The table shows data about the percentages of gases in air inhaled and exhaled. The gases are oxygen (O2), nitrogen (N2), and carbon dioxide (CO2).
Assume the volume of air inhaled and exhaled is 500 mL. Calculate the difference (in mL) between the amount of oxygen inhaled and the amount of oxygen exhaled.
A. 22.85 mL of oxygen
B. 4.57 mL of oxygen
C. 104.7 mL of oxygen
D. 81.85 mL of oxygen

Answer:

Phospholipids

The term semipermeable means to allow some substances through and prevent others from passing. The cell membrane is semipermeable because it prevents harmful toxins from entering and damaging the cell. At the same time, the cell membrane allows nutrients and other helpful substances through. In this way, the cell membrane is like a security guard of the cell.

Lipids have more carbon and hydrogen atoms than oxygen atoms. They comprise primarily hydrocarbons, making them hydrophobic. Besides storing energy, they partake in vital biological roles including forming biological compounds, cell membranes, hormones, etc.

Lipids have more carbon and hydrogen atoms than they do oxygen atoms. Comprising a diverse group of compounds, lipids are primarily made of hydrocarbons - atoms of carbon and hydrogen. Despite the presence of other elements like nitrogen, sulfur, and phosphorus in their composition, carbon, and hydrogen atoms are most abundant. Their hydrogen and carbon-rich nature makes all lipids hydrophobic, preferring to not mix well with water molecules.

Not only do lipids serve as an energy store, but they also play structural roles in cell membranes and function as hormones, pigments, and pharmaceuticals. A common type of lipid, triglycerides, comprises a glycerol backbone attached to three fatty acid chains. Lipids are also integral components of biological compounds, including steroids such as cholesterol and signaling molecules like prostaglandins, both derived from fatty acids.

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23 haploid Chromosomes for each human

Hey there!

Cells maintain homeostasis using active transport by maintaining conditions and within the normal ranges inside all of an organism's cells.

Hope this helped. Would you mind marking me brainliest. Thankyou!

Answer:

homeostasis in a cell maintained when a cell maintains stability in response to any situation

Explanation:

I would say true, because both abundant thick vegetation and there are 3 known types of grasslands, also that many diffrent species of animals live on the grasslands.

The stroma is the colorless fluid that surrounds the grana within the chloroplast.  

The stroma contains the enzymes of light-independent reactions. Thus it is the ground matrix of the chloroplast.

Answer:

stoma

Explanation:

Habitat is a place in which an animals lives

A niche is the organisms place or job in the environment

Answer:

Habitat:

Habitat may be defined as the particular area occupied by the organism. Habitat involves the physical activity performed by the organism in its area. Habitat only reflects the living place of the organism. Habitat explains where the species live in the ecosystem.

Niche:

Niche may be defined as the role of the individual organism in its ecosystem. The function or the physiological activity of the organism in the area describes the niche. The association of the organism with the biotic and abiotic component to obtain food is included in niche. Niches explains the way by which organism live in an ecosystem.

i think its D or B just take a 50/50 guess i think its D

Answer:

A decrease in ATP production in the Krebs cycle

Explanation:

Apex

Answer: option B through mutation

Explanation:

So, firstly the mutation is the one which gives rise to the resistance which is then spread among the bacterial population by the process of reproduction as well horizontal gene transfer.

Can you add the picture or describe it to me? Right now I'd guess that it's probably bacteria because bacteria breaks it down into ammonium and nitrate, which is taken up by the plants by a process of nitrogen fixation.  So, D.

Answer: Bacteria

Explanation:

The bacteria fix nitrogen in order to provide it to the plants. The nitrogen that is available in the atmosphere in the form that it cannot be used by the plant itself.

This form of nitrogen is converted into another form which can be used by the plants. The nitrogen fixing bacteria perform this process.

The nitrogen from the plants get transferred to the animals and then released into the environment integrated in the waste material.

The backbone of DNA is formed by a sugar-phosphate backbone.

The backbone of DNA is formed by a sugar-phosphate backbone.

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Answer:

Ions are moved against the concentration gradient.

