Which of the following is a simplified way of describing mitosis?
1. Cells copy once and divide twice making 2 cells
2. Cells copy twice and divide once making 2 cells
3. Cells copy once and divide twice making 4 cells
4. Cells copy once and divide once making 2 cells

Answers

Answer 1

Mitosis is the equational division, in which one parent cell divides to form two exact copies of daughter cells which are identical to the parent cell. Thus, the correct option is 4.

What is Mitosis?

Mitosis is a type of cell division which occurs in all types of cells. This is also known as equational division because the number of chromosomes remains constant after the division. In this division, one parent cell undergoes division to form two daughter cells which are clones of the parent cell.

In this division, a single DNA splits into two daughter cell's DNA. The mitotic division consist of karyokinesis and cytokinesis. Karyokinesis is the division of nucleus which includes different phases such as Prophase, Metaphase, Anaphase, and Telophase followed by the division of cytoplasm (cytokinesis).

Therefore, the correct option is 4.

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Related Questions

For certain breeds of cattle, a bull with solid red fur and a cow with solid white fur will make a roan calf that has both red and white hairs in its coat. What is this genetic inheritance pattern?.

Answers

The genetic inheritance pattern is Codominance.

What is Codominance?

Co-dominance can be said to be a genetic scenario whereby the alleles of a gene are neither dominant nor recessive over one another, hence, they are both simultaneously expressed in the hybrid phenotype. It is one of thee non-mendelian inheritance.

In this case, involving a gene coding for fur colour in the cattle. One of the alleles code for red hair while the other allele for white hairs. Both alleles can be said to be co-dominant because no one is dominant over the other, hence, they produce an hybrid phenotype called Roan where both red and hair phenotypes are seen/expressed.

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What is the correct term for an instance in which the expression of an allele of a gene completely masks the expression of another gene?.

Answers

Epistasis is the correct term in which the expression of an allele of a gene completely masks the expression of another gene.

Whether they sort independently or not, genes interact at the level of gene products such that the expression of an allele for one gene masks the expression of an allele for a different gene. This process is epistasis.

Complete dominance is a form of dominance in the heterozygous condition where the allele that is dominant masks the effect of the allele that is recessive. For example, for an individual carrying two alleles that are  dominant, trait that they represent will be expressed.

The masked allele is recessive and the allele that expresses itself is dominant. In the presence of a dominant allele, recessive character cannot be masked. When a recessive allele is double, only the recessive character is expressed.

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If parents supplied different alleles for a certain trait to their offspring, which
of the following terms would be used to describe the offspring?

Answers

If parents supplied different alleles for a certain trait to their offspring, the offspring would be described as Heterozygous.

Contribution of allele

In other instances, each parent contributes a unique allele of a certain gene, in which case the child is said to be heterozygous (the prefix hetero means “different”) for that allele.

Alleles result in phenotypes, which are either dominant or recessive physical manifestations of a trait.

What are the two types of traits that parents pass on to their children?

Recessive and dominant genes. Dominant/recessive interactions are the most frequent type of allele-allele interaction.

When one (dominant) allele of a gene effectively outweighs the other (recessive) allele, the allele is said to be dominant. Blood types and eye color are two instances of dominant/recessive gene interactions.

What decides which alleles the parents’ offspring will inherit?

All the kids will have the same genotype if the parent with the unknown genotype is homozygous dominant.

All of the offspring will have at least one dominant allele if the parent with the unknown genotype is homozygous dominant.

Half of the offspring will receive a recessive allele from both parents and will have the recessive phenotype if the parent with the unknown genotype is heterozygous.

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Complete Question

if parents supplied different alleles for a certain trait to their offspring which of the following terms would be used to describe the offspring

A. Recessive

B. Dominant

C. Homozygous

D. Heterozygous

A scientists creates a data table and records the mass of lizards on an island. This is an example of

Answers

If a scientist creates a data table and records the mass of lizards on an island, then it represents an example of an observational study.

What are observational studies?

Observational studies are scientific investigations based on collecting data from nature, which can be used to raise questions and test hypotheses. Conversely, the experimentation studies are based on the obtention of data from experiments that are used to test (either confirm or reject) our working hypothesis.

Therefore, we can conclude that observational studies are based on collecting data in nature, which is distinct from experimentation studies that involve to test hypotheses under controlled conditions.

