Differentiate between old theory and modern theory of working mechanism of heart of frog?​

Answer:

A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)

Explanation:

Although the cuticle provides important protection from excessive water loss, leaves cannot be impervious because they must also allow carbon dioxide in (to be used in photosynthesis), and oxygen out. These gases move into and out of the leaf through openings on the underside called stomata (Figure 3b).

Answer:

A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)

Explanation:

The option (A) is the correct answer. This statement is the required answer.

Answer:

Genotype: The letters that make up the individual. E.g. TT or Tt. ▪ Phenotype: The physical characteristics of the particular trait. E.g. Tall or short. ▪ Dominant trait: Signified by capital letter-E.g. T.

Explanation:

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The major explanation for the differences in the terrestrial biomes of Australia and Bolivia-Argentina is the fact that the two regions lie on different sides of the Tropic of Capricorn. In Australia, the region lies predominantly south of the Tropic of Capricorn.

The major explanation for the differences in the terrestrial biomes of Australia and Bolivia-Argentina is the fact that the two regions lie on different sides of the Tropic of Capricorn. In Australia, the region lies predominantly south of the Tropic of Capricorn. As a result, most of the continent is subtropical desert, with only the coastal areas and a few scattered mountain ranges receiving sufficient rainfall to sustain temperate forests, woodlands, and grasslands. Bolivia and Argentina, on the other hand, lie predominantly north of the Tropic of Capricorn. This region receives significant rainfall, and the vast majority of the land area is composed of tropical and woodland biomes. These biomes are characterized by dense vegetation cover and high biodiversity, making them suitable habitats for a wide range of plant and animal species. A biome is a group of ecosystems that have similar characteristics, including the types of organisms that live there, their habitats, and their physical environment.

Biomes are defined by their climate, soil type, topography, and other physical factors, which influence the types of vegetation that can grow and the animals that can survive in the area. The differences in the terrestrial biomes of Australia and Bolivia-Argentina are largely due to the fact that these regions are located in different parts of the world, with different climatic conditions and physical characteristics that influence the types of vegetation that can grow and the animals that can survive there. Australia is located in the Southern Hemisphere and is mostly covered by a subtropical desert biome. Bolivia and Argentina are located in the Southern Hemisphere, but they are much closer to the equator than Australia. This means that they receive more sunlight and heat, which results in more rainfall and a more humid climate. As a result, Bolivia and Argentina have vast, lush tropical and woodland areas, which are home to a wide range of plant and animal species. In contrast, Australia's desert biome is sparsely populated by a few hardy plant and animal species that are adapted to survive in this harsh, arid environment.

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The frequency of the heterozygous genotype in this population is 0.455, or 45.5%. This means that almost half of the individuals in the population are carriers of the recessive allele and could potentially pass it on to their offspring.

To calculate the frequency of the heterozygous genotype in a population at Hardy-Weinberg equilibrium, we need to use the equation p^2 + 2pq + q^2 = 1, where p and q represent the frequency of the dominant and recessive alleles, respectively.

We know that the frequency of the homozygous recessive genotype (q^2) is 0.4225, so we can take the square root of this value to get q, which is 0.65 (rounded to two decimal places). Since q represents the frequency of the recessive allele, p must be 1 - q, which is 0.35.

Now, we can use the equation to calculate the frequency of the heterozygous genotype:

2pq = 2 x 0.35 x 0.65 = 0.455 (rounded to three decimal places)

Therefore, the frequency of the heterozygous genotype in this population is 0.455, or 45.5%. This means that almost half of the individuals in the population are carriers of the recessive allele and could potentially pass it on to their offspring.

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1. Retrotransposons include SINEs and LINEs (Option B and C).

2. Hybridization techniques include Southern blot and Northern blot (Option C).

3. Cancer is often the result of the activation of oncogenes and the inactivation of tumor-suppressor genes (Option A).

Retrotrаnsposons аre evolutionаrily widespreаd genetic elements thаt replicаte through reverse trаnscription of аn RNА copy аnd integrаte the product DNА into new sites in the host genome. They comprise significаnt frаctions of metаzoаn genomes. Among VNTRs, SINEs, LINEs, and STRs, retrotransposons are referred to as SINEs (Short Interspersed Nuclear Elements) and LINEs (Long Interspersed Nuclear Elements).

The technique that relies on the hybridization of complementary nucleic acid (DNA or RNA) is both Southern blot (for DNA) and Northern blot (for RNA), so the correct answer is A+B (Option C). Cancer is often the result of the activation of oncogenes and the inactivation of tumor-suppressor genes.

Thus, the correct answers are

1. B and C.

2. C.

3. A.

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Answer: DNA Helicase is the enzyme that is added as the helix unwinds or ''unzips'' Into short segments of RNA.

