transcription?More than a hundred genes in Escherichia coli are controlled by the flexible transcriptional regulator known as the cAMP receptor protein, also referred to as the catabolite activator protein.
To know more about e coli ribosome visit:-
https://brainly.com/question/17763018
#SPJ4
What model organism are you using for the genetic mutation experiments?
Answer: zebrafish
Explanation:
Since the 1960s, the zebrafish has become increasingly important to scientific research. It has many characteristics that make it a valuable model for studying human genetics and disease.
Which macromolecule would serve as an energy source for the cell and is used as a component in the cell wall of plants?.
the closest relatives of fungi and animals are group of answer choices amoebozoans. chlorophytes. alveolates. stramenopiles. none of these.
A group of amoebozoans are the closest living relatives of fungi & animals.
Fungi are either bacteria or plants.A lot of people think that fungus are plants. Fungi, on the other hand, are organisms that belong to their own order of life and are neither plant nor animals. They do not carry out photosynthesis like plants or consume their food like animals, which distinguishes them from other species in this regard.
What do mushrooms eat?Since they feed on decaying or decaying matter, most fungus are saprophytes. The accumulation of leaf litter or other trash on the ground is reduced as a result. The nutrients that the fungus has taken subsequently become available to other species that may consume fungi.
To know more about Fungi visit:
https://brainly.com/question/1287565
#SPJ4
a wound in which the epidermis is scraped away with minimal bleeding, such as commonly occurs when a child falls on his knees on a sidewalk, is called ano:
A wound in which the epidermis is scraped away with minimal bleeding, such as commonly occurs when a child falls on his knees on a sidewalk, is called a(n): abrasion.
What is abrasion?Abrasion is a wear that occurs on the skin due to frictional friction. A slight injury occurs that can cause a small bleeding or secretion in the injury. It is not a serious type of wound, it is something very superficial and minimal that can be treated with certain care.
Therefore, we can confirm that the correct option is: abrasion.
To learn more about abrasion visit: https://brainly.com/question/9624379
A wound in which the epidermis is scraped away with minimal bleeding, such as commonly occurs when a child falls on his knees on a sidewalk, is called a(n):
Abrasion.
Contusion.
Avulsion.
Evisceration.
#SPJ1
Based on current climate trends, which technological innovation could help solve an environmental issue that is likely to threaten Australia in the future?
A.
Water catchments could help stop overfishing.
B.
Water catchments could help slow climate change.
C.
Using electric cars could help slow climate change.
D.
Using electric cars could help lessen droughts.
The technological advancement that might help Australia overcome its drought problem would be "Catchments for water would slow climate change".
A protracted deficit in a region's water supply is referred to as a drought. Lack of air, surface, or groundwater causes droughts. Therefore, water catchments could help slow climate change" would be the technical advancement that could assist in resolving an environmental problem that is projected to endanger Australia inside the future based on existing climatic trends.
Therefore, the correct answer will be option (B).
Learn more about Water climate change at
https://brainly.com/question/12595249
#SPJ1
2
3
5
Charle
Marie
O
XX
M
John
x"Y
Fred
?
Based on the pedigree that is shown, which describes John?
carrier for hemophilia
expresses hemophilia
does not have hemophilia
expresses hemophilia and died of complications
Does not have hemophilia based on the pedigree describes John.
Option C is correct.
What exactly is hemophilia X?Given that males have only one X chromosome, hemophilia is a hereditary condition that runs in the X-linked recessive family. Because of the corresponding X chromosome, females are typically carriers, but heterozygous carriers frequently exhibit hemophilia symptoms.
What is the X chromosome's role in hemophilia?The X chromosome houses the faulty gene that causes hemophilia. Males possess one X and one Y chromosome. As there is no protective X to produce factor VIII or IX in a male, the presence of the faulty gene causes a deficiency or absence of factor VIII or factor IX.
To know more about hemophilia visit:-
https://brainly.com/question/1428363
#SPJ1
Why are zygotes considered unique?
Answer:
Each zygote has its own combination of genes
Explanation:
according to opinion polls, how do scientists and non scientists react differently to the idea of evolution?
