The scientist responsible for disproving the theory of spontaneous generation:

Options:

A. They depend on the myelination of nerve axons

B. They include EPSPs and IPSPs

C. They are changes in the membrane potential of the postsynaptic terminal of a chemical synapse

D. They are caused by neurotransmitters

Answer:

An additional neuron known as a fascilitator is triggered when the postsynaptic neuron receives an unconditioned stimulation. The presynaptic neuron then responds to this cell, leading to sensitization.

When the neurotransmitter separates from its receptor, postsynaptic potentials start to be terminated. After that, the receptor is free to resume its original structural form. The receptor will now reopen ion channels that were opened when the neurotransmitter was attached to it.

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Option D seems to provide the most information about the total fertility rate, which is 3.8 five years later.

A variety of factors contribute to the decline in fertility rates. One of the factors is primarily due to job changes, reproductive health issues, and other factors.

Thus, the answer is option D is the mathematical option that best explains the total fertility rate of 3.8 five years later.

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Without undergoing any changes itself, the enzyme makes changes to the substrate.

An enzyme is a biological catalyst that acts by lowering the activation energy in a chemical reaction.

In a chemical reaction, an enzyme binds to a substrate to convert it to one or more products.

In conclusion, without undergoing any changes itself, the enzyme makes changes to the substrate.

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Answer:

Simple reflex action is not really learned and is automatic and involuntary whereas conditioned reflex action is voluntary and has to be learned.

Explanation:

The phrase used by the president was specifically chosen to convince the public to support the war is “unprovoked and dastardly attack”. Thus, option "B" is correct.

President Roosevelt was in office when Pearl Harbor happened, and it was the perfect occasion that the government of the United States needed to enter a war that was clearly being won by the Germans and Japanese, they had already taken decisions prior to this to help the allies, but they couldn´t directly send troops when the bombings on Pearl Harbor took place, and since the USA had never provoked, attacked or done anything to upset Japan, they were now able to declare war on Japan an its allies.

Thus, option "B" is correct.

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Answer:

B

Explanation:

Did the assignment

Lock and key theory states that enzymes have a specific shape that directly correlates to the shape of the substrate.

Enzymes are globular protein that catalyses a biological chemical reaction.

One of the characteristics of enzymes is that they are usually substrate-specific i.e. They bind and act to a particular substrate.

This characteristics is explained by the lock and key theory of enzymes, which states that enzymes have a specific shape that directly correlates to the shape of the substrate.

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If Ms. Gates is eligible for both the Medicare and the Medicaid, then her drugs will be covered under part D. So, she should be informed that Medicare will generally cover the drugs. But the ones that are not covered will be covered under Medicaid.

The Medicare and Medicaid program are federal and state government program for the people who have limited assets and are 65 or older.

These program provides healthcare coverage to the people. The Medicare program although covers most of the drugs, but some drugs are excluded from the Medicare, these drugs are mostly covered by Medicaid program.

So, the Ms. Gates should be informed that all her drugs will be covered under the Medicare and Medicaid privileges.

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Option:

A. People were able to use their horses for new tasks.

B. New jobs were created.

C. Blacksmiths needed to gain new skills to continue working.

D. Families were able to travel farther more easily.

Answer:

Blacksmiths needed to gain new skills to continue working. Thus, the correct option is C.

Engineer Nikolaus August Otto developed the first four-stroke internal combustion engine and established the Otto cycle, a well-known theoretical cycle that governs the operation of explosive engines.

Otto's engine outperformed the steam engine in use at the time in a number of ways. One of them is their light weight, as steam engines need large water reservoirs and fuel to burn in order to heat the water, which in this case would be charcoal or firewood. In addition to being light, the internal combustion engine consumed little fuel, even benzene. Another factor was Otto cycle internal combustion engines' power, which also outperformed steam engines in terms of size ratio.

These benefits put pressure on the automotive sector to build vehicles with this kind of technology. Blacksmiths were compelled to learn new skills in order to use this new technology.

In addition to being light, the internal combustion engine consumed little fuel, even benzene. Another reason was Otto cycle internal combustion engines' power, which also outperformed steam engines in terms of size ratio.

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Answer:

Totipotent Stem Cells - They can differentiate into any type of human body cell or the placenta.

Example: Fertilized egg cells.

Pluripotent Stem Cells are from totipotent cells and can differentiate into any cell in the human body; however, not many are in the placenta.

