Which sensory receptors are involved in hearing?
A mechanoreceptors
B photoreceptors
C chemoreceptorS
D thermoreceptors?

Please answer ASAP!​

Answer:

\(\boxed{Option \ D}\)

Explanation:

Glycoproteins have oligosaccharides covalently attached to aspartate residues (type of amino acids) . They are not unbranched oligosaccharides.

Answer:

\(\boxed{\mathrm{Option \: D}}\)

Explanation:

Glycoproteins have oligosaccharides covalently attached to aspartate residues.

They are proteins which contain oligosaccharide chains that are covalently attached to the amino acid side-chains.

Answer: it's B i think i hope it helps

Implantantation lasts around 7 days once fertilization has occurred.

Answer:

Image result for What would be different about earth today if Pangea never broke

The rain which comes from the ocean wouldn't be able to travel far enough inland — leaving parts of Pangea practically uninhabitable by humans and other species. And weather up north would be different too, with Russia being much warmer than it is today.

Explanation:

Answer:

The world would just be a large clump of land with little to no space between country's

Explanation:

This could result in many situation, like more fighting over land, less need for boats, and many other situations

Answer:

wheat

Explanation:

because it is producer

Answer: The action from a force can cause an object to move or can speed up accelerate, to slow down (decelerate), to stop, or to change direction. Since any change in velocity is considered acceleration, it could be said that a force on an object results in the acceleration of a object.

Explanation:

Answer:

(B) The direction of the motion

Explanation:

Hormones can be grouped into different categories based on their chemical structure. Here's a breakdown of the categories you've mentioned. Amino acid tyrosine derivatives: These hormones are derived from the amino acid tyrosine. Examples include thyroid hormones and epinephrine adrenaline.

Amino acid tryptophan derivatives: These hormones are derived from the amino acid tryptophan. An example is melatonin, which regulates sleep and wakefulness. Peptide hormones: These hormones are composed of amino acids linked together. Examples include insulin and glucagon, which regulate blood sugar levels. Short peptide chains This category doesn't accurately describe a specific group of hormones. However, small peptides like oxytocin (which isn't a steroid) are also considered peptide hormones, playing a role in social bonding, reproduction, and childbirth. In summary, hormones can be categorized based on their chemical structure, and examples include tyrosine derivatives thyroid hormones, epinephrine, tryptophan derivatives melatonin, peptide hormones insulin, glucagon, and steroids estrogen, progesterone.

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The process that best describes a physical change that occurs during digestion is "chewing food to break down large pieces so they can be swallowed."

During digestion, the first step is the mechanical breakdown of food in the mouth. This process is known as chewing, and it helps to break down large food particles into smaller, more manageable pieces. Chewing also mixes the food with saliva, which contains enzymes that start the process of breaking down carbohydrates.

Chewing is essential because it increases the surface area of the food, allowing the digestive enzymes to work more efficiently. It also helps to mix the food with saliva, which contains enzymes that break down carbohydrates. As you chew, the food becomes soft and moist, making it easier to swallow and move through the digestive tract.

Once the food is swallowed, it travels down the esophagus and enters the stomach. In the stomach, stomach acid plays a role in breaking down proteins, and bile helps in the breakdown of fats. However, these processes are not considered physical changes since they involve chemical reactions rather than a change in the physical properties of the food.

In summary, the process of chewing food to break down large pieces so they can be swallowed is the physical change that occurs during digestion.

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Multiple Access Protocols are used in network communication to manage access to a shared medium. They provide a set of rules for devices to transmit data without collisions. Three examples of Multiple Access Protocols are channel partitioning protocols, random access protocols, and "taking turns" protocols.

Channel partitioning protocols divide the available channel or bandwidth into separate time slots or frequency bands, allowing different devices to transmit data during their designated time or frequency slot. An example of a channel partitioning protocol is Time Division Multiple Access (TDMA), where each device is allocated a specific time slot to transmit data.