Most scientists (66%) agree that evolution is a valid theory, while the majority of nonscientists think the theory adequately captures the natural world.
What do you mean when you research how the mind and behavior evolved using the laws of natural selection?Evolutionary psychology investigates our shared characteristics as people. Utilizing the ideas of natural selection, it focuses in particular on how behavior and the mind have evolved. More likely to be handed on are traits that help with reproduction and survival.
What statement about Darwin's theory of natural selection is accurate?What statement about Darwin's theory of natural selection is accurate? The possibilities of a species surviving are eliminated by genetic mutations.
To know more about idea of evolution visit:-
https://brainly.com/question/26093293
#SPJ4
in the arctic region, the arctic fox and the ptarmigan (a small bird species) both grow a snowy white coat during the winter for camouflage. these similar phenotypes are an example of: group of answer choices vestigial structures homologous structures convergent evolution homologous recombination
In the arctic region, the arctic fox and the ptarmigan both grow a snowy white coat during the winter for camouflage these similar phenotypes are an example of analogous structures.
The proof of the Convergent Evolutionary relationship among the species is provided by Analogous Structure. Convergent evolution played a role in the development of the species' common features. These are the architectural forms that serve similar purposes. However, these structures are not comparable anatomically. This indicates that their anatomical structures are distinct.
We can use the difference between a bat and a butterfly as an illustration. Both a bat's and a butterfly's wings serve the same purpose. They assist in flying them. Thus, the purpose remains the same. However, the anatomical makeup is different. Bones and skin are used in the development of Wings of Bat. However, the butterfly's wings are made entirely of different materials.
For more information analogous structures kindly visit on
https://brainly.com/question/8593743
#SPJ4
ultimately how do enzymes lower activation energy? a) enzymes help force substrate into a form closely resembling the transition state b) increasing km by altering the catalytic perfection state c) achieve catalytic perfection at a reduced rate d) all of the above e) none of the above
All of above option is correct .
In order for the reactants to convert to the products, a minimum amount of energy is required activation energy.
Enzymes are biological catalyst that catalyze a chemical reaction .Catalysts lower the activation energy for reactions. When the activation energy is lowered the the reaction rate becomes faster. Hence , enzyme speeds the reaction by lowering the activation energy .
In the process of chemical reaction, the reactants bind to the active site of the enzyme, that forms an enzyme-substrate complex, this complex has lower activation energy than the substrate.
To learn more about activation energy , here
brainly.com/question/28384644
#SPJ4
At what point on a roller coaster is the gravitational potential energy (GPE) the highest?
A- at the top of the highest drop
B-at the lowest point of the roller coaster
C-at the top of the second hill
D- when the coaster stops
Answer:
A at the top
I got this correct on my test
ecologists, and archaeologists, interested in biodiversity and animal populations, often refer to species richness in particular environments. species richness refers to
Species richness (S) is the number of species within a defined region. It's merely a numerical characteristic of an ecosystem. The species richness of a region is obtained through sampling or via a census.
Because a region is defined by the observer, species richness has been further categorized into three components to account for changes in spatial scale. They are Alpha diversity, Beta diversity and Gamma diversity.
One important thing to keep in mind is the difference between species richness and species diversity. Several factors affect small-scale species richness, including geographic factors such as the regional species pool, dispersal distance and ease of dispersal, biological factors such as competition, facilitation, and predation as well as environmental factors such as resource availability etc.
Learn more about species richness here:
https://brainly.com/question/21452535
#SPJ4
during mid-pregnancy, the brain increases about six times in size and develops many new neurons in a process called .
Answer:
During mid-pregnancy, the brain increases about six times in size and develops many new neurons in a process called
neurogenesis
Explanation:
Have a nice day^^
explain the test the scientist devised to examine cats knowledge
Cats knowledge is tested via the objects showing to the cats if they look for it or not.
What is the cats level of intelligence ?A cat's behavior is exactly to that of 2 years old toddler.
To test a cat's intelligence, show a cat a toy and hide the object behind something. In case if the cat tries to find the toy behind the object then the cat may have above-average intelligence. A try can be done on this as well that we can also try placing a container of your cat's food or treats next to its food bowl.
