The ________ nerve innervates the trapezius, sternocleidomastoid, and pharynx muscles.
Answers
Along with the laryngeal musculature, the XI nerve also directly innervates the trapezius and sternocleidomastoid muscles.
What nerve innervates the trapezius?The motor function of the trapezius is innervated by cranial nerve XI. The scapula is stabilized and moved by the trapezius muscle. The upper fibers have the ability to stretch the neck and raise and rotate the scapula upward.
The sternocleidomastoid muscle is fed by what?A branch of the superior thyroid artery (42%), the external carotid artery (23%), or branches of both (47%), give blood to the middle part of the SCM muscle. The stylopharyngeus muscle, which raises the pharynx and larynx, receives motor innervation from the glossopharyngeal nerve, as was previously mentioned.
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Related Questions
Include answers for part A and B.
A. What is the name of the functional group shown below?
B. Name an example of a type of molecule in which you might find this functional
group.
0
i 인
O—P=O
-
0
Answers
Answer:
B. Name an example of a type of molecule in which you might find this functional group
Explanation:
increasingly, research suggests that stress shortens the length of telomeres, or the protective ends of chromosomes. what biological process has recently been shown to explain this effect?
Answers
The biological process that has recently been shown to explain the effect of stress shortening the length of telomeres is called oxidative stress.
Oxidative stress is a condition that occurs when there is an imbalance between the production of reactive oxygen species (ROS) and the ability of the cell to neutralize them through antioxidant defense mechanisms.
This results in cellular damage and can lead to the formation of oxidative products such as reactive oxygen species and reactive nitrogen species and telomere shortening. These reactive species can cause damage to cellular components such as proteins, lipids, and DNA, which can eventually lead to cell death or disease if not properly managed by the cell's antioxidant defense mechanisms.
Oxidative stress has been implicated in a wide range of health conditions, including cardiovascular disease, cancer, neurodegenerative disorders, and aging.
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if you performed a pcr experiment starting with only one copy of double-stranded dna, approximately how many molecules would be produced after 15 cycles of amplification?
Answers
The number is 32,768
What is the number of molecules would be produced after 15 cycles of amplification?The number of molecules of DNA produced after a certain number of cycles in a PCR experiment can be calculated using the formula:
N = 2^n * N0
where N is the final number of molecules, n is the number of cycles, and N0 is the initial number of molecules.
If we start with only one copy of double-stranded DNA and run 15 cycles of amplification, the number of molecules produced would be:
N = 2^15 * 1
N = 32,768
Therefore, after 15 cycles of PCR amplification, approximately 32,768 molecules of double-stranded DNA would be produced from the original single copy.
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What are the 10 different methods used to control hazards and risk?
Answers
The various methods to control hazards and risks are using standard tools and equipment, working in the presence of expert and working in authorized labor conditions.
Hazards are the unintentional accidents which may cause loss of life and property. Risks are the abrupt conditions which occur and has the potential to cause damage.
The ten different ways to control hazards and risks are:
Always using hard hats, helmets or gloves while working.Using proper ventilation, well illuminated lights while working.Using tools and equipment in areas where manual work is risky.Always working under the expert contractor.Using standard quality products.Avoid machinery which is under repair. Using safety measures while site is under construction by using sign boards and flash light.Pasting emergency contacts for quick use.Assigning a doctor and ambulance at work site to ensure quick redressal.Avoid working in isolation or areas of explosive danger.Learn more about hazards at:
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down syndrome and other disorders where there are extra or missing copies of chromosomes are the consequence of:
Answers
The down syndrome and other disorders where there are extra or missing copies of chromosomes are the consequence of genetic mutations or abnormalities during cell division.
Humans have 23 pairs of chromosomes, which contain our genetic information.
However, in some cases, errors can occur during cell division, resulting in extra or missing copies of chromosomes. In the case of down syndrome, there is an extra copy of chromosome 21, which can cause developmental delays and intellectual disabilities.
Other disorders, such as Turner syndrome and Klinefelter syndrome, result from missing or extra copies of sex chromosomes, respectively.
The underlying cause of down syndrome and other disorders where there are extra or missing copies of chromosomes is genetic mutations or abnormalities during cell division.
Understanding the genetic basis of these disorders can aid in their diagnosis and management.
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You have a population in hardy-weinberg equilibrium for the m and n alleles. These alleles are codominant. The allele frequency of m is 0. 4. What is the frequency of heterozygotes in the population?
