Where does fatty acid synthesis take place, in what organ?

collagen is a component of the extracellular matrix produced by an animal cell so the correct answer is collagen.

Collagen is a protein that is a major component of the extracellular matrix produced by animal cells. It is a fibrous protein that provides structural support to tissues and organs. Collagen is found in skin, bones, tendons, ligaments, and cartilage, among other tissues. It is also important for wound healing and maintaining the integrity of blood vessels.

In contrast, cellulose is a carbohydrate that is found in plant cell walls, and cadherin is a protein that is involved in cell-cell adhesion. While these molecules are important in their own right, they are not components of the extracellular matrix produced by animal cells.

Therefore, the correct answer to the question is collagen.

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Answer:

Due to splitting of lands.

Explanation:

These Glossopteris fossils got so far apart from each other because of the splitting of super continent about 175 million years ago. Before 175 million years, India and Australia are attached to each other and these Glossopteris plants are present on these lands but with the passage of time, the lands of India and Australia split and go far away from each other so due to splitting of lands, these fossils got so far apart from each other.

Medium muscular arteries are a type of blood vessel that are important to the circulatory system. They are thick-walled vessels that act as feeder vessels to the capillaries and assist in the transport of oxygen-rich bloodstream throughout the body.

Medium muscular arteries are named for the regions in which they deliver blood, such as the mesenteric arteries that supply the small and large intestines, and the coronary arteries which provide oxygen-rich bloodstream to the heart muscles. They are essential for supplying the organs and other tissues with the necessary oxygen and nutrients to carry out vital functions.

The muscular walls of these arteries help to regulate and control blood flow by constricting and expanding as needed. This helps to maintain an even and consistent blood pressure, ensuring that the correct amount of blood reaches the various parts of the body. It also helps to distribute oxygen throughout the body, enabling the body to function as it should.

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The correct option regarding sea anemones is (b) i.e. None of the other given options of answer is correct. The order Actiniaria contains several marine creatures, including sea anemones. They resemble anemones, a kind of terrestrial plant, in look and name.

There is no free-swimming medusa stage in sea anemones. Invertebrates of the order Actiniaria that are predatory in the sea include sea anemones. The eggs and sperm produced by the polyp itself are fertilised to create a planula larva. It immediately grows into polyps. They are capable of having both sexual and asexual offspring. They are unable to produce their own food or engage in photosynthesis. As a result, sea anemones and single-celled algae form facultative mutualistic partnerships. The oral disc and tentacles are home to the algae, which are exposed to sunlight and protected from other feeders. The algae provide the sea anemones with food and oxygen. The stinging cells also protect the algae, making it less likely that herbivores would eat them up.

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The statement that best explains the differences in leaf size, shape, and color among trees of the same species is: "Flexibility in gene expression leads to differences between tree leaves."

Trees of the same species can have variations in the characteristics of leaf due to the flexibility of gene expression. The genetic makeup (genotype) of trees within a species may be similar but, the expression of those genes can be influenced by various factors such as environmental conditions and developmental processes. These factors leads to the differences in the way genes are activated or suppressed which then results in variations in leaf size, shape, and color.

Environmental factors, such as sunlight, temperature, humidity, and nutrient availability, can influence gene expression and contribute to the observed diversity in leaf characteristics. This flexibility in gene expression allows trees of the same species to adapt to their specific environments and optimize their performance in varying conditions.

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Explanation:

Because it shows the relation of organisms with each other in a habitat, rather than just a small segment of it like a food chain. It is also still pretty easy to understand like a food chain.

Answer:

Some enzymes help break large molecules into smaller pieces that are more easily absorbed by the body. ... Other enzymes help bind two molecules together to produce a new molecule. Enzymes are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction.

Explanation:

The absence of a sporophyte generation in the life cycle of charophytes is the key characteristic that differentiates them from land plants.

The characteristic of land plants that is absent from their closest relatives, the charophytes, is the presence of sporophytes. While both land plants and charophytes exhibit sexual reproduction, multicellularity, and production of spores, it is the differentiation into distinct sporophyte and gametophyte generations, known as alternation of generations, that sets land plants apart.

In land plants, the life cycle alternates between haploid gametophytea  stage, which produces gametes (sperm and eggs), and a diploid sporophyte stage, which produces spores through meiosis. These spores then develop into new gametophytes, continuing the cycle.

