Which strategy should you use to determine the number of neutrons in
an atom?

Answers

Answer 1

Answer:

For all atoms with no charge, the number of electrons is equal to the number of protons. The mass number, 40 is the sum of the protons and the neutrons. To find the number of neutrons, subtract the number of protons from the mass number. number of neutrons=40−19=21.


Related Questions

What are the greatest challenges for solving human impacts to ecosystems?

Answers

Answer:

The fact people don't want to change may be the greastest impact. Humans want answeres quick and easy we are willing to destory the earth for our ways as we have been for 1000ths of years. We never change we evolve but don't change our ways.

Explanation:

Hope This Helps

Have A Great Day

~Zero~

Glucose is a molecule that can move across the cell membrane. If the concentration of glucose is higher outside the cell then what will happen by the process of diffusion?

Answers

Answer:

The water inside the cell leaves outside

Explanation:

The outside of the cell is in high concentration . As a result, the concentration of glucose outside the cell remains higher than the concentration inside the cell, but the glucose molecule is too large to pass through the plasma membrane unassisted. The water inside the cell leaves outside

Answer:

Answer:

The water inside the cell leaves outside

Explanation:

The outside of the cell is in high concentration . As a result, the concentration of glucose outside the cell remains higher than the concentration inside the cell, but the glucose molecule is too large to pass through the plasma membrane unassisted. The water inside the cell leaves outside

Explanation:

Introduction of an invasive species to an ecosystem can have some harmful effects including predation of existing species, competition for resources, and overpopulation. These invasive species are introduced primarily by humans when humans travel from foreign countries, when cargo ships bring goods from foreign countries, or when exotic pets are lost or released. Once these invasive species to reproduce, they can take over an entire ecosystem.

which public policy strategy would best control the spread of invasive species?

Introduction of an invasive species to an ecosystem can have some harmful effects including predation

Answers

B is the most effective and feasible, and it prevents the initial introdution of the species

A patient in the hospital is undergoing testing. The patient's brain is sending electrical signals to motor neurons, but the muscles are not moving in response. What could be a likely cause for this? Explain your answer using complete sentences.

Answers

Answer:

Damage to interneurons.

Explanation:

The main cause of this situation is the damage occurs to the interneurons which is responsible for sending of instructions. The motor neurons can't receive the instruction from the central nervous system which results no movement of muscles. There must be damaged occur to interneurons because these neurons are responsible for sending instructions from central nervous system so if the information can be passed to the motor neurons so no movement occurs in the muscles.

What are two basic differences between DNA and RNA? RNA is usually single stranded, while DNA is usually double stranded. RNA contains uracil, while DNA contains thymine. RNA is usually double stranded, while DNA is usually single stranded. RNA contains thymine, while DNA contains uracil. RNA doesn’t contain cytosine, while DNA doesn’t contain adenine.

Answers

Answer:

Explanation

the two basic difference between RNA and DNA are

RNA is single stranded while DNA is double stranded

RNA contain uracil and DNA contain thymine

Answer: I just took the test

Explanation:

Here's the picture

What are two basic differences between DNA and RNA? RNA is usually single stranded, while DNA is usually

What happens to pressure and temperature as we go from the Earth's crust to the Earth's core?

Answers

Answer:Temperature and pressure progressively increase with increased proximity to Earth’s core. Recent studies indicate the core’s temperature may be close to 11,000 degrees Fahrenheit; that’s nearly 2,000 degrees warmer than previously thought and hotter than the surface of the Sun, according to a 2013 Forbes article.

Explanation:

To find new and alternative farming methods and practices, private companies often fund their own research and development teams.


False

True

Answers

I think the answer is false

:):):):):)

Answer:

FALSE ALL DAY LONG

Explanation:

What is the presence of a rhinarium in a primate an example of?

Answers

The presence of a rhinarium in a primate is an example of a primitive characteristic retained in only some primates.

The evolutionary classification of primates includes those with rhinariums, or prosimians like lorises and lemurs, and those without rhinariums, called Haplorhini (the Simians: monkeys, apes, and humans).

In many animals, the skin area with no hair that surrounds the nostrils' external apertures is known as the rhinarium.

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List and explain the function of hormones released by the hypothalamus

Answers

Many physiological processes in the body are controlled by the hypothalamus, a part of the brain. The production and release of hormones is one of its primary roles.

Which hormones does the hypothalamus produce?

The hormones that are produced in the hypothalamus include corticotrophin-releasing hormone, dopamine, growth hormone-releasing hormone, somatostatin, gonadotrophin-releasing hormone, and thyrotrophin-releasing hormone. Lactation and uterine contraction during childbirth are oxytocin's two primary physiological effects.

