Archaebacteria and Eubacteria are the only living organisms that do not have?

The name "comb jellies" for members of the phylum Ctenophora refers to the rows of cilia or comb-like structures they possess, which they use for locomotion.

These cilia create a shimmering effect, resembling the movement of combs, as the ctenophores swim through the water. This characteristic led to the common name "comb jellies" because of their jelly-like appearance and the comb-like pattern produced by their cilia. The name effectively captures their unique physical features and distinctive swimming motion.The name "comb jellies" for members of the phylum Ctenophora is derived from their physical characteristics and mode of locomotion. Ctenophores have rows of cilia or comb-like structures known as "ctenes" that run along their bodies. These cilia are densely packed and beat in coordinated waves, creating a shimmering effect as the ctenophores move through the water. This shimmering movement resembles the motion of a comb being dragged through the hair. The combination of their gelatinous appearance and the comb-like pattern produced by their cilia led to the name "comb jellies," which effectively describes their unique features and swimming behavior.

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Explanation:

Benthos are the organisms that live at the bottom of the Chesapeake Bay and its streams and rivers. The word benthos comes from a Greek term meaning “depths of the sea.” Benthic communities are complex and include a wide range of animals, plants and bacteria from all levels of the food web.

The two-point discrimination threshold refers to the ability to distinguish two distinct points of contact on the skin as separate stimuli.

The threshold varies across different areas of the body, with some regions having a shorter threshold than others.

The body parts with the shortest two-point discrimination threshold are typically the areas with the highest density of sensory receptors, such as the fingertips and lips. These areas have a greater concentration of mechanoreceptors, which are responsible for detecting fine touch and spatial discrimination. The fingertips, in particular, have highly sensitive tactile abilities due to the presence of numerous sensory receptors, allowing for precise discrimination between two closely spaced points.

In contrast, areas with thicker skin, fewer sensory receptors, or a different distribution of receptors may have a longer two-point discrimination threshold. Examples include the back, forearm, or lower leg, where the ability to discern two separate points of contact is generally less refined compared to the fingertips or lips.

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Answer:

The human genome is the complete set of nucleic acid sequences for humans, encoded as DNA within the 23 chromosome pairs in cell nuclei and in a small DNA molecule found within individual mitochondria. These are usually treated separately as the nuclear genome, and the mitochondrial genome.

Answer:

if it had excess nutrients

Explanation:

it increases the amount of plant and algae growth

Answer:

d

Explanation:

I believe because it's a zone if it's not correct then I am not sure

Answer:

Explanation:

Plz help lol. Identify and describe 2 things that could explain why glucose and complex carbohydates are not disappearing in M’Kenna’s digestive...

In the intestinal lining of a disorder blocks mitotic cell division in all cells of the body, the dying cells will not be replaced. New ones will not form.

Cytoplasmic division to form two new cells coincides with the final stage of mitosis. Depending on the cell it starts either in anaphase or telophase and ends shortly after telophase. Mitosis is the type of cell division involved in body growth and repair while meiosis is the type of cell division that results in the formation of gametes.

When cell division stops no new cells are formed and no genetic transfer to the organism occurs. This leads to the mass extinction of organisms. During prophase and metaphase of mitosis, chromosomes are organized in two rows or two chromatids. At the final stage of mitosis telophase, the two sets of chromosomes reach the poles of the cell. This is followed by the regeneration of the nuclear envelope.

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Answer:

Terrestial Planet

Explanation:

Earth has a rocky surface like other planets such as Mars, Mercury, and Venus.

Answer: I think it’s c

Explanation:

Answer:

D.) Decreased aid from other countries

Explanation:

Got it right on Edge

Answer:

alleles that are carried on X and Y chromosomes

Explanation:

Edge

The frequency of the m allele in the population is 0.4679.

The frequency of the m allele can be calculated by using the Hardy-Weinberg equation as follows:

p² + 2pq + q² = 1; where p is the frequency of the m allele and q is the frequency of the n allele.

From the given information, we know that:

m = 121 + 0.5(327) = 284n = 262 + 0.5(327) = 408

The total number of alleles in the population is:2(121 + 327 + 262) = 1420

Using the above equation, we can write:

284/1420 = p² + 0.5(327/1420)p² + 0.23098591 = 0.20000000 + 0.23098591p² = 0.01901409p = 0.13794034

Therefore, the frequency of the m allele in the population is:

p = 0.1379 (rounded to four decimal digits)p = 0.4679.

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The evidence from the fossil record show important events and species in the appropriate geologic era.

A species is a taxonomic rank in biology that serves as the basis for classification and as a gauge of an organism's biodiversity. A species is generally defined as the largest collection of sexually reproducing organisms, where any two individuals of the appropriate sexes or mating types can produce fertile offspring. Another way to distinguish between species is through the karyotype, DNA sequence, anatomy, behavior, and ecological niche. Paleontologists also use the chrono species theory because it is unable to analyze fossil reproduction.

There are between 8 and 8.7 million different species of eukaryotes, according to the most recent reliable estimate. In contrast, just 14% of these have been described by 2011.

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Answer:

biko share us you questions in English

Answer: The kangaroo is a herbivore , the ants are scavengers and what I think is an ant eater is the carnivore.

