Decide whether the statements below about the body's first line of defence are true or false. If you think that they are TRUE, record the letter in the answer. (Use upper case, no commas and keep them in the order of the statements).
A) Most pathogens have to get inside a person's body to spread infection. Once in the body, they have ideal living conditions: food, water, warmth.
B) The skin is the body's physical natural barrier. It covers part of the body and protects it from physical damage, microbe infection, and dehydration.
C) One form of defence is the hydrochloric acid in our lungs, which destroys microorganisms when swallowed and protects against food poisoning.
D) The body has defences in place to try to stop the invading pathogens. These include the skin, digestive system, and respiratory system.
*2 points

Answer:

This is because mitochondria produce ATP during aerobic respiration and ATP is needed for muscle to contract. ... Muscles cells contain more mitochondria because they have to release large amount of energy quickly for movement.

Explanation:

Hope it's help

The correct statement that best explains how adaptation provides evidence to the scientific theory of evolution is It proves that natural selection leads to greater complexity in organisms.

Evolution is described as change in the heritable characteristics of biological populations over successive generations.

In evolution, the survival of the fittest due to adaptation has resulted in increasing the variations and complexity of the organism which is supported by the evidence collected by Charles Darwin where he noticed that Galapagos finches showed the  variations in the shape of the beaks due to different niches.

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Enzymes are a special type of protein that speeds up biological reactions. They accomplish this task as they

lower the activation energy of reactions.

what are enzymes?

They can be defined as biological polymers that catalyze biochemical reactions

What is activation energy?

Activation energy is defined as minimum amount of extra energy required by a reacting molecule to get converted into product

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Answer:

Oxygen

Oxygen is the most abundant element contained within living organisms, composing about 65% of the human body. Oxygen is also the most abundant element in the Earth's crust, and in the air that is essential for most life on Earth. Oxygen's presence in the body is largely in the form of water, which is used to produce the energy within the body needed to sustain life.

Carbon

Carbon forms the basis for all life on Earth; indeed, life forms on Earth are referred to as carbon-based life forms, emphasizing the importance of this element for life. Carbon atoms readily bond to other atomic elements, such as oxygen and nitrogen. Since carbon can so readily bond to other elements, long chains of bonds can form and provide the physical and chemical structure needed for the complex processes and structures that occur within living organisms, such as structural proteins and genetic information in the form of nucleic acids.

Hydrogen

Hydrogen is the simplest element, as its atom contains only a single proton and a single neutron. As a result of this simplicity, hydrogen readily bonds with other elements, making it an important component for the formation of living organisms. Hydrogen is the other element (along with oxygen) which forms water, a crucial component for most life forms on Earth. Hydrogen is also a byproduct in many biological reactions, including photosynthesis and metabolism.

Nitrogen

Nitrogen is one of the most abundant elements on Earth, composing approximately 80% of the air on Earth. Nitrogen is an important element in the development of plant life, as compounds containing these elements are readily absorbed and used by plants. Nitrogen is also an important component of many proteins and deoxyribonucleic acids (DNA), which is crucial for genetic material to be passed on to subsequent generations of life.

Sulfur

Sulfur is a major component of two essential amino acids used by living organisms: cysteine and methionine. These amino acids, like all amino acids, are crucial for the construction of proteins that are used for structural stability and repair of living organisms. For example, the structural integrity of hair and feathers can be attributed to these amino acids. Sulfur is also used as a source of energy and is metabolized by some species of bacteria and other lower life forms.

Phosphorus

Phosphorus is used in the formation of phospholipids, a type of molecule that is a major component of the cell membrane of all living cells. Without this cell membrane, cells would not be able to develop and would not have the structural stability to form in the first place. This protective layer of phospholipids holds all the internal components of cells in place, allowing for the processes that maintain the life of the cell to take place. The phospholipid layer also protects the cell by keeping any unwanted or potentially destructive materials outside of the cell.