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Description of carbohydrates and what is it purpose and importance

Answers

Carbohydrates are essential molecules whose main importance is being a source of energy for the organism. Carbohydrates are also components of the cell membrane.

What are carbohydrates?

Carbohydrates are essential molecules for life as they are the main source of energy necessary for organisms. They are also part of the cell membrane when binding to lipids and proteins and composing glycolipids and glicoproteins.

Carbohydrates are hydrophilic substances soluble in water and alcohol. Their -OH groups are responsible for that solubility.

Carbohydrates are present as small or large molecules.

• Small molecules ⇒ sugars ⇒ monosaccharide and disaccharide

• Large molecules ⇒ polysaccharide

Glucose is the principal carbohydrate cells use to accomplish their vital functions.

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help Human Universal

list of traits, you will answer the following question with your own thoughts: Why might studying the similar behaviours of modern non-human primates such as the bonobo chimpanzee help us understand the connection between modern humans and our early ancestors?

Answers

We consider the behaviors of non-human primates such as the bonobo to assist us to get the association between cutting-edge people and our early precursors since we all have comparable behavior like the requirement for nourishment, communication, and emotions as well.

Whereas we misplaced most of our body hair and bulked up our brains, people are developmentally near to other incredible primates, with around 97 percent of our qualities DNA coordinating up.

Bonobos at the Leipzig Zoo were shot shaking their heads "no" in dissatisfaction in arrange to induce newborn children to stop playing with their nourishment (rather than eating it) or to keep a newborn child from straying.

In one occurrence, a mother recovered her child's bonobo from an endeavor to climb an adjacent tree. The ultimate endeavor finished with the mother pulling her newborn child by the leg and shaking her head whereas looking at the child.

"They ask for nourishment with an open hand (the way human poor people do within the road), have forceful motions that seem exceptionally human, stroke, and touch and embrace similar to people, and so the gestural collection looks greatly human to us."

Other primates are especially clever at our motions. "That's why gorilla connection is more frequent than human," de Waal said.

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Which characteristics do fish and amphibians have in common? Select all that apply.

They use gills at some point in their life cycle.

They use lungs at some point in their life cycle.

Their eggs are laid in water for reproduction.

Their bodies match the temperature of their environment.

Answers

Answer:

A C D

Explanation:

They use gills at some point in their life cycle.

Their eggs are laid in water for reproduction.

Their bodies match the temperature of their environment.

10- Which of the following substances the nitrogen element enters in its structure ?
A-Glycogen
B- Galactose
C- Thyroxine
D-Glucose

Answers

In thyroxine the nitrogen element enters in its structure.

How our body makes glucose?

It primarily originates from foods high in carbs, such as fruit, bread, and potatoes. Food moves from your mouth to your stomach via your oesophagus while you eat. It is reduced to tiny fragments by acids and enzymes there. This causes the release of glucose.

It enters your intestines to be absorbed there. It then enters your bloodstream from there. Once in the circulation, insulin aids in the delivery of glucose to your cells.

Thyroxine, a hormone produced by the thyroid gland, regulates this metabolic rate, ensuring that the body is operating at the proper rate. Tetraiodothyronine is its full name, and its chemical formula is C15H11NO4I4.

Hence the correct option is C; thyroxine.

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What is half life?

1. the amount of time it takes for half of an atom's electrons to decay
2. the amount of time it takes for some of a radioactive substance to decay
3. the amount of time it takes for half of a radioactive substance to decay
4. the amount of time it takes for all of a radioactive substance to decay

Answers

Answer:c

Explanation:

Microscopic particles of ash and dust in the air that can cause health problems are called p_____

Answers

part of air pollution and are dangerous to human health.

The hydrophobic tails of phospholipids keep water from passing directly through the cell membrane. How might this be beneficial for the maintenance of homeostasis in a cell?.

Answers

The hydrophobic tails of phospholipids are beneficial for the maintenance of homeostasis in a cell because they help to maintain the correct amount of water.

In the field of biology, homeostasis can be described as the ability of an organism to keep its internal environment stable in order for the proper functioning of the organism.

The cell membrane of a cell is made up of hydrophobic tails that do not allow water to pass directly into the cell. By doing so, the cell membrane helps in maintaining a steady environment for the proper working of a cell.

Water is allowed to move in or out only when required due to these hydrophobic tails. In this way, the hydrophobic tails help in maintaining homeostasis by not allowing extra water to move in or out.

