Find the mass of a book that has weight of 14.7 newtons.

Answer:

Homeostasis

Explanation:

Homeostasis is an organism ability to maintain equilibrium [which means balancing opposing forces]. When we sweat our body it is trying to stop overheating.

Answer:

homeostasis would most likely be the answer. homeostasis is an organisms ability to maintain equilibrium (which means when opposing forces are balanced). When a human sweats, the body is trying to keep from overheating. this means the body is keeping itself at one temperature. Hope this helped

Explanation:

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Answer:

Rutherford coined the term protons and is positively charged particle present inside the nucleus of the atom. It has its own mass and is slightly less than the mass of the neutron.

Explanation:

It is believed that the protons are made up of 2 up quarks and 1 down quark. It helps to bind the nucleus together. It attracts negatively charged particle called as electron towards itself. Electrons are arranged in the orbit of the atom.  

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Answer:

Four

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Explanation:

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Answer:

There are four haploid daughter cells.

Explanation:

Answer:

Density is the characteristic property of the substance. Density is related to mass and volume of the substance.

Explanation:

Density of the substance decides whether it will float or submerge in water or any other liquid. If the substance is denser than the liquid then it will sink and if its density is lower than the liquid then it will float.

Density is written in kilogram per cubic meter. For instance, the density of oil is lesser than water and hence, it floats.

Answer:

Matter is anything that has mass and takes up space. Air is all around us, that is what we breath- oxygen-

Explanation:

It's easier to prove that air takes up space.  As you blow into the balloon it will expand and that is a way to prove air is matter.

Answer:

Carbohydrates and lipids are both macronutrients and provide several key functions to the human body.

Explanation:

These nutrients have similar chemical structures and the body uses carbohydrates and lipids in similar ways. Carbohydrates are molecules composed of carbon, hydrogen and oxygen, with a ratio of one atom of carbon and two atoms of hydrogen for every atom of oxygen. Lipids have the same elements as carbohydrates, but differ in their linkage.

Answer:

5,000

Explanation:

theirs 5 x 10^3

the 10^3 means 3 -zeros and the 5 would stay the same, so if you have the 5 in the front and the 3 zeros in the back it would be 5,000

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The population decline of the Miami Blue butterfly is probably due to habitat loss, pesticide use, and climate change, similar to other butterfly species that rely on specific plants for survival.

The decline of the Miami Blue butterfly population in South Florida has likely been caused by several factors, including habitat loss due to development and construction, use of pesticides, and possibly climate change. Similar to the plight of other butterfly species like the Karner blue butterfly, which depends on the wild lupine plant for its larval development, the Miami Blue butterfly might also have specific host plants that are threatened by environmental changes. Additionally, limited availability of host plants like the butterfly weed for monarch butterflies indicates how essential specific flora is to butterfly populations.

Ecologists aim to understand the close interspecies relationships, as with the Karner blue butterfly and the wild lupine, and how factors such as wildfire suppression, which has reduced the lupine, impact the butterflies. In the case of the monarch, the focus on planting milkweeds shows the importance of preserving the plants on which butterflies rely. Examining these parallels can yield insights into the factors most likely affecting the Miami Blue butterfly.

Answer: The short answer is they would have lost thir glucose.

Explanation: It is the one thing that produces glucose

Answer:

The electron transport system takes place within the cristae of the mitochondria, where the cytochromes (enzymes) and coenzymes exist. It is a series of proteins that move electrons through a membrane within mitochondria to produce a gradient of protons that activates the production of adenosine triphosphate (ATP).

The electron transport system

in the light dependent reaction of photosynthesis plays a crucial role in the creation of electrons that are employed as precursor for NADPH production.

If it was diabled, there would be no flow of electrons from PSII to PSI. Ferredoxin would be dormant since there is no electrons to pass to NADP+ which in turn will lead to no production of NADPH.

The NADPH and the respective molecules that are made in the course of the light dependent reaction are employed in the course of the dark reaction to form sugar molecules.

So, if the electron transport system in the light-dependent reaction of photosynthes is disabled, glucose molecule will not be formed in the course of the dark reaction.

Answer:

The correct option is D. Freshwater protozoans respond to the hypotonic environment by removing water through a contractile vacuole.