Explanation: I really hope this helps out. PLEASE MARK BRAINLEST

Answer:

Groundwater

Explanation:

The factories mostly need large quantities of water to carry out their production precesses, however, as well as they need natural recources for their operation, they also dispose of them and a large part of the environmental contamination is due to the release of substances emitted by these. It´s very easy for toxic waste to contaminate rivers, lakes and aceans. Groundwater on the other hand is more complicated to contaminate because it´s found in aquifers below the surface of the arth, making by these factories to reach these places; althouh not impossible.

The sequence of nucleotides that represents the primer sequence is  5' ACGUUAGG3'.

A primer for RNA is added. In RNA, U's are found where T's would typically be. The template strand is complementary to the RNA primer. T and U are complementary to A, but C and G are mutually exclusive. The complementary primer for the template strand from the second T from the 3' end is 5'-ACGUUAGG-3'.

A primer is a short nucleic acid sequence that acts as the starting point for the production of DNA. Primers are made of short RNA strands in living things. Primase, a subtype of RNA polymerase, is an enzyme that produces a primer before DNA replication can occur.

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By following this improvement plan,one can aim to develop and enhance my empathy as a leadership value over the next year.

One leadership value I would like to develop further over the course of the next year is empathy. Empathy is a crucial leadership trait that involves understanding and sharing the feelings of others. It allows leaders to connect with their team members on a deeper level, foster positive relationships, and create a supportive work environment.

Improvement Plan for Developing Empathy:

By following this improvement plan,one can aim to develop and enhance my empathy as a leadership value over the next year.

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The leukocyte eosinophils increases in number during parasitic infections.

What do you mean by infections?

Infections are diseases caused by organisms such as bacteria, viruses, fungi, and parasites. These organisms can enter the body through the skin, nose, eyes, or mouth and cause a range of symptoms, including fever, coughing, nausea, and vomiting.

Eosinophils are a type of white blood cell that play an important role in the body's immune response. When the body is infected with parasites, these cells increase in number to help fight the infection. They do this by releasing substances that attack and destroy parasites and other foreign invaders, as well as by helping to alert other parts of the immune system to the presence of the infection.

Hence, option A is correct.

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The given statement "according to the functionalist perspective, society defines gender inequality as a functional necessity" is false.

According to the functionalist perspective, gender inequality is not seen as a functional necessity. Functionalism focuses on the idea that different parts of society work together to maintain social order and stability. However, functionalism does not assert that gender inequality is necessary or beneficial for society.

Instead, it acknowledges that gender roles and inequalities exist but may attribute them to traditional social structures or cultural norms rather than considering them as functional necessities. Functionalists may view gender roles as serving certain functions within a society, but they do not necessarily argue that gender inequality is essential or beneficial for society as a whole.

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Although the landscape shows a certain ability to persist, underground mining activity has caused some effects such as ground fissures (cracking), disturbance of the vegetation community and damage to strata.

The given statement is TRUE. A foundation for the conservation and protection of threatened species and endangered species, as well as their habitats, both domestically and overseas, is provided under the Endangered Species Act of 1973.

In accordance with ESA, critical habitat must be identified and its removal is forbidden. The Endangered Species Act establishes protections for fish, mammals, and plants that are categorized as threatened or endangered. It allows for the addition and deletion of species from the list of threatened and endangered species as well as the creation and implementation of recovery plans. A threatened species is one that "is likely to become an endangered species within the foreseeable future throughout all or a considerable portion of its range," according to the ESA.

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A geneticist would typically provide information and explanations to parents regarding the appearance of their child based on the genetic factors that contribute to physical traits.

They would likely discuss the principles of inheritance and how certain traits are passed down from parents to offspring. The geneticist might explain that physical appearance is influenced by a combination of genetic factors inherited from both parents. They would clarify that specific traits, such as eye color, hair color, facial features, and others, are determined by a complex interplay of multiple genes. The geneticist might also mention that some traits follow simple Mendelian inheritance patterns, where a single gene may have a dominant or recessive effect. In these cases, the geneticist could explain the likelihood of the child inheriting certain traits based on the genotypes of the parents.

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Answer:

Inflammation is always accompanied by infection.

Infection is not accompanied by inflammation.

Explanation:

Infection refers to the invasion of a virus pathogen within the body that can cause a disease. On the other hand, inflammation is the protective response of the body against the infection.

Inflammation is not always accompanied by infection.

Infection is usually accompanied by inflammation.

Answer:

Niche

Explanation:

Answer:

iodine or methalyne?

Explanation:

Answer: i uasally dont answer real questions but biology is my favorite, its a, interphase

Explanation:

Answer:

D- Anaphase

Explanation:

Stage of mitosis after the process of metaphase, when replicated chromosomes are split and the newly-copied chromosomes.

A "pathological" fractur occurs when a weakened bone breaks under normal strain.

A pathological fracture occurs when a bone breaks under normal strain or with minimal force due to pre-existing weakness or disease within the bone. Unlike traumatic fractures that occur due to an injury or excessive force, pathological fractures are the result of an underlying condition that compromises the structural integrity of the bone.

