After it has been transcribed, a eukaryotic mRNA molecule usually is subject to post-transcriptional modification which includes: After it has been transcribed, a eukaryotic mRNA molecule usually is subject to post-transcriptional modification which includes: Splicing and excision of introns Circularization of the mRNA Binding to the promoter of the gene from which it was transcribed Removal of exons Binding to the ribosomes

The function of a cell is determined by the organelles it has.

In the image, cell A contains several Golgi apparatuses while cell B contains many mitochondria. In other words, cell A is likely to be for storage of proteins while cell B is likely for energy generation.

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Based on the cell organelles present in cells A and B;

A cell organelle is a specialized subunit with a particular function that is typically found within a cell in cell biology.

Cell organelles are usually membrane-bound and found in mainly eukaryotic cells.

Some examples of cell organelles include:

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An adult human's hemoglobin contains α and β chains, with the association of iron in a porphyrin ring. So options A, B, E, and F are correct.

The blood of an adult human contains red blood cells that have Hemoglobin. Hemoglobin as the name suggests, contains the 'Heme' part and the 'globin' part. Together, they form a quarternary structure.

The globin part is formed with the α and β chains, occurring in sets of two forming a condensed structure. The globin part holds the heme part at the center of each chain.

The heme part is formed of a porphyrin ring which associates with iron. This is very essential for the affinity of oxygen.

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Answer:

Honors Earth Science Weather Erosion Impact Quiz

1. The most northern of the islands is the OLDEST. The most southern of the islands is the YOUNGEST. The most southern of the islands has experienced LESS weathering...

2. d. thousands of years

3. c. acid rain breaking down...

d. oxidation of certain...

4. b. root wedging

5. b. hydrolysis

d. dissolution

6. b. delta

7. ice wedging

Explanation:

These were the graded correct answers.

The most northern of the islands is the OLDEST. The most southern of the islands is the YOUNGEST. The most southern of the islands has experienced LESS weathering.

Oceanic islands are those islands which rise to the surface of land from the floors of the ocean basins. Continental islands are simply the unsubmerged parts of continental shelf which are entirely surrounded by water from all the sides. Many of the larger islands of the world are of the continental type only.

As volcanoes erupt, they build up different layers of lava which may eventually break the water surface. When the tops of these volcanoes appear above the water level, an island is formed. While the volcano is still beneath the ocean surface, it is known as a seamount. Oceanic islands can form from the different types of volcanoes.

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Even if all the cells have the same DNA they biochemical function are different, that's because differents sets of genes must be turned on and off in each cell type by the action of enzymes and other molecules. Each cell have the same 20,000 or so genes but they are biochemically selected by the action of molecules as hormones and chemical signaling. Therefore, different cells use different parts of the DNA code as directions.

Answer:

Photosynthesis

Explanation:

carbon dioxide +water ----> glucose + oxygen

Light and chlorophyll are needed for this to be done...

This is the word equation for photosynthesis

The correct answer is C.) Bicarbonate

Answer:

D.

Explanation:

Carbon Dioxide

Answer:

The answer is "decreases the number of bases in the sequence".

Explanation:

Please find the complete question in the attached file.

The deletion mutation has been the retraction of a gene encoding base which alters the read-frame with codon it beyond mutation point. Its mutation or replacement includes the substitution of a framework with another base, throughout this situation the diagram describes the number of bases in the sequence belonging to the "X" marked area as the comparison of deletion and replacement mutations.

Answer:

decreases the number of bases in the sequence

Explanation:

:)

Answer: Mitosis has only one round of cell division, while meiosis has two........ Mitosis produces daughter cells (diploid cells) that are identical to the parent cell, while mitosis produces haploid/monoploid cells that only have half of the normal number of chromosomes.

Explanation: I remember I studied this last year. it was a pain in the butt.

Answer:

Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.

If a human can continuously eat without feeling full, they might be in deficit of the hormone leptin, option 6 is correct.

Leptin is primarily produced by fat cells and acts as a satiety hormone, signaling to the brain that the body has sufficient energy stores. It helps regulate appetite and energy balance by suppressing hunger and increasing energy expenditure. When leptin levels are low or the body becomes resistant to its effects, the brain doesn't receive the signal that the body is satiated, leading to excessive food intake and a lack of feeling full.

While the other hormones listed, such as glucose, neuropeptide Y, testosterone, glucagon, and PYY, may play a role in appetite regulation and energy balance, leptin is specifically associated with signaling fullness and satiety. Its deficiency or resistance can disrupt the normal feedback loop between the body and the brain, resulting in continuous eating without feeling satisfied, option 6 is correct.

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A plant converts carbon dioxide into carbohydrate is an example of chemical change.

Chemical synthesis, or, alternatively, chemical breakdown into two or more separate molecules, occurs when one material reacts with another to create a new substance. These processes are referred to as chemical reactions, and they often cannot be reversed except by other chemical reactions. A chemical change is the transformation of one substance into another, the emergence of new compounds with distinct properties, or any combination of these. It happens when two compounds mix to create a new material (synthesis or either decomposes to form more substances).