Learn more about IQ test for cats at :
https://brainly.com/question/14502949
#SPJ1
is human evolution over? if not, what directions might human evolution take in the future? what do you imagine will be the main selective forces future humans face? describe some potential cultural adaptations and some potential genetic adaptations
Evolution is defined as gradual change to the DNA of a species over many generations.
Palaeoanthropology is the scientific study of human evolution
Human evolution is the lengthy process of change by which people originated from apelike ancestors
It can occur by natural selection, when certain traits created by genetic mutations help an organism survive/reproduce. These mutations will pass onto next generation.
On our recent study of DNA, we can see evidence that natural selection has recently made changes, so evolution will never stop.
There are several signs of human evolution-
1. The adaptation to the threat of infectious diseases and High prevalence of diseases like sickle cell disease and thalassemias
2. Also. deviations from expected allele frequencies provide clues that genes have undergone selection.
Human activity has altered our atmosphere with time. Also, humans now have the capability to take a direct hand in evolution of species it includes with artificial selection , animal and plant breeding, genetic engineering and genome editing etc.
To know more about human evolution,
https://brainly.com/question/13492988
#SPJ4
what is found in plant cells but not yeast cells
Answer:
The plant cell wall is made up of cellulose but that of the yeast is a fungi and its cell wall is made up of chitin
Answer:
Yeast cells lack chloroplasts.
Explanation:
As heterotrophs, yeasts. They cannot make their own food through photosynthesis. Chloroplasts are absent in yeast cells.
____________________
Hope this helps!
Have a great day!
Please Answer all questions
1.
Observe the geologic cross section. Which layer is the oldest?
A
F
G
K
2.
What would you classify F as?
intrusion
inclusion
rock layer
fault
3.
Which of the following unconformities are present in this geologic cross section?
disconformity
angular unconformity
nonconformity
4.
J(Zoroaster granite) is older than F (basalt).
True
False
5.
Which stratigraphy principle(s) is/are used to determine the history of this cross section? (select all that apply)
Principle of Original Horizontality
Principle of Superposition
Principle of Lateral Continuity
Principle of Cross-Cutting Relationships
6.
What is the geologic history of this cross section?
Time to summarize the history of this geologic cross section. When writing about layers, you may refer to them by their designated letter (i.e. K) or the layer name (i.e. Vishnu Schist). Be sure to write in full, complete sentences using proper grammar and punctuation.
The history of the cross-section is given as follows:
One of the geological concepts that geologists employ to establish the relative ages of rock strata or layers, is the rule of superposition. According to this concept, layers of rock are overlaid or put down one on top of another. The oldest rock layers will be at the bottom, followed by the youngest.
Alternatively, the superposition rule is a fundamental concept of stratigraphy that states that within a succession of sedimentary rock layers, the oldest layer is at the bottom and the layers get increasingly younger with ascending order in the sequence.
Learn more about Superposition:
https://brainly.com/question/12493909
#SPJ1
which of the following characteristics of the structure of dna was determined directly from x-ray diffraction photographs of crystallized dna? question 7 options: the frequency of a versus t nucleotides the sequence of nucleotides the double helical structure the length of a given dna molecule
The following characteristics of the structure of DNA were determined directly from x-ray diffraction photographs of crystallized DNA is the double helical structure.
Early X-ray diffraction results showed that DNA is composed of two strands of helically twisted polymers. The observation that DNA is double-stranded is significant and provided one of the key clues leading to the Watson-Crick structure of DNA.
Fiber diffraction is a method for determining molecular structural information from X-ray scattering data. Rosalind Franklin used this technique to discover structural information in his DNA. In this experiment, the fiber is placed perpendicular to the trajectory of her X-ray beam. Rosalind Franklin's X-ray diffraction pattern of the DNA molecule provided important evidence that DNA has a double-helical structure.
Learn more about DNA here:-https://brainly.com/question/16099437
#SPJ4
significant damage to which of the following parts of the brain will most likely cause a person to fall into a deep coma from which the person will be unable to awaken? responses hypothalamus hypothalamus frontal lobe frontal lobe reticular formation reticular formation amygdala amygdala thalamus
Significant damage to reticular formation of the brain will most likely cause a person to fall into a deep coma from which the person will be unable to awaken.
