Which lists three units of an organ system in order from the simplest to the most complex? a. red blood cell → heart → tissue b. skeleton → bone → bone cell c. muscle cell → muscle tissue → stomach d. lung tissue → lung → circulatory system

As nicotine causes dopamine-releasing neurons to fire more action potentials, nicotine will therefore cause increased levels of dopamine in the synaptic cleft.

In the field of biology, a synaptic cleft can be described as a small region of space that can be found between two neurons. This space is present in between the dendrite region (the ending region) and the axon region (starting region) of two neurons.

As nicotine causes an increase in dopamine-releasing neurons, hence there will be an increased level of dopamine in the synaptic clefts because the neurons are firing action potentials for dopamine when nicotine is administered.

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

Nicotine is addictive because it causes dopamine-releasing neurons to fire more action potentials. nicotine will therefore cause:

- neuron damage

- more chemicals in the neurons

-  increased levels of dopamine in the synaptic cleft

-decreased levels of dopamine in the synaptic cleft

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Answer:

.02

Explanation:

When finding population density, divide the amount of people, animals or things in the region by the total square miles. 40/2000 is .02.

A population is the size of the group of individuals residing at a place. A population of 40 killer whales has a population density of 0.02.

Population density is the individual's concentration of a specific species at a particular geographical location. It allows the establishment of the ecosystem and health.

Given,

Number of individulas = 40

Size of the area = 2000

Density = Number of individuals ÷ Size of the area

= 40 ÷ 2000

= 0.02

Therefore, 0.02 is the population density of killer whales.

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Plants use carbon dioxide in the atmosphere during photosynthesis, herbivores eat the plants, and a carnivore eats an herbivore.

Carbondioxide gas move from atmosphere to the biosphere by absorbing by the plants in the process of photosynthesis. These plants are the food of herbivores so they eat it and carbon move from plant to herbivore. Then the carnivore feed on the herbivore.

So we can conclude that option A is the right answer.

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Lateral thinking: There are a dozen eggs in a carton. Twelve people each take a single egg, but there is one egg left in the carton. This is only possible if the last person to take the egg, took it along with the carton, leaving the egg in the carton only.

Lateral thinking is that approach of solving problems which is creative and involves out - of - box ideas. The solution might not have anything to do with logical reasoning. The solution might differ for different people i.e., there can be more than one solution.

For example, in this question, when twelve people took twelve eggs, one each, from the carton, there is no mathematical or logical solution to how one egg is left in the carton. But we can reach for a lateral approach that the last person took the carton along with the egg, keeping the egg inside the carton.

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Answer:

Explanation:

Cyanite, quartz and lucite are all part of the potassium mineral group

The study of chemicals and bonds is called chemistry.

The correct answer to the question is potassium.

According to the question, all these minerals belong to the potassium group.

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Answer:

Chloroplasts are the organelles present in plant cells in which Photosynthesis takes place.

Answer:

hello I did it.best of luck

In this case, a cross-sectional study design was employed to evaluate the association between vitamin and mineral deficiencies and headaches. This study design is commonly utilized to investigate the distribution and possible risk factors for a condition at a particular moment in time in a defined population.

Cross-sectional studies provide data on the frequency and distribution of risk factors, conditions, and diseases in a population, which is useful for identifying public health problems. Data were collected using a standardized questionnaire that inquired about patients' demographics, stress levels, and headache symptoms. Blood samples were collected and examined for vitamin and mineral concentrations in a laboratory. The mean age of the patients was 38 years, and 75 percent of them were female. More than 50% of the participants had mild to moderate stress levels, whereas 15% had severe stress levels. Approximately 40% of the participants had insufficient vitamin D levels, 30% had low iron levels, and 25% had low magnesium levels.

Deficiencies in magnesium and iron were found to be associated with headaches, whereas deficiencies in vitamin D were not found to be statistically significant. Stress was also found to be linked to headaches in this study. In conclusion, this cross-sectional study discovered that deficiencies in magnesium and iron and high levels of stress are linked to headaches.

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Answer:

The answer is C serving size.

Explanation:

Looking at the serving size may be the best idea. If you see the serving size for example: 9 pieces, and that's 190 calories. You may not even want to eat 9 pieces. That's a lot. So if you eat only 3 like me you only have 63 1/3 calories now.

The point is: there is no point looking at the calories if you aren't going to eat the serving size amount.

Hope this helps. :)

Answer:

I would say the answer is Gene, but maybe DNA.

Explanation:

A gene is a functional segment of DNA that provides the genetic information necessary to build a protein. Each particular gene provides the code necessary to construct a particular protein.

Answer: The sky appears black at night due to the absence of sufficient light reaching our eyes from distant stars and galaxies.

Explanation:

The sky appears black during the night when there is no significant source of illumination. This phenomenon is known as the "night sky paradox." The reason behind the blackness of the night sky is primarily attributed to the vastness of the universe and the limitations of human vision.

During the day, the sky appears blue because of a process called Rayleigh scattering. The Earth's atmosphere scatters shorter blue wavelengths of light more than longer wavelengths, creating the blue color we observe.

At night, when the sun is no longer visible, our line of sight extends deeper into space. We can observe countless stars in various directions, implying that there should be light coming from all those stars. However, the night sky still appears dark overall.