(via sciencing.com)

Explanation:

hope it helps

Answer:

the atoms are molecules that react with each other, they're called reactants

Explanation:

Answer:

D

Explanation:

The others do not have 10 hydrogens

The human menstrual cycle provides an example of a(n) C) infradian rhythm because it repeats less than once per day.The human menstrual cycle exemplifies an infradian rhythm because it occurs over a longer duration than a day, typically repeating every 28 days or so.

The menstrual cycle is a complex physiological process that occurs in reproductive-age females and involves the cyclical changes in the uterus and ovaries. It is characterized by the periodic shedding of the uterine lining (menstruation) and the release of an egg (ovulation).

Infradian rhythms refer to biological rhythms that have a longer duration than a day, typically extending beyond 24 hours. The menstrual cycle lasts approximately 28 days on average, but can vary from person to person, ranging from 21 to 35 days or more. This duration is significantly longer than the 24-hour period of a circadian rhythm, which repeats once per day.

The menstrual cycle is regulated by a complex interplay of hormones, including estrogen and progesterone, which regulate the growth and shedding of the uterine lining and the release of eggs from the ovaries. These hormonal fluctuations and the corresponding changes in the reproductive organs give rise to the characteristic phases of the menstrual cycle, including the follicular phase, ovulation, and the luteal phase.

The human menstrual cycle exemplifies an infradian rhythm because it occurs over a longer duration than a day, typically repeating every 28 days or so. Understanding the nature of these rhythms is crucial for comprehending the cyclical changes in the female reproductive system and the regulation of fertility.

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Answer:

B. The growth of the plants

Explanation:

Give me brainliest if that helped! :)

The sympathetic division of the ANS causes B) airway dilation.

The sympathetic division of the autonomic nervous system (ANS) is responsible for the body's "fight or flight" response, which is triggered in times of stress, danger, or excitement. This response prepares the body for immediate action by activating certain physiological changes.

When the sympathetic division is activated, it causes the dilation or widening of the airways in the lungs. This is achieved through the relaxation of the smooth muscles that line the bronchioles, which are the small air passages in the lungs. By relaxing these smooth muscles, the diameter of the bronchioles increases, allowing for improved airflow and increased oxygen delivery to the body's tissues.

Airway dilation is an important response during the "fight or flight" response because it enhances the individual's ability to take in more oxygen and deliver it to the muscles, enabling them to respond quickly and effectively in a potentially threatening or demanding situation.

The other options listed are not accurate:

A) Contraction of smooth muscles lining the bronchioles would result in the narrowing of the airways, reducing airflow.

C) Relaxation of the diaphragm is not a direct effect of the sympathetic division. The diaphragm is primarily controlled by the somatic nervous system.

D) Decreases in breathing rates are not a direct effect of the sympathetic division. The sympathetic division generally increases physiological responses, including breathing rates, to prepare the body for action.

In summary, the sympathetic division of the ANS causes airway dilation by relaxing the smooth muscles lining the bronchioles, allowing for increased airflow and improved oxygenation of the body's tissues.

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The correct question is:

The sympathetic division of the ANS causes

A contraction of smooth muscles lining the bronchioles

B airway dilation

C relaxation of the diaphragm

D decreases in breathing rates

Answer:

The phenomenon is called convergent evolution

Explanation:

Convergent evolution is the name given to the evolutionary phenomenon whereby a similar characteristic appears independently in two unrelated species, that is, that do not have a direct common ancestor from whom they could inherit that characteristic. Similar characteristics resulting from evolutionary convergence are called analogues or homoplasms (from the Greek, “shaped in the same way”). This process is very common and can be explained by natural selection, since similar selective pressures tend to favor similar adaptations.

The type of lipoprotein takes cholesterol from cells or atherosclerotic deposits back to the liver is High density lipoproteins (HDL).

High density lipoprotein can transport back cholesterol and sometimes called "good cholesterol". Patient with too low high-density lipoprotein will be considered having dyslipidemia(disturbance in cholesterol concentration) when other cholesterol considered as dyslipidemia if its too high.