The reticular formation, a long, slender network of neurons, runs through the medulla and the pons. The reticular formation is crucial for walking, eating, having sex, and sleeping. When an animal's reticular formation is electrically stimulated, it awakens instantly, and when the reticular formation is cut off from higher brain regions, the animal enters a deep coma.
The reticular formation's function is to transport the remaining impulses to different parts of the brain while filtering some of the stimuli entering the brain via the spinal cord. The medulla, the pons, the thalamus, and the reticular formation are all parts of the brain stem, which is an extension of the spinal cord.
To know more about brain, refer to the following link:
https://brainly.com/question/14449856
#SPJ4
during the refractory period, the cell a. is insensitive to further stimulation; b. responds to even weak stimuli; c. reverses the direction of the action potential; d. generates many local potentials e. increases the strength of the action potentia
During the refractory period, the cell responds to even weak stimuli.
Option B is correct.
What takes place during the refractory stage?The time period immediately following an orgasm during which a person is not sexually responsive is known as the refractory period. Both mental and physical repercussions may result from the refractory phase. A person may become uninterested in or incapable of having intercourse during the refractory period.
Why is it vital to understand the refractory period?An essential component of neural signaling is the pace of generation of action potentials, which is constrained by the refractory period. The refractory period also makes it easier for the action potential to go in a single direction along the axon.
To know more about stimuli visit:-
https://brainly.com/question/26306069
#SPJ4
Blood flows from the renal artery into the interlobar arteries then into the ______ arteries, which then branch into the afferent arterioles.
The interlobar arteries are the first places where blood enters after leaving the renal artery.
How do interlobular arteries and veins exchange blood?Afferent arterioles flow into the interlobular arteries that feed into the glomeruli through each arcuate artery. The blood passes through a tiny network of venules that converge into interlobular veins once filtering has taken place.
How do the interlobar veins send blood to the inferior vena cava?Interlobar vessels allow arcuate veins to exit the renal parenchyma and converge into four to six trunks close to the kidney's hilum (Fig. 64.2). The primary renal veins discharge into the inferior vena cava; the left renal vein is three times longer than the right (7.5 cm versus 2.5 cm).
To know more about arterioles visit:-
https://brainly.com/question/12977613
#SPJ4
Carbohydrates and fats both??
can be used as an energy source by organisms
can be bonded together to construct DNA molecules
are made up of the glucose monomer
are monomers that can be made into large polymer chains
Please Helpp!! ASAP
Answer:
they can be used as any of the options
bacitracin is made naturally by the bacterium bacillus subtilis and is primarily only used to target skin infections caused by gram-positive bacteria. this type of chemotherapeutic drug would best be characterized as a(n) .
bacitracin is made naturally by the bacterium bacillus subtilis and is primarily only used to target skin infections caused by gram-positive bacteria. this type of chemotherapeutic drug would best be characterized as a narrow-spectrum antibiotic.
What is narrow-spectrum antibiotic?Antibiotics with a narrow spectrum are effective against a certain subset of bacterial species. They are only able to affect gramme +ve or gramme -ve, not both.
When the etiological organism is identified, special narrow-spectrum antibiotics are administered. They won't eradicate as many common microorganisms as broad-spectrum antibiotics do. They prevent the spread of illnesses with medication resistance because they only affect a small number of extremely particular bacteria.
antibiotics that are particular to one type of bacteria, such as those that only kill gram-positive or gram-negative bacteria.
Learn more about narrow-spectrum antibiotics here :
brainly.com/question/6583338
#SPJ4
the rapid depolarization phase of the action potentials of myocardial contractile cells is due to which ion(s)?
The rapid depolarization phase of the action potentials of myocardial contractile cells is due to Na⁺ ion.
The depolarization is caused when Na⁺ ions rapidly enters into neuron through open sodium channels. Sodium ions plays important role in various physiological process such as regulating blood volume, ph regulation, maintaining blood pressure, energy metabolism,osmotic equilibrium, excitation-contraction coupling, maintenance of cellular homeostasis, development and growth.
https://brainly.com/question/6639857
#SPJ4
sea turtles reproduce by laying clutches of eggs in the sand and will often return to the same beach where they hatched to lay their eggs. this is an example of a behavior called philopatry. by laying eggs to reproduce, sea turtles are considered...
