what are the steps for the respiratory system?

Answers

Answer 1

Answer:

Other components of the respiratory system conduct air to the lungs, such as the trachea (windpipe) which branches into smaller structures called bronchi. The process of breathing (respiration) is divided into two distinct phases, inspiration (inhalation) and expiration (exhalation).

Answer 2

Answer:

The primary organs of the respiratory system are the lungs, which function to take in oxygen and expel carbon dioxide as we breathe.The gas exchange process is performed by the lungs and respiratory system. Air, a mix of  oxygen and other gases, is inhaled.In the throat, the trachea, or windpipe, filters the air. The trachea branches into two bronchi, tubes that lead to the lungs.Once in the lungs, oxygen is moved into the bloodstream. Blood carries the oxygen through the body to where it is needed.Red blood cells collect carbon dioxide from the body’s cells and transports it back to the lungs.An exchange of oxygen and carbon dioxide takes place in the alveoli, small structures within the lungs. The carbon dioxide, a waste gas, is exhaled and the cycle begins again with the next breath.The diaphragm is a dome-shaped muscle below the lungs that controls breathing. The diaphragm flattens out and pulls forward, drawing air into the lungs for inhalation. During exhalation the diaphragm expands to force air out of the lungs. Adults normally take 12 to 20 breaths per minute. Strenuous exercise drives the breath rate up to an average of 45 breaths per minute.


Related Questions

A researcher finds that males in two populations of bowerbirds make different types of structures to attract female birds. The males of population 1 build hut-shaped structures and decorate them with colorful objects. The males of population 2 loosely interweave sticks around a central pole and decorate it with dull-colored objects. Female bowerbirds prefer structures made by males of their own population.

Answers

Answer:

.....

Explanation:

....

How do limiting factors most affect population size? stop population growth restrict population growth increase population growth decrease population growth

Answers

Answer:

restrict population growth

Explanation:

Limiting factors of a population are those factors that constrict the growth of the population. They often act as a check on population growth.

Some of these limiting factors are:

Food Water Habitat of organisms

From the giving choices, limiting factors have been clearly shown to inhibit population growth.

The lack of some of these factors checks the population, thereby impeding its growth.  

Answer:

How do limiting factors most affect population size?

restrict population growth

Explanation:

correct on edge unit test

What differentiates passive transport from active transport?

Group of answer choices

Molecules move down a concentration gradient during passive transport.

Passive transport involves molecules moving across the cell membrane.

ATP is needed for passive transport to occur.

Proteins have a role in passive transport.

Answers

Answer:

The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport. Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration

Explanation:

Which molecule is most common in the human body?
O A. H2
B. N2
C. H20
D. CO2

Answers

H20 is the most common molecule in the human body.

Guys help!!!!!!!!!! Pleaseeee it’s urgent

Answers

Answer:

The answer is b

Explanation:

What groups of organisms are most in danger of extinction?

A. Those with small population
B. Those that migrate or need special habitats
C. Those with large populations that breed quickly
D. Both a and b

Answers

Explanation:

D.Both a and B

As organisms with small population and those who migrate and need special habitat are most in danger of extinction.

The group of organisms that are in danger of extinction is those that have small populations and those that migrate or need special habits. So the correct option is D.

What is the extinction of species?

In biology, extinction refers to the extinction or death of a species. Extinction happens when a species' numbers are reduced due to evolutionary changes in its members, such as genetic inbreeding, poor reproduction, and population decline, or due to environmental factors like habitat fragmentation, climate change, natural disasters, and overexploitation of the species for human use.

The majority of species that have ever existed on Earth have gone extinct, but the fossil record indicates five very significant extinctions, known as mass extinction events, each of which resulted in the extinction of enormous numbers of species. The bulk of extinctions, which happen continuously and are described as background extinctions, are separated from these glaring decreases in the variety by the term "mass extinction."

Therefore, the correct option is D.

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Which human activity has the most negative effect on the stability of an ocean environment

Answers

Answer:

putting motor oil or leakage of oil in oil carrying ships

Which two of the following correctly describe what a gene is?

A packet of genetic information that can be passed down from one generation to the next
A DNA molecule
The entire collection of genetic information in a given species
A section of DNA that provides instructions for building a specific protein
I'm not sure

Answers

Answer:

A section of DNA that provides instructions for building a specific protein and A packet of genetic information that can be passed down from one generation to the next

Explanation:

A DNA molecule is not a gene, it is a nucleotide. The entire collection of genetic information in a given species results isn't a gene although many genes comprise what is the genome.  Given that those two answers are not what genes are, the other two options are correct.