Random access protocols do not divide the channel but instead, allow devices to transmit data whenever they have data to send. Examples of random access protocols include Carrier Sense Multiple Access with Collision Detection (CSMA/CD), used in Ethernet networks, and Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA), used in wireless networks.

"Taking turns" protocols, also known as controlled access protocols, allow devices to take turns in accessing the shared medium. An example of a "taking turns" protocol is the Token Ring protocol, where a token is passed from one device to another in a sequential manner, granting the device holding the token the right to transmit data.

These Multiple Access Protocols help regulate access to a collision domain, ensuring efficient and fair data transmission among multiple devices sharing the same network segment.

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Answer:

the process of green plants make food using carbon dioxide and water in the presence of sunlight and chlorophyll present in the leaves

When an action potential reaches a synaptic knob, the membrane depolarizes, causing ion channels to open. As a result, calcium ions enter the cell. This influx of calcium ions plays a crucial role in the process of neurotransmitter release and the propagation of the signal to the next neuron.

When an action potential reaches a synaptic knob, the depolarization of the membrane causes ion channels to open, allowing calcium ions to enter the cell. This influx of calcium triggers the release of neurotransmitters from the synaptic vesicles into the synaptic cleft. Once the neurotransmitters bind to their receptors on the post-synaptic neuron, ion channels open and ions such as sodium or potassium flow in or out of the cell, causing a change in the membrane potential. Eventually, ion channels open and calcium flows out of the cell, which helps to reset the system and prepare for the next action potential.

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Given the statement, "Recent molecular evidence suggests that the ancestors of the Aboriginal Australians may have arrived on that continent much earlier than originally thought, suggesting that there may have been two waves of human migration out of Africa instead of only one," the best next step for scientists considering this alternative explanation would be to look for fossil evidence that might support this explanation.

An explanation for the same is given below: As per the given statement, the ancestors of the Aboriginal Australians may have arrived on that continent much earlier than originally thought, suggesting that there may have been two waves of human migration out of Africa instead of only one.

Since this is an alternative explanation for what is already known, the best next step for scientists is to look for fossil evidence that might support this explanation. They need to find and analyze fossils of those early humans, which would provide evidence for this alternative theory.

In addition, it would also be essential to test the molecular evidence further and conduct more research to find any possible inconsistencies. This could provide scientists with a more in-depth understanding of how early humans migrated from Africa to different parts of the world. Thus, the best option would be to look for fossil evidence that might support this explanation.

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Answer:

Explanation:

I believe it is tyrosinase.

All of the functions named are functions of the kidney.

The kidney is an important organ in the body and it has several functions which include:

I) Regulation of blood pressure. This is achieved by an increase in sodium and water consumption leading to an increase in extracellular fluid volume. This increases blood volume returning to the heart, increasing cardiac output, and it ends up increasing blood pressure.

II) Regulation of blood ph by adjusting the amounts reabsorbed and secreted, the kidneys balance the bloodstream’s pH.

III) Regulation of water and electrolyte concentrations in the blood by controlling sodium and water balance. When arteries pressure increases, the nephron reduces sodium and water reabsorption, increasing their excretion, while with a decrease in blood pressure, the nephron increases sodium and water reabsorption.

IV) Secretion of renin and erythropoietin . The kidney's endocrine function is carried out through the secretion of important hormones: renin, prostaglandins, erythropoietin, and calcitriol.

All of the above choices are functions of the kidney hence there is none that is not a function.

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A person who has an extra copy of a chromosome is said to have Trisomy.

Trisomy is a chromosomal disorder caused by the presence of an additional chromosome in the cell nuclei of an individual beyond the typical two copies of each chromosome that people usually have (one inherited from each parent). The chromosomal abnormality is most frequently caused by nondisjunction, the failure of the chromosome pairs to divide equally during meiosis, and the consequent occurrence of a gamete that is monosomic or trisomic. Trisomy is a chromosomal disorder caused by the presence of an additional chromosome in the cell nuclei of an individual beyond the typical two copies of each chromosome that people usually have (one inherited from each parent). The chromosomal abnormality is most frequently caused by nondisjunction, the failure of the chromosome pairs to divide equally during meiosis, and the consequent occurrence of a gamete that is monosomic or trisomic. Nondisjunction is the term used to describe the improper separation of chromosomes during cell division.