Explanation:

Active transport mechanisms require the use of the cell's energy, usually in the form of adenosine triphosphate (ATP).

Because active transport is not passive and requires molecules to move against a concentration gradient, it requires energy. Thus, the carrier protein needs energy to transport it. Energy in the form of ATP must be used for it.

In order for cells to acquire molecules or ions from the environment in opposition to the concentration gradient, active transport is a crucial activity.

On the other hand, metabolic products or electrolytes that are substantially loaded into cells might be expelled in opposition to the concentration gradient.

In the face of these passive variations, active transport keeps concentrations of ions and other chemicals required by live cells constant.

Therefore, The usage of the cell's energy, often in the form of adenosine triphosphate, is necessary for active transport processes (ATP).

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B. Sounds like the best awnser to me.

A quick search provides me with this:                       In the kidneys, the cardiovascular system maintains homeostasis by providing adequate blood pressure that the kidneys utilize to filter toxins and waste from the blood and subsequently the body. The cardiovascular system also helps the skin in homeostasis by regulating body temperature. /         Capillary action (sometimes capillarity, capillary motion, capillary effect, or wicking) is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity. The effect can be seen in the drawing up of liquids between the hairs of a paint-brush, in a thin tube, in porous materials such as paper and plaster, in some non-porous materials such as sand and liquefied carbon fiber, or in a cell. It occurs because of intermolecular forces between the liquid and surrounding solid surfaces. If the diameter of the tube is sufficiently small, then the combination of surface tension (which is caused by cohesion within the liquid) and adhesive forces between the liquid and container wall act to propel the liquid.

From this I would say your awnser is B.

C Thermoregulation and hormone transport

The Circulatory System delivers oxygen and nutrients in the blood to the surrounding cells to maintain Homeostasis. The blood in the Circulatory System is needed throughout the body so that other systems work properly. Like for instance the Nervous System has the brain, and the brain needs blood to function.

In any ecosystem two factors interact together are abiotic factors and biotic factors. Abiotic factors include non-living such as soil, air, water and climatic factors ( temperature, humidity, rainfall or precipitation) whereas, biotic factors  includes all the flora (plants) and fauna (animals). These two factors interact through food chains to function an ecosystem.

Autotrophic organisms convert energy from the sun into the bonds of glucose, while heterotrophic organisms convert energy from glucose into adenosine triphosphate (ATP).

Autotrophic organisms, such as plants and some bacteria, utilize photosynthesis to capture solar energy and convert it into chemical energy stored in glucose molecules. This process involves the conversion of carbon dioxide and water into glucose and oxygen, using the energy from sunlight.

Heterotrophic organisms, including animals and many microorganisms, are unable to harness sunlight directly. Instead, they obtain energy by consuming organic compounds, such as glucose, derived from autotrophic organisms or other heterotrophs. Through processes like glycolysis, the citric acid cycle, and oxidative phosphorylation, heterotrophic organisms break down glucose to release energy. This energy is primarily stored in ATP, a molecule that serves as the primary energy currency in cells. Heterotrophic organisms rely on this stored energy in ATP to fuel their various cellular processes and sustain their life functions, as they cannot directly capture and convert sunlight into energy as autotrophs do.

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All of the above (but if you want to distinguish DNA from RNA, it’s thymine)

Answer:

Thymine

Explanation:

Edge2020

magnetosphere; cosmic rays; charged

Unlike other biomolecule groups, fatty acid monomers are not directly bonded to each other in polymer chains. Dehydration synthesis reactions in lipids form an ester linkage between the carboxyl group of a fatty acid and the hydroxyl group of an alcohol monomer such as glycerol.

Answer:

A lipid is a polymer made up of three molecules of fatty acids and one molecule of glycerol. They are the main constituents of body fat in humans and other animals, as well as vegetable fat. Glucose molecules are the monomers for polysaccharides. Amino acids are the monomer of the polypeptide chain or proteins.

I think the answer is a baleen.

the highest mountain in north america is denali, which is in alaska. it is 20,310 feet high.

