which animal phylum includes tapeworms and has members that are acoelomate and that exhibit bilateral symmetry?

Answer:

. Valora la importancia de los experimentos científicos en torno a la generación espon- tánea.

Explanat. Valora la importancia de los experimentos científicos en torno a la generación espon- tánea.

ion:

Answer:

ultraviolet, X-ray, and gamma-ray are some types of lights that are not absorbed by the human eye

Explanation:

Answer: becteria

Explanation:

pasteur diveded micro-organisms in to severel group of and control groups.

There are a number of strategies for managing and maintaining sustainable carrying capacity in a natural resource management.

Conservation: Conservation is the practice of protecting and preserving natural resources. This can be done through a variety of means, such as establishing protected areas, managing wildlife populations, and reducing pollution.

Sustainable use: Sustainable use is the use of natural resources in a way that meets the needs of the present without compromising the ability of future generations to meet their own needs. This can be done through a variety of means, such as using renewable resources, recycling and reusing materials, and minimizing waste.

Adaptation: Adaptation is the process of adjusting to changes in the environment. This can be done through a variety of means, such as developing new technologies, changing agricultural practices, and building infrastructure that is more resilient to climate change.

Find out more on natural resource management here: https://brainly.com/question/12458107

#SPJ1

Answer:

Specific body defence mechanism are resistance that are directed against only one specific invader while,

Non specific defence mechanism protects against any of an enormous range of possible dangers.

Explanation:

NON SPECIFIC DEFENCE MECHANISM are the first lines of general defence, they prevent entry and minimise further passage of microbes and other foreign material into the body. There are five main non specific defence mechanisms, these include:

--> defence at body surface

--> phagocytosis

--> natural antimicrobial substances

--> inflammatory response

--> immunological surveillance

Using PHAGOCYTOSIS as a named example of non specific defence mechanism. This involves phagocytes such as the macrophages and neutrophils which are able to trap any invading microbes either by engulfing them or by extending long pseudopodia towards them which grasp them and reel them in. These cells are NON SELECTIVE in their targets.

SPECIFIC BODY DEFENCE MECHANISM directs its actions against a specific invader. In addition immunological memory develops which confers long term immunity to specific infections. The immunity could be cell mediated or antibody mediated immunity.

Using CELL MEDIATED IMMUNITY as an example, Cytotoxic T-cells directly inactivate any cells carrying antigens. This means they are SELECTIVE in their targets. They attach themselves to the target cell and release powerful toxins, which are very effective because the two cells are so close together. This leads to destruction of abnormal body cells such as infected cells and cancer cells.

Answer:

Neurons are the largest cells.

Even among those, the ones which come out of the spine and reach every part of your body.

And every part of your body is attached to your spine with a single neuron, which is also a single cell.

So from the tips of your finger runs a single neuron which goes all the way to your spine, yes, a single cell which is few feet in length.

Explanation:

Answer:

Human canines are blunt and small in size, while chimps have big and sharp canines.

Explanation:

Chimps' mouths are larger than humans' mouths. Chimps have a flat palate; and bigger and sharper canines than humans. Also, there is a space between these teeth and the teeth at the front of the mouth. On the other hand, humans' mouths are smaller, which leads to smaller and less sharp canines, and there is no space between these teeth and the teeth at the front of the mouth.

Answer:

Humans are more circular and wide, while chimpanzees are longer and skinnier

Explanation:

I'm taking Ap Biology.

The Point of Origin of a muscle attaches to bone, cartilage, fascia, or other muscle PROXIMAL to the body center.

The origin of a muscle refers to the point of attachment of the muscle that is relatively fixed or immobile during contraction. It is typically the proximal attachment site where the muscle originates from a bone, cartilage, fascia, or another muscle. The origin provides stability and serves as the anchor for muscle movement. The size and location of the origin vary depending on the specific muscle and its function. Muscles can have multiple origins, such as in the case of the biceps brachii muscle in the upper arm. Understanding the origin of a muscle is crucial in studying its anatomy, physiology, and biomechanics.

Learn more about origin here;

https://brainly.com/question/22662174

#SPJ11

Answer:

Semiconservative replication describes the mechanism of DNA replication in all known cells. ... This process is known as semi-conservative replication because two copies of the original DNA molecule are produced, each copy conserving (replicating) the information from one half of the original DNA molecule.

