PLS HELP
Answer the following questions.
The skin of a dog has 74 chromosomes.
a. how many chromosomes are in each sperm cell?
b. how many chromosomes are in each heart cell?
c. how many chromosomes are in each somatic cell?
d. how many chromosomes are in each gamete?

Answer:

0.2 mL.

Explanation:

had a test with this question

Answer:

Type A and type B

Explanation:

This question is describing blood type in humans. According to the question, type A blood is caused by the antigen A of gene A while Type B is caused by a gene B for antigen B. Type O blood results from the absence of either gene while the presence of both genes causes both antigens to be formed resulting in type AB blood.

If a person of blood group AB i.e. genotype (iAiB) marries one belonging to blood group O (genotype ii), the following genotypes of offsprings will be produced (see attached image for punnet square):

iAi - blood type A

IBi - blood type B

Answer:

false

Explanation:

The statement "Energy cycles through ecosystems because it returns to the Sun" is definitely false.

An ecosystem may be defined as a type of place or an area where members of different species live together and interact with one another for the purpose of food, shelter, space, and mating partner.

The ultimate source of energy for the living being is delivered by the sun. But the sun never takes this energy in any form. It is true that the energy cycle in the ecosystem but does not passes to the sun. It gets cycled through living organisms like plants, animals, and microorganisms.

The plants captures the energy from sunlight through photosynthesis, herbivores take energy from plants, carnivores take energy from herbivores, and the microorganisms get energy from dead and organic matter.

Therefore, the statement "Energy cycles through ecosystems, because it returns to the Sun", is definitely false.

To learn more about Ecosystems, refer to the link:

https://brainly.com/question/842527

#SPJ2

Answer: The most likely explanation for the allele differences observed in Greater Prairie Chickens between the 1950s and 2000s is genetic bottleneck. This occurs when a population experiences a significant reduction in its total size, resulting in a decrease in the amount of genetic diversity within the population. This can lead to a decrease in the number of alleles per gene locus, as individuals may carry the same alleles more frequently due to the reduced gene pool. In the case of Greater Prairie Chickens, it is possible that the population experienced a genetic bottleneck in the late 20th century, resulting in a loss of genetic diversity and a decrease in the number of alleles per gene locus in contemporary samples compared to historic samples.

Both GPCRs (G protein-coupled receptors) and RTKs (receptor tyrosine kinases) are transmembrane proteins with an extracellular domain that binds a signal and an intracellular domain that acts to transmit the signal (option c).

GPCRs are activated by ligands such as hormones, neurotransmitters, and sensory stimuli.  RTKs are activated by growth factors and other signaling molecules,

Both GPCRs and RTKs have different mechanisms of action but they share a common structural feature, that is : they are both transmembrane proteins with the extracellular domain that binds signal and intracellular domain that acts to transmit the signal.

This allows them to relay signals from outside the cell to the inside of the cell, where they activate intracellular signaling pathways and ultimately leads to cellular response.

To know more about GPCRS and RTKs, refer

https://brainly.com/question/15208732

#SPJ11

Oxygen is vital to life as we now know it, was not present when the Earth formed.

Oxygen was absent in early earth atmosphere. And it the most vital gas for all the living organism . In primitive times earth's atmosphere was lacking free oxygen. Instead, it consisted mainly of carbon dioxide, infact as  100 times more carbon dioxide than contained in today's atmosphere.

Oxygen is produced by plants by the process of photosynthesis, earlier there were no plants and vegetation. oxygen gas  has no color or smell. All the living begin are dependent on oxygen for the process of respiration .

To learn more about Oxygen , here

brainly.com/question/2272415

#SPJ1

The metabolic imbalance theory most commonly attempts to account for alcoholism (option a).

This theory suggests that alcoholism is related to a metabolic dysfunction or imbalance within the body, specifically involving the way alcohol is metabolized.

Alcohol metabolism primarily occurs in the liver, where it is broken down by enzymes. In individuals with alcoholism, it is believed that there may be genetic or physiological factors that lead to an altered or inefficient alcohol metabolism process.

This metabolic imbalance can result in an abnormal response to alcohol, such as increased tolerance or heightened sensitivity.

Furthermore, the metabolic imbalance theory also encompasses the impact of alcohol on various physiological processes and systems in the body. Chronic alcohol abuse can disrupt metabolism, nutrient absorption, hormone regulation, and liver function, leading to further imbalances and complications.

While the metabolic imbalance theory has been primarily associated with alcoholism, it is important to note that drug abuse involving substances like marijuana or cocaine may involve different mechanisms and theories to explain their effects and addictive properties.