Explanation:

A hypotonic environment can be described as a condition in which the concentration of water is more outside the cell than the inside of a cell. In such a condition, water tends to enter the cell through osmosis. This can cause the cell to be filled excessively with water and burst.

To avoid such circumstances, the freshwater protozoans contain contractile vacuoles. The contractile vacuoles remove excess water from the cell.

answer: is d

Explanation:

Answer:

A

Explanation:

The base C always pairs with G, and A pairs with T or sometimes U,

C - G

A - T

The correct pairing of DNA bases, based on Chargaff's rules, is C with G, and A with T. This is due to the structure of these molecules and the number of hydrogen bonds they can form.

In the universe of biology, the DNA bases are paired in a standard and specific manner which is essential to the proper functioning of DNA replication and the transcription of genes. These pairing rules are defined by scientist Erwin Chargaff's rule, also known as Chargaff's rules.

According to these rules, Cytosine (C) always pairs with Guanine (G), and Adenine (A) pairs with Thymine (T). Hence, the correct option among those provided would be A. C with G, and A with T.

This specific pairing is due to the structure of the molecules and the number of hydrogen bonds they can form: C and G form three hydrogen bonds between them whereas A and T form two hydrogen bonds. Any other pairing won't hold the DNA strands together sufficiently.

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Answer:

Sea stars carry out life functions in diverse -and unique- ways (read below) and are able to respond to environmental changes through adaptations such as temperature regulation.

Explanation:

Sea stars are invertebrate organisms that belong to the Phylum Echinodermata and are adapted to life in the ocean. They carry out life functions in diverse kind of ways. Here are some examples:

Response to environmental changes:

According to new research evidence, these marine creatures possess unique adaptations that are extremely helpful in regard to environmental changes. They are able to regulate their own temperature during changing tides. During high tides, sea stars absorb cold water that is later used when temperatures are too hot due to warm water and sunlight. This adaptation is crucial to respond to environmental changes such as climate change.

The scientific investigation without dependent and independent variables is observing and counting bird populations, which is an observational study and not a controlled experiment.

The scientific investigation that does not include dependent and independent variables is observing and counting bird populations, which is an example of an observational study. In this type of investigation, researchers are simply making observations without manipulating any factor. Therefore, there isn't an independent variable being altered to see its effect on a dependent variable. However, in the other three options provided, there is a clear manipulation of one variable (the independent variable) to see its effect on another variable (the dependent variable), which classifies them as controlled experiments.

For example, in studying the effect of temperature on bacterial reproduction rates, temperature is the independent variable, and the bacterial reproduction rate is the dependent variable. Likewise, when investigating the effect of mass on the speed at which an object falls, mass is the independent variable, and the falling speed is the dependent variable. In testing a model car's air flow resistance at different wind speeds in a wind tunnel, wind speed is the independent variable, and air flow resistance is the dependent variable.

Answer:

B

Explanation:

In a hypertonic environment, a cell will shrink due to water loss. In a hypotonic environment, a cell will swell due to water gain. In an isotonic environment, the cell will maintain its size as there is no net water movement.

Whether a cell will shrink or swell depends on the type of environment it is in. When it is placed in a hypertonic environment, which has a higher concentration of solutes, the water will leave the cell to maintain equilibrium, and the cell will shrink. This process is known as crenation.

However, if the cell is in a hypotonic environment where the concentration of solutes is low, water will move into the cell to balance out the solute concentration, causing the cell to swell. If the intake of water goes to excess, the cell may burst, a process known as lysis, due to the excessive influx of water.

Finally, in an isotonic environment, where the concentrations of solutes inside and outside the cell are the same, there is no net water movement, so the cell will neither swell nor shrink.

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Answer:

[tex]B.[/tex]  [tex]Abiotic[/tex]  [tex]Factors[/tex]

Explanation:

Abiotic factor: Nonliving chemical and physical parts, just like temperature and soil in an ecosystem

As far as the ecosystem is concerned, soil and temperature are abiotic factors.

The biotic factors of the ecosystems are living factors. They consist of all the living organisms and their relationship with each other in the ecosystem.

The abiotic factors are also known as nonliving factors. They include soil, temperature, pressure, salinity, wind, etc.

Thus, temperature and soil are parts of the nonliving factors of the environment.