A paracentric inversion is one whose breakpoints do not flank the centromere.

Inversions are a type of chromosomal mutation that occur when a segment of chromosome is flipped around 180 degrees. In a paracentric inversion, the inverted segment of chromosome does not include the centromere, which is the constricted region of the chromosome that plays a crucial role in cell division.

Paracentric inversions can lead to changes in gene expression and recombination, which can cause genetic disorders or chromosomal abnormalities. These inversions can also affect the stability of the chromosome during cell division, which can result in the loss or gain of genetic material.

In contrast, a pericentric inversion involves the inversion of a segment of chromosome that does include the centromere. This type of inversion can also lead to genetic disorders or chromosomal abnormalities due to changes in gene expression and recombination.

Therefore, the correct option is (5) paracentric.

To learn more about  paracentric inversion here

https://brainly.com/question/12276080

#SPJ1

Answer:

A) prokaryotic cell

Explanation:

Prokaryotic cells comprise bacteria and archaea.

I hope this helps.

Answer:

A valve is a device that opens and closes to control the flow of liquids or gases.

Explanation:

The phenomenon that is demonstrated in this example is adaptation to external stimuli. That is option C.

Adaptation is defined as the ability of an organism to adjust to its every changing environment in order to survive and reproduce.

From the example given in the question, the bacteria was exposed to a toxin in its environment but the bacteria was able to adapt through the production of an enzyme the neutralises the toxin.

The bacteria was able to produce the neutralising enzymes through activating an inducible operon that causes the transcription of the mRNA that codes for the enzyme.

Learn more about adaptation here;

https://brainly.com/question/25594630

#SPJ1

9:7 phenotypic ratios would be expected among the f2 progeny

A test cross is a technique used in genetics to investigate and collect potential genotypes and traits of offspring of organisms. An organism's genotype is its genetic make-up; it lists the alleles and genes that the particular organism possesses. The expression of genes and alleles in observable traits is referred to as the phenotype. Eye color, height, and even hair texture are examples of phenotypes. Through a test cross, genotypes may be used to determine the phenotypes of an organism's progeny and, in turn, determine the phenotypic ratio. The likelihood that a cross-breeding would produce a visible characteristic is known as the phenotypic ratio. Punnett Squares or a phenotypic ratio calculator will make determining phenotypic ratios the easiest.

To know more about phenotypic ratios refer to https://brainly.com/question/22108809

#SPJ4

9:7 phenotypic ratios would be expected among the f2 progeny of a dihybrid cross involving dominant and recessive alleles for two complementary genes.

When two complementary genes are interacted to produce a particular phenotype, it is considered a test cross. A test cross is a technique used in genetics to investigate and collect potential genotypes and traits of offspring of organisms. The expression of genes and alleles in observable traits is referred to as the phenotype. Eye color, height, and even hair texture are examples of phenotypes.

An organism's genotype is its genetic makeup; it lists the alleles and genes that the particular organism possesses. Through a test cross, genotypes may be used to determine the phenotypes of an organism's progeny and, in turn, determine the phenotypic ratio.

The likelihood that cross-breeding would produce a visible characteristic is known as the phenotypic ratio. Punnett Squares or a phenotypic ratio calculator will make determining phenotypic ratios the easiest.

To know more about phenotypic ratios refer to brainly.com/question/22108809

#SPJ4

Answer:

Positively charged.

Explanation:

An atom that has lost an electron is positively charged. When an atom loses an electron, it becomes positively charged because the number of protons in the nucleus now exceeds the number of electrons, resulting in a net positive charge. The other answer choices do not apply to an atom that has lost an electron.

Answer:

\/ \/ \/ (if this helps)

Explanation:

Genetic modification is the method of modifying an organism's genetic structure by using recombinant DNA (rDNA) technology. A gene from another animal is most commonly applied to the genome of an organism to give it a phenotype that is desired.

Enzymes are the biological catalysts. They are made up of proteins that have the catalytic activity. It is the result of enzymes that each reaction is accomplished within seconds inside the living organisms, which otherwise would have taken even days to finish up.