To know more about alcoholism refer here:

https://brainly.com/question/4212138

#SPJ11

The top tier is sedentary behavior, followed by light intensity, moderate intensity, vigorous intensity, and finally, strength and flexibility.

The physical activity pyramid is a visual representation of the different types of physical activity that individuals should engage in to maintain a healthy lifestyle.

At the top of the pyramid, the sedentary behavior tier includes activities such as sitting or lying down, which should be minimized.

The next tier is light intensity activities, such as walking or stretching, which should be done throughout the day.

The third tier is moderate intensity activities, such as brisk walking or biking, for at least 30 minutes a day.

The fourth tier is vigorous intensity activities, such as running or playing sports, for at least 20 minutes a day.

The bottom tier is strength and flexibility exercises, such as weightlifting or yoga, which should be done twice a week.

For more such questions on intensity, click on:

https://brainly.com/question/30218948

#SPJ11

Cellular respiration uses oxygen and carbohydrates to release chemical energy for the use of cells

In the process of breaking down glucose during cellular respiration, oxygen is consumed, which also produces heat and chemical energy. This process produces water and carbon dioxide. During aerobic cellular respiration, glucose and oxygen combine to create ATP, which the cell can utilise. As byproducts, carbon dioxide and water are produced. For aerobic cellular respiration, the general equation is: During cellular respiration, the reaction between glucose and oxygen produces ATP. The aerobic process known as cellular respiration is how living cells break down glucose molecules, release energy, and create ATP molecules. In general, glucose and oxygen react in this three-stage process to produce carbon dioxide and water.

To learn more about Cellular respiration Please click on the given link:

https://brainly.com/question/14158795

#SPJ4

Answer:

As light passes through a prism, it is bent, or refracted, by the angles and plane faces of the prism and each wavelength of light is refracted by a slightly different amount.

the light gets dispersed and there is a formation of a seven colours spectrum

Answer:

1. Nitrification occurs when soil microbes convert ammonium into nitrate. Much of the overlap between the carbon cycle and the nitrogen cycle occurs in the soil, in processes conducted by soil microbes. Microbes break down nutrients, build new compounds for their own growth, and eventually die.

The second question im not sure sorry- the positive and negative one ;(

3. Many human activities have a significant impact on the nitrogen cycle. Burning fossil fuels, application of nitrogen-based fertilizers, and other activities can dramatically increase the amount of biologically available nitrogen in an ecosystem. As nitrogen makes up 78% of the atmosphere, there is no shortage of it – it just isn't in a form plants and animals can use.

4. Carbon makes its way through living things as carbon-based compounds, like energy molecules, fats and proteins, eventually cycling its way back into the atmosphere. Nitrogen is mainly found in the atmosphere as well and enters the ecosystems as nutrients for plants. Water, nitrogen and carbon cycles. Carbon moves from the atmosphere and back via animals and plants. Nitrogen moves from the atmosphere and back via organisms. Water moves on, above, or below the surface of the Earth.

5. Carbon cycle, Nitrogen cycle, Nutrient cycle, Oxygen cycle, Phosphorus cycle, Sulfur cycle, Rock cycle, Water cycle.

6. Wind, water, and ice erode and shape the land. Volcanic activity and earthquakes alter the landscape in a dramatic and often violent manner. And on a much longer timescale, the movement of earth's plates slowly reconfigures oceans and continents. Each one of these processes plays a role in the Arctic and Antarctica.

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. Earth's surface is the only habitat available to the human race. Understanding the processes by which that habitat has been created and continually altered is important to determine the causes of environmental degradation.

Answer:

Conditions are more marine higher in

the intertidal and more terrestrial

lower in the zone.

Explanation:

This is because the intertidal zone in the Marine sea shore is submerged or overwhelmed with water during high tide and exposed to the air during low tide. The zone is in different forms which might be from sandy beaches to rocky cliffs. intertidal zone change frequently once or twice every day since it is constantly affected by crashing waves. They have moist temperature,humid air and also high degree of salinity.

Nine puppies born between Jessie and Bluebell were adopted and raised by Napoleon to become his watchdogs.

Animal Farm is an animal fable, in the form of a satirical short story, by George Orwell, first published in England on August 17, 1945. It tells the story of a group of animals. on the farm rebelled against their human farmers, hoping to create a society. where animals can be equal, free and happy. In the end, the uprising was betrayed and under the dictatorship of a pig named Napoleon, the farm fell into the same dire state as before.

