In non-muscle cells, a small increase in the cytosolic concentration of Ca2 can have a dramatic effect on several physiological processes. The presence of a specific protein in the cytosol, however, activates a Ca2 ATPase that serves to return these elevated cytosolic Ca2 levels back to basal levels, thereby maintaining the cell's normal physiology. Which protein is directly involved in activating this Ca2 ATPase
Answers
Answer:
calmodulin
Explanation:
The calcium-modulated protein (calmodulin) is a calcium-binding receptor protein that modulates contractile proteins (i.e., actin and myosin proteins) of the skeletal muscle and non-muscle cells (e.g., platelets). Calmodulin binds to calcium ions (Ca2+) and subsequently activates a number of Ca2+ dependent enzymes (e.g., kinases or phosphatases), which finally activate/deactivate proteins in the calcium signal transduction pathway. Ca2+-ATPase pumps in the membranes of eukaryotic cells release Ca2+ from the cytoplasm and they are autoinhibited by low Ca2+ levels, while calmodulin-binding releases this autoinhibition and thus activates the pumps. In non-muscle cells such as platelets, calmodulin also mediates Ca2+ control of actin-myosin interaction by phosphorylation of the myosin light chain (MLC).
Related Questions
How are inherited characteristics passed or through generations?
A. RNA
B. Teaching
C. Blood
D. DNA
Answers
Answer:
DNA
Explanation:
DNA is the genetic code that determines your characteristics and is passed on from your parents.
Answer: DNA
Explanation: teaching are u serious? you can have different blood types from your parents. RNA just no
6. What is another name for fiber?
cellulose
bran
grains
protein
Answers
Answer:
1.
Explanation:
Answer on my test sorry if its wrong on yours.
Another name for fiber is bran. Bran is the outer layer of whole grains, which is a rich source of dietary fiber.
What is fiber?Dietary fiber, also known as roughage or bulk, refers to the indigestible portion of plant-based foods that cannot be broken down by human digestive enzymes. Unlike other nutrients such as fats, proteins, and carbohydrates, dietary fiber is not absorbed by the body but passes through the digestive system relatively intact, providing a range of health benefits.
These include promoting regularity and preventing constipation, reducing the risk of colorectal cancer, regulating blood sugar levels, reducing cholesterol levels, and promoting a feeling of fullness that can aid in weight management. Good sources of dietary fiber include fruits, vegetables, whole grains, legumes, nuts, and seeds.
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6. What is the function of the energy storing polysaccharides starch and glycogen?
Answers
Answer:
Polysaccharides generally perform one of two functions: energy storage or structural support. Starch and glycogen are highly compact polymers that are used for energy storage. Cellulose and chitin are linear polymers that are used for structural support in plants and animals, respectively.
Starch serves as energy storage in plants. Glycogen is an even more highly branched polysaccharide of glucose monomers that serves the function of energy storage in animals. Glycogen is made and stored primarily in the cells of the liver and muscles.
What is inversion?
When the gene of interest inserts into the plasmid without DNA ligase joining the ends
the gene of interest inserts into the plasmid backwards
the plasmid closes up and is joined back together without the gene of interest
the gene of interest inserts into the plasmid upside down
Answers
An inversion is a type of genetic mutation that occurs when a segment of DNA is reversed or flipped in orientation. It can occur spontaneously or can be induced artificially in the laboratory using techniques such as DNA inversion. d) The gene of interest inserts into the plasmid upside down.
An inversion is a genetic mutation that involves the reversal or flipping of a segment of DNA within a chromosome. This mutation can occur spontaneously due to errors in DNA replication or repair, or it can be induced artificially in the laboratory through genetic engineering techniques. Inversions can have a variety of effects on an organism, depending on the location and orientation of the inverted segment. In some cases, inversions can disrupt important genes or regulatory regions, leading to developmental abnormalities or disease. In other cases, inversions can create new genetic variation that may be beneficial or adaptive in certain environments. Understanding the mechanisms and effects of inversions is important in fields such as genetics, evolution, and biotechnology.
