A physical model is often used to show the complex structures that exist in
many cells. Which sentence best describes a benefit of using a model of a
cell?

The mass and height of a stationary item affect its gravitational potential energy. The gravitational potential energy of an item increases with height above the earth.

As a result, the gravitational potential energy of an item relies on its mass, height above the surface of the earth, and gravitational acceleration.

As gravitational potential energy is exactly proportional to an object's height above the zero point, an object's gravitational potential energy will double when its height is doubled. With a tripling of height, the gravitational potential energy will treble.

To know more about potential energy visit:-

https://brainly.com/question/15764612

#SPJ1

Question:

The gravitational potential energy of a stationary object depends on its

A. height and velocity

B. mass and velocity

C. mass and height

D. mass, height, and velocity

Which of the above options is correct?

As pollution abated, the light forms of the peppered moth increased in the population due to a phenomenon known as industrial melanism. Initially, in areas subject to severe air pollution, the dark form of the peppered moth had a survival advantage because it was better camouflaged on trees that were darkened by pollution. This allowed the dark moths to escape predation by moth-eating birds, as they were less easily seen.

However, as pollution levels decreased and the environment became less polluted, the tree trunks began to lighten in color. This change created a shift in selective pressures on the moth population. The lighter form of the peppered moth, which was better camouflaged on the lighter tree trunks, gained a survival advantage over the darker form. Moth-eating birds found it more difficult to spot and capture the light-colored moths against the lighter backgrounds.

Over time, this change in selective pressures led to an increase in the frequency of the light forms of the peppered moth in the population. The light-colored moths had higher survival rates and were able to pass on their genetic traits to future generations, resulting in a gradual shift in the moth population towards the lighter form.

Therefore, the decrease in pollution favored the light forms of the peppered moth because they provided better camouflage against the lighter tree trunks, reducing predation and increasing their overall fitness.

Know more about Air Pollution here:

https://brainly.com/question/31023039

#SPJ11

decrease in biodiversity caused by decreased pH of seawater is the correct option. thus, option A is correct.

The plants, animals, and other species that exist in salt water found in the sea, ocean, or brackish water found in coastal estuaries are referred to as marine life, sea life, or ocean life. Marine life has a fundamental impact on the planet's nature.

More carbon dioxide is evaporating into the ocean as a result of human-driven increases in atmospheric carbon dioxide concentrations. Currently, the ocean has an average pH of 8.1, which is basic (or alkaline), but when more CO2 is absorbed, the pH drops and the ocean turns more acidic which results in a decrease in biodiversity.

Learn more about marine life here:

https://brainly.com/question/11332916

#SPJ1

Answer:

The model only shows the sensory pathway of the reflex arc and does not show the motor pathway. The neuron loop / circuit is incomplete and therefore it does not show how Zoe would react to the nail in her leg

Explanation:

Answer:

The model doesn’t clearly show the neuromuscular junction. This aspect is a crucial part of the process because the nerve impulse triggers calcium channels to open, which stimulates the process of muscle contraction.

Hope this helps!

Explanation:

Sample answer

Answer: the answer is D all fungi break down substances to make their food.

Explanation:

C. To point out that teachers can make significant contributions to the field.

Gregor Mendel was an Austrian scientist and monk who is known as the father of genetics for his groundbreaking work on the study of heredity. His work demonstrated that the inheritance of traits in organisms follows particular laws, now referred to as the laws of Mendelian inheritance. By highlighting Mendel's success as a teacher and scientist, the section on teaching agriscience is emphasizing that teachers can make significant contributions to the field.Plant height, pod shape and colour, seed shape and colour, blossom location and color-these are the seven pea plant traits that Mendel studied.

learn more about Gregor Mendel refer:brainly.com/question/1558871

#SPJ1

Answer:

 its cell body, dendrites, and axon

The life-cycle theory of consumption can be summarized as follows: people want instant gratification and seldom worry about the future. The correct option is (B).

This statement is incorrect. The life-cycle theory of consumption actually suggests the opposite. According to this theory, individuals adjust their consumption patterns over their lifetime to ensure a smooth and consistent level of consumption.

It recognizes that individuals have different income and expenditure patterns at different stages of their life.

The theory posits that individuals tend to save and accumulate wealth during their working years when their income is higher.

This allows them to maintain their consumption levels during retirement when their income typically decreases. Retired people are expected to draw from their accumulated savings to support their consumption needs.

In contrast, working individuals often have higher consumption needs due to various factors such as raising a family, paying off debts, and investing in education or housing.

They may have less disposable income available for saving during this phase of their life.

Therefore, the life-cycle theory of consumption suggests that retired people need to draw on their savings accumulated during their working years to support their consumption, and it emphasizes the importance of long-term financial planning and saving.

To know more about "Life-cycle theory " refer here:

https://brainly.com/question/30485362#

#SPJ11

The organ the tissue sample was collected from is a reproductive organ such as testes or ovary.

