20 points PLEASE HELP

edge 2021

Which is the correct pathway of air to the lungs?

mouth/nose, pharynx , larynx , trachea ,. bronchial tubes , lungs

mouth/nose , larynx ,. pharynx , trachea , bronchial tubes , lungs

mouth /nose , trachea , pharynx , larynx ,. bronchioles ,. lungs

mouth/nose ,. pharynx ,trachea , larynx , bronchioles , lungs

Answer: D = 0.56 g/ml

Explanation:

We can use the density equation for this one.

D = m / v

We are given Mass (m) and Volume (v).

D = 4g / 7.1 ml

D = 0.56 g/ml

If during DNA replication prior to meiosis, a frameshift mutation occurs, this mutation will be inherited.

Therefore, the correct option is:  Yes, because the error happened in a gamete; option B.

Mutations are changes that occur in the sequence of nucleotides in the DNA of living organisms.

Mutations that occur that affect the structure of a protein encoded by a gene usually have damaging effects on the living organism.

There are three types of mutations that occur in DNA, and they are:

Frameshift mutations occur when a shift occurs in the nucleotide of the reading frame of a DNA molecule.

Mutations that occur during meiosis may likely be inherited.

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Answer:

B, yes, because the error happened in a gamete

Explanation:

The statement "Only women make follicle-stimulating hormone (FSH); only men make luteinizing hormone (LH)" is false.

Both men and women produce FSH and LH. These hormones play essential roles in the reproductive system of both genders. In women, FSH stimulates the growth of ovarian follicles, while LH triggers ovulation. In men, FSH promotes sperm production, and LH stimulates testosterone production.

In women, LH and FSH work together to regulate the menstrual cycle and ovulation. FSH stimulates the growth and development of follicles in the ovaries, which contain the eggs. As the follicles mature, they produce increasing amounts of estrogen, which signals the release of LH. This surge of LH triggers ovulation, the release of the egg from the follicle. After ovulation, the remaining follicle turns into the corpus luteum, which produces progesterone to prepare the uterus for a possible pregnancy.

In men, LH and FSH are involved in the production of sperm. FSH stimulates the growth and development of the seminiferous tubules in the testes, where sperm are produced. LH stimulates the Leydig cells in the testes to produce testosterone, which is necessary for sperm production and other male sexual characteristics.

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a. The overall colonization rate of the entire metapopulation. The colonization rate of the entire metapopulation is the answer.

The metapopulation equation: dP/dt=[cP(1−P)]−ePHere, cP(1-P) is the birth term, which is the product of the colonization rate and the number of individuals in patches not occupied yet. eP is the death term, which is the product of the extinction rate and the number of individuals in patches occupied but about to go extinct. Thus, the equation gives us the number of patches that are empty and the patches with checkerspot butterflies. Therefore, the overall colonization rate is 2.3. b. The overall extinction rate of the entire metapopulation. The extinction rate of the entire metapopulation is 1.3. This is because 1.3 patches of the occupied 9 patches are going to become extinct.

c. Are the colonization and extinction rates likely to be at equilibrium with each other? How do you know? Both colonization and extinction rates are unlikely to be in equilibrium with each other because the colonization rate is higher than the extinction rate. Therefore, the occupied patches' population will continue to increase until the patches are fully occupied, while the number of empty patches will continue to decrease until the patches are fully occupied.

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In anatomical terminology, landmarks are surface, prominence or structure that are used to establish the location of adjacent structures, such as muscles. These landmarks are important in clinical settings, as they help healthcare providers locate structures like arteries and veins.

When locating these structures, healthcare providers use descriptive references that involve anatomical structures that are well-known. This is because these structures are easily recognizable and help in providing an accurate location for the structures being sought. For example, the brachial artery can be located by palpating the biceps muscle in the upper arm, which is a well-known anatomical structure. Similarly, the jugular vein can be located by identifying the sternocleidomastoid muscle in the neck. The use of landmarks is essential in providing accurate diagnoses and treatments for patients. Therefore, healthcare providers must have a thorough understanding of anatomical landmarks and their relationship with adjacent structures.

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Answer: The original colour of grass is green because of photosynthesis. But in terms of reflection, it looks green because the sunlight reflects the green colour off the grass, so we see it as green.

Explanation: Sun appears white, but it is made up of the colors: red, orange, yellow, green, blue, indigo, and violet. When white light hits an object, it absorbs some colors and reflect the others. Grass appears green because it absorbs all the wavelengths except green. Green is reflected off the grass, so we see grass as green. The moon doesn’t have light of its own, the moon lights up because of the sun. So at night, as the light of the sun doesn't reach the grass directly because of the moon, it doesnt reflect any color off the grass, and so our eyes detect grass as black.