These conditions may include osteoporosis, bone tumors, infections, or other bone diseases. The weakened bone is more susceptible to fractures, even with routine activities or minimal trauma, leading to a pathological fracture.

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If two reactants are added together with an energy of 1350 kJ mol, then we need to compare this energy with the activation energy of the reaction. If the activation energy of the reaction is lower than the energy supplied to the system, then a reaction will occur. Otherwise, the reaction will not occur.

In order for a chemical reaction to occur, the energy of the reactants must be increased to a level where the reactants are transformed into products. This energy level is known as the activation energy of the reaction. Once the activation energy is reached, the reaction proceeds spontaneously. If the energy of the reactants is lower than the activation energy, then the reaction will not occur.

Therefore, we can conclude that the reaction will occur if the activation energy of the reaction is less than the energy supplied to the system (1350 kJ mol).

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Answer:

The heart has four chambers: two atria and two ventricles.

Explanation:

The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.

Answer:

The four chambers of the heart are the Right atrium,Left atrium,Right ventricle and Left ventricle.

Explanation:

Have a great day♡

Answer:

white cells

Explanation:

False.

Big leaf maple trees, like other vascular plants, primarily absorb water through their roots. The roots of the tree have specialized structures called root hairs that increase the surface area for water absorption. The water is then transported through the xylem vessels, which are found in the stem and branches of the tree, up to the leaves.

The main function of the leaves in photosynthesis is to capture sunlight and carry out the process of converting light energy into chemical energy. The leaves have small openings called stomata, which allow for the exchange of gases, including the uptake of carbon dioxide and the release of oxygen. However, the absorption of water primarily occurs through the roots, not the leaves.

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Answer:

Lucy cheering, filled with hope Peter sulking like a mope Handsome Howard is the hero Pesty Peter is the zero

A major determinant of the resting membrane potential necessary for the transmission of nerve impulses is b. The ratio between Intracellular and extracellular K+.

This ratio is important for nerve impulse transmission and conduction, maintaining normal cardiac rhythms, and skeletal and smooth muscle contraction.

According to the Nernst relationship, the membrane potential required to maintain electrochemical equilibrium (EK) would be less negative if the outside K+ concentration were increased from 4 to 40 mM. This is because there would be less of a chemical gradient driving K+ out of the cell.

Due to the presence of more potassium (K+) ions than sodium (Na+) ions, the cell membrane of a neuron is said to be polarized with a net negative charge within at resting potential (absence of stimulus).

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(complete question)

A major determinant of the resting membrane potential necessary for the transmission of nerve impulses is the ratio between:

a.

Intracellular and extracellular Na+

b.

Intracellular and extracellular K+

c.

Intracellular Na+ and extracellular K+

d.

Intracellular K+ and extracellular Na+

Answer:

At the base of the pyramid are the producers, who use photosynthesis or chemosynthesis to make their own food. Herbivores or primary consumers, make up the second level. Secondary and tertiary consumers, omnivores and carnivores, follow in the subsequent sections of the pyramid.

Explanation:

Answer:

3,4,7

Explanation:

Elements present in a group has the same valence.

Elements present in a group has identical chemical properties but vary in physical properties.

The vertical column of elements on groups are numbered 1-8

The sizes of the left and right arrows should be the same.

In the game of tug-of-war, the sizes of the left and right arrows represent the relative strengths of the blue team and the red team. If the blue team is stronger and pulling harder, the size of the left arrow would be larger than the size of the right arrow.

Conversely, if the red team is stronger, the size of the right arrow would be larger than the size of the left arrow. The sizes of the arrows indicate the force exerted by each team and provide a visual representation of the balance of power in the game.

In tug-of-war, the objective is for one team to overpower the other and pull the rope towards their side. The larger the arrow representing a team's strength, the greater their force and ability to move the rope in their direction.

The size of the arrows serves as a visual cue for spectators to understand which team has the advantage at any given moment. It helps to create a sense of competition and excitement as the teams struggle to gain control of the rope.

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The correct option is C : Because they have a phosphate backbone, nucleic acids are sources of phosphorus in food. Nucleic acids include RNA and DNA.

Although "Diets rich in protein and calcium" were suggested as diets that would probably satisfy phosphorus needs, protein and calcium do not contain any phosphorus on their own. Protein-incorporating biological amino acids do not exist.

Many foods naturally contain phosphorus, but dairy, red meat, poultry, shellfish, legumes, and nuts are the largest sources.

These foods contain what is referred to as organic phosphorus. Animal foods absorb it more effectively than plant foods do.

A component of DNA, RNA, bones, and teeth is phosphorus [1]. Phosphorus, in the form of phospholipids, is also a constituent of ATP, the body's primary energy source, and the structure of cell membranes.

The body phosphorylates a large number of proteins and carbohydrates.

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