According to Orwell, Animal Farm reflects the events leading up to the Russian Revolution of 1917 and then the Soviet Stalin era. Orwell wrote the book between November 1943 and February 1944, when the United Kingdom was in wartime allied with the Soviet Union against Nazi Germany, and the British intelligentsia greatly respected Stalin, a statue that Orwell hated.

The main theme of Animal Farm is about ordinary people's ability to continue to believe in a revolution that has been completely betrayed. Orwell tries to reveal how those in power - Napoleon and his fellow pigs - have distorted the democratic promise of the revolution.

To learn more about "Animal Farm", here

https://brainly.com/question/29637045

#SPJ4

Answer: A

Explanation: Hope this help :D

Option B) refractory period, is the feature of a neuron that limits the number of action potentials it can produce per second.

Neurons are specialized cells that transmit electrical signals, called action potentials, throughout the body. These signals are crucial for communication between neurons and for the transmission of information throughout the nervous system.

The number of action potentials that a neuron can produce per second is limited by several factors, including the threshold for firing an action potential, the refractory period, and the process of saltatory conduction.

Of the options listed, the refractory period is the feature of a neuron that limits the number of action potentials it can produce per second.

The refractory period is the period of time immediately following the firing of an action potential during which the neuron is unable to generate another action potential.

This is because the voltage-gated ion channels that are responsible for the propagation of the action potential need time to reset to their resting state before another action potential can be fired.

The refractory period thus limits the frequency at which action potentials can be generated by a neuron.

Threshold refers to the minimum depolarization required to initiate an action potential, while saltatory conduction refers to the process by which action potentials are propagated down myelinated axons in a jumping or "saltatory" fashion.

While these factors can also affect the frequency of action potential generation to some extent, the refractory period is the primary factor limiting the number of action potentials that a neuron can produce per second.

Learn more about action potentials at: https://brainly.com/question/15997473

#SPJ11

Answer:

Represents pollination as pollen is being transmitted to different plants allowing plants to spread

Answer:

Deforestation has an effect on the Carbon Cycle also known as the Greenhouse gas effect and global warming. Trees and forests balance the amount of Carbon in the atmosphere through the process of photosynthesis in which plants make their own food with carbon dioxide. This excess heat warms the earth.

Explanation:

I hope this helps!

Answer:

in the 46 chromosomes in our body, the autosomes are the first 22 homologous pairs of chromosomes that do not influence the sex of an individual, while sex chromosomes are the 23rd pair of chromosomes that determine the sex of an individual

hope this helps, good luck! : )

Answer:

Several school lunch professionals recently discovered the nutrients in school lunches wereinsufficient for teenagers. After much discussion they decidedcricketsshould be added toschool lunches! Needless to say, student reaction was mixed. Some thought this would helpthem meet their nutritional requirements. Others were disgusted! “Crickets, they said? Gross!”

Explanation:

Answer:

A. Class

Explanation:

Kingdom can be answered but the most specific is class

The team of scientists at Stanford who are working to better understand the Chinese purple are physicists.

Chinese purple or Han purple is basically a purple colored synthetic pigment which the Chinese ancestors used to adorn the terracotta soldiers and their accessories. It happens to represent one of the earliest known cases of the cross-cultural technology transfer.

A team of physicists from Stanford used synchrotron-based x-ray techniques, like micro-x-ray diffraction as well as micro-x-ray fluorescence, in order to characterize the exact chemical make-up of the pigments that are in Chinese purple. They found that within the structure of Chinese purple, barium plays a key role in the pigments' molecular identity.

To know more about Han purple here

https://brainly.com/question/14153732

#SPJ4

The interference pattern seen when light passes through narrow, closely spaced slits, is due to Diffraction:

Diffraction is a light phenomenon that occurs when light strikes an impediment or travels through the slit. This results in a light pattern known as interference.

When light goes through a slit or hits an object, it creates a series of patterns known as interference patterns. The light bends through the corners of the barriers or passes through a slit that might behave as an obstruction. The pattern is caused by the diffraction phenomenon and involves the form of the slit in it. Diffraction is the sole phenomena that causes interference patterns, rather than reflection, refraction, dispersion, or deflection. Thomas Young's work on limited double-slit geometry produced observable interference effects and was the basis for diffraction.

To learn more about diffraction. Click, https://brainly.com/question/15628975.

#SPJ4

Answer:

i think it's hydropower??

Explanation:

not for sure, just taking a guess

let me know if it helped haha

Answer:

im confussed i need more evidence

Explanation:

Answer:

A. Brain

Explanation:

Answer:

i would have to say A. Brain

Explanation:

because it is the only organ shown in the questions that is associated with the nervous system