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what system do spiracles open into on a grasshopper
Answers
Answer:respiratory system
The spiracles on a grasshopper open to the respiratory system of the insect.
Explanation:
Can I have help pls I do not understand this
Answers
The beta-2 adrenergic receptor is a membrane-bound protein that regulates several cellular processes, including the synthesis and breakdown of glycogen. The receptor binds specifically to the hormone epinephrine. The binding of epinephrine to the beta-2 adrenergic receptor triggers a signal transduction cascade that controls glycogen synthesis and breakdown in the cell. A simplified model of the signal transduction cascade is represented in Figure 1.Figure 1. A simplified model of the signal transduction cascade triggered by epinephrine binding to the beta-2 adrenergic receptorWhich of the following outcomes will most likely result from the inactivation of the beta-2 adrenergic receptor?A. The cellular concentration of cyclic AMPAMP will increase.B. The enzymatic activity of protein kinase A will increase.C.The activation of glycogen phosphorylase will increase.DThe rate of glycogen synthesis in the cell will increase.
Answers
The most likely result of beta-2 adrenergic receptor inactivation is the rate of glycogen synthesis in the cell will increase.
Based on Figure 1, activation of beta-2-adrenergic receptors causes stimulation of glycogen breakdown and inhibition of glycogen synthesis. The immediate effect of the deactivation of beta-2-adrenergic receptors is an increase in the rate of glycogen synthesis in cells because glycogen synthesis is no longer inhibited. Glycogen breakdown in cells is also no longer stimulated, because glycogen phosphorylase may be deactivated.
This question is multiple choice:
A. The cellular concentration of cyclic AMPAMP will increase.
B. The enzymatic activity of protein kinase A will increase.
C. The activation of glycogen phosphorylase will increase.
D. The rate of glycogen synthesis in the cell will increase.
The true choice is D
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Carlos is asked by his teacher to closely observe the pixels on a television screen with a magnifying glass. He is told that each pixel emits one color of light at a time and that the colors emitted by adjacent pixels combine to create an image on the television screen. His teacher asks him to identify which colors the pixels emit. Carlos knows that any shade of paint can be made out of red, blue, and yellow paint. So he decides not to closely observe television and concludes that television pixels must emit red, blue, or yellow light to generate an image.
How did Carlos reach his conclusion?
A. He closely observed the colors of television pixels emitted.
B. He conducted a controlled experiment.
C. He proved that the properties of light are the same as those of paint.
D. He let his prior expectations bias his investigation.
Answers
Answer:
d
Explanation:
he let his prior expectations ...
Answer:
D
Explanation:
As Carlos did not closely observe the television, he did not conduct a controlled experiment, but used his knowledge of the past about paint, colour and light to create a bias investigation.
Organisms that live where there
IS no light use a process that
converts energy from chemicals
into sugars. What is it called?
Answers
explaination: runs on chemical energy. Together, photosynthesis and chemosynthesis fuel all life on Earth
why do scientists take measurements when recording data
Answers
I want to know characteristics of reptile, please answer quick :))
Answers
Answer:
Reptiles are vertebrates. They have backbones.Their bodies are completely covered with scales.They are cold-blooded.Reptiles produce shelled eggsAll species fertilize eggs internally.All species of reptiles have at least one lungAnswer:
Some of the characteristics of reptiles are :-
Reptiles are cold-blooded.They have dry skin covered with scales, without any glands.They are vertebrates with their body divided into head,neck, trunk and tail.They respire through lungs.Most of them lay eggs.What is the probability that a child will have dimples when both parents are heterozygous for the gene that determines dimples?
Answers
The probability of their child having dimples is 3/4 or 0.75, which is equivalent to a 75% chance, as in the gene and both parents being heterozygous.