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The sun angle in Springfield during winter can be calculated by dividing the total daylight hours by 2 and then multiplying it by 15 degrees. Therefore, if the daylight time is about 9 hours, the sun angle in Springfield would be approximately 67.5 degrees.

To determine the sun angle in Springfield during winter, we can use a basic calculation. The sun's apparent movement across the sky can be divided into 360 degrees, representing a full circle. Considering that there are 24 hours in a day, each hour corresponds to 15 degrees of the sun's movement (360 degrees divided by 24 hours).

In this case, if the daylight time during winter in Springfield is about 9 hours, we can calculate the sun angle by dividing this value by 2 (to account for the fact that the sun is not directly overhead during winter) and then multiplying it by 15 degrees. Therefore, (9 hours / 2) * 15 degrees equals approximately 67.5 degrees.

This calculation assumes a simplified model where the sun's movement is linear and neglects factors such as the Earth's axial tilt and atmospheric refraction.

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Answer:

soil, virtually lifeless area

Answer:

The answer will be:

A. C3

The processes of converting inorganic substances into organic substances are called carbon fixation. It can include C3 photosynthesis, C4 photosynthesis and CAM. C3 is least common in arid areas.

Carbon fixation is the process, when photosynthetic bacteria form organic carbon from inorganic ones.

Carbon fixation can have three processes as follows:

Thus, option a is correct.

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Answer:

Include a Hypothesis

Explanation:

Here is the answer for u

Answer:

Yes, "Mr.Q kicked the soccer ball 40 N to his BF Cristiano Ronaldo" describes a force, specifically the force that Mr.Q applied to the soccer ball to make it move in the direction of Cristiano Ronaldo. The unit of measurement used, N (newtons), is the standard unit of force in the SI (International System of Units), which further supports this interpretation.

Answer:

b DNA and RNA

Explanation:

because those are the two one

(A) Agriculture impacts land, water, biodiversity, and climate. (B) Crop production challenges: limited land, climate change, water scarcity, soil degradation, pests. (C) Endangered species: small populations, habitat loss, declining trend, vulnerable, ecologically important.

A. Agriculture has several environmental impacts, including:

1. Land degradation: Intensive agricultural practices such as deforestation, excessive irrigation, and heavy use of agrochemicals can lead to soil erosion, loss of soil fertility, and degradation of ecosystems.

2. Water pollution: Runoff from agricultural fields containing fertilizers, pesticides, and animal waste can contaminate water bodies, leading to eutrophication, algal blooms, and water quality deterioration.

3. Biodiversity loss: Conversion of natural habitats into farmland reduces habitat availability for wildlife, leading to the loss of plant and animal species. Pesticides and herbicides used in agriculture can also harm beneficial organisms, impacting biodiversity.

4. Greenhouse gas emissions: Agricultural activities, including livestock production and rice cultivation, contribute to greenhouse gas emissions such as methane and nitrous oxide, which contribute to climate change.

5. Water scarcity: Agriculture is a major consumer of freshwater resources. Excessive water extraction for irrigation can deplete water sources, causing water scarcity and ecological disruptions.

B. Challenges of producing more crops include:

1. Limited land availability: The expansion of agricultural land is limited, and competing land uses like urbanization and industrialization reduce available arable land.

2. Climate change: Changing weather patterns, increased frequency of extreme events, and rising temperatures pose challenges for crop production, affecting yields, water availability, and pest and disease prevalence.

3. Water scarcity: Many regions face water scarcity, limiting irrigation for crop production. Efficient water management practices and drought-resistant crops are needed.

4. Soil degradation: Overuse, improper irrigation, and erosion lead to soil degradation, reducing its fertility and productivity. Soil conservation practices are necessary to maintain soil health.

5. Pest and disease management: Pests, diseases, and invasive species can significantly impact crop yields. Developing resistant crop varieties and implementing integrated pest management strategies are essential.

C. Characteristics of endangered species include:

1. Small population size: Endangered species often have small populations that make them more vulnerable to extinction due to genetic and demographic factors.

2. Restricted range or habitat loss: Endangered species may have a limited geographic range, making them susceptible to habitat loss, fragmentation, or degradation.

3. Declining population trend: Endangered species typically exhibit a declining population trend over time, indicating their risk of extinction.

4. Vulnerability to threats: Endangered species are more susceptible to various threats such as habitat destruction, pollution, climate change, poaching, and invasive species.

5. Ecological significance: Endangered species often play crucial roles in ecosystems, such as being keystone species or indicators of ecosystem health, and their decline can have cascading effects on other species and ecosystem processes.

Protecting and conserving endangered species is crucial to maintain biodiversity, ecosystem stability, and overall ecological balance.

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Complete question :

A. What are the environmental impacts of agriculture? elaborate your answer ?

B. What are the challenges of producing more crops? elaborate your answer?

C. What are characteristic of endangered species ?

Anything that occurs before the zygote is an example of the prezygotic mating barrier. A common example is behavior isolation, which occurs when two different species use different calls, rituals, or dances and will not attract mates of the same species.