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Several changes occur within the body during stressful situations. For example, pupils become more dilated, heart rate and breathing rate increase, and appetite decreases. These changes are controlled by

Answers

Answer

The autonomic nervous system

Signal transduction

The figure below refers to signal transduction from a G protein-associated ligand.

1. Add an example ligand.
2. Identify what type of receiver is outlined in the image
3. Describe the processes between the different molecules
4. Describe the cellular response

Answers

When a relevant ligand activates a GPCR, the receptor undergoes a conformational change that allows the receptor to transmit the external signal into the cell.

What do you mean by receptor ?

Receptors are biological transducers that translate electrical impulses from both internal and exterior environments.

They can be dispersed, like those of the skin and viscera, or they can be massed together to create a sense organ, like the eye or ear.

The majority of cellular reactions to external stimuli are mediated by G protein-coupled receptors (GPCRs).

When the receptor is activated by a ligand, it attaches to a heterotrimeric G protein partner and encourages the exchange of GTP for GDP, which causes the G protein to dissociate into the subunits and, which regulate downstream signals.

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For certain breeds of cattle, a bull with solid red fur and a cow with solid white fur will make a roan calf that has both red and white hairs in its coat. What is this genetic inheritance pattern?.

Answers

The genetic inheritance pattern is Codominance.

What is Codominance?

Co-dominance can be said to be a genetic scenario whereby the alleles of a gene are neither dominant nor recessive over one another, hence, they are both simultaneously expressed in the hybrid phenotype. It is one of thee non-mendelian inheritance.

In this case, involving a gene coding for fur colour in the cattle. One of the alleles code for red hair while the other allele for white hairs. Both alleles can be said to be co-dominant because no one is dominant over the other, hence, they produce an hybrid phenotype called Roan where both red and hair phenotypes are seen/expressed.

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PLEASE HELP ME WITH THIS QUESTION ASAP!!!

The question is “ approximately how many clams would be developing in 10°C water?”

Use the picture to help you answer! :)

Answers

Answer:

52 clams would be in 10 degree Celcius water. The clams that survived in the 21°C and 25°C water are used in each the biomarker and genetic analysis.

which one of the following correctly matches the organelle with its function

A. cell wall produces energy for the cell
B. nucleus: control center of the cell
C. cell membrane gives rigid structure that supports the other organelles
D. chloroplasts: colorless, jelly-like substance that supports the other organelles




HELP NOW GIVING BRAINLESS ​

Answers

nucleus control center of the cell

gerlach used a stain called carmine to stain body tissues, but had a very difficult time staining a certain tissue type. he was finally able to stain the tissue section when he mistakenly left the sample in the stain overnight. what type of tissue type was gerlach finally able to visualize due to his "error"?

Answers

Neural tissue is the type of tissue type that gerlach was finally able to visualize due to his "error.

Nerve cells, also known as neurons, and their ancillary cells, such as neuroglia cells, make up neural tissue, also known as nervous tissue. The nerve cells are specialized cells that communicate between nerve cells by sending and receiving nerve impulses, also known as action potentials. Dendrites and axons, two types of distinctive cellular projections, are found on nerve cells. The electrochemical signals are picked up by the dendrites (from another nerve cell). The following nerve cell receives the action potential from the axons.

The axon terminal, which resembles a bulb, is the termination of the axon. The nerve impulse is eventually transmitted from one nerve cell to the next by neurotransmitters that are produced from the axon terminal. The nervous tissue also contains neuroglia cells in addition to nerve cells. These cells assist in nourishing and defending the nerve cells. They create myelin and aid in preserving homeostasis

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How does virus and bacterial infections each affect healthy body cells?

Answers

The virus infections happens when a virus gets past the physical barriers of the body (skin, mucus, and so on) and infect a suitable cell, the virus take the genetic machinery of the host cell to replicate, damaging that cell and making more virus that will do the same process with other suitable cells. After the virus use all the cell potential, it will kill the cell and release all the virus that were in the cytoplasm of the host. While bacterial infections have more autonomy, being not necessary the integral machinery of the cell to multiply in the host body, it can act in differrebt ways, such as: crowd out the host tissue and disrupt the function, killing the cells or tissues outright, destroy the metabolic machinery, cause a massive toxic reaction in the immune system, and release toxins that can make the body stop all their functions at once (paralyze the metabolic and general system of the host).

the same bees that pollinate the flowers of the brazil nut trees pollinate orchids, which are epiphytes (plants that grow on other plants); however, orchids cannot grow on brazil nut trees. these observations explain

Answers

The observations explain about the why Brazil nut trees do not set fruit in plantations.