Substrate is the starting product in any chemical reaction. The enzymes acts upon the substrate, causes some changes in it and therefore forms the product.

To know more about enzymes and substrate, here

brainly.com/question/11370054

#SPJ1

Hurricanes produce high winds that are cabaple of topple trees and heavy rains that cause flooding. It can inundate environments, increasing the amount of salts and debris in soil. High concentrations of salt in soil can cause the mortality of some tree species, and if those species are dominant in a certain area that would highly affect all of the surroundings. Therefore, the two major causes of deforestation when a hurricane strikes are high winds and flooding, each one with its own consequences.

Answer:

The central cavity of a blood vessel is called the: Lumen.

Explanation:

please consider as brainlest

Areolar tissues are loose tissues that usually adhere to epithelia. Areolar tissues contain blood vessels(we know epithelial tissues don't have blood vessels). Their main role is to procure food for epithelial tissues.

Biotic factors in an ecosystem are the living organisms or the participants in the foob web. They count on each other for their survival. The biotic factors in the foob web provided are the producers, consumers and decomposers. Abiotic factors in an ecosystem are rocks, soil, and water that collaborate with biotic factors to provide them with the nutrients they needed to survive. Sunlight, air, soil, and minerals are also examples of abiotic factors. Sunlight gives energy so that plants may use them i order to grow. This ultimately holds up the whole community of an ecosystem. Air also connects with plants to help them grow by providing an origin of CO2 and other nutrients.

Answer:

The cell theory is a widely accepted explanation of the role of cells in living things. It is important because it lays the foundation for scientists' understanding of cells and sets the distinction between living and non-living things.

Cells are the basic unit (or building block) of life.2. All living things are made of cells.3. Cells come from other cells.

Explanation:

Answer:

For instance, prey species have defense adaptations that help them escape predation. These defenses may be mechanical, chemical, physical, or behavioral.

Explanation:

Other types of defense animals can develop are mechanical and chemical defences.

Defence mechanism are used by various animals to better adapt to their environment and escape from their predators.

The types of defense mechanism include:

Therefore, other types of defenses are mechanical and chemical defences.

Learn more about animal defense here:

https://brainly.com/question/23573204

The study of cre elements in different species has revealed that there can be significant variation in these elements without causing a significant change in overall gene expression patterns. This is a good example of cryptic genetic variation, which refers to genetic variation that is not readily apparent in an organism's phenotype.

In this case, the variation in cre elements may not affect the expression of the gene in question, but it could still have an impact on other traits or functions that are controlled by the same or related genes. This highlights the importance of considering genetic variation beyond just the genes themselves, and taking into account the regulatory elements that control their expression.

It also underscores the complexity of genetic interactions and the potential for epistasis, or the way in which different genes can interact with each other to produce a particular phenotype. Additionally, competitive binding may play a role in this context, as the variation in cre elements could impact the ability of regulatory proteins to bind to the DNA and control gene expression. Overall, this is a complex and nuanced issue that requires a long answer to fully unpack.

To know more about genes, refer

https://brainly.com/question/19947953

#SPJ11

(A) The answer to the initial value problem is given by \(\(y = (x^2 + 1)e^x\)\), where \(\(y' - y = 2xe^{2x}\)\) and \(\(y(0) = 1\)\).

(B) The resolution to the initial value problem can be expressed as \(\(y = \frac{2x - (\pi - 1)}{\sin(x)}\)\), where \(\(y' + \cot(x)y = 2\csc(x)\)\) and \(\(y\left(\frac{\pi}{2}\right) = 1\)\).

(A) To solve the initial value problem:

\(\[y' - y = 2xe^{2x}, \quad y(0) = 1\]\)

We can use an integrating factor method. To begin, let us express the equation in its standard form:

\(\[y' - y - 2xe^{2x} = 0\]\)

The integrating factor \(\(I(x)\)\) is given by \(\(I(x) = e^{\int -1 \, dx} = e^{-x}\)\).

To obtain the solution, apply the integrating factor to both sides of the equation and perform the multiplication.

\(\[e^{-x}(y' - y) - 2xe^{2x}e^{-x} = 0\]\)

This simplifies to:

\(\[e^{-x}y' - e^{-x}y - 2x = 0\]\)

Now, observe that the expression on the left-hand side represents the derivative of \(\((e^{-x}y)\)\) with respect to \(\(x\)\).

Using this observation, we can rewrite the equation as:

\(\[\frac{d}{dx}(e^{-x}y) - 2x = 0\]\)

Integrating both sides with respect to \(\(x\)\), we get:

\(\[e^{-x}y - \int 2x \, dx = C\]\)

where \(\(C\)\) is the constant of integration.

Integrating \(\(\int 2x \, dx\)\), we have:

\(\[e^{-x}y - x^2 + C = 0\]\)

To find the constant \(\(C\)\), we use the initial condition \(\(y(0) = 1\)\).

Substituting \(\(x = 0\)\) and \(\(y = 1\)\) into the equation, we get:

\(\[e^{0} \cdot 1 - 0^2 + C = 0\]\)

\(\[1 + C = 0\]\)

\(\[C = -1\]\)

Substituting \(\(C = -1\)\) back into the equation, we have:

\(\[e^{-x}y - x^2 - 1 = 0\]\)

Finally, we can solve for \(\(y\)\) by isolating it:

\(\[e^{-x}y = x^2 + 1\]\)

\(\[y = (x^2 + 1)e^x\]\)

(B) To solve the initial value problem:

\(\[y' + \cot(x)y = 2\csc(x), \quad y\left(\frac{\pi}{2}\right) = 1\]\)

We can use an integrating factor method. To begin, we will rewrite the equation in standard form:

\(\[y' + \cot(x)y - 2\csc(x) = 0\]\)

The integrating factor \(\(I(x)\)\) is given by:

\(\(I(x) = e^{\int \cot(x) \, dx} = e^{\ln(\sin(x))} = \sin(x)\).\)

Apply the integrating factor to both sides of the equation and perform the multiplication.

\(\[\sin(x)(y' + \cot(x)y) - 2\csc(x)\sin(x) = 0\]\)

This simplifies to:

\(\[\sin(x)y' + \cos(x)y - 2 = 0\]\)

Now, observe that the expression on the left-hand side represents the derivative of \(\((\sin(x)y)\)\) with respect to \(\(x\)\). Using this observation, we can rewrite the equation as:

\(\[\frac{d}{dx}(\sin(x)y) - 2 = 0\]\)

Integrating both sides with respect to \(\(x\)\), we get:

\(\[\sin(x)y -\)\(\int 2 \, dx = C\]\)

where \(\(C\)\) is the constant of integration. Integrating \(\(\int 2 \, dx\)\), we have:

\(\[\sin(x)y - 2x + C = 0\]\)

To find the constant \(\(C\)\), we use the initial condition \(\(y\left(\frac{\pi}{2}\right) = 1\).\)

Substituting \(\(x = \frac{\pi}{2}\)\) and \(\(y = 1\)\) into the equation, we get:

\(\[\sin\left(\frac{\pi}{2}\right) \cdot 1 - 2\left(\frac{\pi}{2}\right) + C = 0\]\)

\(\[1 - \pi + C = 0\]\)

\(\[C = \pi - 1\]\)

Substituting \(\(C = \pi - 1\)\) back into the equation, we have:

\(\[\sin(x)y - 2x + (\pi - 1) = 0\]\)

Finally, we can solve for \(\(y\)\) by isolating it:

\(\[\sin(x)y = 2x - (\pi - 1)\]\)

\(\[y = \frac{2x - (\pi - 1)}{\sin(x)}\]\)

\(\(y = \frac{2x - (\pi - 1)}{\sin(x)}\).\)

To learn more about initial value problem follow the link

https://brainly.com/question/30503609

#SPJ4

The complete question is:

Find The Solution Of The Given Initial Value Problem:

(A) \(\(y' - y = 2xe^{2x}\)\), and \(\(y(0) = 1\)\)

(B) \(\(y' + \cot(x)y = 2\csc(x)\)\), and \(\(y\left(\frac{\pi}{2}\right) = 1\)\)

Answer: C,D,E

Explanation:

I just did it on USATestprep

Answer:

bit complicate uno