Which is the number of characteristic that define all living thing?

EcoRI and HindIII recognize different sequences of DNI and cut the molecule in different points. For this reason, when digesting the molecule with HindIII, the exposed pattern of minisatellites would have looked different than when using EcoRI.

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A restriction enzyme is a degradative polymer that recognizes and cuts up specific nucleotide sequences in DNI. Restriction enzymes can produce cohesive cuts or blunt (abrupt) cuts, depending on the recognition sites. The frequency in which the restriction enzyme will produce the cuts depends on the recognition sequences and the number of bases that compose them.

So restriction enzymes cut DNI molecules into different short sequences of varying lengths. These pieces are called minisatellites and exhibit the existing variation from one person to the next. These short sequences can be separated by using gel electrophoresis and will express a pattern of differentiation. These are the restriction fragment length polymorphisms pattern, RFLP. Each individual has a unique pattern of minisatellites, which makes this person different than the rest.

The method used to identify an individual based on the minisatellites patterns in their DNI is known as DNA fingerprinting. Although the difference in base sequences between two individuals is very small, fragments produced by restriction endonucleases are of different sizes.

Because EcoRI and Hind III recognize different sequences and cut sites, they will cut the same molecule in different pieces, resulting in a different pattern.  

So, when digesting DNI of person 1 and person 2 with

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Answer:

The enzyme has two effects on the substrate either break it down or built it up.

Explanation:

An enzyme is a biocatalyst that reduces the activation energy of chemical reactions.

Enzyme substrate follows the lock and key model.

Enzymes either bind with 2 substrates join them together or bind with a substrate and break it down.

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Answer: Recliners; Decline

Explanation:

If a person spends most of time leaning back on the recliners then the physical fitness of the person will decline.

Leaning back for a longer duration of time decreases the health of spines, as it may lead to pain in back.

Physical fitness needs to be maintained by proper workout and exercise, taking breaks in between if maintaining a constant postures for longer duration of time.

Facilitated diffusion is necessary when cell membranes prevents a substance from diffusing on its own.

Facilitated diffusion is a type of passive transport that involves movement of solute materials down the concentration gradient.

Keywords: Passive transport, Diffusion, Osmosis, Passive transport

Level: High school  

Subject: Biology

Topic: Transport in living organisms

Sub-topic: Passive transport

"The correct term for the process described is feedback inhibition.

Feedback inhibition is a regulatory mechanism where the final product of a metabolic pathway acts as an inhibitor to the enzyme that catalyzes the first committed step of the pathway. This is a form of negative feedback that helps to maintain homeostasis by preventing the overproduction of the end product when it is no longer needed.

To clarify the other terms mentioned:

- Positive feedback occurs when the product of a reaction stimulates the reaction's rate, leading to an amplified response.

- Concerted activation refers to a model of allosteric regulation where the binding of a ligand to one site on an enzyme affects the binding affinity at other sites, usually leading to activation.

- Feedback activation is not a commonly used term in biochemistry. Instead, feedback inhibition is the correct term for the process described.

- Competitive inhibition is a type of enzyme inhibition where the inhibitor molecule binds to the enzyme's active site, competing with the substrate for the active site.

Therefore, the term that correctly describes the process where the end product inhibits the enzyme catalyzing the commitment step in a metabolic pathway is feedback inhibition."

The process of science does not follow a single specific order, it is complex and nonlinear.

The statement that the process of science takes place in one specific order is False. Science is actually a complex endeavor that cannot be reduced to a single, linear sequence of steps. Real science is nonlinear, iterative, creative, unpredictable, and exciting. Scientists often undertake the steps of an investigation in a different sequence or repeat the same steps many times as they gain more information and develop new ideas.

The correct statement is A.) As the human population grows, and fishing technology increases, fish population stocks decline, due to unsustainable fishing practices and overharvesting.

The relationship between the human population, technology, and fish population stocks is one where increased human population and advancements in fishing technology have led to a decline in fish populations. As the demand for fish has grown with the human population, fishing methods have become more efficient with the advent of diesel technology and mathematical ecology. Unfortunately, these advancements have not always been used sustainably, leading to overharvesting and subsequent declines in fish populations. Sustainability in this context means fishing at rates that do not exceed the population's ability to reproduce and maintain healthy population sizes.

Historically, during the age of sailing, fishing efforts had low impact on the environment, allowing fisheries to operate within their carrying capacities. Transitioning to modern times with diesel-powered vessels and advanced fishing techniques, the human capacity to fish has greatly increased. Despite these technological advances, the pressure on fish populations has continued to grow, leading to overfishing and a decline in marine biodiversity, as fish populations are unable to rebound quickly enough to meet intense fishing pressures.