In a short amount of time, plantation forestry may generate large amounts of wood. Authorities in charge of state forestry, such as the Forestry Commission in Britain, as well as the paper and wood businesses, as well as other private landowners, grow plantations (such as Weyerhaeuser, Rayonier and Sierra Pacific Industries in the United States or Asia Pulp & Paper in Indonesia). In southern and southeastern Asia, teak plantations have recently supplanted the native forest. Christmas trees are frequently cultivated on plantations.

For the commercial production of forest products, industrial plantations are actively managed. Industrial plantations are frequently very vast. Individual blocks typically have an even age distribution and are composed of just one or two species. They may be native or invasive species.

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a 25 year-old patient presents complaining of a sore throat and swollen glands in the back of her neck. upon exam, erythema and white purulent exudates are noted in the tonsillar region. results of streptococcal antigen tests were negative and the patient’s monospot test is pending. cbc with differential normal blood values with the exception of 60% lymphocytes on the differential, 30% of which are "atypical."which is the most likely cause of the patient’s condition?

Answers

Answer:

The reason why they have a sore throat is because they most likely have mono

Explanation:

If your throat is sore and based on the information listed the only possible reason would be is that they have mono

For every one glucose molecule, which step in cellular respiration produces the greatest amount of atp?.

Answers

The electron transport system

          The stage that produces most of the ATP during cellular respiration is the electron transport system (ETS).

What is Electron transport system ?

The ATPase enzyme and ETS complexes are housed in the inner mitochondrial membrane.The function of ETS in mitochondria generates an electrochemical gradient between the matrix and the inner mitochondrial space (High at inner mitochondrial space and low at matrix).ETS gets electrons from the oxidation of NADH and FADH2The ATPase enzyme situated in the inner mitochondrial membrane allows protons to flow down their electrochemical gradient.This proton motive force is utilized for phosphorylation of ADP into ATP.Thus the production of ATP through ETS is called oxidative phosphorylation as both oxidation and phosphorylation take place.

      Adenosine triphosphate (ATP) is the cellular energy source for use and storage. ATP is a nucleoside triphosphate with the structure of a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate groups. Adenosine triphosphate is an organic compound that supplies energy to many processes in living cells, including muscle contraction, nerve impulse propagation, condensate dissolution, and chemical synthesis. In the absence of catalysts, ATP is stable in aqueous solutions between pH 6.8 and 7.4. At higher pH levels, it rapidly hydrolyzes to ADP and phosphate. Living cells keep the ATP/ADP ratio ten orders of magnitude higher than equilibrium, with ATP concentrations fivefold higher than ADP concentrations.

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A researcher is interested in the structure of the flagellar motor, a series of proteins embedded in the cell wall and plasma membrane of E. coli and many other prokaryotes. Which microscopic technique would be appropriate to determine which proteins of the flagellar motor are associated with the cell wall?


A.
scanning electron microscopy (SEM) because it would generate a 3D image of the surface of the cell wall at high magnification

B.
phase-contrast microscopy because it would introduce contrast between the flagella and the bacterial cell

C.
transmission electron microscopy (TEM) because it would provide a cross section of the cell wall at high magnification

D.
brightfield microscopy because it would show where the flagella are attached to the cell

Answers

The technique that could be used in order to study  which proteins of the flagellar motor  are associated with the cell wall is the scanning electron microscopy (SEM) because it would generate a 3D image of the surface of the cell wall at high magnification

What is the cell?

The cell is the smallest unit of  a substance which is the lowest level of life. We know that all cells come from pre existing cells and the study of the cells can only be made possible using the microscope. The microscope is a device  that can be able to probe.

The scanning electron microscope is the kind of microscope that could be used to see into the interior portions of the cells and this is essential for study as all the structures that are connected to the cell wall can be see quite clearly when we are using this very method.

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Explain one of the cycles: water, oxygen, carbon, or nitrogen. ( include at least 3 exchanges within the cycle) .