What hormones does the hypothalamus produce?

The hypothalamus secretes two different types of hormones: releasing hormones and inhibitory hormones. Gonadotrophin-releasing hormone, thyrotrophin-releasing hormone, somatotropin-releasing hormone, and adrenocorticotrophin-releasing hormone are a few examples of releasing hormones.

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20 characters is all you need brainly so here you go.

20 characters is all you need brainly so here you go.
20 characters is all you need brainly so here you go.

Answers

The SURFACE AREA is exactly what it sounds like: it’s the sum of the area of all of the surfaces on the cube. To find the area of a square is one side length^2, and to find the surface area of a cube is the area of one of the faces multiplied by 6. So the surface area for a 2 cm cube is 24 cm^2, a 1 cm cube is 6 cm^2, and a 0.5 cm cube is 1.5 cm^2.

The volume of a cube is one side length cubed. Thats it. So a cube with a side length of 2 cm has a volume of 8 cm^3, a 1 cm side length cube has a volume of 1 cm^3, and a 0.5 cm side length cube has a volume of 0.125 cm^3.

You can find the ratios by just dividing all of these (surface area/volume)
For the 2cm side length cube it would be 24/8 or 1:3
For the 1cm side length cube it would be 6:1
For the 0.5 cm side length cube it would be 1.5/0.125 or 12:1

How do plants obtain energy for life processes?

A. By using photosynthesis to make food
B. By maintaining homeostasis.
C. By eating other organisms.
D. By shedding flowers and leaves.

Answers

By using photosynthesis to make food.

Answer:

it's A

Explanation:

learned it in science yesterday

Which of the following would lead to an increase in species biodiversity in Florida?
A.releasing snails from South America into the wild. В.
letting wild boar from England invade people's farm land
C.
clearing land for a new entertainment theme park
D. protecting an endangered species in state or national forests

Answers

Answer: D

Explanation:

Ensuring that they don't lose their habitat and protecting them is key. Not adding in other invasive species or overexploitation. Conserving would cut the pollution (and if done globally it would cut back global warming). So if we protect the current species more will come or the current will evolve and be able to reproduce.

Protecting an endangered species in state or national forests  would lead to an increase in species biodiversity in Florida.

What are Endangered species?

A species that is threatened with extinction in the near future, either globally or within a certain political jurisdiction, is known as an endangered species.

Invasive species, habitat degradation, poaching, and other issues may put endangered animals in danger. Numerous species have their worldwide conservation status listed on the IUCN Red List, and a number of other organizations evaluate the condition of species in specific regions.

Many countries have laws that preserve species that depend on conservation, such as those that prohibit hunting, limit land development, or establish protected areas.

Therefore, Protecting an endangered species in state or national forests  would lead to an increase in species biodiversity in Florida.

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the movement of water across biological membranes can best be predicted by

Answers

The movement of water around biological membranes can best be predicted by 'osmosis'.

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration. This movement is driven by the difference in solute concentration on either side of the membrane. If a membrane is selectively permeable, it allows the passage of water, but not solutes.

Thus, osmosis is the predictor of water movement across biological membranes, which plays a critical role in the survival and function of cells.

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Describe the mechanism of glycolysis in detail

Answers

The process of Glycolysis is a catabolic process  in which two molecules glucose goes through a ten- step pathway and yield two molecules of pyruvate . It is a major part of carbohydrate metabolism .

Mechanism Of Glycolysis

The glycolysis is also known as EMP pathway and it is involved in both aerobic and anaerobic conditions .There are two phases in the mechanism of glycolysis in which 5 reactions takes place in each phase and the process of glycolysis takes place in cytosol

Preparatory phase refers to the  generation of two molecules of  glyceraldehyde 3-phosphate from one molecule of glucose which further goes into the payoff phase . In this phase two molecules of ATP are used and two regulatory enzymes were involved in this reaction .

Payoff phase refers to the further break down of two molecules of glyceraldehyde3-phosphate to two molecules of pyruvate . In this phase four molecules of ATP and two molecules of NADH are generated . In this phase only one regulatory enzyme is involved which is the breakdown of PEP to pyruvate  .

Both the phases of glycolysis takes place in the cytoplasm and there are  three enzymes that involved in regulating the glycolytic pathway .This process is also known as the catabolic process .

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Which of the following does NOT contribute to bacteria's large diversity Small size, Ability to reproduce quickly, Diverse habitats, None of the above

Answers

I believe it would the small size, that does NOT contribute to bacteria’s large diversity.

some mice have inherited a genetic mutation that causes them to have a band of white fur around the middle of their bodies. what is most likely true about an ancestor of these mice?

