why do chromosomes form during mitosis?


A - chromosomes control the movement of organelles

B - chromosomes are more organized than chromatin, so they are easier to move

C - the cell is too small to hold all the chromatin when it is unwound

D - the chromosomes are the pieces of dissolved nuclear envelope moving to the daughter cells

Answer:

carbon

Explanation:

because because it is not an element

Answer:

B

Explanation:

Because the turtles are testudines.

The answer to the question is A

Answer:

golgi apparatus

Explanation:

the golgi apparatus packages molecules to leave the call

In that it cannot develop outside the host cell, an obligatory internal pathogen like rickettsia differs from an aerotolerant one like salmonella.

a cell into which a plasmid is inserted in recombinant DNA studies or one whose metabolism is exploited by a viral for growth and reproduction; in bio production, the cells created and cultivated to produce a the protein of interest are indeed the production system host cells.

Pathogenicity is specifically the characteristic or state of having the capacity to cause illness, whereas pathogenesis is the ability of an organism to cause disease, or the level of pathogenic within a species or a group.

Infectious germs, viruses, pathogens, fungi, viral vectors, and parasites that cause disease are a few examples of pathogenic agents.

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The  two statements that could explain  the reason for why fossils of the species have never been found are;

a. There were few members of the species.

d. Their bodies decompose quickly.

Any surviving remains, impression, or evidence of a once-living thing from a previous geological epoch is referred to as a fossil all those things such such as exoskeletons, bones, shells can be refers to all fossils together.

Even though certain species of animal may have lived in the past, according to scientific theory.However, the species' fossils have never been discovered since bodies decomposed quickly.

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Adenosine triphosphate (ATP) connects anabolism and catabolism in cells by storing energy from catabolic reactions and providing that energy to anabolic reaction.

Adenosine triphosphate (ATP), also known as energy molecule, is found in animal and plants cells.

It plays a huge role in anabolic and catabolic reactions.

During anabolic reaction, simple organic molecule join together to form complex molecule by using energy.

For example, carbohydrates, fats, proteins and glycerol.

While in catabolic reaction, large complex molecules disintegrate to form small molecule and in this reaction a large amount of energy is released.

This energy is stored by the body cells for later use.

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Answer:

Reproductive organs.

Explanation:

The development of both males and females is essentially identical except for the development of the reproductive organs.

Hope this helps!

Bacteria generation time will be 307 minutes to produce about 100,000 cells. So, the correct option is B.

Bacteria multiply by the method of binary fission, which is a method of asexual reproduction in which a single bacterial cell splits into two halves, and each half of the bacterial cell develops into a new bacterium.

For above given information,

The final cell number, \(N_t\) = 100000.

The initial cell number, \(N_0\) = 20.

So, by using the formula given, we get the number of generations, n = 12.2889.

Then, one generation will take 25 minutes.

So, 12.2889 generations will take (12.2889 * 25) = 307 minutes

Thus, Bacteria generation time will be 307 minutes to produce about 100,000 cells. So, the correct option is B.

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Your question is incomplete, most probably the complete question is:

Bacterium X has a generation time of 25 minutes. Starting with 20 cells in log phase, how long does it take to produce about 100,000 cells? [n - log10(NT/N)/0.301]

A) about 24 hours

B) about 307 minutes

C) about 5000 minutes

D) O about 150 minutes

What do cells take in and give out?

Image result for cells carry out to support life? (Select all that apply.) remove waste materials fight foreign cells or harmful molecules avoid burning food molecules to save energy Burn food molecules to produce energy

During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP

Answer:

Explanation:B

We have that for the Question, it can be said that due to commercial activities there has been a steady decline in the number of fishes in use for commercial purposes cause the are targeted and in high demand

"There has been a decline in population sizes of commercial fish stocks."

Option B

What has happened to fish populations as a result, primarily, of commercial fishing activity?

A Some commercial fish species are exhibiting faster growth rates.

B There has been a decline in population sizes of commercial fish stocks.

С There has been a decrease in the levels of toxins found in fish that we eat.

D Larger fish are dominating marine ecosystems.  

From the question we are told

Generally

Due to commercial activities there has been a steady decline in the number of fishes in use for commercial purposes cause the are targeted and in high demand

Therefore

What has happened to fish populations as a result, primarily, of commercial fishing activity is that Due to commercial activities there has been a steady decline in the number of fishes in use for commercial purposes cause the are targeted and in high demand

"There has been a decline in population sizes of commercial fish stocks."

Option B

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The resulting daughter cells are shown in the attached figure.