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Answer:

Explanation:

Water reacts with Carbon dioxide to form Carbonic acid, please see equation below:

H2O (water) + CO2 (carbon dioxide) ⇄ H2CO3 (carbonic acid)

Carbonic acid is a weak acid and some of it dissociates to Hydrogen ions and Hydrocarbonate ions, please see equation below:

H2CO3 (carbonic acid) ⇄ H+ (hydrogen ions) + HCO3-

Carbon dioxide dissolves in water to form carbonic acid, which then ionizes to bicarbonate and hydrogen ions in a dynamic chemical equilibrium. This series of reactions plays an essential role in regulating CO₂ and pH levels in the human body and in the carbon cycle in nature.

The relationship between water, carbon dioxide, carbonic acid, bicarbonate, and hydrogen is all linked by a series of chemical reactions. First, carbon dioxide (CO₂) from the atmosphere dissolves in water. This dissolved carbon dioxide then combines with water molecules to form carbonic acid (H₂CO3). The carbonic acid then ionizes in water to form bicarbonate (HCO3-) and hydrogen ions (H+). This process is reversible and forms a dynamic chemical equilibrium in water systems. For example, in the human body, these reactions are actively involved in the transport and regulation of CO₂ and pH levels in the blood.

Moreover, this process also occurs in nature, more than 90 percent of the carbon in the ocean is found as bicarbonate ions. These bicarbonate ions combine with seawater calcium to form calcium carbonate (CaCO3), which contributes significantly to marine organism shells and eventually forms part of the largest carbon reservoir on Earth, limestone.

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Answer:

The organism Cyanobacteria was the first organism to inhabit t he Earth prior to the rise oxygen in the atmosphere.

Explanation:

The single-celled Cyanobacteria were known to be the first oxygen-producing organisms even before the rise of oxygen in the atmosphere or the "Great Oxidation Event," way back 3.5 million years ago. They were able to survive the harsh conditions of the Earth by photosynthesis. During this process, the Cyanobacteria would use sunlight, water and organic carbon dioxide  to produce sugar for their energy. As a waste product, oxygen was released to the atmosphere. Accumulation of the oxygen in the atmosphere was increased by the presence of the volcanic gases like hydrogen, reacting with the oxygen. This caused a reduction reaction and made a more viable oxygen-rich atmosphere.

Answer:

the five tissues that makes up this hypothetical organs are eipthelial, connective, muscle, and nervous tissue

Answer:

The five tissues, which could make up this hypothetical organ are smooth muscle tissue, stratified squamous epithelial tissue, loose connective tissue, dense irregular connective tissue, and nervous tissue.  

The stratified squamous epithelial tissue possesses the tendency to resist mechanical stresses and abrasion. It comprises of the scale-like cells that compile together in layers and provide a barrier, which is resistant to wear and tear and abrasions.  

The smooth muscle tissue possesses the tendency to contract involuntarily when instigated by the cells of the nervous system. The dense irregular connective tissue possesses the tendency to resist tension in various distinct planes of force. This is a type of connective tissue formed of collagen fibers aligned randomly.  

The loose connective tissue also called areolar tissue is made up of elastin, collagen, and reticular fibers, and ample ground components are the one tissue that glues all the other tissues together. The nerve tissue refers to a unique kind of tissue accountable for communication within the body that stimulates the contracting cells.  

Answer:

The plant cell is said to have become "turgid" i.e. swollen and hard.

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Explanation:

Final answer:

When a plant is placed in pure distilled water, its cells will swell due to the hypotonic nature of distilled water resulting in turgidity, which is beneficial for maintaining plant structure.

Explanation:

When a plant is placed in pure distilled water, its cells will swell and become turgid. This is because pure distilled water is a hypotonic solution relative to the cells of the plant. In a hypotonic environment, water enters the cell due to osmosis, increasing the water volume inside the cell's central vacuole, resulting in turgor pressure which stiffens the cell walls. Unlike animal cells, plant cells are equipped with rigid cell walls that provide protection against bursting. When a plant cell is in a hypotonic solution, it will not burst but will instead become turgid, which is the ideal state for plant cells as it helps maintain the structure of the plant.

In contrast, when plant cells are placed in a hypertonic solution like sea water, they undergo plasmolysis, where water diffuses out of the cells causing them to shrink and the plant to wilt.