Hence option A is correct.

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The tension in the rope is calculated as 33.7 N.

Weight of sled and fossil, w = 972 N Inclination angle of slope, θ = 19.8°

Speed of sled, v = 1.92 m/s

Coefficient of kinetic friction between sled runners and snow, μ = 0.107

To find:

Tension in the rope, T The forces acting on the sled are the gravitational force (Fg), the normal force (Fn) and the force of friction (Ff). The normal force is perpendicular to the slope and equal to the component of the gravitational force perpendicular to the slope. The force of friction is parallel to the slope and opposite the direction of motion.

The net force acting on the sled is given by the expression:

F net = ma

Since the sled moves with constant velocity, a = 0.

Therefore, F net = 0. F net = Fg sinθ - Ff = 0⇒ Fg sinθ = Ff

Since the speed of sled is constant, work done by tension in the rope is equal to work done by frictional force.

Hence, T = Ff = μFn

Where F n = Fg cosθ = w cosθ

Putting all the values,

T = μw cos θ sinθ= sin 19.8°cos 19.8°= 0.3365T = 0.107 × 972 × 0.3365T = 33.7 N

The rope is 33.7 N. The given problem is related to the tension in the rope. The tension in the rope is calculated as 33.7 N.

To bring down the fossil safely down the slope, the tension in the rope is 33.7 N. The gravitational force is acting perpendicular to the slope and the force of friction is acting parallel to the slope. The normal force is the component of gravitational force acting perpendicular to the slope. The sled moves down the slope with a constant velocity. The force acting on the sled is equal and opposite to the force of tension in the rope. The force of friction is given by the expression,

Ff = μFn,

where Fn = Fg cosθ = w cosθ.

Therefore, the tension in the rope is calculated as 33.7 N.

To bring down the fossil safely down the slope, the tension in the rope must be 33.7 N.

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multifactorial. These environmental factors include nutrition, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens. The term "phenotype" describes a person's observable characteristics, such as height, eye colour, and blood ratio.

An organism's phenotypic responses to its surroundings can be thought of as a mapping from the environment space to the phenotype space. A specific environmental stimulus that the organism encounters may cause a specific phenotypic to emerge. We examine that the alleles of the parent organisms and predict how frequently the offspring will exhibit those genes to determine a phenotypic ratio. Most of the time, we are aware of the expression and appearance of the alleles.

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Answer: See below

Explanation: If molecules are small enough, then they should have an easier time diffusing across a semipermeable membrane because smaller molecules can physically fit through or in between parts of a membrane that bigger structures may have to be actively transported through.

This is only true, however, if the molecule, membrane, and solvent do not interact because of polarity or proticity, which is not mentioned in the question so therefore should not be relevant.

Answer:

("then"): Molecules will diffuse through the semipermeable membrane

(“because”): they can pass through the membrane’s tiny openings

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Oxidative phosphorylation is the only reaction in the citric acid cycle that produces ATP by substrate-level phosphorylation.

The citric acid cycle (CAC), often referred to as the Krebs cycle or the TCA cycle, is a sequence of chemical reactions that oxidize acetyl-CoA, which is obtained from carbs, lipids, and proteins, to release stored energy. Instead of fermenting, organisms that respire use the Krebs cycle to produce energy, whether through anaerobic or aerobic respiration. The cycle also supplies precursors of certain amino acids and NADH, a reducing agent that is employed in a variety of other processes.

The electron transport chain is where NADH and FADH₂ are transferred during oxidative phosphorylation, where their high-energy electrons will ultimately fuel the synthesis of ATP.

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From what we know, we can confirm that a variation that makes a gene different in some way from other genes for the same characteristics is called a mutation.