Answers
You have a population in hardy-Weinberg equilibrium for the m and n alleles. These alleles are codominant. Allele frequency of m is 0. 4. 0.48 is the frequency of heterozygotes in the population.
An allele frequency has been computed by dividing the total quantity of copies of each of the alleles at that specific genetic location in the population by the number of points of time the allele of interest has been observed in a population.
The frequency of each genotype is typically calculated by dividing the population's total count of individuals by the number of people who have that genotype.
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Please answer quickly, timed test!!
Which term is correctly paired with its role in the body?
A) insulin – a sugar that regulates blood glycogen levels
B) ADP – a molecule that releases energy when it forms ATP
C) glycogen – a hormone found in blood that regulates blood glucose levels
D) glucose – a sugar found in blood that can be broken down to produce ATP
Answers
Answer:
D.
Explanation:
insulin is not found in the body
Answer:
D
Explanation:
because glycogen is NOT a form of sugar so insulin wouldn't regulate it the other person knows nothing about the body (no offense)
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The roof of an eco-house is covered with soil. Covering the roof with soil decreases the thermal conductivity of the roof. What are the two of the choices listed below are advantages of having a roof with a lower thermal conductivity?
1) Less energy is needed to heat the house.
2) The rate of energy transfer by conduction is greater.
3) The roof is a better insulator.
4) The roof is less likely to leak.
5) Weather will have a greater effect on the temperature of the house.
Answers
Answer:
To understand how insulation works it helps to understand heat flow, which involves three basic mechanisms -- conduction, convection, and radiation. Conduction is the way heat moves through materials, such as when a spoon placed in a hot cup of coffee conducts heat through its handle to your hand. Convection is the way heat circulates through liquids and gases, and is why lighter, warmer air rises, and cooler, denser air sinks in your home. Radiant heat travels in a straight line and heats anything solid in its path that absorbs its energy.
Most common insulation materials work by slowing conductive heat flow and convective heat flow. Radiant barriers and reflective insulation systems work by reducing radiant heat gain. To be effective, the reflective surface must be in contact with an air space.
Answer:
Explanation:
A thick layer of material with a low thermal conductivity reduces the rate of heat transfer from the ceiling into the roof space.
what was the evolutionary pressure that resulted in colorful flowers?
Answers
The evolutionary pressure that resulted in colorful flowers can be traced back to the need for plants to attract pollinators, such as bees, butterflies, and birds, in order to reproduce.
The color and scent of flowers serve as important signals to attract pollinators. Brightly colored flowers, such as red, orange, and yellow, are more visible to pollinators, while flowers with strong scents are more easily detected by them. Over time, flowers evolved to produce a wide range of colors and scents, with each color and scent combination attracting specific types of pollinators. For example, red flowers are often pollinated by hummingbirds, while blue flowers are more likely to be visited by bees. Thus, the ability to produce colorful flowers with distinct scents allowed plants to better compete for pollinators, leading to increased reproductive success and the evolutionary diverse array of flower colors and shapes.
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A place where two tectonic plates slide laterally past each other is called a_______ boundary and is often associated with _______ faults
Answers
Explanation:
When two tectonic plates slide past each other, the place where they meet is a transform or lateral fault. The San Andreas Fault is one of the best examples of lateral plate motion
the enzyme dna covalently links nucleotides to synthesize new dna strands together during dna replication. t or f
Answers
The assertion is true. During DNA replication, the enzyme DNA Polymerase covalently joins nucleotides to create new DNA strands.
Semi-conservatism applies to DNA replication. The double helix's strands serve as models for the creation of new, complementary strands. DNA polymerases, which require a template and a primer (beginning) and synthesise DNA in the 5' to 3' orientation, are the enzymes responsible for creating new DNA.
Only strands or primers of DNA or RNA that are base paired with the template can have nucleotides added to them by the DNA synthesis enzyme, DNA polymerase. The covalent binding of the incoming nucleotide to the primer requires the enzyme DNA polymerase.
Therefore, we can conclude that the proposition is accurate. During DNA replication, the enzyme DNA Polymerase covalently joins nucleotides to create new DNA strands.