Charophytes, on the other hand, do not have a distinct sporophyte generation. Their life cycle predominantly consists of a haploid stage, with sexual reproduction occurring through the fusion of haploid gametes to form a brief diploid zygote. This zygote then undergoes meiosis to produce haploid spores, which develop into new haploid individuals, but no distinct sporophyte stage is present in their life cycle.

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Separate mRNAs are transcribed from different promoter sequences upstream of each gene. The correct answer is A.

Since the passage mentions that the operon contains two genes, cgr1 and cgr2, and the question specifically asks about the production of their corresponding proteins, we can deduce that they are transcribed separately. An operon is a group of genes that are transcribed together into a single mRNA molecule. However, the genes within an operon can have their own promoter sequences that control their transcription. Therefore, cgr1 and cgr2 likely have their own promoter sequences that direct the transcription of separate mRNAs, which are then translated into their respective proteins.

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Answer:

i think the one u picked was correct

Explanation:

Answer:

Complex carbohydrates contain longer chains of sugar molecules than simple carbohydrates. The body converts these sugar molecules into glucose, which it uses for energy. As complex carbohydrates have longer chains, they take longer to break down and provide more lasting energy in the body than simple carbohydrates.

Simple Sugars or Simple Carbohydrates can help regulate blood sugar level, while Complex Carbohydrates are what gives the body a main energy source.

This the the structural difference between them:

Simple sugars are called monosaccharides, made up of single sugar molecules.

Complex carbohydrates are made up of sugar molecules that are strung together in long, complex chains. Complex carbohydrates (polysaccharides) comprise starches and dietary fibers. Because they are polysacchrarides they have multiple molecules molecular bonded together.

The structure of simple sugar is referred to as monosaccharides which are made up of simple sugar molecules. Examples of this form include glucose, fructose, galactose, etc.

The structure of complex carbohydrates arises from long and complex chains of simple sugars which are held together by 1,4 glycosidic linkage. Examples include starch, cellulose, etc.

The function of simple sugar is to regulate the blood glucose level and provide direct energy to the cells for their metabolic processes.

The function of complex carbohydrates is to store energy for the situation of deficiency.

It also provides vitamins, minerals, and other fibers that are essential for maintaining the good health of the individual.

Therefore, it is well described above.

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Bioaccumulation is the total accumulation of certain chemicals/contaminants in an organism, coming from diverse sources such as water, air, and diet. Therefore the case of mercury occurs when mercury is accumulated in an organism, for example, fish. The most common pathway for this to happen is through the food chain, nonetheless can occur through abiotic means, an example is in fish, where methylmercury is acquired through the gills.

When methylmercury is absorbed through the gastrointestinal tract & enters the bloodstream and goes rapidly to other parts of the body.

Mercury is a persistent substance, which can bioaccumulate, in living organisms, inflicting increasing levels of harm on higher-order species such as predatory fish and fish-eating birds and mammals through a process known as "biomagnification"

The release of processed mercury can lead to a progressive increase in the amount of atmospheric mercury, which enters the atmospheric-soil-water distribution cycles where it can remain in circulation for years. Mercury poisoning is the result of exposure to mercury or mercury compounds resulting in various toxic effects depending on its chemical form and route of exposure.

The major route of human exposure to methylmercury (MeHg) is largely through eating contaminated fish, seafood, and wildlife that have been exposed to mercury through the ingestion of contaminated lower organisms.

King mackerel, marlin, orange roughy, shark, swordfish, tilefish, ahi tuna, and all contain high levels of mercury.

Human activity is the main cause of mercury release, especially coal-fired power stations, residential coal burning for heating and cooking, industrial processes, waste incinerators, and as a result of mining for mercury, gold, and other metals.

Reducing consumption of raw materials and products generating mercury releases

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Another name for the evolutionary force called gene flow is Admixture.

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Answer:

a

Explanation:

types of salts are different <3

The genetic information in DNA is divided into units called genes, option B is correct.

The genetic information in DNA is divided into units called genes. Genes are the functional units of heredity that carry instructions for the synthesis of proteins, the building blocks of life. Genes determine the characteristics and traits of an organism by directing the production of proteins through a process known as gene expression.

The information stored in genes is passed from parents to offspring during reproduction, ensuring the continuity of traits across generations. Genes play a crucial role in determining an individual's traits, susceptibility to diseases, and response to the environment. They are the fundamental units of genetic information and are responsible for the diversity and complexity of life on Earth, option B is correct.

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Answer:

Since G = C, therefore G=25% as well as C=25%.

Explanation:

This is known as the Chargaff's rule. If A = 25%, we can conclude that T = 25%. The remaining 50% (100-25-25) of the DNA is composed out of guanine and cytosine (G+C=50%).