The gene for dimplesThe gene for dimples is a dominant trait, which means that if an individual inherits at least one copy of the dominant allele, they will express the trait. In this scenario, both parents are heterozygous, meaning they each carry one dominant allele and one recessive allele.
Since both parents are heterozygous, they each have a 50% chance of passing on the dominant allele (D) and a 50% chance of passing on the recessive allele (d) to their offspring.
To calculate the probability of their child having dimples, we can use a Punnett square to determine the possible genotypes of their offspring.
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Which of the following would result in fused or unfused tetanus compared to a single muscle twitch?
A) threshold stimulus and single stimuli
B) decreasing the stimulus frequency or increasing the stimulus frequency
C) increasing the stimulus frequency
D) decreasing the stimulus frequency
Answers
Increasing the stimulus frequency would result in fused or unfused tetanus compared to a single muscle twitch (Option C).
What is a single muscle twitch?A single muscle twitch can be defined as the contraction of the muscle in particular environmental conditions, which is well known to show variation in muscle tension.
A single muscle twitch is also known to have three well marked phases which include the latent period in which the muscle maintains normal steady conditions, the contraction state phase in which it shortness to produce a particular movement of the tissue and finally the relaxation stage period in which the muscle adopts tis normal length.
Therefore, with this data, we can see that a single muscle twitch is a muscle contraction period that includes different phases such as the relaxation stage phase where the muscle adopts its length and the contraction stage where it contracts.
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starting with parent material list steps that lead to formation of an a-horizon
Answers
Answer:
Explanation:sequence copy the graphic organizer below. starting with parent material, list steps that lead to the formation of an a-horizon
in a centrifuged blood sample, the buffy coat between the formed elements and the plasma contains
Answers
In a centrifuged blood sample, the buffy coat between the formed elements and the plasma contains white blood cells (leukocytes) and platelets (thrombocytes).
Leukocytes and leucocytes are other names for white blood cells (WBC). They are immune system cells that are primarily responsible for: Safeguarding and battling against attacking microorganisms. boosts the production of the hormone progesterone.
They shield you from disease and illness. White blood cells are your immune system's cells. They are, in a sense, always at war. They move through your circulatory system to battle infections, microorganisms, and other unfamiliar intruders that undermine your wellbeing.
The fundamental capability of these cells is to safeguard the body from getting impacted by unfamiliar particles. At the point when a disease or unfamiliar molecule attacks the body, the WBC develops the antibodies and assaults the microorganisms to obliterate it. White platelets are otherwise called leucocytes or leukocytes.
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Which of the following list of words correctly shows the layers of Earth's interior in correct order from outside to the Earth's center?
a. Lithosphere, Asthenosphere, Crust, Outer Core, Inner Core
b. Crust, Asthenosphere, Mesosphere, Lithosphere
c. Lithosphere, Asthenosphere, Lower Mantle, Outer Core, Inner Core
d. Crust, Upper Mantle, Inner Core, Outer Core
e. Biosphere, Troposphere, Lithosphere, Hydrosphere
f. Hydrosphere, Atmosphere, Lithosphere, Biosphere
Answers
The correct order of layers of Earth's interior from outside to the Earth's center is:
a. Lithosphere, Asthenosphere, Crust, Outer Core, Inner Core.
Option A is the correct answer.
What is Earth's interior layers?This refers to the layers that make up the earth namely: the lithosphere, asthenosphere, lower mantle (also known as mesospheric mantle), outer core, and inner core The core makes ups 15 percent of the Earth's volume, and the mantle takes 84 percent. The remaining 1 percent is made up of the crust.
Earth's layers can be positioned according to chemical composition ( that is what they are made of) or mechanical properties (that is rock strength and elasticity).
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Why are offshore wind farms becoming more common then land based wind farms
Answers
Offshore wind farms are becoming more common than land-based wind farms due to several reasons. In this answer, we will discuss why offshore wind farms are gaining more popularity.
