How is a food chain different from a food web?

Group of answer choices

Food webs contain many different, linked food chains.

Food webs contain only producers, not consumers.

Food webs do not include decomposers.

Food webs exist in aquatic environments, food chains exist in terrestrial environments.

Answer:

Neurons, as with other excitable cells in the body, have two major physiological properties: irritability and conductivity. A neuron has a positive charge on the outer surface of the cell membrane due in part to the action of an active transport system called the sodium potassium pump. This system moves sodium (Na+) out of the cell and potassium (K+) into the cell. The inside of the cell membrane is negative, not only due to the active transport system but also because of intracellular proteins, which remain negative due to the intracellular pH and keep the inside of the cell membrane negative.

Explanation:

Neurons are cells with the capacity to transmit information between one another and also with other tissues in the body. This information is transmitted thanks to the release of substances called neurotransmitters, and this transmission is possible due to the electrical properties of the neurons.

For the neurons (and other excitable cells, such as cardiac muscle cells) to be capable of conducting the changes in their membranes' voltages, they need to have a resting membrane potential, which consists of a specific voltage that is given because of the electrical nature of both the inside and the outside of the cell. The inside of the cell is negatively charged, while the outside is positively charged - this is what generates the resting membrane potential. When the membrane voltage changes because the inside of the cell is becoming less negative, the neuron is being excited and - if this excitation reaches a threshold - an action potential will be fired. But how does the voltage changes? This happens because the distribution of ions in the intracellular and extracellular fluids is very dissimilar and when the sodium channels in the cell membrane are opened (because of an external stimulus), sodium enters the cell rapidly to balance out the difference in this ion concentration. The sudden influx of this positively-charged ion is what makes the inside of the neuron become less negative. This event is called depolarization of the membrane.

Explanation:

Facilitated diffusion is the term used when transport proteins are required to move particles across the membrane.

Hope it will help you

Answer:

Option b. is correct

Explanation:

If hydronium ion concentration [tex]H_3O^+[/tex] is given then pH is given by [tex]-log[H_3O^+][/tex]

The hydronium ion refers to the hydrogen ion in aqueous solution.

A Tomato has A Proton Concentration Of 0.00006 M

Here, 0.00006 is equal to 6 × [tex]10^{-5}[/tex]

So,

pH is given by - log [6 × [tex]10^{-5}[/tex]]

Option b. is correct

The pH of the tomato which has a proton concentration of 0.00006 M is given by –Log (6×10¯⁵)

The correct answer to the question is Option B. –Log (6×10¯⁵)

From the question given above, the following data were obtained:

proton concentration [H⁺] = 0.00006 M = 6×10¯⁵ M

The pH of tomato can be obtained as follow:

pH = –Log [H⁺]

Thus, the correct answer to the question is Option B. –Log (6×10¯⁵)

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Answer:

d. Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matric

Explanation:

There are four primary types of tissues in living organisms. Epithelial and connective tissues are two of those four types of tissues. Epithelial tissues are made up of closely packed cells that serve functions such as absorption, secretion, protection, etc while connective tissues are composed of cells, ground substance, and protein fibers that serve supportive functions.

The cells of epithelial tissues are so closely packed to one another that there is hardly space in their extracellular matrix for materials. However, on the contrary, connective tissues are made up of cells that have room for large quantities of extracellular matrix. Hence, the cells that make up connective tissues are dispersed into matrix.

Answer:

It allows the heart muscle to become more strong and stronger able to pump blood across the body, just as exercise strengthens other muscles in the body. This means that with each beat, the heart pumps out more blood, allowing it to beat easier to keep the blood pressure in check.

Answer:

A virus

DNA is not acell

Explanation:

Answer:

B. Ask a question, make a hypothesis, test the hypothesis, analyze

results, and draw conclusions.

Explanation:

Answer:

B.Ask a question ,make a hypothesis, test the hypothesis, analyze

Answer:

the pancreas

Explanation:

Answer:

The Sun, (Sunlight)

Explanation:

"Life is an ecosystem which relies on competition for limited resources". This statement is true.

Answer:

I'm not sure but I think its storage

Answer:

A..............

Explanation:

storage.....

Answer: No

Explanation: brainlest please

Answer:

Blood vessels are the channels or conduits through which blood is distributed to body tissues. The vessels make up two closed systems of tubes that begin and end at the heart. One system, the pulmonary vessels, transports blood from the right ventricle to the lungs and back to the left atrium.

Explanation:

Answer:technically it is 460 but if u round it is 500

Explanation:

Answer:

Some of these sentences both refer to the same term.