Patient with too low high-density lipoprotein will be considered having dyslipidemia(disturbance in cholesterol concentration) and high density lipoprotein can transport back cholesterol and sometimes called "good cholesterol".

Therefore, The type of lipoprotein takes cholesterol from cells or atherosclerotic deposits back to the liver is High density lipoproteins (HDL).

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Yes, 2 objects made from exactly same substance but different shape or size have the same density.

A substance's density is typically independent of its size, both large and small, and independent of its shape. Despite having distinct masses and volumes, a gold brick and a statue both have the same density. A substance's density is generally understood to be its mass per unit volume.

Therefore, object with the highest density will be the smaller of two things if they both have the same mass but differ in size. So one can say that two things have comparable densities if they have the same mass.

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The statement 'more new species have evolved in coral reef habitats than in most other types of habitats.' is accurate. A coral reef is a hotspot of biodiversity.

A coral reef is a marine ecosystem composed of organisms (i.e., corals) that form a wall together (i.e., reef-building corals).

These reefs consist of many colonies of coral polyps, which held together by a calcareous material (i.e., calcium carbonate)

A coral reef is a hotspot of biodiversity because there are many different species that live and evolved in this type of habitat.

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Answer:

'more new species have evolved in coral reef habitats than in most other types of habitats.'

Explanation:

trust

Answer:  All of these choices are correct.

Explanation:

The Cytomegalovirus is one of the most common viruses there is that affects humans. Humans of all ages can carry it but because the immune system is capable of fighting it, it is usually in its latent form which is the way that it is usually spread.

When the immune system has been weakened, the virus can cause conditions such as liver problems. It is spread through bodily fluids such as  saliva, respiratory mucus, milk, urine, semen, and cervical secretions.

Answer:

Plants absorb carbon dioxide from the air and use it to feed themselves in the process called photosynthesis. The carbon dioxide, through tiny pores called stomata, reaches the leaves of the plant. ... The factory emits Oxygen, or O2, into the ambient air until the process is finished.

Explanation:

After the removal of CO2 from air by the plant, then Carbon would be absorbed by plant, Oxygen will be emitted into the air.

Therefore, the process is  called Photosynthesis

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The myeloid lymphocyte will eventually become a granulocyte.

Granulocytes are a specific kind of immune cell that releases enzyme-containing granules when an infection, an allergic response, or an asthma attack occurs. Basophils, eosinophils, and neutrophils are all types of granulocytes. White blood cells come in the form of granulocytes. They are also known as polymorphonuclear leukocytes, PMN, and granular leukocytes.

White blood cells called granulocytes have tiny granules on their surface. There are proteins in these granules. Neutrophils, eosinophils, and basophils are the distinct subtypes of granulocytes. Neutrophils, in particular, are a kind of granulocyte, that aid the body in fighting bacterial infections. When there is a severe infection, the body often produces more granulocytes. Individuals who have fewer granulocytes are more susceptible to severe illnesses.

Therefore, the myeloid lymphocyte will eventually become a granulocyte.

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Answer:

system.

Cruel and inhumane treatment: Some argue that solitary confinement constitutes cruel and inhumane treatment, as it can cause severe psychological harm to inmates. Being isolated for extended periods of time can lead to anxiety, depression, hallucinations, and other mental health issues.

Lack of rehabilitation: Solitary confinement is not effective in rehabilitating prisoners. Instead, it can make inmates more violent and unstable, as they have no access to education, therapy, or other forms of rehabilitation.

Violation of human rights: Solitary confinement violates the human rights of prisoners, as it deprives them of basic needs such as social interaction, natural light, and fresh air. It also denies them the right to due process and the ability to challenge their confinement.

Disproportionate use: Solitary confinement is often used disproportionately against marginalized groups such as people of color, LGBTQ+ individuals, and those with mental illnesses. This can perpetuate systemic discrimination and inequality within the prison system.