Firstly, offshore wind farms are less obstructive and intrusive than land-based wind farms. Offshore wind farms are usually located far from residential areas, unlike land-based wind farms, which may sometimes lead to complaints from local residents regarding noise and visual impact. With offshore wind farms, this is not a problem, and there are no visual impacts on the surrounding landscapes. Additionally, the noise generated by offshore wind farms is typically quieter, as the turbines are located further away from people.
Secondly, offshore wind farms have stronger and more consistent wind speeds. The wind speed over the ocean is usually stronger and more consistent compared to land. This is due to several reasons, including less turbulence over the ocean and no natural obstacles like mountains or trees that can obstruct the wind flow.
Thirdly, the scale of offshore wind farms is much larger than land-based wind farms. With more space available, wind farms can accommodate larger and more powerful turbines, generating more electricity. Larger wind turbines installed offshore have larger rotor diameters and can access stronger and more consistent winds, enabling them to generate more electricity than land-based turbines.
Finally, offshore wind farms have less visual impact than land-based wind farms. The turbines are much further away from the shore and are not visible to many people, so there is less visual impact. Offshore wind farms can be an attractive option for countries with limited land space and high electricity demand.
In conclusion, offshore wind farms are becoming more common than land-based wind farms due to their less obstructive nature, stronger and more consistent winds, larger scale, and less visual impact. These benefits make offshore wind farms an attractive option for countries seeking to generate more renewable energy and reduce carbon emissions.
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In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes.
Answers
In bacterial cells, the genetic material (DNA) is located in the nucleoid, which is a region within the cytoplasm that is not membrane-bound. The Correct option is D
Unlike eukaryotic cells, bacterial cells lack a true nucleus that houses their DNA. The nucleoid region is irregularly shaped and contains a single circular chromosome, which is responsible for carrying the genetic information of the cell.
The chromosome is not surrounded by a membrane, but is instead condensed and organized within the nucleoid. Other structures involved in protein synthesis, such as ribosomes, are also present in the bacterial cytoplasm, but they are not directly involved in storing or organizing the genetic material.
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pls help once i finish this i can sleep!!!!
Identify the brain stem in the diagram below.
C
A
D
B
Answers
The answer is A.
I wish you a restful sleep.
7. Why do molecules moving from high to low concentration need to use energy?
Answers
Answer:
During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP).
Explanation:
an earliest major event in embryonic formation is:
a.neurulation
b.somite formation
c. prechordal plate cell separation by mesoderm
d. gastrulation
e. notochordal process formation
Answers
The earliest major event in embryonic formation is gastrulation. Gastrulation is the process during which the cells of the blastula are rearranged into a three-layered structure known as the gastrula. Option (D).
The three layers are called the endoderm, mesoderm, and ectoderm, and they give rise to all the tissues and organs of the body. The process of gastrulation begins with the formation of the primitive streak, a groove that appears on the surface of the embryo. As cells move towards the primitive streak and through it, they become organized into the three germ layers, which will eventually differentiate into all the various tissues and organs of the body.
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In the human body, each hormone is regulated by certain genes. These genes are turned on at times and turned off at other times. Which best explains this process?
Genes are directly regulated by hormones found in the integumentary system.
a. Genes are regulated by hormones secreted by the endocrine system.
b. The regulation of genes is only affected by external factors.
c. The regulation of genes is directly controlled by the nervous system.
Answers
Answer:
c. The regulation of genes is directly controlled by the nervous system.
Explanation:
C.The regulation of genes is directly controlled by the nervous system.
In the human body, each hormone is regulated by certain genes. These genes are turned on at times and turned off at other times the best explains this process is the regulation of genes is directly controlled by the nervous system.Thus, the correct answer is C.
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There are very few native reptile and amphibian species in Maine. What abiotic factor limits their ability to survive there
Answers
The abiotic factor that limits the ability of native reptile and amphibian species to survive in Maine is the cold climate.