Answer: It's different because it is a bacteria eater.

Explanation: A bacteriophage is a type of virus that infects bacteria. In fact, the word "bacteriophage" literally means "bacteria eater," because bacteriophages destroy their host cells. All bacteriophages are composed of a nucleic acid molecule that is surrounded by a protein structure.

Hope this helps! Stay safe :))))

Answer:

Even bacteria can get a virus! The viruses that infect bacteria are called bacteriophages.

Explanation:

A bacteriophage is a virus that infects bacteria.

A bacteriophage, or phage for short, is a virus that infects bacteria. Like other types of viruses, bacteriophages vary a lot in their shape and genetic material.

Answer: Some are green because of the chlorophyll, some chlorophyll breaks dowm when its cold

Explanation:

Option C is correct. If heat energy is absorbed by the system during a chemical reaction, the reaction is said to be endothermic.

Energy is either absorbed or emitted in chemical reactions. An exothermic reaction emits heat energy into the environment, whereas an endothermic reaction absorbs heat energy from it.

An endothermic reaction happens as a result of the reactants absorbing energy. As energy is transported from the surroundings to the system, the temperature of the immediate environment decreases.

In contrast, an exothermic reaction transfers energy into the environment, typically in the form of heat. The surroundings' temperature rises as a result of this. Fuel combustion and the reaction between an acid and a base are two examples of exothermic processes.

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Adenosine triphosphate (ATP) connects anabolism and catabolism in cells by storing energy from catabolic reactions and providing that energy to anabolic reaction.

Adenosine triphosphate (ATP), also known as energy molecule, is found in animal and plants cells.

It plays a huge role in anabolic and catabolic reactions.

During anabolic reaction, simple organic molecule join together to form complex molecule by using energy.

For example, carbohydrates, fats, proteins and glycerol.

While in catabolic reaction, large complex molecules disintegrate to form small molecule and in this reaction a large amount of energy is released.

This energy is stored by the body cells for later use.

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Answer: But the mutations we hear about most often are the ones that cause disease. Some well-known inherited genetic disorders include cystic fibrosis, sickle cell anemia, Tay-Sachs disease, phenylketonuria and color-blindness, among many others. All of these disorders are caused by the mutation of a single gene.

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Explanation:

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When the native proteins are separating and we shine the UV light on the gel, the bands are faint. The reason is that native proteins maintain their three-dimensional shape, which enables them to fold back on themselves and protects their hydrophobic core from interaction with the negatively charged SDS molecule.

The SDS-PAGE buffer has a denaturing agent, which causes the protein to denature, lose its three-dimensional shape, and have a uniform negative charge distribution.The migration of proteins that are exposed to a denaturing agent, such as sodium dodecyl sulfate, is based on the length of their polypeptide chains. The bands are darker when proteins are denatured because the denaturation process eliminates their tertiary structure and results in a uniform negative charge distribution, making the SDS-protein complex size-dependent. As a result, the negatively charged SDS binds to the protein, giving it a negative charge, which causes it to migrate through the gel at a rate proportional to its length and charge-density.

Hence, we can conclude that native proteins maintain their three-dimensional shape, and the SDS-PAGE buffer has a denaturing agent that causes the protein to denature, lose its three-dimensional shape, and have a uniform negative charge distribution, which is the main reason for the difference in what we see in the denatured protein lane compared to the native protein lane when we shine the UV light on the gel.

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In cellular respiration, electron carriers like NADH and FADH2 are responsible for carrying high energy electrons from the Krebs cycle to the electron transport chain. The electron transport chain is a sequence of electron transporters embedded in the inner membrane of the mitochondrion.

Here, the high-energy electrons from NADH and FADH2 are used to create a proton gradient by pumping hydrogen ions (protons) into the intermembrane space, which generates a force that drives ATP synthesis. ATP synthase, an enzyme complex in the inner mitochondrial membrane, uses the energy from the proton gradient to synthesize ATP by adding a phosphate group to ADP.As the high-energy electrons pass through the electron transport chain, they transfer their energy to protein complexes embedded in the inner mitochondrial membrane. This energy is used to actively transport hydrogen ions (protons) from the mitochondrial matrix to the intermembrane space, creating a concentration gradient of protons.ATP synthase, an enzyme complex located in the inner mitochondrial membrane, harnesses the energy from the proton gradient. It allows the protons to flow back into the mitochondrial matrix through a channel within the enzyme. This flow of protons powers the ATP synthase to catalyze the synthesis of ATP.