The reason for this darkness is that the universe is not infinitely old. It has a finite age. Consequently, the light from the most distant stars and galaxies has not had enough time to reach us yet. As a result, the vast majority of the universe is beyond our observational reach, and we perceive the night sky as predominantly black.

In addition, there are other factors that contribute to the blackness of the night sky, such as interstellar dust, which absorbs and scatters light, and the absorption of light by gases and particles in our atmosphere.

Therefore, the sky appears black at night because the light from distant stars and galaxies has not reached us, and the absence of significant illumination sources contributes to the overall darkness.

Answer:

1. Renewable

2. wood

3. Sun ... Wind

4. Water

5. Electricity

Explanation:

In the image, the form of DNA sequence that is highlighted therein is C. SNP profiling.

SNP profiling is a way of categorizing the genetic variations of a single nucleotide. In the diagram, we can see a DNA strand and the nucleotides that make it up.

Also, we can see how these nucleotides are categorized by their genetic variations. So, the term that represents the image in the figure is SNP profiling.

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Answer:

One of the reflexes that would help an infant breastfeed is the rooting reflex. When an infant's cheek is touched or stroked, the infant will turn their head towards that side and open their mouth in preparation for feeding. This reflex helps the infant locate the nipple and initiate breastfeeding.

Explanation:

The molecule which is regenerated in the regeneration phase of the Calvin cycle is Ribulose-1,5-bisphosphate. Without the regeneration of this molecule, the Calvin cycle would stop.

The second stage of photosynthesis is known as the Calvin cycle, or the light-independent reactions. The transformation of Carbon dioxide to carbohydrates is called Calvin Cycle or C3 cycle and is named after Melvin Calvin who found it. The plants that go through the Calvin cycle for carbon fixation are called C3 plants.

The Calvin cycle is a progression of reactions that happens in the stoma of chloroplasts in a plant cell. The chemical reactions convert carbon dioxide into glucose with the assistance of ATP and NADPH.

These reactions occur in the stoma, the inward space or fluid-filled region of a chloroplast. The Calvin cycle uses the chemical energy of ATP and reduces the power of NADPH from the light-reliant reactions to produce three-carbon sugars.

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Answer:

Twenty-two

That's how many human chromosomes are common to both males and females

Answer:

Green algae grow at the edges of a glacial lake in Wales. Hundreds of millions of years ago, similar algae adapted to survive temporarily outside of the water may have kicked off the evolution of green land plants.

Algae didn't always hang out in the seas, but one fateful day, about a billion years ago, a simple bacterial cell swallowed a cyanobacteria cell, writes Ed Yong at The Atlantic. This chance occurrence allowed the bacteria to produce energy from the sun, a process known as photosynthesis.

Explanation:

An immunity used by human body is: (2) humoral immunity antibody mediated.

Immunity is the ability of the body to fight against the foreign invaders and the disease caused by them. This immunity can be active or passive. Active immunity is the one that the body develops by itself. Passive immunity is the one that is introduced into the body by injecting antibodies.

Humoral immunity is the response mediated by the antibodies present in the body for specific pathogens. It is driven by the B cells. Antibodies are the Y-shaped structures that are produced by the B cells in response to the invasion of certain foreign invaders also called the antigens.

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Answer:

well for me

Explanation:

I think it's the second one

Answer:

carbon,water, sunlight, sugar, then oxygen is the right one

Answer:

c. parasite

Explanation:

the barnacle benefits from the host while the host is harmed from the barnacle

Answer:

c the parasite <3

Explanation:

Answer: D. Kingdom Animal

Explanation: Among other animal characteristics, humans can move on their own, so they are placed in the animal kingdom. Further, humans belong to the animal phylum known as chordates, because we have a backbone. The human animal has hair and milk glands, so we are placed in the class of mammals.

Answer:

D. Kingdom Animalia

Explanation:

Human beings belong to kingdom Animalia. So, option (D) is correct.

The organelle that has an acidic pH and breaks down macromolecules into monomers is the lysosome.

Lysosomal enzymes, an assemblage of molecular assassins capable of cleaving proteins, nucleic acids, carbohydrates, and lipids into their basic building blocks, can only function properly in an acidic environment.

To maintain this low pH, lysosomes are equipped with proton pumps in the membrane that pump out hydrogen ions.

The disintegration of large molecules by lysosomes is not just another cellular process, it is a vital one that underpins a range of functions such as cellular component recycling, digestion of ingested material, and disposal of unwanted or damaged molecules.

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Answer:

I'm pretty sure that the answer would be C but I'm not completely positive :)

Answer: is c

Explanation:

Answer:

egg cell, reproductive cell, and sperm cell

Answer:

flame was extinguished after a few seconds because the jar keeps oxygen from the outside from getting in.

Explanation:

Running out of oxygen makes the flame go out.

Explanation:

Los fósiles se forman a través de varios tipos de fosilización: mineralización, carbonización, momificación, y fundición y moldes. El proceso más común es el de mineralización, en el que los minerales de aguas subterráneas se filtran en las partes duras del organismo, como huesos y conchas, y los petrifican o los convierten en piedra.