Answers

If some mice have inherited a genetic mutation that causes them to have a band of white fur around the middle of their bodies, it is most likely that an ancestor of these mice also had the same genetic mutation that caused the band of white fur.

Genetic mutations are changes in DNA sequence that can be inherited by offspring from their parents. If a mutation passed down from the parent to its offspring, then next generations will also have the same mutations. The white fur band presence suggests that the mutation for this trait has been inherited through multiple generations of mice.

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How does the term “selectively permeable” apply to a membrane?

Answers

Answer:

Explanation:Selectively permeable means a membrane allows the passage of some molecules or ions and inhibits the passage of others. The capacity to filter molecular transport in this manner is called selective permeability

Answer:

Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell.

For Example

water molecules

-TheUnknownScientist

The most common danger related to the destruction of CD4 T cells is

Answers

Answer:

AIDS

Explanation:

AIDS is the most common infectious disease causing lymphocytopenia, which arises from destruction of CD4+ T cells infected with HIV.

What is the difference between prokaryotes and eukaryotes cells

Answers

Answer:

There are several differences between the two, but the biggest distinction between them is that eukaryotic cells have a distinct nucleus containing the cell's genetic material, while prokaryotic cells don't have a nucleus and have free-floating genetic material instead.

Explanation:

hope this answered your question

Answer:

The main difference between prokaryotes and eukaryotes is that prokaryotes lack nucleus and some organelles whereas eukaryotes doesn't.

Examine the diagram of a cell.



Which organelle is marked with an X?

cytoplasm
mitochondrion
cell membrane
vacuole

Answers

The organelle marked with an X in the given options is the mitochondrion.

The correct answer would be mitochondrion.

Mitochondria are double-membraned organelles found in most eukaryotic cells. They play a crucial role in cellular respiration, which is the process of converting nutrients into usable energy in the form of adenosine triphosphate (ATP).

Mitochondria are often referred to as the "powerhouses" of the cell because they produce the majority of ATP required for cellular activities. They contain their own DNA and ribosomes, enabling them to partially control their own protein synthesis. The inner membrane of mitochondria is highly folded into structures called cristae, which increase the surface area available for energy production.

Mitochondria are involved in several metabolic processes, including the citric acid cycle and oxidative phosphorylation. During these processes, they utilize oxygen to break down carbohydrates, fats, and proteins, releasing energy that is used to generate ATP. This energy is essential for various cellular activities, such as muscle contraction, active transport, and synthesis of macromolecules.

Mitochondria also have other important functions in the cell. They participate in calcium signaling, regulate cell death through apoptosis, and are involved in the synthesis of certain molecules required for cellular function.

In summary, the organelle marked with an X is the mitochondrion. It is a vital organelle involved in cellular respiration and ATP production, often referred to as the "powerhouse" of the cell. Mitochondria have their own DNA, ribosomes, and a highly folded inner membrane, and they play critical roles in energy metabolism and other cellular processes

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With a greater understanding of the neurobiology of behavior and the role of physiology in behavioral expression, explain how this knowledge is important for understanding the variations of behavior in both humans and non-human animals. How is this important for understanding differences in behavioral expressions between species?

Answers

Neurobiology is scientifically studying how our nervous system and brain function, and its related structures such as the spine.

The field of neurobiology of behavior investigates how neurology influences behavior. The frontal lobe is linked to personality, judgment, problem-solving, abstract thought, attention, and other behaviors. Additionally, neurotransmitters are in charge of igniting, inhibiting, and modifying neurons that further influence human behavior. The study of physiology focuses on the origins of significant bodily functions, including hunger, behavioral potentials, innate drives, and many other situations that influence our behavior. The brain is where a living thing's genes and environment converge, or where nature and nurture interact. That is how the environment in our brain and our genes interact. Our environment has the potential to impact our genetically predetermined biochemistry and brain circuitry.

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Which of the following countries currently contributes the most lumber to the international market?
China
Canada
Costa Rica
The United States

Answers

Answer:

Canada

Explanation:

a thick black cloth that forms a barrier to weeds and holds down erosion is called ?

Answers

Answer:

Landscape fabric, weed barrier and weed barrier fabric are names for the same product. It is a black mesh type of plastic that is used extensively in landscaping to keep weeds out of your garden.

Answer:

landscape fabric

Explanation:

It is a black mesh type of plastic that is used extensively in landscaping to keep weeds out of your garden.