Answer:

Explanation:

Key developments in blood transfusion techniques

• Animal experiments over the years 1900-1916 gradually enabled transfusion to become the routine technique it is today. The key developments were:

• George Crile (1907) perfected the technique of transfusion from artery to vein using dogs, and described its application in 32 patients.

• Hustin (1914) showed that addition of sodium citrate could prevent blood from clotting and that citrated blood could be safely transfused into dogs.

• Richard Lewisohn (1915) determined the maximum amount of citrate that could be transfused into dogs without toxicity and thus determined the optimum concentration that could be added to blood for the best anticoagulant effect.

• Weil (1915) showed that citrated blood could be stored for 2 days and still be effective when transfused into guinea-pigs and dogs which had lost blood.

• Rous and Turner (1916) used rabbits to demonstrate that, with certain additives and proper treatment, citrated blood could be stored for 14 days and still be successfully transfused.

Through these animal experiments, the prolonged storage of blood without clotting thus became possible, so enabling the establishment of blood banks, and blood transfusion as a routine procedure.

The punnett square would look like this

The punnett square is a resource that was conceived by RC Punnett, a collaborative geneticist for William Batenson (both lived between the end of the 19th century and the beginning of the 20th century, actively participating in the rediscovery of Mendel's work), which greatly facilitates the making of crosses between F-1 heterozygotes, by filling in the boxes that compose it with the genotypes resulting from the crossing performed.

The Punnet square of two organisms where one has the Tt genotype and the other the Tt genotype is shown in the image below:

Answer:

D

Explanation:

Staining allows for visualization of cells and its organelles under a microscope because cells in their natural form are either transparent or translucent.  There are different staining techniques depending on the type of microscope being used, the type of cell being visualized, identification of cells, and etcetera. In this case iodine is used because it is well taken by starch molecule in the onion cells hence increasing visualization of the cell.

The possible solution that Josey can employ that will make her see the details of the onion cell under a microscope is: D. Josey can apply a stain to her sample, such as iodine.

Most cells and cell structures appear translucent if you try viewing them with a microscope in their natural form. They are not transparent.

To make these cells and their organelles transparent when viewing under a microscope, different staining techniques are usually employed, depending on the type of cells and the microscope being used.

Onion cells can be made transparent under a microscope if it is stained with iodine.

Therefore, the possible solution that Josey can employ that will make her see the details of the onion cell under a microscope is: D. Josey can apply a stain to her sample, such as iodine.

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Answer:

diploid organisms

Explanation:

An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.

Answer:

Explanation:

The offspring received one allele from each parent. The alleles were separated during gamete formation before they were passed to the offspring.  Green pod color is dominant, resulting in the offspring having the green pod color.

Answer:

The offspring received one allele from each parent. The alleles were separated during gamete formation before they were passed to the offspring. Green pod color is dominant, resulting in the offspring having the green pod color.

Explanation:

This was the sample answer on e2020

The factors that may affect variables are called theories. The correct option is C.

A variable is defined as any property, number, or number of items that can be counted or measured. A variable is also known as a data item.

Dependent variables are so designated in spite of  the thought that their values are to be investigated in a laboratory activity.

This can be done under the presumption or requirement that they are dependent on the value of other variables due to some law or rule.

A dependent variable is one that changes as a result of the independent variable's manipulation.

It is the desired outcome, and it is dependent on your independent variable. In statistics, dependent variables are often referred to as output responses.

Thus, the correct option is C.

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Answer:

A

Explanation:

The deep cooler currents in the oceans have more nutrients because of several factors;

When the trade winds push the warm waters towards the east, the cooler water from the bottom upwell (from the west in a cyclic fashion) to replace the displaced water by the winds. They bring with them nutrients and oxygen that is great ‘fodder’ for plankton. The plants are then fed on by smaller fish like shrimps. The smaller fish are then preyed on by bigger fish hence sustaining food chains/webs.

Answer:

In chloroplasts

Explanation:

It is produces in the chloroplasts of the cell. Glucose is a simple sugar and photosynthesis produces the glucose and then glucose is transported into the cells.  Chloroplasts are making sugar during the process of converting light energy into chemical energy and those are stored in glucose.

Chloroplasts are the food producers and we can find them in plant cells and eukaryotic algae.