Metaphase is a stage of mitosis and meiosis, that follows prophase and comes before anaphase, during which condensed chromosomes become aligned before being separated.

Metaphase occurs once in mitosis but occurs twice in meiosis, which gives it the suffix metaphase I and II.

Meiosis is a kind of cell division of a diploid cell into four haploid cells, which develop to produce gametes. In essence, meiosis is for reproductive purposes solely.

According to this question, a scientist studying a tissue sample from a sheep under a microscope finds some cells in metaphase II. This means that the tissue sample emanated from a reproductive organ.

Learn more about meiosis at: https://brainly.com/question/29383386

#SPJ1

Answer:

The answer to your question ( I think) is,

4. They influence the rate of chemical reactions

Explanation:

I hope this helps:)

I am very sorry if i am wrong

Answer: The question is is incomplete, here are the options.

A. Separating the two groups decreases the chance that the two groups will diverge

B. Traits that form in one group from evolutionary forces quickly spread through both populations

C. Forces like natural selection and genetic drift affect the genes of the two subgroups differently

D. Gene flow is increased in the two subgroups that are formed

The correct Option is C.

C. Forces like natural selection and genetic drift affect the genes of the two subgroups differently.

Explanation:

Forces of natural selection and genetic drift affect the genes of the two subgroups differently because there are differences In the way they are natural selected and genetic drift.

Natural selection is the different phenotype or traits developed by different organisms who h make them to adapt, survive and reproduce than others in their environment. The two sub groups have different phenotype Expressed which cause them to develop different trait.

Genetic drift refers to change or variation in frequency of genes in animals overtime. Genetic drift occur at different rate in different population of organsim which lead to development of different trait in the subgroup.

Answer:The occurrence in one subgroup of mutations that are not passed to the other through reproduction

Explanation: just did the test

If a plant has vascular tissue, megaphylls, and seeds, but not flowers, then it is a gymnosperm. Correct answer: letter E.

Because this type of plants have all these characteristics and reproduce by seeds and pollen, and are the dominant plants in the preangiosperm world.

If a plant has vascular tissue, megaphylls, and seeds, but not flowers, then it is a(n):

Group of answer choices:

A. lycophyte

B. Fern

C. Bryophyte

D. Angiosperm

E. Gymnosperm.

Learn more about the Gymnosperm:

https://brainly.com/question/16166196

#SPJ4

Answer:

endospore is the awnser

Explanation:

Answer:

industrial waste

Explanation:

Answer: water, oxygen, and food

Explanation:

The secondary structure of a protein is formed by the backbone of the amino groups, rather than the side groups

Protein primary structure is the linear sequence of amino acids in a peptide or protein. By convention, the primary structure of a protein is reported starting from the amino-terminal end to the carboxyl-terminal end. Protein biosynthesis is most commonly performed by ribosomes in cells.

Protein secondary structure is the local spatial conformation of the polypeptide backbone excluding the side chains. The two most common secondary structural elements are alpha helices and beta sheets, though beta turns and omega loops occur as well.

To know more about protein visit the link

https://brainly.com/question/29776206

#SPJ11

Answer:

During this process the messenger RNA and the transfer RNA are manufactured

Explanation:

These RNAs are necessary to be able to comply with the formation of proteins, since they read the genetic code and after this they assemble the reading to make proteins of structure, function and support.

This is how cells when dividing or multiplying separate their genetic code by replicating.

As a molecule of oxygen passes from pulmonary alveolar air into the blood, it passes through the layers of the respiratory membrane in the following order:1. Layer of fluid lining the alveolar surface.2. Epithelial cells of the alveolar wall.3. Basement membrane of the alveolar wall.

4. Interstitial fluid.5. Basement membrane of the capillary wall.6. Endothelial cells of the capillary wall.The respiratory membrane is the interface between alveolar air and blood where gaseous exchange occurs. It includes the walls of the alveoli, their epithelial lining, and the endothelial cells of the adjacent pulmonary capillaries.The oxygen that is inhaled passes through the respiratory membrane in the following order:1.

Layer of fluid lining the alveolar surface.2. Epithelial cells of the alveolar wall.3. Basement membrane of the alveolar wall.4. Interstitial fluid.5. Basement membrane of the capillary wall.6. Endothelial cells of the capillary wall.The oxygen diffuses from the alveolar air across the respiratory membrane to the blood in the capillaries, while carbon dioxide diffuses in the opposite direction.

To know more about respiratory membrane visit:

https://brainly.com/question/31558831

#SPJ11

Answer:

Definition:

The endosymbiotic theory does NOT provide an explanation for C. the two membranes of the nuclear envelope.

The endosymbiotic theory is a widely accepted hypothesis that explains the origin of eukaryotic cells. According to this theory, eukaryotic cells evolved from prokaryotic cells through a process called endosymbiosis, in which one prokaryotic cell engulfed another, forming a symbiotic relationship.