During alcoholic fermentation, when is NAD+ converted to NADH -- during the conversion of glucose to pyruvate (glycolysis) or during the conversion of pyruvate to alcohol?

Answers

Answer:

During the conversion of glucose to pyruvate glycolysis or during the conversion of pyruvate to alcohol

Explanation:

During the conversion of glucose to pyruvate, NAD+ is converted into NADH.

What is alcoholic fermentation?

Alcoholic fermentation is a biological process that converts sugars into cellular energy while emitting ethanol and carbon dioxide as byproducts.

The NADH + H+ from glycolysis would be recycled back to NAD+ during the fermentation process, allowing glycolysis to continue. NAD+ is reduced during glycolysis to form NADH + H+.

Thus, during this, when glucose is converted to pyruvate, NAD+ is being converted to NADH.

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Melanie is asked to list the complementary base pairings of a DNA sample in her lab. What is the MOST appropriate response she can give?

ST, RJ, CO, DI, SE
RFLP and PCR
chromosomes and genes
AT, CG, CG, AT, CG

Answers

Answer:

AT, CG, CG, AT, CG

Explanation:

Hi, the answer is the last one, AT, CG, CG, AT, CG.

When we read the question, it says base pairings of a DNA sample in her lab. The only base pairs in DNA is A, T, C, and G.

A is complementary to T, and C is complementary to G.

Therefore, you can eliminate the first three.

Hope this helps you!

Amoeba are freshwater protists. What would happen to the amoeba if it was removed from the freshwater and placed into a saltwater pool? EXPLAIN. (Hint: think about osmosis)

Answers

Answer:

Amoeba are single-celled organisms that live in freshwater environments. To regulate osmotic pressure, most freshwater amoebae have a contractile vacuole (CV) that expels excess water from the cell. Water is transferred across the amoeba’s cell membrane by osmosis. Without a CV, the cell would fill with excess water and eventually burst.

If an amoeba was removed from freshwater and placed into salt water, it would be exposed to a hypertonic environment. This means there would be a higher concentration of solutes outside the cell than inside. In this case, water would move out of the cell by osmosis to try to balance out the concentration of solutes on either side of the membrane.

Explanation:

When an amoeba is placed into a hypertonic environment, such as salt water, the concentration of solutes outside the cell is higher than inside. This causes water to move out of the cell through the process of osmosis, which leads to the cell shrinking and becoming dehydrated. Without a contractile vacuole to expel excess water, the amoeba would eventually die due to dehydration.

what percentage of the Earth's age has the atmosphere been at its current composition?

Answers

The current composition of the Earth's atmosphere has been around for a relatively short period of time compared to the age of the Earth. The Earth is estimated to be about 4.5 billion years old, and the current composition of the atmosphere is thought to have developed around 2.4 billion years ago.

What is the composition of the earth?

This means that the current composition of the Earth's atmosphere has been in place for about 53% of the Earth's history. However, it's important to note that the atmosphere has been changing and evolving throughout the Earth's history. The composition of the atmosphere has changed due to various processes such as volcanic eruptions, meteor impacts, and biogenic activity. Also, the atmosphere has been in a state of constant change due to natural processes and human activities. The current composition of the atmosphere is the result of these processes, and it is expected to change in the future as well.

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Which type of wet land is most likely found in warm forested areas.
A. Bogs
B. Swaps
C. Salt marshes
D. Inland marshes



And yes I’m dumb

Answers

Answer:

B.Swamps

Hope it helps :3

Answer: A

Explanation: Swamps and Marshes are found in warm climates. Bogs are more common in cold or even Arctic

Describe the relationship between the level of oestrogen and the endometrium from day 7to day 14

Answers

The dominant follicle transforms into the corpus luteum, which is a sort of temporary organ that predominantly secretes progesterone to prepare the uterine lining for implantation of a fertilized egg. This phase lasts for 14 days for most people.

What is the purpose of scientific argumentation?

Answers

A scientific argument is a method that researchers use to direct their work. In order to ultimately improve rational explanations and experimental designs, scientists point out flaws and limitations in other people's arguments. Evidence-based arguments is the term for this technique.

The aim of scientific reasoning is to assess the reliability and validity of methods and results. It would be appropriate to accept the scientific research if one could validate and demonstrate all of the points made. This part is structured around the four components of scientific argumentation

EvidenceReasoningStudent interactionCompeting claims

The method by which research, as a field, creates and greater integration, is through scientific debate. Other scientists assess and analyze the assertions, supporting evidence, and explanations of that evidence when scientists make arguments in favor of novel theories.

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