Reptiles and amphibians are ectothermic, meaning their body temperature is dependent on the environment. They require specific temperature ranges to carry out essential physiological functions. Maine has a predominantly cold climate, with long winters and low temperatures, which is unsuitable for most reptile and amphibian species.
Cold temperatures affect their metabolism, digestion, and overall physiological processes. Reptiles and amphibians rely on external heat sources to regulate their body temperature, and the limited availability of suitable warm microhabitats restricts their ability to survive and thrive in Maine.
Additionally, reptiles and amphibians require water for breeding and reproduction. Although Maine has lakes, rivers, and wetlands, the overall aquatic habitat may not provide the necessary conditions and resources needed for successful reproduction and development of these species.
In conclusion, the cold climate in Maine, coupled with limited warm microhabitats and potentially inadequate aquatic resources, serves as a significant abiotic factor that limits the ability of native reptile and amphibian species to survive in the region.
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List two of the potential implications of epigenetic research
Answers
The potential implications of Epigenetic research is that it raises privacy and confidentiality concerns because it has the potential to reveal a great deal of information about a person's likelihood of experiencing health issues and even whether they will pass the risk to their offspring. 1,4.
The risk of privacy loss due to unauthorized or required disclosures is increased by the growing use of interoperable, longitudinal, and comprehensive electronic health records and networks. 6. The term "genetic" is defined in a number of genetic privacy laws, particularly the State Genetic Privacy Laws passed in the United States, but these laws do not provide privacy protection for epigenetic information.
Thus, new privacy legislation may be necessary to safeguard this sensitive data.
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12 a fox locates its prey, usually a mouse, under the snow by slight sounds the rodents make. the fox then leaps straight into the air and burrows its nose into the snow to catch its next meal. in your calculations ignore the effects of air resistance.
Answers
Air resistance represents the forces that are in opposition to the relative motion of an object as it hands through the air. These drag forces act opposing to the oncoming flow velocity, thus delaying the object down.
What is Air resistance? Air resistance is a force created by air. When an object moves through the air, the force acts in the opposite direction. A lorry with a flat front will have high air resistance, whereas a sports car with a streamlined shape will have lower air resistance, allowing the car to travel faster. Air resistance, also known as drag, is a type of friction (a force that opposes motion) that occurs between an object and air. It is the force that an object feels as it moves through the air. The two fixed forces of nature that move on any object on Earth are air resistance and gravity.How to calculate dismiss the effects of air resistance?Given: h = 75cm = 0.75 m
Find: vi, t
The equations we can use
v = vi - 9.81 t
y = vi t - 4.905 t²
There's an additional piece of knowledge that we know. At the peak of the jump, when the fox is at height h, it has zero velocity:
0 = vi - 9.81 tp 0.75 = vi tp - 4.905 tp²
We are now left with two equations and two unknowns. We can solve for vi, the initial velocity.
vi = 9.81 tp
0.75 = 9.81 tp² - 4.905 tp²
0.75 = 4.905 tp²
tp = 0.391 seconds
vi = 9.81 tp = 3.84 m/s
That's one answer. Using the second equation :
y = vi t - 4.905 t²
0 = 3.84 t - 4.905 t²
0 = t (3.84 - 4.905 t)
t = 0, 0.783 s
So the fox leaves the snow at 3.84 m/s and disburses 0.783 seconds in the air.
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(a) Christina wants to increase the number of eggs per year by using selective breeding.
(i)Which two chickens should she breed together?
(ii) Christina chooses chickens to breed from the offspring.
Which ones should she choose?
Answers
Simple is a good word to describe the fundamental approach. It is likely that her daughters will likewise be effective layers if you breed from the hen that produces the most eggs. This is so because a hen's genes, which she gets from her parents, play a factor in determining how many eggs she lays.