By laying eggs to reproduce, sea turtles are considered to be Oviparous.
An oviparous creature is one that produces eggs, and the youthful hatch after being ousted from the body. Whereas fertilization of the egg can happen inside or remotely, oviparous creatures continuously hatch the youthful outside of their body. Numerous creatures of land and water, winged creatures, fish, and reptiles are oviparous and regularly make homes to secure their eggs. This could be differentiated from ovoviviparous creatures, which hatch eggs interior of their bodies, at that point remove live young. This will be seen in a few sharks, snakes, and other animals. Being oviparous is a developmental procedure for generations. In this strategy, one or numerous eggs can be delivered. Each egg could be a gamete that has the female’s commitment to the hereditary material. In numerous species, the male supplies his gamete in the shape of sperm, which must discover its way to the egg. Once fertilized, the cells inside the egg will start to subdivide as a fetus is shaped
To know more about sea turtles refer to the link https://brainly.com/question/1428315?referrer=searchResults.
#SPJ4
Explain the role of living things in the nitrogen cycle.
- 7th grade science
The role of Living Organisms is to convert the dead and decaying matter to ammonia(NH₃) in the nitrogen cycle.
Plants require nitrogen to make proteins DNA, RNA, ATP, etc. The nitrogen cycle is a process in which plants convert nitrogen into nitrates. This can be done by volcanic action, lightning, industrial activity, and by some bacteria.
These bacteria are the living organisms that use the plant as a carbohydrate source of energy and shelter and in turn, the plant uses the nitrate the bacteria produces for nitrogen fixation. The nitrates are then converted into plant and animal proteins, DNA and RNA.
Learn to know more about Nitrification on
https://brainly.com/question/28195929
which arteries connect the basilar artery and the internal carotid artery forming the posterior aspect of the cerebral arterial circle?
A posterior communicating artery connects the ipsilateral internal carotid artery to the two posterior cerebral arteries, which were created by dividing the basilar artery.
A member of the cerebral vascular circle of Willis is the posterior communicating artery (PComm), a branch of the internal carotid artery. The internal carotid and the posterior cerebral arteries are linked by the posterior communicating artery, uniting the anterior and posterior cerebral circulations.
At the back of your brain lies a blood vessel called the basilar artery. It nourishes your brain and central nervous system with oxygen-rich blood. The primary artery that supplies blood to the back of your brain is called the basilar.
To learn more about basilar artery, refer
https://brainly.com/question/28145473
#SPJ4
not all members are equal in their ability to survive and reproduce in a what? A. Community, B. Ecosystem, C. Organism, D. populations
Not all members are equal in their ability to survive and reproduce in a population. Option D.
What is a population?A population is defined as the total number of organisms of the space species living in a particular at a specific period.
A population of 2 or more different species of organisms living and interacting together is known as a community. Two or more communities interacting with themselves and the non-living components of their environment constitute what is known as the ecosystem.
Thus, in order to make a logical comparison, organisms must be of the same species in the same population. There is always competition for resources among organisms of the same species. This competition is known as an intra-species competition.
Also, organisms of the same species within the same population differ in their reproductive capacity and ability to survive. Thus, natural selection selects the best individuals to survive and reproduce. Natural selection acts on populations.
More on populations can be found here: https://brainly.com/question/27991860
#SPJ1
scientists develop models to help them understand the natural world
Scientists make definite assumptions to maximize this aim of understanding natural world. It is presumed by scientists that:
A. Through a organised study, nature can be understood.
B. Revisions are something that scientific thoughts are open to.
C. The test of time is something that shows scientific ideas withstand to.
Laws of nature are explained as scientific laws.
Nature is thought by scientists as a single system that is handled by natural laws. Scientists tries to extend their understanding of the natural world by discovering natural laws. Scientific laws are the result of laws of nature.
To learn more about Scientific laws
https://brainly.com/question/15189105
#SPJ9