A species' inability to successfully breed with related species due to geographical, behavioral, physiological, or genetic barriers or differences is referred to as reproductive isolation.

There appear to be five major types of prezygotic reproduction barriers: spatial isolation, temporal isolation, mechanical isolation, gametic isolation, and behavioral isolation.

Anything that occurs before the zygote is an example of the prezygotic mating barrier.

A common example is behavior isolation, which occurs when two different species use different calls, rituals, or dances and will not attract mates of the same species.

Thus, in this way prezygotic mating barrier reinforce reproductive isolation in an area of secondary contact.

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5' ATATCAGTACGT 3'

AS T is complemntary to A and C is complementary to G

The overreaction of the immune system is called cytokine storm. In order words, it is an immune system anomaly caused by the overreaction of the immune system as a result of too many inflammatory signals.

Immune system can be defined as a normal functioning body physiology system which helps the body fight infections and other diseases.

In generally terms, a normal functioning immune system includes the following: Leucocytes, Bone marrow, Lymph system

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Answer:

The Y chromosome do not go through crossover

Explanation:

Typically, genes from the mother and father are shuffled -- or, "cross over" -- to produce a genetic combination unique to each offspring. But the Y chromosome does not undergo crossing over, and, as a result, its genes tend to degenerate, while repetitive DNA sequences accumulate. Each chromosome is made up of DNA.

Answer:

it is the y chromosomes that do not go through crossover.

Explanation:

high temperature and low rainfall this leads to the need for adaptation to conserve water and tolerate extreme heat one of the main environmental pressures for cacti is water

Pain receptors in the skin send signals to the central nervous system (CNS) for processing. These pain receptors are an example of sensory neurons.

Sensory neurons are a type of neuron that carry information from the sensory receptors to the CNS. Sensory receptors are specialized cells or structures that detect stimuli such as light, sound, temperature, pressure, or pain. Sensory neurons have long dendrites that receive signals from the sensory receptors and short axons that transmit signals to the CNS.

Sensory neurons are part of the afferent division of the nervous system, which means they bring information to the CNS. The opposite of sensory neurons are motor neurons, which are part of the efferent division of the nervous system and carry information from the CNS to the muscles or glands.

An example of how sensory neurons work is when you touch a hot stove. The pain receptors in your skin detect the high temperature and send signals to the sensory neurons. The sensory neurons then carry the signals to the spinal cord and the brain, where they are processed and interpreted. The brain then sends signals to the motor neurons, which activate the muscles in your arm and hand to pull away from the stove.

Some examples of sensory neurons are:

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Answer:

1.  Diffusion

2. Osmosis

3. Diffusion

4. Facilitated Diffusion

5. Osmosis

6. Diffusion

Explanation:

Facilitated Diffusion- Move molecules across the cell membrane in a passive transportation with  membrane protein.

Osmosis- Move water molecules from high concentration to low concentration.

Diffusion- Evenly spread molecules from high concentration to low concentration.

1. Gases move across the room with ease without energy.

2. Water enter skin cells allowing cells to grow and wrinkle without energy.

3. Gases move with ease without energy.

4. Glucose requires energy to transfer.

5. Water leaves throat when concentration outside of throat is less that that inside the trough so water moves outwards.

6. Oxygen is uses passive diffusion does not require energy and will with ease move in and through a cell.

Answer:

: any of a series of chemical reactions in photosynthesis not requiring the presence of light and involving the reduction of carbon dioxide to form carbohydrate especially : calvin cycle.

Answer:

D. Plants

Explanation:

They get the Carbon Dioxide for photosynthesis

In this case, the metabolic status of daughters can be classified as a quantitative variable because it is characterized by continuous and numerical values.

The metabolic status of daughters refers to the physiological state of a daughter cell in terms of its metabolic processes and energy utilization. In the field of biology, the classification of variables can help determine the type of data that is being analyzed and the appropriate statistical techniques that should be used.

The metabolic status of daughters can be classified as either a variable categorical or quantitative variable. A categorical variable is a variable that can take on one of a limited number of categories or values, and is often used to describe qualitative or categorical data. A quantitative variable, on the other hand, is a variable that can take on an infinite number of values, and is often used to describe quantitative data.

For example, the metabolic rate, which is a measure of the rate at which energy is used by cells, can be quantified and expressed as a numerical value. The metabolic rate of daughter cells can vary depending on various factors, such as the availability of nutrients, the presence of metabolic inhibitors, and the stage of cell division.

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Euglenozoa are monophyletic group of flagellated protists as well as free-living, symbiotic, and parasitic species. According to genetic studies, Euglenozoa are meither plant nor animal despite the suffix zoa. They are somewhat the living dependent of a few of the primal unicellular organisms called eukaryotes. It is also a genus of unicellular flagellate protists where the word "unicellular" means that the organism consists of one cell only that's why they're not considered plant or animals.

Answer:

decrease

Explanation:

The light intensity is changed, by decreasing the light intensity. The rate of photosynthesis should decrease and therefore the amount of oxygen bubbles should decrease.