Answer:

48 for the Zygote

Explanation:

A gamate(sperm) + gamate (egg)= Zygote so if the gamete as 24 its just 24+24 = 48

B. in the nucleus. Mitochondria are cell organelles that convert food energy into a form that cells can use. Hundreds to thousands of mitochondria can be found in the fluid surrounding the nucleus of each cell.

Almost all eukaryotic cells contain a membrane-bound organelle called a mitochondrion, whose primary function is to generate massive amounts of energy in the form of adenosine triphosphate (ATP).

The mitochondrial DNA circular chromosome is found inside the cellular organelles known as mitochondria. The mitochondria, found in the cytoplasm, are where the cell generates energy and performs other metabolic functions. Mothers pass on mitochondrial DNA to their children.

Because mitochondria contain ATP, the cell's primary source of energy, they are referred to as the "powerhouse" of the cell.

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Answer:

b. They connect muscle to muscle.   is correct, it is FALSE about ligaments

Explanation:

Answer:

B is false.

Explanation:

Ligaments connect bones, tendons connect muscles to bones. Neither of the two connect muscles to muscles (each muscle connects to a bone, but I don't think any connect to other muscles).

Rigor mortis usually sets in about nine hours after death occurs. It takes roughly 12 hours for rigor mortis to become fully established and about another 12 hours for it to start fading away as the body begins to decompose.

Correct answer is : True

Rigor mortis usually sets in about two to six hours after death occurs. It takes roughly 12 hours for rigor mortis to become fully established and about another 12 hours for it to start fading away as the body begins to decompose. Rigor mortis, or body stiffening, is the result of a decrease in ATP after death.

ATP is required for the muscles to relax, and without it, they become rigid. Rigor mortis can last up to 48 hours, after which the body becomes increasingly pliable as the muscles decompose.

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Eukaryotic cells have their chromosomes packed in the nucleus.

Eukaryotic chromosomes are located inside the cell's nucleus. The principal function that distinguishes a eukaryotic cell from a prokaryotic cell is the presence of a membrane-bound nucleus. This nucleus is the “control center” of the cell that stores all of the cellular's genetic records, or DNA.

In eukaryotes, however, genetic material is housed inside the nucleus and tightly packaged into linear chromosomes. Chromosomes are made of a DNA-protein complex called chromatin which is prepared into subunits called nucleosomes.

All eukaryotes have a well-described nucleus that consists of DNA. DNA is a negatively charged polymer, packed compactly inside the chromatin, engirdling the histone proteins, a ball of positively charged proteins. The octamer of histone proteins is wrapped with a DNA helix, giving rise to a structure known as nucleosomes.

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Answer: phrenic nerve

Explanation:

Dogs who get toys is the experimental group, if a student wants to test if giving dogs a toy to play with makes their tail wag more, hence option B is correct.

The experiment is the observation or procedure, which is carried out in controlled conditions, it is a testable method.

Student gives dog toys to one group, while another group of dogs does not get any toys, to test their tail wag more.

Then he counts the number of how many times dogs wag their tail, to observe the experimental group.

Therefore, Dogs who get toys are the correct option.

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The given question is incomplete so the most probable complete question is,

A student wants to test if giving dogs a toy to play with makes their tail wag more. He gives dog toys to one group, while another group of dogs does not get toys. He counts the number of times each dog wags their tail. Which is the experimental group?

A) Dogs who wagtails

B) Dogs who get toys

C) Dogs who don't get toys

Answer:

Matter

Explanation:

Sediment control items created from organic, natural coconut are called coir logs or coir wattles. Since vegetation's roots help to stabilize the soil, this is crucial for erosion control.

In order for dirt to be exposed the strong winds, heavy rains, and rushing water, it must be covered. Sometimes, human activities—particularly farming and clearing land—leave soil susceptible to erosion.

If the site is unsuitable for construction and urban developments cross existing drainage systems, they may severely exacerbate soil erosion. The natural drainage of the environment is impeded by mining and exploration activities, which can result in streams becoming eroded and silted.

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Unfortunately, throughout history, many deaf individuals have been viewed as needing to be "cured" or fixed. This often involved invasive and harmful procedures such as forced oralism (where they were prohibited from using sign language), electroshock therapy, and even lobotomies.

These attempts at "curing" deafness were rooted in ableist and oppressive beliefs that deafness was a problem that needed to be solved, rather than a valid and diverse way of being. It is important to recognize and challenge these harmful practices, and instead work towards creating a more inclusive and accepting society that values and celebrates diversity.