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which life process carried out hy a green plant is in the diagram below
Answers
The scientific method ensures that results are bias-free
true
false
Answers
glycolysis, which provides energy by breaking down carbohydrates like glucose, relates to activities lasting __________.
a. generally less than 3 minutes
b. 20-30 minutes
c. 3-4 hours
d. all day
Answers
Glycolysis, which provides energy by breaking down carbohydrates like glucose, relates to activities lasting Option A. Generally less than 3 minutes.
Glycolysis is a cytoplasmic pathway that breaks down glucose into two 3-carbon compounds and generates electricity. Glucose is trapped through phosphorylation, with the help of the enzyme hexokinase. Adenosine triphosphate (ATP) is used in this reaction and the product, glucose-6-P, inhibits hexokinase.
Carbohydrates, or carbs, are sugar molecules. together with proteins and fat, carbohydrates are one of 3 fundamental vitamins located in food and drink. Your frame breaks down carbohydrates into glucose. Glucose, or blood sugar, is the main supply of power on your body's cells, tissues, and organs.
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How could human activity disrupt the habitat and niche of an organism like the gray fox?
Answers
Answer:
Disruption such as deforestation or mining can destroy the habitat, leading to water pollution, mud slides, and loss of soil. With the habitat affected, the animals the grey fox feeds on, such as rabbits or mice, will be affected as well, leading to the grey fox losing a source of food. By limiting the diet of the grey fox, other predators will be more likely to compete with the grey fox, disrupting its niche.
If the sugar concentration in a cell is 4% and the concentration in a cell’s environment is 2%, how can the cell obtain more sugar?
Answers
For a cell to obtain more sugar the cell must use active transport to pump the sugar inside it .
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration which occur against the concentration gradient . So , it requires cellular energy to achieve this action.
Main function of active transport is involves the movement of molecules from a region of lower concentration to a region of higher concentration with help of energy in form of ATP. examples of active transport include the absorption of glucose in the intestine of the human body and the uptake of minerals or ions into the root hair cells of plants.
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If you are given a course of 10 days' worth of antibiotics, how many days should you take them for?
Answers
Match the descriptions with the type of crime scene search pattern.
zone
spiral
line
investigators move from one side of the
crime scene to another in a single direction
arrowRight
crime area is divided into multiple square
areas and each is assigned to an investigator
arrowRight
from the outside or the center of the crime
scene,the investigator walks down a circular
path and works their way inward or outward
arrowRight
Answers
Answer:
1. Line.
2. Zone.
3. Spiral.
Explanation:
In crime scene investigation, individuals who are certified professionals (investigators) in collecting evidence after an unfortunate incident such as murder has occurred use the following strategic investigative methods or techniques;
1. Line method: investigators move from one side of the crime scene to another in a single direction. This method is best used in areas that comprises of obstacles e.g rocks, trees, pillars etc.
2. Zone method: crime area is divided into multiple square areas and each is assigned to an investigator. This method is best used in buildings such as hospital, office, school etc., because these investigators are assigned to each zone of the divided crime area.
3. Spiral method: from the outside or the center of the crime scene, the investigator walks down a circular path and works their way inward or outward.
Answer:
1. Line.
2. Zone.
3. Spiral.
Explanation:
hope this helps.
29 Earth is made up of layers with different characteristics and compositions. Which layer is made up of very dense, liquid metal? A. crust B. inner core C. mantle D. outer core
Answers
The correct answer is D. outer core.
The outer core is a layer of the Earth that is located between the mantle and the inner core. It is made up of very dense, liquid metal, mostly iron and nickel, which is in a molten state due to the high temperatures and pressure at that depth. The outer core is about 2,300 km thick, and it is responsible for generating the Earth's magnetic field. The flow of liquid metal in the outer core creates electric currents, which in turn generate the magnetic field. This magnetic field is important because it protects the Earth from harmful solar radiation and allows for the existence of life on our planet. Scientists have learned about the properties of the outer core by studying seismic waves that pass through it during earthquakes. By analyzing the behavior of these waves, they have been able to determine that the outer core is indeed made up of liquid metal, and that it is a crucial component of the Earth's structure and function. In summary, the layer of the Earth that is made up of very dense, liquid metal is the outer core, which is located between the mantle and the inner core. This layer is important for generating the Earth's magnetic field, which protects the planet from harmful solar radiation and allows for the existence of life.
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Lab #
For Each graph below:
a) LABEL each axis.
b) PLOT your points and CIRCLE/SQUARE each enzyme as directed. Give each a specific COLOR
c) LABEL each enzyme on the graph for clarity.