Stem cells have two chromosomes. One chromosome has C and D genes, while the other has c and d genes. Chromosomes are copied during the cell cycle's cell division cycle (interphase - S phase).

Chromosomes divide in meiosis I, resulting in the segregation of chromosomes.

During meiosis II, the two daughter cells resulting from meiosis-I are divided into four cells. The cells are separated resulting in the production of two types of gametes or daughter cells. One type contains the C and D genes, and the other type contains the c and d genes.

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The statement that best describes an example of science influencing society is Governments identify a public health risk caused by mosquitos.

The viewpoint and knowledge of science have an effect on society. The information provided by science and the techniques employed by scientists has an impact on the viewpoints of many members of society about themselves, others, and the environment.

Science must address societal requirements as well as global issues. It is vital that the general public comprehends science and engages with it in order to enable people to make informed decisions about their personal and professional lives.

The biggest joint endeavor is science. It makes us live longer and healthier lives, monitors our health, provides us with medication to treat illnesses, lessens our discomfort, and enables us to access the water we require to thrive.

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Answer:

a reversal in U.S. pesticide policy, a nationwide ban on DDT for agricultural uses, and an environmental movement that led to the creation of the U.S. Environmental Protection Agency.

Answer:

since the parasympathetic divison causes the heart rate to decrease and the sympathetic divison causes the heart rate to increase this is an example of antagonistic innervation

Explanation:

Answer:

C) gravity

Explanation:

Pretty sure!

Explanation:

in binary fission one amoeba cell divide into two daughter cell which are genetically identical

first the nucleus divide into two then the cytoplasm divide and two new daughter cells are formed

Answer:

Hi. Hope this helps. Have a great day

Explanation:

Asexual reproduction by a separation of the body into two new bodies. During this process an organism duplicates its genetics or DNA then divides it into 2 parts. With each new organism receiving a copy of that DNA

Answer:

Glucose + Oxygen (O 2)Explanation:

Human muscle cells are facultative anaerobes that perform lactic acid fermentation when oxygen is depleted from muscle tissues. The products of Alcoholic Fermentation are Ethanol + Carbon Dioxide (CO2).

It is the type of respiration that takes place in the absence of oxygen.

Alcoholic fermentation is  biotechnological process that is  accomplished by the  yeast with  some types of  the bacteria or even  few more microorganisms to  just convert  the sugars into  the ethyl alcohol with carbon dioxide.

The products are of types as alcohol with glycerol and even the carbon dioxide from the yeast fermentation of  many such various sugars as the  butyl alcohol with acetone with  lactic acid with monosodium glutamate  and even the  acetic acid from  such various bacteria and citric acid, gluconic acid and  some small amounts of the  antibiotics with  vitamin B12 and riboflavin (vitamin B2).  

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Answer:

An actual computer virus is a malicious software, often known as malware, that can harm a computer and its users.

Virus hoaxes are false or misleading information about viruses that circulate through various communication channels.

They can be more dangerous than actual viruses due to their ability to spread quickly, cause panic, and undermine effective public health measures.

Virus hoaxes are deceptive messages or claims that often exaggerate the severity or impact of a particular virus. They can be spread through social media, email chains, or word of mouth. These hoaxes may include misinformation about symptoms, transmission methods, or false remedies, leading people to take ineffective or even harmful actions.

What makes virus hoaxes particularly dangerous is their potential to create panic and misinformation at a rapid pace. The viral nature of social media and other communication platforms allows these hoaxes to reach a wide audience within a short period. As a result, people may make decisions based on false information, such as avoiding necessary medical treatment, taking unnecessary precautions, or spreading fear and misinformation to others.

Moreover, virus hoaxes can undermine public health efforts by diverting attention and resources from legitimate preventive measures. They can erode trust in healthcare authorities and disrupt the dissemination of accurate information, making it harder for individuals to make informed decisions and follow recommended guidelines.

This can have severe consequences, especially during outbreaks or pandemics, where timely and accurate information is crucial for public safety. Therefore, it is essential to verify the credibility of information and rely on trusted sources to mitigate the risks associated with virus hoaxes.

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Answer:

electrode

Explanation:

Electrical stimulation of the brain (ESB) is a relatively new technique used to treat chronic pain and tremors associated with Parkinson disease. ESB is administered by passing an electrical current through an electrode implanted in the brain.

Techniques that would not be suitable for determining the presence of a specific mRNA in a tissue sample are : RNA interference, RNA-seq, or microarray.

The most sensitive technique for detecting and quantifying mRNA is RT- PCR. Using RT-PCR, even small sample sizes can be used in the quantification of mRNA and the technique can do this using just a single cell.