How did chickens raised for meat become a product of selective breeding?Increased growth rate and higher meat output were the primary objectives of selective breeding in meat chickens in the 1960s (i.e. producing larger chickens in less time). These days, the strategy is much more balanced, with health and wellbeing of the breeding animals playing a key role.
Inbreeding, linebreeding, and outcrossing are methods used in animal breeding.
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I am holding $2 in dimes and quarters. There are 11 total
coins in my hand. How many are dimes and how many
are quarters?
Answers
Answer:
4 quaters and 2 quaters make up 50 cents then with the dimes you should have 5 dimes making it also 50 which also equals a dollar leaving you with 2 dollars
Explanation:
;)
Answer:
six quarters. five dimes
PLS HELP What are three types of natural selection that act on variation?
A) Stabilizing, directional, and disruptive
B) Physical, chemical, and organic
C) Genetic, hereditary, and environmental
D) None of the above
Answers
Stabilizing selection, directional selection and disruptive selection are the three types of natural selection.
What are these types of selection?
Natural selection is the process wherein organisms get better adapted to their environments and tend to survive and produce more offsprings. It is basically a mechanism of evolution which favors those organisms that can better adapt to their environment.
Directional selection: this theory states that an extreme phenotype (a characteristic or trait) is favored over other phenotypes and this causes the allele frequency to shift in favor of the extreme phenotype over time. A particular trait, if favorable, will be expressed in the population at the most beneficial frequency.
Stabilizing selection: in this type, meaning a non-extreme trait is favored instead of one of the two extreme traits. Stabilizing selection is said to be the most common mechanism for natural selection, because most traits do not change drastically over time.
Disruptive selection: This selection is bimodal. It favors both of the extreme traits in a population.
So therefore, stabilizing selection, directional selection and disruptive selection are the three types of natural selection.
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The image shows a chemical's formula.
Which statement describes the molecule?
HHHHHH
H-C-C-C-C-C-C-H
HHHHHH
It is organic and a hydrocarbon.
It is inorganic and a hydrocarbon.
It is organic only.
It is inorganic only.
Answers
The image is not clear. The correct image is attached below.
Answer:
It is organic and a hydrocarbon.
Explanation:
The given chemical formula represents a compound called hexane.
Hexane is a volatile organic compound. It is an unbranched alkane and hydrocarbon constitute of six carbon atoms and 14 hydrogen atom having molecular formula C6H14.
It functions as a neurotoxin and non-polar solvent.
Hence, the correct option is A. It is organic and a hydrocarbon.
Answer:
A
Explanation:
Why is gene expression essential in the evolutionary progression of multi-cellular eukaryotes? Use the editor to format your answer
Answers
Gene expression is essential for the evolutionary progression of multicellular eukaryotes as it drives cellular differentiation, tissue specialization, adaptation to the environment, and the generation of genetic diversity.
Gene expression is essential in the evolutionary progression of multicellular eukaryotes due to its critical role in regulating the development, differentiation, and specialization of cells. Gene expression refers to the process by which information encoded in genes is utilized to produce functional gene products, such as proteins or non-coding RNAs. In multicellular organisms, different cell types with distinct functions and characteristics arise from a single fertilized egg cell through a process known as cellular differentiation. Gene expression controls this process by activating or repressing specific genes in a temporal and spatial manner. It allows cells to acquire specialized functions and form complex tissues and organs, which are necessary for the survival and adaptation of multicellular organisms in their environments.
Through gene expression, multicellular eukaryotes can evolve by generating new traits, improving their ability to respond to environmental challenges, and adapting to changing conditions. It enables the development of diverse cell types and tissues, such as muscles, nerves, and organs, which enhance organismal complexity and functionality.Furthermore, gene expression plays a crucial role in the response to evolutionary pressures and the generation of genetic diversity. It allows organisms to adapt to new ecological niches, respond to selective pressures, and undergo adaptive evolution.It enables the development of complex organisms with diverse functions, contributing to their survival and success in diverse ecological settings.
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