0°℃
10°C
20°C
30°C
40°C
Circle Plots
Effect of Temperature on Enzyme A Action
Temperature
Rate of Reaction
30°C
40°C
50°C
60°C
70°C
Graphing The Effect of Variables on Enzyme Action
0 mg/s
6 mg/s
10 mg/s
12 mg/s
0 mg/s
Square Plots
Effect of Temperature on Enzyme B Action
Temperature
Rate of Reaction
0 mg/s
4 mg/s
13 mg/s
14 mg/s
0 mg/s
Rate of reaction
a. What is the optimum temperature that enzyme A functions best?
b. What happens to the enzyme activity of A after 30 degrees?
Effect of Temperature on Enzyme Action
c. What is the optimum temperature that enzyme B functions best?
d. What happens to the enzyme activity of B before it reaches 60 degrees?
e. At which temperature do both enzyme A and B both function?
f. Which temperatures do neither enzyme A or B function under?
Comperature (℃)
Answers
The optimum temperature at which enzyme A functions best is 30 °C
The enzyme activity of A decreases after 30 degrees.
The optimum temperature that enzyme B functions best is 60 °C
The enzyme activity of B increases before it reaches 60 degrees.
The temperature at which both enzyme A and B function is 35 °C
The temperatures at which neither enzyme A or B functions are 0 °C and 40 °C.
What are enzymes?Enzymes are biological catalysts that speed up the rate of chemical reactions but remain unchanged chemically at the end of the reactions. enzymes are usually proteins and are therefore sensitive to temperature changes.
The molecules that enzymes may work upon are known as substrates, and the enzyme changes the substrates into new molecules known as product.
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Describe how the elk population affects the size and growth of the trees?
Answers
Please further explain.
Explanation:
The population of plants was reduced because of the overgrazing of plants by elk. Overgrazing occurred because the elk population was no longer controlled or checked by the wolves (their predator).
PROJECT: ICE EROSION
Questions
How long was the ice flow in the first tray?
After the ice melted, how was the sand in the first tray different from the sand in the second tray?
What was the sand depth in the first tray at the beginning of the experiment? What was the sand depth at the end? Answer these questions for the second tray.
Did erosion take place in either tray? Explain your answer.
How do you think the results would change if the trays were propped up two inches?
URGENT PLS ANSWER!! i will mark brainliest
Answers
Ice Erosion took place in tray 1 because of the melting of ice but there was no erosion occurring in tray 2 since there was no ice added.
What is erosion?Erosion is the washing away of the topmost surface of the soil by agents of erosion.
The agents of erosion are;
windwatericegravityIce erosion refers to the erosion that occurs due to the melting of ice.
Ice erosion is also known as glacial erosion.
Considering the given experiment;
If two trays containing sand are obtained. On tray 1, ice was added but no ice was added to tray 2.
On melting of the ice in tray 1, the water from the melting of ice will cause erosion of the sand in tray 1, but tray 2 will not have erosion occurring.
In conclusion, ice is an agent of erosion as melting ice will cause erosion of soil.
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Humans feel hungry when their empty stomachs contract and when glucose levels in the blood drop. Both of these
situations stimulate neurons that send messages to the brain which are interpreted as hunger. What body systems are
involved in this process as described?
digestive, muscular, integumentary, and respiratory
digestive, excretory, integumentary, and respiratory
circulatory, excretory, nervous, and skeletal
circulatory, digestive, muscular, and nervous
Answers
which of the following substances is a provitamin or a precursor for a vitamin?
Answers
The substance that is a provitamin or a precursor for a vitamin is beta-carotene.
Beta-carotene is a substance that acts as a provitamin or a precursor for vitamin A. Provitamins are compounds that can be converted into active vitamins by the body through metabolic processes. In the case of beta-carotene, it is converted into vitamin A through enzymatic reactions. Vitamin A plays a crucial role in maintaining healthy vision, supporting the immune system, and promoting proper growth and development.
Beta-carotene belongs to a group of pigments called carotenoids, which are naturally occurring compounds found in fruits and vegetables. It is particularly abundant in brightly colored fruits and vegetables like carrots, sweet potatoes, spinach, and kale. When we consume these foods, our bodies convert the beta-carotene present in them into vitamin A as needed.