To summarize, the correct statement that describes the relationship between human population growth, technological advancements, and fish stock populations is: A.) As the human population grows, and fishing technology increases, fish population stocks decline. This is due to overharvesting, habitat destruction, and unsustainable fishing practices that have grown alongside human population and technological capabilities.

Answer:

The next step in the process is the formation of a prestar core.

Explanation:

After the interstellar dust and gases concentrate in a determined zone gravity starts to unite them and they gather forming a core that is united by gravity. The surroundings start to disperse and the remaining dust starts to expand in the neighboring regions forming different levels of density in dust and gravity force. Which lately will form the satellites, planets or spacial objects that will be bound to the future sun. It is only the second step in the formation of the new star.

5 CENTIMETERS is too big foe an ant. It would be A. Lizard

The end products of a single episode of meiosis are four haploid cells called gametes.

In a single episode of meiosis, the end products are four haploid cells, known as gametes. These gametes are genetically unique due to the random assortment of chromosomes and crossing over during meiosis. Each gamete contains only one set of chromosomes, which is half the number found in the original cell.

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Answer:

The correct answer will be- hypothesis.

Explanation:

The scientific method is used to understand and explain the natural events of nature. The scientist performs the sequential steps to reach the conclusion which includes experimentation.

The experiments are performed to test the proposed predictions called "hypothesis" of the scientific question which explains the question to a limit. The hypothesis is based on the earlier research done on the question so is considered a well-educated guess.

Thus, the key component of being tested via experiments is the "hypothesis".

The respiratory measurement that is useful in identifying the difference of obstructive and restrictive pulmonary dysfunction is that a person with restrictive lung disease is indicative of having to have trouble of expanding the lungs while the obstructive lung disease has trouble of having to exhale air from the lungs.

Human blood, which has a pH of approximately 7.4, is a slightly alkaline substance. The correct option is B.

The pH 7 is regarded as neutral on the pH scale, which runs from 0 to 14. A substance's pH scale ranges from 0 to 14, with 0 being acidic and 14 being alkaline.

A pH of 7.4 indicates that human blood is somewhat alkaline in nature and is just barely over the neutral range.

In order to maintain its regular function, the body carefully controls the pH of the blood. The body's acid-base balance and other biological activities require a pH that is somewhat alkaline. For general health and the efficient operation of the body's systems, the body's capacity to maintain the right pH of blood is essential.

Thus, the correct option is B.

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The dehydration and hydration of salts are reversible processes. They play a significant role in the chemistry of organic compounds and are fundamental to many biological and physical processes.

Yes, the dehydration and hydration of salts are reversible processes. These reactions play a significant role in the chemistry of organic compounds. For example, the process of dehydration involves the removal of water from a substance, like when a hydrate loses water to form an anhydrous salt. Conversely, hydration is the addition of water. An example of this would be when an anhydrous salt absorbs water to form a hydrate. This behavior is fundamental to many biological and physical processes.

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Answer:

Hydrosphere

Explanation:

All the glacial ice present on earth belongs to the hydrosphere. Hydrosphere represents all the water bodies (ice, vapor, and liquid) existing on earth.

Glaciers are the region where the temperature is low and continuous accumulation of snow takes place in consecutive years. In due course of time, these accumulated snow undergoes compaction as a result of which it subsequently forms ice.

The factors that are responsible for the formation of snow re s follows-

1) Areas of high latitude

2) Low temperature

3) Presence of abundant snow

4) Snow accumulation must be more.

Final answer:

The question involves the genetic cross of two linked genes in Drosophila, focusing on the phenotypic ratios of offspring without crossing over in males. It encompasses the study of genetics and linked gene inheritance patterns.

Explanation:

The student is inquiring about a genetic cross involving two specific linked genes, ebony (e) and claret (ca), in Drosophila melanogaster (fruit flies). The interest is in understanding the phenotypic ratio of the offspring produced under certain restrictions such as the lack of crossing over in male drosophila. The question seems to focus on the concepts of genetics, linked genes, and Mendelian inheritance as they apply to a practical example in Drosophila.

In the case of the genes mentioned, ebony is a body color gene, and claret is an eye color gene in fruit flies. Since the cross results in a phenotypic ratio of 2 wild-type (+): 1 claret (ca): 1 ebony (e), we can infer that the genes are linked and that the cross was designed to demonstrate the inheritance patterns of these linked genes. Understanding these patterns is essential for revealing how traits are inherited together due to their proximity on the same chromosome. Recombination frequency, which is absent in male Drosophila for these genes, plays a crucial role in inheritance patterns of linked genes.