1. The epithelial membrane that lines the closed ventral cavities of the body.  - 5. Makes up the pleura and pericardium. This is called the serous membrane.

2. The epithelial membrane that lines body cavities open to the exterior membrane . - 4. Found lining the digestive and respiratory tracts.  These statements refer to the mucous membrane.

3. Consists of keratinized stratified squamous epithelium.  - cutaneous membrane.

6. Lines blood vessels and the heart. - endothelium.

Explanation:

All of these membranes are formed by epithelial tissue - one of the four basic tissues found in the human body, with important tasks that many times give the organs they're part of their main function.

The epithelium can vary in shape and size in order to adapt to the necessities of the organ. If the organ needs protection from abrasions, like the skin or the stomach, this tissue will have many layers and be called "stratified epithelium". On the other hand, an organ with the function to exchange substances, like the blood vessels or the alveoli, will have only one layer of epithelium, to ease the diffusion of gases and other molecules.

The other three basic tissues are: connective tissue, muscle tissue, and nervous tissue.

Answer:

It depends on the animal(s)

Explanation:

If its a larger animal such as a lion it would have to be put into a large cage and put into a truck, if its a smaller animal such as a dog you can hold it or also put it in a smaller cage...

Answer:

correct me if I'm wrong but i believe it is (A)

Answer:

B, or the second answer

In lakes and ponds, a layer of ice forms on top of the liquid water, creating an insulating barrier that protects the animals and plant life in the pond below from freezing.

Answer:

Sedimentary rocks are made of sand, gravel, mud and other materials. They go through a 5 step process to be made.

Explanation:

1) first weathering breaks down material that will be used to form the rock.

2) next erosion picks up the sediment via wind, water, or glacier

3) the sediment is then transported via wind, water, or glacier

4) Then deposition occurs. (depositing the sediment)

5) Lithification (turning the sediment to rock)

Answer:

Explanation:

Each tRNA can only carry one amino acid. The tRNA CODES for ONE amino acid through its 3 base codons. The 3 codons result in a possibility of 64 combinations and since 3 of those 64 code for STOP there are a potential 61 amino acids coded for by a tRNA, but each tRNA only carries one of those potential amino acids. read more

Answer:

I think antibiotics

Explanation:

Hope it helps :)

Brainliest pls? Have a good day/night

Answer:

C, Bottleneck

Explanation:

A bottleneck effect is defined as when "A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events."

The forest fire is the enviornmental event in this situation, and the population was greatly reduced.

Answer:

the stomach is located in the trunk region and is superior to the large intestine.

Explanation:

Answer:

true

Explanation:

dietary fiber build muscle and flexibility

Dietary fiber is one of the components of a nutrient and balanced diet. Dietary fiber in the diet can build muscle and flexibility. Thus, the statement is true.

Dietary fiber along with the functional fibers makes the total fiber that makes part of the diet and is considered to be nutritious. They are homopolysaccharides that are made of various similar monomers linked concurrently by the glycosidic linkage.

Dietary fiber is composed of various units of cellulose linked chemically by the beta (1 - 4) glycosidic linkage. They have been known as roughage which are plant parts that are undigestable. Though they cannot be absorbed, but they ensure a smooth digestive and excretory process.

The presence of dietary fiber in the diet increases flexibility and muscle mass by decreasing body fat and is found in beans, broccoli, avocados, berries, apples, etc. It eliminates fats and other wastes from the body by promoting regular bowel movements.

Therefore, the statement is true.

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#SPJ2

Answer:

2

Explanation:

Answer:

1

Explanation:

yes

Answer:

Ecosystems have carrying capacities, which are limits to the numbers of organisms and populations they can support. These limits result from such factors as the availability of living and nonliving resources and from such challenges such as predation, competition, and disease. If this helps you could I possibly have brainliest?

Explanation:

The impact of climate and lack of resources on the carrying capacity of an ecosystem is discussed below :

The carrying capacity of an ecosystem can be described as the maximum amount of organisms which can be naturally catered for giving the resources available in an environment.

Climate has an important role to play in the type of resource available or resources which can thrive in an environment. Similarly harsh climate conditions aren't favorable for survival, hence resulting in low carrying capacity of such ecosystem.

Also, organisms, animals depend on the available resources available in an environment for survival, when the available resources aren't enough to cater for a large population, the carrying capacity of the ecosystem is impeded.

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Answer:

Fiber

Explanation:

All the other choices are plant related. As far as I know, ropes and towels do not have stems or leaves.