The conversion of beta-carotene to vitamin A occurs primarily in the small intestine and is facilitated by an enzyme called beta-carotene 15,15'-dioxygenase. This enzyme cleaves the beta-carotene molecule, producing two molecules of retinaldehyde, which is then further metabolized into the active form of vitamin A, retinol.
Beta-carotene is an essential nutrient for human health, and its conversion to vitamin A provides numerous benefits. Vitamin A is essential for maintaining healthy vision, especially in dim light conditions, as it contributes to the synthesis of a pigment called rhodopsin, which is necessary for the perception of light. It also plays a role in the growth and development of cells, supports immune function, and acts as an antioxidant, protecting cells from damage caused by harmful free radicals.
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Which of the following is not a product of the electron transport chain?
A. NAD+
B. Oxygen
C. ATP
D. FAD
E. Water
Answers
The product of the electron transport chain that is not listed is: A. NAD+
During the process of oxidative phosphorylation, which occurs in the electron transport chain, electrons are transferred along a series of protein complexes embedded in the inner mitochondrial membrane. This electron flow ultimately leads to the production of ATP, which is the energy currency of the cell.
B. Oxygen is the final electron acceptor in the electron transport chain. It accepts electrons and combines with protons to form water (E), which is an essential product of this process.
C. ATP is synthesized through chemiosmosis, driven by the electron flow in the electron transport chain. It is a direct product and serves as the main energy source for cellular processes.
D. FAD (flavin adenine dinucleotide) is a coenzyme that carries electrons in the electron transport chain, similar to NADH. While FAD is not directly listed as a product, it participates in the electron transfer reactions.
A. NAD+ is not a product of the electron transport chain but rather a coenzyme that functions as an electron carrier. NAD+ accepts electrons during glycolysis and the citric acid cycle, and it is then reduced to NADH. NADH, in turn, donates electrons to the electron transport chain for ATP synthesis.
Overall, the electron transport chain produces ATP, water, and NADH as important products, while NAD+ is not directly produced but rather participates in the electron transfer reactions.
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Help, I need answer for this, and I don’t understand
Answers
Answer:
Read the Explanation below.
Explanation:
They could first test the density of the skeleton to see if it is real or not (bone has a different density and weight than plastic). They could also measure a sample of one part of the skeleton and see if it contains skeletal tissue (if it does, it is a from a human being).
Plants take in and release oxygen gas
Answers
Answer:
Photosynethesis
Explanation:
which is a joint in which articulating bones are joined by long strands of dense regular connective tissue?
Answers
A joint in which articulating bones are joined by long strands of dense regular connective tissue is a fibrous joint, also known as a synarthrosis.
Fibrous joints are characterized by their minimal movement and high stability. The bones in fibrous joints are connected by collagen fibers or other dense connective tissue, which provides strength and resistance to tension or twisting. Examples of fibrous joints include sutures between the bones of the skull, which are connected by dense regular connective tissue, and syndesmoses, such as the joint between the tibia and fibula in the lower leg, which are connected by interosseous membranes made of fibrous connective tissue. Fibrous joints are important for maintaining the structural integrity of the skeleton and protecting vital organs from injury.
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how to create petroleum
Answers
Answer:
petroleum is formed when large quantities of dead organisms, mostly zooplankton and algae, are buried underneath sedimentary rock and subjected to both intense heat and pressure.
Which of the following would occur if blood volume increases
outside of the normal range (is too high)? Check all that
apply.
A. ADH secretion would be inhibited
B. More urine is produced to remove ex
Answers
If blood volume increases ADH secretion would not be inhibited, This statement is incorrect. More urine is produced to remove excess fluid, This statement is correct
A. ADH (antidiuretic hormone), also known as vasopressin, is released by the pituitary gland in response to high blood osmolality or low blood volume. ADH acts on the kidneys to promote water reabsorption and reduce urine production. However, when blood volume is excessively high, it would not inhibit ADH secretion. In fact, ADH secretion would typically increase in response to low blood volume or increased blood osmolality to help retain water and reduce urine output.
B. When blood volume is too high, the kidneys respond by increasing urine production to remove the excess fluid from the body. The kidneys play a vital role in maintaining fluid balance in the body. They filter the blood and regulate the composition and volume of urine produced. Increased blood volume triggers the release of atrial natriuretic peptide (ANP), a hormone that promotes the excretion of sodium and water. This, in turn, increases the production of urine, helping to remove the excess fluid and restore blood volume to normal levels.
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