All genes in an organism are coded through a series of nucleotides. Each gene has its own sequence of nucleotides that make it unique. A mutation is a change in this nucleotide sequence caused by either external forces such as UV light, or internal errors.

Therefore, given the definition described, we can confirm that a variation that makes a gene different in some way from other genes for the same characteristics is called a mutation.

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If the pituitary gland is damaged or removed, our growth and development are adversely affected.

Insulin reduces blood sugar levels.

The development of secondary sexual characteristics is directly related to gonads.

The pituitary gland is known as the master gland of the endocrine system because it controls many hormone glands in our body. Without Pituitary glands, the body wouldn't reproduce and grow properly and many other functions are not working properly in our body.

Insulin reduces the blood sugar levels in our body and provides glucose to the cell for the production of energy. When blood sugar levels are too low, the pancreas releases glucagon in the blood with help of insulin. Glucagon is a type of hormone that pancreas help to regulate your blood glucose levels. The liver release stored glucose which causes the blood sugar levels in the body to rise.

The pubertal changes in secondary sex characteristics like breast development, fat deposition, development of genitalia, changes in the larynx, and hair growth lead to increasing levels of gonads.

So we can conclude that our growth and development are adversely affected if the pituitary gland is damaged or removed.

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Answer: Monocot and Dicot

Explanation:

Monocots are seeds which have only one cotyledons. Plants having monocot seeds have parallel venation leaves (like lines running down the leaf). These seeds cannot be broken open. Dicot are seeds that have 2 cotyledons. Plants having dicot seeds have reticulate venation leaves (like veins). These seeds may be opened in two halves.

Answer:

In the follicular phase, the follicles grow inside the ovary. The ovulatory phase is the time of greatest fertility for women. In it, estrogen levels peak just before the egg is released. In the luteal phase, after ovulation the follicular structure that remains in the ovary reorganizes and becomes a gland known as the corpus luteum. The self-determined life of the corpus luteum causes it to degenerate after 14 days and end a menstrual cycle. At the end of the luteal phase, progesterone and estrogen levels drop and menstruation occurs.

Explanation:

The follicular phase is where follicles develop (fluid-filled cavities in the ovary that contain an undeveloped egg) that will eventually house the egg. For the development of follicles, the body sends a signal to the brain to start the production of follicle stimulating hormone (FSH), the follicles begin to develop and produce estrogen. In the ovulatory phase, the level of estrogen in the body continues to rise, causing a rapid rise in LH. This increase causes the secretion of proteolytic enzymes that will degrade the follicular tissue allowing the maturation process of the ovum and its release to finish, a fact known as "ovulation". Ovulation usually occurs between 24 and 36 hours after the LH surge, so luteinizing hormone is a good factor for measuring the period of maximum fertility and knowing the fertile days of the woman. In the luteal phase, the corpus luteum develops that will last until a possible pregnancy or menstruation occurs, starting the next cycle. The egg, after being released, travels through the fallopian tube to the womb. It can survive up to 24 hours and sperm up to 5 days inside the uterus, therefore the days before ovulation and the day of ovulation itself, which can be calculated with the ovulation calendar, are those of maximum fertility and higher chances of pregnancy. After ovulation, the follicle begins to contract but continues to produce progesterone and begins to produce estrogen in order to continue preparing the uterus to receive the embryo.

The division of time on the geologic time scale that is the longest is an eon, which is in option B, as an eon can span billions of years and is divided into eras, which are then divided into periods and epochs.

The geologic time scale is a system used by geologists and other scientists to divide the history of Earth into specific intervals of time based on major events and changes in the planet's geology, climate, and life forms. The geologic time scale is divided into four main categories: eons, eras, periods, and epochs. An eon is the largest and longest division of time on the geologic time scale, spanning billions of years.

Hence, the division of time on the geologic time scale that is the longest is an eon, which is in option B.

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Answer:

According to my search:

Explanation:

The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall.

Generally:

The cell wall is a structure only found in plants. It surrounds the cell and it provides protection, as well as gives it its structure and helps with filtering what goes in and out.