Geologic time divisions: Eon, era, period, epoch, age. Each reflects significant changes in Earth's history, aiding understanding of planetary evolution.

The divisions of geologic time, from largest to smallest, are:

1. Eon: The longest division of geologic time. The Earth's history is divided into four eons: Hadeon, Archean, Proterozoic, and Phanerozoic.

2. Era: Each eon is divided into eras. The Phanerozoic eon, for example, is divided into three eras: Paleozoic, Mesozoic, and Cenozoic.

3. Period: Each era is divided into periods. For instance, the Mesozoic era is divided into the Triassic, Jurassic, and Cretaceous periods.

4. Epoch: Each period is divided into epochs. The Cenozoic era's Quaternary period, for example, is divided into the Pleistocene and Holocene epochs.

5. Age: The smallest officially recognized division of geologic time. Ages are typically defined by the appearance and disappearance of fossil species.

These divisions help geologists and paleontologists to organize Earth's history and understand the sequence of events that have shaped our planet. The boundaries between these divisions are often marked by significant changes in the rock record, such as the appearance of new life forms, major extinction events, or shifts in Earth's tectonic activity.

Answer

The Continental drift

Explanation

From a geographical perspective, the evidence is that Africa and South America might have been a single mass of land due to similar coastal alignment. In addition to that, there is similarity in mountain ranges of Buenos Aires in Argentina to those mountains in South Africa. These mountain ranges have same age and were formed by similar rocks.

Answer:

Glacial Movements

Explanation:

Glaciers usually move in one direction, creating large scratches in rocks around the coastline.

Answer:

A) Type O- has no antigens on its red blood cells, so the red blood cells can’t be attacked by antibodies of other blood types.

C) Type O- has no Rh antigen, so the red blood cells can’t be attacked by the Rh antibody.

Explanation:

hope this helps

Type O- blood is considered the universal donor because its red blood cells have no A or B antigens, and it lacks the Rh antigen, preventing immune reactions when transfused into individuals of any other blood type.

Type O- blood is referred to as the universal donor for specific reasons. Mainly, Type O- has no antigens on its red blood cells (RBCs), which means it generally does not initiate an immune response when transfused into individuals of any other ABO blood type. This absence of A and B antigens on the RBCs prevents antibodies in the recipient's plasma from recognizing and attacking the transfused blood cells. Additionally, Type O- blood does not have the Rh antigen, which is another common cause of blood transfusion reactions.

Therefore, the correct answers to the question are:

Answer:

1 color

2 C

Explanation:

28. Answer: All mutations do not affect the organisms due to the following reasons:-

1. The DNA consists of both coding and non coding regions. The coding regions are known as exons and non coding regions are called as introns. The non coding regions do not make up the protein. Thus, if the mutations occur in non coding regions they do not affect the organism.

2. There are some mutations that result in the change of the codon but the new codon formed codes for the same amino as the previous one. This is possible because of the degeneracy of genetic code. For eg, AAA codes for lysine, however if the mutation changes this code to AAU then this also codes for lysine. Such mutations are called as silent mutations.

3. There are some mutations which result in the change in amino acid however the new amino acid formed is similar to the previous one in its properties for e.g leucine and isoleucine. Such mutations are called as neutral mutations and they do not affect the organism

29. Answer: 1. The process of mitosis results in the formation of two diploid cells whereas meiosis results in the formation of 4 haploid cells.

2. The process of mitosis takes place to produce copies of the body cells whereas the process of meiosis takes place to produce the gametes.

Explanation:-

29. Answer:

Pros

1. Genetic engineering helps us to tackle several diseases. There are many diseases which are caused due to genetic mutations. Genetic engineering helps us to rectify these mutations and hence combat such diseases.

2. Genetic engineering helps us to produce new foods which can withstand adverse conditions such as high/low temperatures, low rainfall, are disease and pest resistant etc. This, genetic engineering helps to significantly improve crop production.

Cons

1. Genetic engineering leads to a decrease in genetic diversity.

2. It can lead to a decrease in the nutritional value of food as genetic engineering often causes an accelerated growth of animals and hence, the nutritional valie of poultry foods is compromised.