Answers

Answer:

water cycle is the movement of water from the atmosphere to the earth and from the earth to the atmosphere.

water cycle is need for balance.

how water gets to earth: rainfall or precipitation

how water leaves the earth: evaporation, transpiration

Which of the cells characterized in the chart above is a plant cell?

Answers

Answer:

cell A

Explanation:

because only plant cells have chloroplast

A student obverse’s a cell under a microscope. She sees a cell wall and a nucleus. What type of cell is she observing?

Answers

Answer:

Pretty sure it's a Eukaryotic plant cell!


As ocean waves approach shore, their velocity decreases. How does a decrease in velocity affect the frequency and wavelength of the waves
entering the shallow water?

Answers

Velocity is the rate at which something moves in a specific direction. as the speed of a car driving north on a highway or the pace at which a rocket takes off. Because the velocity vector is scalar, its absolute value magnitude will always equal the motion's speed.

Sea waves slow down as they get closer to land. The following equations explain how a wave's velocity, wavelength, and frequency are related:

v= f x λ

the frequency f

equals wavelength

f = 1/λ ..............(1) (1)

In this way, as the wave expands in speed, the wavelength and frequency also rise depending on the circumstance (1). When the velocity drops, the frequency and wavelength both start to get smaller.

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The corolla of a morning glory forms a shape called

Answers

Answer:

Explanation:

The collection of all the petals of a flower is known as the corolla. It can be of different shapes like clawed, fimbriate, laciniate, spurred, and saccate. They can be irregular or regular.

20. Explain how the transfer of energy can be tracked as energy flows through a natural system. In other words, why are photosynthesis and cellular respiration together called “the energy cycle”?

Answers

Photosynthesis and cellular respiration are together called “the energy cycle” because the vast amount of biomass on Earth is sustained by these metabolic pathways and they are interrelated processes.

What are photosynthesis and cellular respiration?

Photosynthesis and cellular respiration are two metabolic pathways that play fundamental roles to sustain life on the Earth.

Photosynthesis is a series of metabolic reactions through which plants and also algae generate biomass in the form of simple carbohydrates such as glucose, which is achieved using sunlight and carbon dioxide generated through cellular respiration.

Moreover, cellular respiration generates energy in aerobic organisms which requires the use of oxygen as a reactant obtained by the mechanism of Photosynthesis.

Therefore, with this data, we can see that photosynthesis and cellular respiration are fundamental processes to sustain life on the earth's planet and they are interrelated because the products of photosynthesis are used as reactants in cellular respiration.

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Greenhouse gases in the atmosphere absorb infrared radiation from earth’s surface and re-radiate some of it back to earth. Which of these gases have the most significant impact on the temperature of earth’s atmosphere?.

Answers

Carbon dioxide has the most significant impact on the temperature of the earth’s atmosphere.

CO2 is a greenhouse gas and is essential for the existence of life on Earth. It traps the heat and warms up the inside of the atmosphere of Earth.

However, the temperature of Earth drastically changes when the level of CO2 in the atmosphere increase. As the level of carbon dioxide increases, it blocks the energy re-emitted earth back to space. This energy does not leave the atmosphere and hence the average temperature of the earth starts to increase.

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8) a general rule relating the capacity of a specific animal's digestive system to provide adequate access to substrates for biosynthesis of cellular components, as well as fuel molecules needed for atp production, is that the animal should have access to

Answers

A general rule relating to the capacity of a specific animal's digestive system to provide adequate access to substrates for the biosynthesis of cellular components is that D) the diet matches the  "food pyramid" for the species.

In the field of biology, a food pyramid determines the optimal levels of a particular serving that an organism needs to eat in order to fulfill the required nutrition level.

It is only when the diet matches the food pyramid that an animal's digestive system will be able to provide substrates that are required for the biosynthesis of cellular components. These substrates are derived from the energy of the food.

When the diet matched the food pyramid, then there will be the required nutrition available needed for the production of ATP molecules.

Although a part of your question is missing, you might be referring to this question:

A general rule relating the capacity of a specific animal's digestive system to provide adequate access to substrates for biosynthesis of cellular components, as well as fuel molecules needed for ATP production, is that the animal should have access to

A) a high-protein, low-carbohydrate diet.

B) a diet low in lipids and high in protein.

C) a low-calorie diet with a large intake of fluids, especially water.

D) a diet that matches the "food pyramid" for the species.

E) a diet that maximizes vitamins and minerals.

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