Ineffective as a deterrent: Solitary confinement has not been proven to be an effective deterrent against crime. Rather, it can perpetuate a cycle of violence and trauma, leading to higher rates of recidivism.

Overall, these ethical arguments suggest that the use of solitary confinement should be reconsidered and alternative forms of punishment and rehabilitation should be explored.

Explanation:

Answer:

Solitary confinement, also known as segregation or isolation, is a form of punishment where an inmate is kept in a cell for 22-24 hours a day with little to no human interaction. This practice has been criticized for its severe impact on mental health, and has raised several ethical concerns. One of the primary arguments against the use of solitary confinement is that it violates the Eighth Amendment, which prohibits cruel and unusual punishment. The United Nations has also condemned its use as a form of torture, as it can lead to psychological and physical harm.

Explanation:

Caesar Salad, milk and cereal, Blood, Sand  are heterogeneous mixture while water, sugar and salt are compounds and Iron filings is a element and Sea water is a homogeneous mixture

A pure substance with only one kind of atom makes up an element. The elements oxygen, hydrogen, and iron are examples.

A compound is a substance that is composed of two or more distinct elements that have been chemically bonded together in a specific proportion. Examples include sodium chloride, carbon dioxide, and water.

A combination of two or more substances that are evenly distributed at the molecular level is referred to as a homogeneous mixture. The mixture's composition is constant throughout. Examples include air, sugar water solutions, and saltwater.

A combination of two or more substances that are not distributed equally is referred to as a heterogeneous mixture. Visual differentiation between the various elements is possible and with time, they may settle or separate. A salad with various ingredients, soil and vinegar dressing are some examples.

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Answer:

B. A feature or behavior that helps an animal survive in its environment.

B.) The same physical properties.

Also the copper wire would also have the same Chemical Properties. They wouldn't have a different arrangements of atoms because that would mean they are a different substance. They wouldn't have the same mass whereas they are now in 2 pieces. Copper is not a crystal meaning it would not have any crystal structures. That leaves the only applicable answer to be B. Also in case you need to find whether or not two identical substances are the same would be by testing the melting point, hardness and solubility. I just finished working on this section in my own 8th grade Science class so I think this should either help you now or later on.

Hope this helps.

-Northstar

Answer:

Water moves in and out of cells by osmosis through the cell membrane. ... Aquaporins selectively conduct water molecules in and out of cells, while preventing the passage of ions and other solutes.

Explanation:

yw

Answer:

Explanation:

no for this one but i couldn't  add this to theother one . Seven more than twice a number is greater than negative eleven.

This is a big question and it is also important for climate studies and I am only going to answer it in simple terms but let’s not forget there are quantitative answers at global scales.

When the wind blows onshore it moves the surface water towards the shore. If the shore is a wall like a harbour wall then the moving surface water raises the water level at the wall. This raised water level at the wall puts pressure on the deeper water below (which moves away from the base of the wall to regions of lower pressure or away from the wall at the bottom). The water at the wall moves downward to compensate and this is called downwelling. More surface wind (stress) and more downwelling.

When the wind blows off shore. The surface water moves away from the wall. Sea level falls at the wall and water rises up the wall from the bottom. This is called upwelling.

Ekman worked out that in the open ocean the transport of surface water moves to the right of the wind direction due to the effects of the Earth’s rotation (in the northern hemisphere). So when the wind is parallel to a shore there will be upwelling or downwelling depending on the wind direction. Imagine a straight shoreline aligned towards the south (or north). If the wind blows to the south (from the north or a north wind) then the surface water moves offshore to the right of the wind and upwelling occurs.

These upwelling regions bring up cooler water rich in inorganic nutrients and surface phytoplankton growth is increased. This happens particularly seasonally off West Africa and Venezuela. There is also Equatorial Upwelling with zonal wind so some corals won’t die out so quickly with global warming.

Answer:

Duck is smaller whereas peacocks are big

Duck has black\brown features whereas peacocks have colorful feathers.