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Answer:

DNA and RNA

Explanation:

The term nucleic acid is the overall name for DNA and RNA. They are composed of nucleotides, which are the monomers. They are made of three components --  a 5-carbon sugar, a phosphate group and a nitrogenous base.

The pairing of nitrogenous bases in DNA is specific because of their chemical structure and hydrogen bonding patterns.

DNA is the genetic material in living organisms. DNA has the blueprint of life and is responsible for controlling all of the cell's activities. DNA is double-stranded and made up of nucleotides, which are composed of a nitrogenous base, a sugar molecule, and a phosphate group. Adenine, guanine, cytosine, and thymine are the four nitrogenous bases found in DNA. DNA strands are held together by hydrogen bonds between the nitrogenous bases.

The pairing of nitrogenous bases in DNA is a specific process. The nitrogenous bases form hydrogen bonds with one another in a particular way: Adenine (A) pairs with Thymine (T), and Guanine (G) pairs with Cytosine (C). The pairing of the nitrogenous bases is determined by their chemical structure and hydrogen bonding patterns. The base pairs in DNA are complementary. A and T pair because they form two hydrogen bonds, and G and C pair because they form three hydrogen bonds. These bonds provide the stability to the DNA double helix. This specificity of nitrogenous base pairing allows for DNA replication, which is the process of creating a new copy of DNA from an existing one, to occur with great accuracy.

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Answer:

water vapor, carbon dioxide, and sulfur gases (and ash, during an eruption and depending on the volcano).

Answer:

dang it I forgot this one so someone else help this person out!!

Gastropods (snails) have a single, whorled shell. If the apex (tip) is pointing up and the opening is to the left, this is known as a sinistral condition. In discussing echinoids, "regular" means there is no preferred direction of travel. Oysters are bivalves, like clams, but differ from them in having asymmetrical, different size shells and having calcite shells.

The ultimate cause of the mass extinction at the end of the Cretaceous period is suspected to be a meteorite impact. The condition in which Gastropods (snails) have a single, whorled shell with the apex pointing up and the opening to the left is known as a sinistral condition.

Echinoids are regular when there is no preferred direction of travel. They have a spherical or disk-shaped internal skeleton known as a test and spines that are mobile. Their test is made up of numerous plates, which in turn are covered in tubercles and pincers. Oysters differ from clams in having asymmetrical, different size shells and having calcite shells.

They are sessile animals that do not move around the seafloor but rather attach themselves to rocks or other hard surfaces. A meteorite impact is suspected to be the ultimate cause of the mass extinction at the end of the Cretaceous period. The impact produced shock waves that generated tsunamis, earthquakes, and firestorms. The ejected dust and debris from the impact site resulted in global darkness and cooling of the Earth's atmosphere.

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Safety measures must be taken to store nuclear waste primarily because the waste is highly radioactive, toxic, and poses a significant threat to human health and the environment. Proper storage and handling are crucial to prevent accidents, leaks, and exposure to harmful radiation.

Nuclear waste storage requires multiple layers of containment and security to ensure its safety. These measures include the use of durable storage containers made from materials that resist corrosion and deterioration, such as stainless steel or concrete. Waste is often stored deep underground in specially designed facilities to minimize the risk of accidental exposure or leakage.

Additionally, strict regulations and monitoring procedures are enforced to ensure that storage facilities are well-maintained and comply with safety standards. Furthermore, transportation of nuclear waste is carried out using highly secure and shielded vehicles to reduce potential risks during transit. In conclusion, elaborate safety measures are essential to protect both people and the environment from the hazards posed by nuclear waste.

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The four major blood vessels in the heart are:

1. Aorta: The aorta is the largest artery in the body and carries oxygenated blood from the left ventricle of the heart to the rest of the body. It distributes oxygen-rich blood to various organs and tissues.

2. Pulmonary Arteries: The pulmonary arteries carry deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation. There are two pulmonary arteries, one for each lung.

3. Superior Vena Cava: The superior vena cava is a large vein that carries deoxygenated blood from the upper body and arms back to the right atrium of the heart. It collects blood from the head, neck, upper limbs, and upper chest.

4. Inferior Vena Cava: The inferior vena cava is another major vein that carries deoxygenated blood from the lower body and legs back to the right atrium of the heart. It collects blood from the abdomen, pelvis, and lower limbs.

These four major blood vessels play crucial roles in the circulation of blood within the heart and throughout the body, ensuring the delivery of oxygen and nutrients to various tissues and the removal of waste products.