Mendeleev developed his table when he placed the elements
in order by increasing atomic number.
TRUE
FALSE

Answers

The answer to this is true

the answer is True

okay

Make list of farm tool used in:

Land preparation
Cultivation
Plant propagation
Harvesting

Answers

Answer:

Land preparation:

This has to do with preparing the land in preparation for planting.

Farm tools used in land preparation include scrapers, ditchers, ploughs, levelers.

Cultivation:

This has to do with loosening the soil for farm use.

Farm tools used in Cultivation include: spade, shovel, rake, etc.

Plant propagation:

This is the act of growing new seeds, using different sources.

Examples of farm tools used in this operation include: propagation knife, hand pruner, sharpening stone, etc

Harvesting:

This is the process of collecting or gathering crops which were planted and have reached age of maturity.

Examples of farm tools used in this operation are hand sickle, darat, gandasa, etc.

The list of farm tools used for various uses include the following:

Land preparation-This involves preparing the land for planting. Examples of farm tools used include tractor, harrows, plough, levelers etc

Cultivation- This involves the process of preparing the soil for planting and crop cultivation. Examples of farm tools used in cultivation include spade, shovel, rake, etc.

Plant propagation- This involves different techniques which are used to grow crops using stems or leaves of plants. Examples of farm tools used include propagation knife, hand pruner, sharpening stone, etc

Harvesting- This involves the process of gathering planted crops which have reached maturity and ready for consumption and other uses. Examples of farm tools used include hand sickle, darat, gandasa, etc.

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When a biological vector is used, which process is used to ensure there are large amounts of DNA?

Answers

Answer:

Cloning

Explanation:

It makes the most sence

Answer:

cloning

Explanation:

i looked it up

have a great day!

NASA has discovered a new planet in a distant solar system. On this new planet, they have found a mysterious green slime. The green slime only grows at certain temperatures and under certain moisture levels. Scientists found that if they put the green slime in a freezer, it would shrink itself to maintain an internal temperature of 75°. They also found that the green slime has specialized pumps to pump out water if it gets too wet. As of yet, none of the green slime samples have reproduced, but they do appear to be growing very slowly. When looking at the green slime under the microscope, scientists can see smaller structures filled with green slime and tiny pumps. What are some reasons the green slime may be considered a living organism? What are some reasons the green slime may not be considered a living organism? Do you think the green slime is alive? Why or why not? *

Answers

Answer: The following assumptions can be made for the green slime.

Explanation:

1. The green slime has many characteristics, which indicates that these are adaptations which were used by the slime to survive. It uses pump to expel out excess water, and in freezing it can shrink itself to maintain its temperature. Thus these characteristics indicates that the green slime is living.

2.  The green slime did not reproduced. This indicates that the slime was not living.  

3. The slime was living because it had characteristics which enable it to survive like other living organisms.

What evidence does not support the evolution of chloroplasts and mitochondria from prokaryotic cells?

A. O Fossilized remains of archaebacteria
B. O Double membranes of the organelles
c. Similar methods of reproduction
D. O Presence of circular DNA


Answers

Answer:a

Explanation:

what would happen if all countries in the world depended only on wind power?

Answers

Answer:

A country getting all its electricity from a combination of wind, solar ... Not only does that make vitamin D a commodity, it also means solar ... Elon Musk became a sensation in South Australia last year after he decided Tesla would build the world's biggest lithium-ion battery ... This didn't happen overnight.

What describes G and why they face the watery inside and outside of the cell

Answers

Answer:

Because they are hydrophilic

Explanation:

The cell membrane is made up of a phospholipid bilayer. The phospholipid bilayer is made up of an arrangement of phosphate heads, which are (attracted to water) hydrophilic, and fatty acid tails, which are hydrophobic. (repelled by water).

Because they are attracted to water, the phosphate heads face the outside of the cell, where the water is

today's midterms and I just want to say good luck to you all. (we're doomed)

Answers

Answer:

lol, good luck dude ur gonna need it.


Diffusion is the movement of molecules from an area of high concentration of molecules to an area with a ____ concentration.

A. Equal
B. Higher
C. Lower
D. None of the above

Answers

Answer:

lower

Explanation:

Diffusion is the movement of molecules from an area of high concentration to an area of lower concentration. So, the correct option is C.

What is diffusion?

Diffusion is a type of passive transport, this means that it does not require any kind of external energy for movement of molecules. The difference in concentration in two areas gives rise to a concentration gradient. Where, in one area there is high concentration of molecules and in another, there is low concentration of molecules.

If the molecules move from an area of higher concentration to an area of lower concentration, they are moving along the direction of concentration gradient. This is why no additional energy is required. Diffusion is a type of passive transport where molecules move along a concentration gradient.