A number of widely used procedures exist for detecting and determining the abundance of a particular mRNA in RNA sample. But four popular methods are: Northern blot analysis, nuclease protection assays (NPA), in situ hybridization and reverse transcription-polymerase chain reaction (RT-PCR).

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Sound vibrations are amplified in the vertebrate ear through the movement of the cochlea and fluid vibrations, as well as the movement of the tympanic membrane, the bones in the middle ear, and the fluid-filled region covered by the oval window.

In vertebrate ears, sound vibrations are amplified through a complex process that involves several structure. The sound waves are first collected by the outer ear, which includes the pinna and ear canal. The sound waves then reach the eardrum, or tympanic membrane, which vibrates in response to the sound waves. The vibrations are then transmitted through the bones of the middle ear, the malleus, incus, and stapes, which amplify the sound further.
The stapes, the last bone in the chain, then transmits the vibrations to the oval window, a membrane that separates the middle ear from the fluid-filled inner ear. As the oval window vibrates, it creates waves in the fluid within the cochlea, a snail-shaped structure in the inner ear.
The fluid vibrations cause the basilar membrane, a thin, flexible membrane that runs along the length of the cochlea, to move up and down. The basilar membrane contains hair cells, which are sensory receptors that convert the mechanical vibrations into electrical signals that the brain can interpret as sound.
Thus, sound vibrations are amplified in the vertebrate ear through the movement of the cochlea and fluid vibrations, as well as the movement of the tympanic membrane, the bones in the middle ear, and the fluid-filled region covered by the oval window. The differences in the surface area of the pinna versus the oval window do not play a significant role in the amplification of sound vibrations.

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Answer:

it will cause health problems, destroy our wild places, and release toxins such as mercury and arsenic into our communities.

Answer:

Fossil fuels pollute the environment

Fossil fuels are non-renewable and unsustainable

Drilling for fossil fuels is a dangerous process

Explanation:

Answer:

C

Explanation:

Answer:

Because Mercury  and Venus are too close to the Sun and its gravity.

Explanation:

Mercury and Venus do not have moons because of their proximity to the Sun and their specific orbital characteristics.

Both planets are located relatively close to the Sun, and their gravitational interaction with the Sun is strong.

Additionally, their orbits are relatively stable, which means that any small celestial bodies that might have approached them in the past were likely captured by the Sun's gravitational pull or flung out of the solar system.

Unlike outer planets such as Jupiter and Saturn, which have strong gravitational influences and numerous moons, the inner planets like Mercury and Venus have not been conducive to capturing or retaining moons due to their specific orbital dynamics.

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When a nerve cell repolarizes after firing a nerve impulse, it does so by using the Sodium-potassium pump and Potassium ion channels.

The resting membrane potential (-70mV) inside a neuron is maintained by the Na⁺ / K⁺ pump. Sodium ions are pumped out of the neuron and potassium ions are pumped in. This maintains the concentration gradient of sodium and potassium ions across the cell membrane. During depolarization, the sodium ion channels open, allowing sodium ions to flow into the neuron. As a result, the membrane potential increases (becomes less negative).

At the peak of the action potential, the sodium ion channels close and the potassium ion channels open, gthis allows potassium ions to flow out of the neuron, repolarizing the cell. The repolarization phase restores the original concentration gradient of sodium and potassium ions across the cell membrane. So therefore, the repolarization of a nerve cell after firing a nerve impulse occurs by the flow of potassium ions through potassium channels and also by the use of the sodium-potassium pump.

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Mangroves are the forest ecosystem that are wetlands of the intertidal zones. Fisherman supports the protection of the mangroves because many fishes breed their.

Mangrove forests are important as they include a very strong ecosystem in them and are huge habitat for the fishes and other aquatic organisms. Mangroves are the breeding habitat for a variety of fishes and contain some beneficiary fishes for the fishermen.

The environment of the mangroves is beneficial for aquatic animals like fishes, oysters, crabs and many others that are important seafood and catch for the fishermen.

Therefore, option B. fishes breed in mangrove forests is the reason that the fishermen support the protection of the mangrove forests.

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Answer:

after nutrients are absorbed during digestion,the excretory system removes faeces through the rectum. these work together to maintain oxygen homeostasis.

Answer:

B

Explanation:

As you read the article you`ll understand that Darwin discovered that the finches were all different because of the genetic code.

I just finished the test

Answer:

Food source​

Explanation:

Each bird ate different foods, bigger beaks>nut diet smaller>insects

Answer:

The question needs to be completed

Explanation: