which is true of ribosomes? choose one: a special class of ribosomes attached to the er membrane translates the proteins destined for that organelle. a common pool of ribosomes is used to synthesize both cytosolic proteins and proteins destined for the er. polyribosomes translate only those proteins that have an er signal sequence. all ribosomes are attached to the er when they begin synthesizing a protein. polyribosomes translate only cytosolic proteins.

Answer:

D.Children of congressional leaders.

Explanation:

The leader of the party that owns a majority of seats in either house of Congress or of a state legislature. Elected by their own party councils, majority leaders act as chief spokespersons and tacticians for their parties. The principal functions of a majority leader normally associate to floor duties. The majority leader is the lead speaker for the majority party during floor discussions, exhibits the calendar and supports the president or speaker with program advancement, policy formation, and policy decisions.

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Langerhans cells are dendritic cells found in the skin that are a crucial element of the body's immune system. These cells are positioned in the stratum spinosum layer of the epidermis.

This is the thickest layer of the epidermis. Langerhans cells are named after the German physician Paul Langerhans, who first observed them in human skin in 1868. The Langerhans cell is a part of the skin's immune defenses and functions to alert the immune system to the presence of foreign invaders, such as bacteria and viruses, as well as malignant cells.

They are responsible for activating other immune cells such as T-cells and B-cells and are important in the development of the immune response against pathogens that have invaded the skin.Langerhans cells can recognize and capture antigens, break them down, and then display fragments of the antigen on their surface.

These fragments are then recognized by other immune cells, triggering an immune response. Thus, Langerhans cells play a crucial role in skin immunity by serving as the first line of defense against invading pathogens.

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Bacteria is likely to have the least non-coding DNA.

Non-coding DNA refers to the regions of DNA that do not code for proteins. Bacteria have smaller genomes compared to eukaryotic organisms such as humans, plants, and animals. Therefore, they have less non-coding DNA as well. In contrast, humans, plants, and animals have larger genomes, which results in a higher percentage of non-coding DNA.

Bacteria are likely to have the least non-coding DNA because they have smaller, more compact genomes than humans, plants, and animals. Non-coding DNA regions are less important for bacterial survival and reproduction, so they typically have less non-coding DNA than other organisms.

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Features such as high rates of oxygen metabolism, capsules, and leghemoglobin are associated with the use of nitrogenase because they help protect and support the enzyme's function.

Nitrogenase is an oxygen-sensitive enzyme responsible for the biological nitrogen fixation process, converting atmospheric nitrogen into ammonia for use by plants. High rates of oxygen metabolism create a low-oxygen environment within nitrogen-fixing organisms, ensuring that nitrogenase remains active and functional. Capsules provide a physical barrier around nitrogen-fixing bacteria, further protecting the enzyme from oxygen exposure.

Leghemoglobin, found in the root nodules of legume plants, helps maintain low oxygen concentrations by binding to oxygen and facilitating its removal from the environment around nitrogenase.So, these features such as high rates of oxygen metabolism, capsules, and leghemoglobin collectively contribute to a more favorable environment for nitrogenase to function efficiently and effectively, playing a crucial role in the overall nitrogen fixation process that benefits plant growth and productivity.

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Answer:

The atmosphere provides the geosphere with heat an energy needed for rock breakdown and erosion. The geosphere, in turn reflects the sun's energy back into the atmosphere. The biosphere receives gases, heat, and sunlight (energy) from the atmosphere. It receives water from the hydro sphere and living medium from the geoshere.

Answer:

The major challenges facing the nuclear industry include ensuring power plant safety, protecting reactors from natural disasters and external aggression, and finding effective solutions for long-term waste management.

Explanation:

Answer:

The major challenges facing the nuclear industry include ensuring power plant safety, protecting reactors from natural disasters and external aggression, and finding effective solutions for long-term waste management.

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Fish will eat tadpoles if they can get to them. The only way to stop them would be to give the tadpoles a space that the fish can't get to, like a shallow area with a barrier (plastic mesh would work but make sure the fish can't get caught in it) or lots of plants, or make a separate wildlife pond.

If tadpoles are in an area where there is a lot of plants in the water it would be much harder for fish to get to them.

Answer:

do not have a nucleus is the answer to the second one

small DNA floats freely in the membrane

Pedigrees can be used to follow gene transmition through generations. In this example, we are tracking the recessive allele that codes for albinism. Two options: 1) Jack is carrier, 2) expresses albinism. Pedigree in the attached files.

A Pedigree is the representation of a family's history. This graph is used to track a trait through different generations, and analyze the inheritance pattern of a particular gene and its expression.

It is a tool used to understand how genes are transmitted from the parental generation to the descendants, and what are the probabilities of  inheriting them.

Pedigree interpretation.

→ Individuals are represented with geometrical figures.

→ Males are squares

→ Females are circles

→ Healthy/normal/not affected  individuals are represented with empty figures

→ Affected/mutated individuals are represented with solid black figures

→ Each file is represented with a roman number, indicating the Generation.

In our pedigree, albinism is represented by solid figures.

Because nothing is said about Jack's genotype or phenotype, there are two possible options for this pedigree.

Option 1: Jack is heterozygous (Aa).

In this case, Jack and Maya can transmit either a dominant or a recessive allele to their children.

Option 2: Jack is homozygous recessive (aa)

In this case, Jack can only transmit the recessive allele, while Maya can transmit either the dominant or the recessive allele.

In both cases, Veronica received the recessive allele from both her parents.

You will find the pedigree in the attched files

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The table is an illustration of two-way table, and the value of the cost to net benefit to subordinate male is 0.1

From the table, the Krakauer's formula for benefit (B) is:

B = Offspring per dominant male - Offspring per solo male

The question has missing parameters, so we make use of the following assumed values:

So, we have:

B = 7 - 2

B = 5

Using the assumed values, the value of the benefit is 5

The Krakauer's formula for cost (C) is:

C = Offspring per solo male - Offspring per subordinate male

Given that subordinate male never reproduce, the equation becomes

C = Offspring per solo male - 0

C = Offspring per solo male

Using the assumed value in (a), we have:

C = 2

Using the assumed values, the value of the cost to subordinate male is 2

The Krakauer's formula for this is:

Net Benefit = rB - C

Given that r = 0.42, the equation becomes

Net Benefit = 0.42 * 5 - 2

Evaluate

Net Benefit = 0.1

Using the assumed values, the value of the cost to net benefit to subordinate male is 0.1

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Regarding the protection of endangered species, there are generally two main points of view: conservation and utilitarianism.

Conservationists appreciate species and their right to exist. It promotes biodiversity and ecosystem preservation for their own sake, emphasising natural equilibrium and species interdependence. Conservationists say saving endangered animals helps the environment, science, and human ethics.

Protecting endangered species benefits society. Each species contributes to ecosystem health. Pollination, nitrogen cycling, and pest control are ecosystem services provided by biodiversity. Conserving endangered species can also lead to scientific and medical advances since nature gives vital resources and insights. Finally, ethics emphasise the value and preservation of our planet's unique biodiversity.

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Answer:

A high specific heat of a substance means that a large amount of heat is required to raise the temperature of the substance. ... Water covers around 70% of the Earth's surface and its high specific heat plays a very important role as it is able to absorb a lot of heat without a significant rise in the temperature.

Explanation:

Organism X has offspring that are not genetically diverse.

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Answer:B

Explanation:

Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth's protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun.

Answer: A

Answer:

The answer is FALSE

Explanation:

Im doing to same class

It's important to note that the distribution and organization of nerve fibers within the skin are complex and can vary among individuals. Additionally, other factors such as receptor types, nerve fiber diameter, and central processing also influence the overall sensation experienced.

As an AI text-based model, I'm unable to directly examine or view images. However, I can provide some general information regarding the impact of nerve fiber location on sensation in the skin.

The cutaneous innervation refers to the distribution of nerves throughout the skin, which allows for the perception of various sensations such as touch, pressure, temperature, and pain. The location of nerve fibers within the skin can have a significant impact on sensation in several ways:

1. Sensory Threshold: Different areas of the skin have varying densities of nerve endings, leading to variations in sensitivity. For example, areas with a high concentration of nerve fibers, such as the fingertips or lips, tend to have a lower sensory threshold, meaning they can detect even subtle stimuli.

2. Sensory Discrimination: Nerve fibers are responsible for transmitting signals related to different sensory modalities. In specific regions, such as the fingertips, the nerve fibers are densely packed and finely tuned, allowing for precise discrimination of tactile stimuli or small differences in texture.

3. Receptive Field Size: Nerve fibers have distinct receptive fields, which are the specific areas of the skin where stimulation activates a particular nerve ending. Receptive field sizes can vary depending on the location in the skin. Smaller receptive fields, found in areas like the fingertips, allow for more precise localization of touch.

4. Sensory Adaptation: Nerve fibers exhibit different levels of adaptation to prolonged or repetitive stimulation. Rapidly adapting fibers are more responsive to changes in stimuli, while slowly adapting fibers maintain their response over a prolonged period. This adaptation can affect how sensations are perceived in different areas of the skin.

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The answer is b. Echinoderms cannot perform ecdysis, which is the process of shedding their outer layer or exoskeleton. Echinoderms have an internal skeleton made up of calcium carbonate plates.

They display pentaradial symmetry, which means their body parts are arranged in a pattern of five around a central axis. Echinoderms are exclusively marine animals.
Echinoderms are marine animals (a), display pentaradial symmetry (c), and have an internal skeleton (d). However, they do not perform ecdysis, which is the process of shedding an outer layer, like in arthropods. Instead, echinoderms grow by adding new material to their internal skeleton.

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To answer this question we need to remember a little of the cell cycle and the cell division process. When cell division starts (Prophase) the DNA condensates and forms chromosomes, at this point DNA, has to be already duplicated because when acquires a condensed form it can't be replicated or transcribed. Therefore replication occurs before, this is during the S phase (synthesis) of the cell cycle, previous to any phase of mitosis and meiosis.

Answer:

No, the replication of DNA does not occur during anaphase. DNA replication occurs during the synthetic phase (S phase) of the Interphase.

Answer: Old rusted boat or stretching an elastic. If your good at math can you please help me and provide an explanation. Olivia has read 40 pages of a 70 page book, 60 pages of an 85 page book and 43 of a 65 page book. What is the percentage of pages Olivia has not read?

Explanation:

Answer:

1. The independent valiable is the answer

Make me the brainliest please

Answer:

No, it isn't

Explanation:

An invasive species is characterized by an organism's appearance in an area it is not a native of, with a high capacity of reproduction that will cause it to be a threat to native species in that area. A species of organism is tagged "invasive" if it is foreign to a region/location and possess a high reproductive rate that spreads fast and causes harm to other species.

Based on the analogy given in this question about the escape of a rattlesnake from a zoo, it cannot be ascertained that it is an example of invasive species. This is because rattlesnakes may be native to that area and possess a zero threat level to the environment in terms of high spreading rate.

Answer: decrease to it’s carrying capacity

Heat fixation should take place after the slide has been flooded with the primary stain and rinsed with distilled water during the capsular stain. Heat fixation helps to fix the bacterial cells to the slide, allowing them to withstand subsequent washing and staining steps.

The heat also aids in the penetration of the primary stain into the capsule, improving the staining results. The slide should be briefly heated by passing it over a flame several times, making sure not to overheat or burn the slide. After heat fixation, the slide should be allowed to cool before continuing with the staining process. Overall, heat fixation is an essential step in the capsular stain and should be performed carefully to ensure accurate results.

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Metabolic processes commonly used to identify bacteria is carbohydrate fermentation. Thus the answer is A.

The metabolic process commonly used to identify bacteria is carbohydrate fermentation (option A). Carbohydrate fermentation refers to the breakdown of carbohydrates by bacteria through enzymatic reactions, leading to the production of various metabolic byproducts.

These byproducts can be detected and used as identifying characteristics of specific bacterial species or groups. For example, the production of acids, gases, or specific organic compounds during carbohydrate fermentation can be determined using biochemical tests like the phenol red broth or the Methyl Red-Voges-Proskauer tests. These tests help differentiate bacteria based on their ability to ferment specific carbohydrates and the resulting metabolic products, aiding in bacterial identification and classification.

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Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.

In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.

Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.

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The absorption of ultraviolet (UV) light by DNA and RNA is important in the analysis of nucleic acids because the UV light causes the nucleic acids to fluoresce, allowing scientists to analyze the nucleic acid molecules in the sample.

By studying the wavelength of light that is emitted, scientists can determine the types of nucleotides present and how they are organized. This can be used to gain insights into gene expression, genetic mutations, and other aspects of the sample.

Ultraviolet light is absorbed by the nucleic acids due to the presence of double bonds in the nitrogenous base, which causes the bonds in the molecule to vibrate, and subsequently, the energy is lost. The amount of ultraviolet light absorbed by the DNA and RNA molecules is directly proportional to their concentration in a solution, allowing for the quantification of nucleic acids in a sample.

The ultraviolet spectrum of nucleic acids is unique in terms of its wavelength and shape, which allows for the determination of the purity and quality of DNA and RNA samples.

Any contaminants or impurities in the sample will absorb ultraviolet light in a different manner, which will result in a change in the absorption spectrum. Thus, the ultraviolet light absorption spectra can be used to identify contaminants and impurities in the nucleic acid samples.

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Answer:

glucocorticoids

Explanation:

The second answer from the top

As a result of their higher energy requirements compared to reptiles and amphibians of the same size, natural selection has favored the evolution of double circulation in birds and mammals. The right response in this case is option D.

The rigorous separation of oxygenated and deoxygenated blood is supported by double circulation. In order to ensure that the body always has a dedicated supply of oxygen, this circulation also increases bodily efficiency. In part because of this, mammals are able to regulate their body temperatures.

Blood flows to all four chambers of the heart the left atrium, left ventricle, right atrium, and right ventricle during double circulation. Blood circulation is successfully completed by blood vessels such as the pulmonary artery, aorta, vena cava, and pulmonary vein.

Due to the fact that blood circulates through the heart twice per circuit, it is called a twofold circulation system.

Complete question:

Why has natural selection favored the evolution of double circulation in birds and

mammals?

A - because they have more viscous blood than reptiles and amphibians

B - because they cannot obtain as much oxygen from the air as reptiles and amphibians

C - because they are larger than reptiles and amphibians

D - because they use more energy than equivalent-sized reptiles and amphibians

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