This is in contrast to active transport where molecules move against the concentration gradient and therefore require external energy.

Therefore the correct option is C.

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You're eating a bowl of
fruit but you're starting to
feel full.

Answers

Answer:because it has low energy density an lots of fiber it helps you feel full  longer

Explanation: fruit recommended

Role of Lipids and Carbohydrates - Type Lipid or Carbohydrate behind each question. 16. Provide long term energy storage. 17. Provide insulation and protection. 18. Short term energy supply 19. Composes cellulose in trees and plants. 20. Main component of cell membranes 21. Provide a waterproof coating on leaves and feathers. 22. Composes chitin exoskeleton of insects. 23. Act as chemical messengers in the body.

Answers

Answer:

16. Carbohydrates  

17. Lipids

18. Carbohydrates

19. Carbohydrates

20. Lipids

21. Lipids

22. Carbohydrates

23. Lipids

Explanation:

Carbohydrates are organic molecules composed of carbon, hydrogen and oxygen. Carbohydrates can be classified into three types: monosaccharides (e.g. glucose), disaccharides (e.g., lactose), and polysaccharides (e.g., starch). Cellulose is a carbohydrate where many glucose rings chain together, while chitin is a polysaccharide consisting of chains of modified glucose molecules.

Lipids represent a diverse group of organic molecules that include, among others, fats, waxes, oils, hormones, etc. Lipids play a role by insulating (and protecting) the body. For example, there is a layer of fats beneath the skin which enables to maintain body temperature relatively constant. In animals, lipids constitute about 50% of the mass of cell membranes. These membrane lipids are mainly phospholipids, glycolipids and cholesterol. There are hormones that derive from lipids such as steroid hormones, which derive from cholesterol. Some examples of steroid hormones are testosterone, estrogen and cortisol.

how has limiting factors for the ecosystem impacted pythons in the everglades

Answers

Answer:

Explanation:

Non-native Burmese pythons have established a breeding population in South Florida and are one of the most concerning invasive species in Everglades National Park. Pythons compete with native wildlife for food, which includes mammals, birds, and other reptiles. Severe mammal declines in Everglades National Park have been linked to Burmese pythons.

The most severe declines in native species have occurred in the remote southernmost regions of Everglades National Park, where pythons have been established the longest. In a 2012 study, populations of raccoons had dropped 99.3 percent, opossums 98.9 percent, and bobcats 87.5 percent since 1997. Marsh rabbits, cottontail rabbits, and foxes effectively disappeared.

The mammals that have declined most significantly have been regularly found in the stomachs of Burmese Pythons removed from Everglades National Park and elsewhere in Florida. Raccoons and opossums often forage for food near the water’s edge, which is a habitat frequented by pythons in search of prey.

Which characteristic of life is the car missing that leads someone to conclude it is not alive? Please answer in complete sentences

Answers

Answer:

Explanation:

a car does not have the ability to reproduce, or maintain homeostasis. Unlike all living things

A car does not follow the rules dictated by the cell theory and so forth. a) A car cannot reproduce. b) A car does not have any cells. c) A car does not maintain homeostasis. d) A car lacks genetic material.

__ used to help substances enter or exit the cell membrane

Answers

Answer:

Transport Protein

Explanation:

This is used to help substances enter or exit the cell membrane.

A certain chocolate bar contains 6 mg of caffeine in a 1.5 oz. Serving. The king-size version of the chocolate bar is 85 grams. How much caffeine, in mg, would you consume if you eat the entire king-size bar?Fill in the answer in the blank provided. Mg of caffeine

Answers

Answer:

The amount of caffeine that would be consumed if one eats the entire king-size bar will be 11.99 mg

Explanation:

This question can be reframed in the manner below for better understanding.

If 1.5 oz or ounce of a chocolate bar contains 6 mg of caffeine, how many milligrams (mg) of caffeine is contained in 85 grams of the same chocolate bar.

Firstly, the ounce should be converted to grams

If 1 ounce = 28.35g

1.5 ounce = ?

= 1.5 × 28.35/1

=42.53g

Hence, 42.53g of the chocolate bar contains 6 mg of caffeine

85g of the chocolate will contain

42.53g = 6mg

85g = X

where X is the amount of caffeine that will be consumed in mg

X = 85 × 6/42.53

X = 11.99 mg

The amount of caffeine that would be consumed if one eats the entire king-size bar will be 11.99 mg

Rita planted hydrangeas in her and her grandmother’s home. The same batch of seeds produced blue flowers in her home and pink flowers in her grandmother’s home. This made her conclude that the soil in her grandmother’s garden is alkaline while that in her garden is acidic. This is an example of which type of variation? Explain.