The endosymbiotic theory explains the double membrane of chloroplasts (A) and the presence of ribosomes (D) and DNA (E) in mitochondria and chloroplasts, as these are all features of the prokaryotic cells that were engulfed. The theory also explains the cristae in mitochondria (B), as they are thought to be derived from the folded inner membrane of the engulfed prokaryotic cell.

However, the endosymbiotic theory does not provide an explanation for the two membranes of the nuclear envelope (C), as this structure is unique to eukaryotic cells and is not found in prokaryotic cells.

Here you can learn more about the nuclear envelope

https://brainly.com/question/13334437#

#SPJ11

Answer:

Apocrine

Explanation:

Option D is Correct. To pick up electrons at the end of the electron transport chain. Oxygen is an essential component of cellular respiration, the process by which cells generate energy from nutrients.

During cellular respiration, oxygen is taken in by the cell and combined with glucose to produce carbon dioxide, water, and energy in the form of ATP (adenosine triphosphate).

The process of cellular respiration occurs in three main stages: glycolysis, the Krebs cycle, and the electron transport chain. In glycolysis, glucose is broken down into two molecules of pyruvate, producing a small amount of ATP and a molecule of NADH (nicotinamide adenine dinucleotide). The pyruvate then enters the Krebs cycle, where it is further broken down to produce more ATP, NADH, and FADH2 (flavin adenine dinucleotide).

In the electron transport chain, NADH and FADH2 transfer electrons to a series of protein complexes, which pump hydrogen ions across the membrane of the mitochondria. As the hydrogen ions flow back into the cell, they create a proton gradient, which is used to generate ATP through a process called chemiosmosis.

Learn more about Oxygen visit: brainly.com/question/4175139

#SPJ4

Answer:

nucleus – the major organelle of the amoeba, located centrally; it controls reproduction (it contains the chromosomes) and many other important functions (including eating and growth). pseudopods – temporary “feet” that the amoeba uses to move around and to engulf food.

Explanation:

Hope it helps you

Mark my answer as brainlist

have a nice day

50% of the time required to complete a full cycle do the cells typically spend in interphase

A cell is the basic structural and functional unit of all living organisms. Cells are very small in size, usually only a few micrometers across. They are formed by the combination of atoms and molecules, and they contain the biological machinery necessary for life. Cells are the building blocks of all living things and are responsible for the growth, repair, and maintenance of the body. Cells come in many shapes and sizes and perform different functions in different organisms. In humans, cells make up the organs, tissues, and systems of the body.

Interphase is the longest and most complex phase of the cell cycle, occupying the majority of the cell's life cycle. It is composed of three distinct sub-phases: G1, S, and G2. During interphase, the cell grows, synthesizes proteins, and prepares for cell division. On average, cells typically spend 95% of the time required to complete a full cell cycle in interphase. During this stage, the cell's nucleus and organelles are actively working to ensure that the cell is prepared for mitosis and cytokinesis. As a result, the cell replicates its DNA and produces the proteins, lipids, and carbohydrates required for cell division.

To know more about cell click-

https://brainly.com/question/13920046

#SPJ4

Complete questions as follows-

The average amount of time spent by a particular type of eukaryotic cell in each phase of the cell cycle

Based on Figure 1, what percent of the time required to complete a full cycle do the cells typically spend in interphase?

A) 5% percent

B) 35% percent

C) 50% percent

D) 95% percent

Answer:

Explanat}

there is long  term storage for nuclear  waste

It has been said that deoxyribonucleic acid isolated from cells resembles strands of mucus, limp, thin, white noodles, or a network of fragile, limp fibers.

1. The well-known DNA double-helix molecule can be observed under a microscope.

2. As the DNA is collected on the spooling rod, a viscous, clotted mass will be visible.

3. The size of the DNA fragments, which are significantly larger than the small biomolecules like amino acids and small carbohydrate sugars, has an impact on the amount of DNA that gets spooled.

4. While salt and alcohol make DNA insoluble, it is soluble in water.

5. A precipitate can be spooled out after the alcohol layer has been gently stirred with a sterile pipette.

Due to the presence of polar chemical groups on the exposed ends, x DNA spools onto the stick or glass rod. The ends of the DNA are drawn to the stirrer because glass and wood are both polar materials.

To Learn more about microscope visit:

https://brainly.com/question/6686502

#SPJ4

Triclosan is a popular ingredient in cleaning products, specifically for killing bacteria, and is known for its antibacterial abilities.

After cleaning a desktop with a solution containing triclosan, it is very likely that live E. coli will not remain on the desktop. Many species of bacteria, including E. coli, have been successfully killed or prevented from growing by triclosan. The bacterial cell membrane is damaged by its mechanism of action, which also inhibits vital cellular processes.

While the addition of triclosan to the cleaning solution increases the likelihood of removing live E. coli, other elements and conditions must also be considered to determine the full effectiveness of the cleaning process.

Learn more about cleaning solution, here:

https://brainly.com/question/13206860

#SPJ1