Explanation:

The connection between an ethnic group's cooking practices, high salt consumption, and the increased risk of blood pressure and strokes is Salt contains sodium, which plays a vital role in maintaining the balance of fluids in our body.

Consuming a large amount of salt leads to an increased intake of sodium, which can have adverse effects on our health.

When an ethnic group consistently uses a high amount of salt in their cooking, the community is exposed to a higher risk of developing health issues related to elevated sodium intake. One major concern is increased blood pressure, or hypertension. High sodium levels in the body cause the retention of more water, resulting in an increase in blood volume. This leads to a rise in blood pressure, putting more strain on the arteries and heart.

Consistently high blood pressure can damage blood vessels, making them more prone to forming blood clots or rupturing. This increased vulnerability of blood vessels, combined with hypertension, raises the risk of strokes within the ethnic group. A stroke occurs when the blood supply to a part of the brain is interrupted or reduced, either due to a blood clot or a ruptured blood vessel, resulting in brain tissue damage.

In conclusion, an ethnic group's practice of cooking with a large amount of salt can be associated with increased blood pressure and a higher risk of strokes, mainly due to the elevated sodium intake that leads to hypertension and damage to blood vessels. To reduce these health risks, it's essential to promote the consumption of a balanced diet with an appropriate level of sodium.

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Answer:

When plants absorb water from the ground they filter out many impurities, and you can extract this clean water from them. Plants transpire water, meaning that water vapor evaporates from the leaves, and this water can be collected.

Answer:

transpiration is the answer

The term that means tumor of the gland that secretes earwax is ceruminoma. Ceruminoma is the term that means tumor of the gland that secretes earwax. It is also known as aural polyp and can cause complete obstruction of the ear canal leading to hearing loss.

Ceruminomas are rare tumors that are usually benign and are typically located in the ear canal. The exact cause of ceruminomas is unknown, but they are thought to arise from the ceruminous glands that secrete earwax. Another term for ceruminoma is ceruminous gland adenoma.

Ceruminous gland adenomas are more common in dogs than in humans. In humans, ceruminomas are usually found in the ear canal, but they can also occur in the parotid gland. A ceruminous adenoma is a benign glandular neoplasm which arises from the ceruminous glands located within the external auditory canal.

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Answer:

See explanation

Explanation:

Fossil records contain an extensive detail of the evolution of various species on earth which have been preserved in the remains of these organisms or imprints that organisms that existed long ago must have left  in sedimentary rocks.

Fossil records basically tell us about the past. They tell us about the species that once existed on earth. They also tell us how long these species existed and how the were related to other species.

This information help us to work out how these organisms lived and the environment where they lived.

Answer: B

Species remain the same over time.

Explanation:

Answer:

plants

Explanation:

hope this helps:))))))

Answer:

a maple tree

Explanation:

hope this is the answer to your question.

One can draw the conclusion that enzyme lowers the activation energy of reactants, increasing the rates of reactions.

Reactants need to summon the activation energy in order to transform into products.

Biochemical catalysts include enzymes. The activation energy of reactions is reduced by catalysts. A reaction will proceed more quickly the lower its activation energy. As a result, enzymes reduce activation energy to speed up reactions.

Enzymes are catalysts, so they have an impact on activation energy by lowering the amount of activation energy required, enabling chemical reactions to occur or proceed more quickly. It has no impact on how much energy is released during the reaction.

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A student is having a hard time telling the difference between a parrot and a toucan. The student can use these mediums: audio recording, map, and photo.

Audio recording: Parrots make a lot of sound, and usually they sound like a person clicking their tongue. Toucans don`t make as much noise as parrots, and if they do, they sound like a frog croaking. So, an audio recording of these different calls can help him tell the difference between the two birds.

Map: Parrots and toucans live in different parts of the world.Parrots are widely distributed birds that live in the tropics of almost every continent. They are determined in Asia, Australia, Africa, Central America, and South America. Toucans have a miles smaller distribution than parrots. These birds are found only in Central and South America. They live almost exclusively in tropical forests and rainforests.

Photo: Using pictures, students can tell the difference between a parrot and a toucan. These two birds of hers differ greatly in their beaks. Most toucans have bodies the size of crows and large beaks that are half their length. Parrots generally have the same proportions regardless of size, but are much more variable in size.

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Answer:

Audio Recording

Explanation:

i would think photo because they look nothing alike but i guess audio recording since they sound different

Answer:

The shoot system generally grows above ground, where it absorbs the light needed for photosynthesis. The root system, which supports the plants and absorbs water and minerals, is usually underground.

Answer:

Don't know the answer but here is the definition

Explanation:

Evolution is the change in the inherited traits of a population through successive generations.

Exposing cells to colchicine during meiosis II would most likely result in the production of cells with an abnormal number of chromosomes, also known as aneuploidy.

This is because colchicine prevents the separation of chromosomes during cell division, leading to the formation of cells with more than the normal number of chromosomes. Additionally, if the organism has two sets of homologous chromosomes that are not identical, the colchicine would cause a random assortment of chromosomes, resulting in the formation of cells with various abnormal chromosome numbers. Meiosis is a type of cell division that occurs in organisms that sexually reproduce. The process of meiosis reduces the number of chromosomes in the parent cell by half, creating four genetically diverse daughter cells, called haploid cells.

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