Answers

Answer:

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This flower must have grown in neutral soil, with little aluminum.

In some varieties of bigleaf hydrangeas (Hydrangea macrophylla), soil pH determines whether the plant will produce blue or pink flowers. Blooms appear bluest when grown in acidic soil with a pH in the 5.0 to 5.5 range. The same cultivar may sport pink blossoms in soil with a more neutral pH, such as 6.5 to 7.0. Florists control flower color by potting soil mixture

A medical-alert bracelet that informs first responders of a fall or an emergency and this made her conclude that the soil in her grandmother’s garden is alkaline while that in her garden is acidic.

What technology helps her to stay in her home safely?

The technology that can help her stay in her home instead of moving to a nursing home is a medical-alert bracelet that informs first responders of a fall or an emergency.

The medical alert bracelet is vital as it will help during emergencies as first responders will be made aware of the grandmother's situation and can then respond on time.The same batch of seeds produced blue flowers in her home and pink flowers in her grandmother’s home.

This is the best option as other options doesn't have to do with emergencies. Rita planted hydrangeas in her and her grandmother’s home. The same batch of seeds produced blue flowers in her home and pink flowers in her grandmother’s home.

Therefore, A medical-alert bracelet that informs first responders of a fall or an emergency and this made her conclude that the soil in her grandmother’s garden is alkaline while that in her garden is acidic.

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Which of the following structures is at the same level organization as the mitochondrion in a plant cell

Answers

Answer:

Any other cell organelles would be at the same level of organization as a mitochondria.

I WILL GIVE BRAINLIEST PLS HELP

Which type of RNA is shown in orange, carrying an amino acid?

A. Messenger RNA
B. Transfer RNA
C. Ribosomal RNA

Answers

Answer: B. Transfer RNA

Explanation:

Place a checkmark next to each cellular component necessary to build a bacterial cell:
plasma membrane
cell wall
DNA
nucleus
mitochondria
chloroplast
Golgi apparatus
rouch endoplasmic reticulum
smooth endoplasmic reticulum
flagella

Answers

Answer: Cell wall, DNA,  plasma membrane

Explanation:

Please mark as brainliest if your want!

The cellular component necessary to build a bacterial cell include:

Cell membraneDNACell wallRibosomesCytoplasmFlagella

What is Bacteria?

These are micro-organisms which can't be seen with the eyes but with the use of instruments such as microscope.

They lack a nucleus and their DNA is usually found in the nucleoid region of the cell.

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This food web represents a community in a rain forest.

If the beetles disappeared from this community, which changes would be
likely to occur? Select the three correct answers.

A. An increase in the number of strangler figs

B. A decrease in the population of sloths

C. A decrease in the number of boa constrictors

D. An increase in the population of fruit bats

E. A decrease in the population of poison dart frogs

Answers

Answer:

A, C, E

Explanation:

If the beetles disappeared from this community, changes likely to occur include

an increase in the number of strangler figs, an increase in the population of fruit bats and decrease in the population of poison dart frogs

The beetles are insects which eat up strangler figs and a decrease mean an increase in its number.

The population of fruit bats will increase as they will have more strangler figs available for food.

Poison dart frogs will decrease because they feed primarily on beetles in the ecosystem.

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Based on the description of DNA, given in the Do Now, what could be the nucleotide composition of a DNA double helix? 90 points 20% adenine, 20% guanine, 30% thymine, 30% cytosine 60% adenine, 20% thymine, 10% guanine, 10% cytosine 20% adenine, 20% thymine, 30% guanine, 30% cytosine 60% adenine, 20% guanine, 10% thymine, 10% cytosine

Answers

Answer:

20% adenine, 20% thymine, 30% guanine, 30% cytosine

Explanation:

Edwin Chargaff stated in his rule that, in a DNA molecule, the amount of purine bases (Adenine and Guanine) should equate the amount of pyrimidine bases (Cytosine and Thymine). Mathematically, this means that;

A + G + C + T = 100%

Where;

% Adenine base = % Thymine base

% Guanine base = % Cytosine base

Hence, according to this question, the DNA molecule described will contain

20% adenine = 20% thymine,

30% guanine = 30% cytosine

20% A + 20% T + 30% G + 30% C = 100%

Which of the following is true about the structure of water?
1. It is held together by an ionic bond
2. It is nonpolar
3. It is polar
4. It has one positive hydrogen attached to one negative oxygen

Answers

Answer:

3.) It is polar

Explanation:

Water is polar covalently bonded within the molecule. This unequal sharing of the electrons results in a slightly positive and a slightly negative side of the molecule. Other molecules, such as Ethane, are nonpolar, having neither a positive nor a negative side.

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