Many deaf persons have been the involuntary objects of attempts to cure them due to societal misconceptions and a lack of understanding about deaf culture. Over the years, various medical treatments, surgeries, and devices have been introduced with the aim of "fixing" deafness, often without the consent or input of the deaf individuals themselves. These attempts have included cochlear implants, hearing aids, and experimental therapies. While some deaf individuals may choose to pursue these options, it is crucial to respect their autonomy and recognize that deafness is not something that needs to be "cured" but rather embraced as part of one's identity.

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The most accurate statement about the interaction between a tree and its environment is a tree and its physical environment alter each other.

Physical and biological components are intricately woven into a tree's overall environment. The physical environment include those factors that are related to soil and climate they include radiation, precipitation and air's composition, as well as the surface's texture, the soil's composition, depth, and moisture holding capacity, topographic location, nutrient content, and drainage. These factors effect the growth and metabolic processes of the trees and in turn the trees alter the physical environment as they grow, they take in carbon dioxide, and the carbon they store in them which slows the rate of global warming. As they lose moisture and reflect heat upward from their leaves, they lower wind speeds and cool the air.

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Answer:

it makes blood cells. :) have a nice day!

Answer:

Put- I think I did good. I rate my work a 5.

Explanation:

It’s asking you how did u do on the questions u just got asked if got them correct then u would put what I have as the answer if u didn’t then say the opposite. And then for the what did u learn part I just don’t put nothing lol.

Answer:

I think I did a 4.5 because it was kind of easy but it was a also a little hard. I didn't really have any difficulties but just the fact on how long it took to complete.

Explanation:

Answer:

supaya tak meletup

Explanation:

sebab hitam dapat menghalang cahaya matahari daripada kena ke tabung didih agar tidak terlebih panas dan menyebabkan letupan

Answer:

Explanation:

1.observation

2.hypothesis

3.inference

4.experient

5.problem

6.conclusion

7.problem

The distal-most portion of the respiratory system that is incapable of gas exchange is the terminal bronchioles. These are the smallest airways in the lungs, and they are responsible for conducting air to the alveoli, where gas exchange takes place.

The terminal bronchioles are lined with smooth muscle and have a diameter of approximately 0.5 mm. They divide into respiratory bronchioles, which are the first structures in the respiratory system capable of gas exchange.
The terminal bronchioles do not have any alveoli or any other structures involved in gas exchange. Instead, their main function is to provide a pathway for air to reach the alveoli. The walls of the terminal bronchioles are made up of smooth muscle and elastic tissue, which allows them to contract and expand as needed to regulate airflow.
It is important to note that while the terminal bronchioles are not directly involved in gas exchange, they are still susceptible to damage and inflammation, which can affect overall lung function. In conditions such as asthma or chronic obstructive pulmonary disease (COPD), the airways, including the terminal bronchioles, can become inflamed and narrowed, leading to difficulty breathing.

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Humus is a complex mixture of organic matter that is formed through the decomposition of plant and animal remains in soil. It is a dark brown or black substance that has a spongy texture and a pleasant earthy smell. Humus is made up of a variety of organic compounds, including cellulose, lignin, proteins, and sugars, that are resistant to further decomposition. These organic compounds are broken down by microorganisms in the soil, but at a slow rate, allowing humus to accumulate over time.

One of the key characteristics of humus is its ability to improve soil fertility. Humus is an important source of nutrients for plants, and it also helps to retain moisture and regulate soil temperature. The spongy texture of humus allows it to hold water and nutrients, preventing them from being washed away by rainfall or irrigation. Humus also contains beneficial microorganisms that can help to break down organic matter and release nutrients into the soil.

Overall, humus is a crucial component of healthy soil. It contributes to soil fertility by improving nutrient availability, water retention, and soil structure. By understanding the importance of humus, farmers and gardeners can take steps to promote its formation, such as by adding organic matter to the soil, avoiding excessive tillage, and using cover crops to protect the soil from erosion.

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If DNA makes RNA, then RNA does make protein. Thus, option D is correct.

Protein has been defined as the large such as macromolecules and biomolecules that are made up of the long chains of the amino acid. There has been various function of the protein such as the DNA replication, speeding up the chemical reaction, and helps just to maintain the structure of cell.

The main function of the protein has to maintain the structure as well as function of organs, and they repair the muscle, and muscles. Diet contain high protein must be recommended for the purpose of losing weight, as well reducing fat, or increasing fat.

There are several types of the protein such as the structural protein, as well as they transport proteins, along with antibodies, contractile proteins, hormonal proteins, and enzymes.

Therefore, If DNA makes RNA, then RNA does make protein. Thus, option D is correct.

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The actual length of the bacterium is B) 1.5μm

Love I think that the answer is B sorry I I was wrong

Answer:

1:2:1

Explanation: