define chloroplast in short answer
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uses of poriferans are :

uses of cnidarians are :

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By comparing the DNA sequences of different species, scientists can identify shared ancestry and determine how closely related different species are. This enables them to make predictions about the evolutionary relationships between different species and to reconstruct phylogenies that extend back in time, providing insights into the evolutionary history of life on Earth. Molecular techniques, such as DNA sequencing, are particularly useful for this purpose because DNA is a stable, heritable molecule that is passed from one generation to the next.

Article states that "plants take up carbon dioxide from atmosphere and convert it into food."

1.This supports the law of conservation of matter, which states that matter cannot be created or destroyed, and can only be transformed from one form to another. In this case, carbon dioxide in atmosphere is transformed into organic matter in form of plant tissue.

2. According to the article, new research shows that plants are photosynthesizing 5% more in response to increased levels of CO2 in atmosphere.

3.The article states that 5% increase in photosynthetic rate translates to  additional 5 billion tons of carbon being removed from atmosphere each year.

4.Article suggests that increase in photosynthetic efficiency may be a result of plants having more CO2 available to them, which stimulates photosynthesis.

5.Laboratory procedure used to quantify photosynthetic efficiency involves measuring amount of chlorophyll fluorescence emitted by plant. This fluorescence provides a measure of amount of light energy absorbed by plant during photosynthesis.

6. Field procedure used to quantify photosynthetic efficiency involves measuring amount of carbon dioxide taken up by plant during photosynthesis. This is done by placing plant in sealed chamber and measuring change in carbon dioxide concentration over time.

7.The article suggests that potential "saturation" of carbon dioxide in the atmosphere could lead to a leveling off of increased photosynthetic rates observed in plants.

9.The potential "saturation" of carbon dioxide in atmosphere refers to point at which plants would no longer be able to increase photosynthetic rates in response to higher levels of atmospheric CO2. If ecological photosynthetic rates were to reach saturation, it would mean that plants would no longer be able to remove more carbon dioxide from atmosphere through photosynthesis.

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Answer: Cellular respiration breaks down glucose

Explanation:

Cellular respiration is a series of chemical reactions that break down glucose to produce ATP.

Answer:

YES

Explanation:

GASTON IS MEGGYS

Answer: Photoperiod controls many developmental responses in animals, plants and even fungi These mechanisms include the detection of the light signal in the leaves, the entrainment of circadian rhythms, and the production of a mobile signal which is transmitted throughout the plant.

Answer:

Viruses are not living organisms, and for that reason a bacteriophage virus does not feed on bacteria, but uses them to replicate, producing lysis of the bacterial cell in the process.

Explanation:

Viruses are structures formed by genetic material —DNA or RNA—covered by a protein envelope called the viral capsid. These structures do not perform the vital functions of a cell, so they are not considered living organisms.

A bacteriophage virus is characterized by using prokaryotic cells to replicate, destroying them in the process.

Viruses need a living cell to be able to replicate, so they introduce their viral genome into them to replace the genetic material of their nucleus and be able to multiply. They can do this:

Bacteriophage viruses do not eat the bacteria, they simply use it to reproduce, and then happens the lysis of the bacterial cell.

Answer:

Viruses are not living organisms, and for that reason a bacteriophage virus does not feed on bacteria, but uses them to replicate, producing lysis of the bacterial cell in the process.

Explanation:

The histology slide showing purple layers with the top layer having multiple flattened cells and nuclei present is likely showing stratified squamous epithelium.

This type of tissue is composed of multiple layers of cells, with the top layer consisting of flattened cells and nuclei present. Stratified squamous epithelium is found in areas of the body that are subject to mechanical stress, such as the skin, mouth, and esophagus. The multiple layers provide protection and the flattened cells on the surface allow for a smooth surface for substances to pass over. In summary, the histology slide you are describing is showing stratified squamous epithelium, a type of tissue that is composed of multiple layers of cells with the top layer consisting of flattened cells and nuclei present. This tissue is found in areas of the body that are subject to mechanical stress and provides protection and a smooth surface.

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Answer:

The answer is option B.

Nuclear fusion

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Answer:

What is the genotype of a carrier? The genotype of the carrier is Ff (one dominant non-disease gene, F, and one recessive, CF gene, f). Of course, any letter of the alphabet could be used as long as it is expressed as a heterozygous genotype.

Biologists define life as a characteristic of organisms that demonstrate growth, reproduction, adaptation, response to stimuli, and metabolism.

It is a complex system with a set of physical and chemical properties that distinguish living things from non-living things.Life on Earth is thought to have emerged around 4 billion years ago, through a process known as abiogenesis or biopoesis.

The origin of life has been widely debated over the years, but the leading scientific theory suggests that life emerged spontaneously from non-living matter in the form of a chemical reaction.There are two leading hypotheses about the origin of life on Earth: the "RNA World" hypothesis and the "Metabolism First" hypothesis.

Both theories rely on complex chemical processes that took place under certain environmental conditions, such as the presence of water, heat, and the presence of certain chemicals and minerals.Based on the available evidence, it seems that life emerged gradually over time through a series of chemical reactions.

These reactions led to the formation of simple organic molecules, which eventually combined to form more complex compounds such as amino acids and proteins. Eventually, these compounds came together to form the first living cells, marking the beginning of biological evolution.

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The complete subject in the sentence "The pressure of the ice combines with gravity's force" is "the pressure of the ice". The complete subject is the main noun or pronoun that the sentence is about, and it includes all of the words that describe or modify that noun or pronoun. Hence option D is correct.

The subject is "the pressure of the ice", which refers to the physical force exerted by the weight of the ice. The subject is modified by the prepositional phrase "of the ice", which provides additional information about the nature of the pressure.

The verb in the sentence is "combines", which describes the action of pressure and gravity coming together to create a certain effect. Finally, the subject is also connected to the object of the sentence, "gravity's force", through the preposition "with", which shows the relationship between the two.

Overall, the sentence describes how the pressure of the ice and gravity's force work together to create a particular effect, without specifying what that effect might be.

Hence option D is correct.

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Answer:

Some other types of Salmonella cause typhoid fever or ... Most people with Salmonella infection have diarrhea, fever, and ..

Explanation:

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A. Two populations transferring genes is gene flow

Gene flow has the effect of reducing genetic diversity among populations, inhibiting or delaying the development of populations in various geographic locations into distinct species of the disease.

The frequencies of alleles will fluctuate as a result of gene flow, the transfer of alleles caused by the movement of people or gametes across populations. Evolutionary change, which is frequent in natural populations, comes from deviation from any of these requirements.

Gene flow increases genetic variation when there is a continuum of alleles in the same way that a source of small-effect mutations would.

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Yes ,the answer which are chosen in the option  are correct.

a. Changes in trilobite morphology over time - Fossil record

b. Gill ridges in human and fish embryos - Homology

c. The similar shape of sharks and dolphins - Convergent evolution

d. Kale, broccoli, and cabbage - Selective breeding

e. Darwin's finches - Biogeography

f. Endemic island species - Biogeography

g. Recognizable, but specialized forelimb bones in different vertebrates - Homology

h. Different types of cattle - Selective breeding

i. Wings of butterflies and birds - Convergent evolution

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Answer/Explanation

China was divided into 23 provinces, 5 autonomous regions, 4 municipalities directly under the Central Government, and 2 special administrative regions, China is the world's third largest country, after Russia and Canada.

Mr Brown's blood type is AB and Mrs. Brown's Blood type is BO.

Based on the results of the punnet square, the possible blood types of Mr. and Mrs. Brown's offspring are the following: AB, BB, AO, and BO.

Volcanic eruptions has the release of volcanic gas and it can provoke climate changes that have a negative effect on the environment.

The volcanic gases are harmful for the environment, there is multiple substances in the volcanic gas, since water molecules (harmless), carbon dioxide, and surfur dioxide. When thr volcanic gases are realesed in the atmosphere it causes climate changes, such as increase the temperature, cause changes in the oceanic cycle, increase the levels of carbon dioxide, and so on. All that actions provoke changes and negative effects in the general environment, being more present in the closer vicinity of the eruption.

Okay. So considering vision, we could mention that retina is an inner structure in our eyes that allows us to perceive light through the incidence in it of the photonic rays from light sources or from objects which reflect it.

This is possible since the retina has a set of photoreceptors cells called cones (there're three types of them: reds, greens, and blues cones) and rods. These two differ from each other in the fact that the first ones are more abundant, and have no color sensibility, and the second ones are less abundant but have the capability to perceive color.

In the retina, there're other kinds of cells, like the ganglion ones, or the bipolar ones, and what happens in this process is that the ganglion cells receive information from bipolar cells, which are continually sending actions potentials throughout their axons in the vision process.

Answer:

Cork formation is a type of secondary growth that occurs in the stems and roots of woody plants. Gum formation, on the other hand, is a type of defense mechanism that occurs in response to injury or infection.

Explanation:

Answer:

736 kg

Explanation:

Answer:

Carbohydrates

Explanation:

Carbohydrates are sugars that come in 2 main forms – simple and complex. This is also referred to as simple sugars and starches.

The difference between a simple and complex carb is in how quickly it is digested and absorbed – as well as it’s chemical structure.

Most carbohydrates can be broken down by digestion into glucose.

Answer:

Carbohydrates

Explanation:

Monosaccharides,and disaccharides,the smallest carbohydrates are commonly called sugars

Answer: The concentration of sugar in solution D is 35%. Solution D is a hypertonic solution as the solute concentration is more than the potato cell concentration. Therefore, water will move into the cell to equalize the osmotic pressure gradient between the cell and the solution. Hence, strip D will swell.

Explanation:

Answer:

genetic drift

Explanation:

The newly isolated population of beetle would have very different allele frequencies than the main population because of genetic drift.

Genetic drift refers to a change in the frequencies of alleles in a population over generations brought about by pure chance. Genetic drift can cause a bottleneck or founder effect. A bottleneck effect is a temporary decrease in the genetic diversity of a population while the founder effect refers to a decrease in the genetic variability of a new population formed from a small number of individuals that get separated from a larger population.  

Hence, the newly formed population of beetles would have lower allele frequencies than the main population due to the founder effect brought about by genetic drift.

Answer:

the answer should  be b

Explanation:

Antinuclear antibodies are autoantibodies that bind to contents of the cell nucleus. In normal individuals, the immune system produces antibodies to foreign proteins but not to human proteins. In some cases, antibodies to human antigens are produced.

facts are

1. NUCLEAR POWER PLANTS PRODUCED 790 BILLION KILOWATT HOURS OF ELECTRICITY IN 2019.

2. NUCLEAR POWER PROVIDES 52% OF AMERICA’S CLEAN ENERGY.

3. NUCLEAR ENERGY IS THE MOST RELIABLE ENERGY SOURCE IN AMERICA

Answer:

The chocolate lover bought 6 boxes of chocolate, each containing 12 truffles

Explanation:

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Answer:

The chocolate lover bought 6 boxes of chocolate, each containing 12 truffles. How many truffles did she buy?

Answer:

A is the answer your welcome!

Incompletely dominance is a form of inheritance in which one allele is not completely expressed in a specific trait because of this pattern of inheritance with its paired allele. So, the explanation doesn't fit and A is incorrect.

Codominanceis a oform of inheritance in which both alleles are expressed, even if they are different, so both traits will appear. So, the explanation doesn't fit and B is incorrect too.

Multiple allele refers t when a population has more than two alleles o f the same gene. So, the explanation doesn't fit and D is incorrect too.

Genetic linkage occurs when two genes are lcated close to each othwer in a chromosome and are often inherited together, and that fits the definition that was given. Therefore, the correct answer is C. linked.