Example: Blastocyst cells.

Multipotent Stem Cells - They can only differentiate into closely related cells.

Example: Blood stem cell

Unipotent Stem Cells - They can only produce their type of cell.

Example: Skin stem cells (which can only become a new skin stem cell).

Explanation:

The type of transcriptional control in operons in which a regulatory protein is an activator and stimulates transcription is called positive control.

The regulatory DNA sequences are the important class of factors that controls the transcription of an operon.

The types of transcriptional control in operons in which a regulatory protein is an inhibitor and inhibits transcription are called negative control.

Therefore, the positive control and negative control of the transcription of an operon depend on the nature of regulatory proteins.

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Answer:

they are calculating the theoretical yield

a. the starting cell is 2n. how many chromosomes does it have?

b. hom many chromosomes will it have after Meiosis 1?

c. how many chromosomes will it have after Meiosis 2?

Answer:

the answer is d

Explanation:

because as the first statement tell you it is a carbohydrate so B is eliminated .

and we know that it is found in plants so A is eliminated too.

and it makes cell wall and can not easily dissolve in water and d is eliminated so definitely the answer is C

The true statement about cellulose is a complex carbohydrate. The correct option is C.

Cellulose is a glucose-based linear polymer (polysaccharide) that is found in nature. Its chemical formula is (C6H10O5)X. Plants typically produce it through synthesis.

The primary characteristics of this polysaccharide are biodegradability and hydrolysis resistance. The sturdy formation of plant cell walls is greatly aided by cellulose, a hard, fibrous, and water-insoluble polysaccharide. 20.

The fibrils (bundles of microfibrils) and microfibrils (bundles of polysaccharides) made up of cellulose chains make up the plant cell wall. It is colorless and tasteless.

Therefore, the correct option is C. Cellulose is a complex carbohydrate.

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The list of names in the correct order using the alphabetic system will have the names listed from the letters A to Z.

An alphabetic system is a system which orders items based on the ordering of alphabets.

The alphabets in English language are 26 in number from A to Z.

Since no names were provided, the list of names in the correct order using the alphabetic system will have the names listed from the letters A to Z.

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Answer:

Explanation:

Both Groundwater and surface water are largely replenished by rain water.

Answer:

C: replenishable but not renewable

Explanation:

Answer:

Meiosis is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each chromosome.

Explanation:

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The statement which best explains why cooperation between countries is necessary to prevent a tragedy of the commons is that If one country overuses a common resource, it depletes the common resource for all and is denoted as option B.

This is referred to as a situation in which the resources are available to the people and they are overused due to the ease of access to them.

Cooperation between countries will help to curb a country overusing a common resource which will lead to the depletion of the common resource for all.

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Answer:

soil reaction is an indication of the acidity or alkalinity of soil and is measured in pH units

Answer:

considering the straight allele is dominant then the curved thumb allele must be recessive. so,if someone has two recessive alleles they will express that characteristic. Therefore, the person's thumbs would be curved

Schools have to give proper meals and carbohydrates to students.

A balanced diet is one that includes a variety of foods in the right amounts and ratios to meet the body's needs for calories, proteins, minerals, vitamins, and other nutrients. A small portion of the diet is also set aside for extra nutrients to last through the brief period of leanness. In this situation, we must choose a unique menu that offers the

In this context, we have to first prepare the list of the number of carbohydrates, lipids, and proteins and then we have to identify the maximum amount required in the meal. then observe the common food in the school.

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The origins of the lateral head of the gastrocnemius muscle are the lateral condyle and posterior surface of the femur.

A gastrocnemius muscle is also referred to as leg triceps and it can be defined as the largest, posterior, and most superficial muscle of the calf of the human leg, which enables the flexing of the knee and foot because it runs to the Achilles tendon from two lateral heads that are attached to the femur.

In this context, we can infer and logically deduce that the lateral condyle and posterior surface of the femur are the origins of the lateral head of the gastrocnemius muscle.

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Answer:

The main difference between intercellular and extracellular fluid is that intracellular fluid is the liquid found inside the cell whereas extracellular fluid refers to all the body fluids outside the cell.

Recombinant DNA technology is used to prevent a genetic disorder caused by a mutation in a single gene by reinserting nucleotide sequences in a normal linear order.

A gene is a fragment of single-stranded DNA that is used during transcription and translation to produce a protein.

A mutated gene has a different nucleotide sequence when compared to the normal gene, which can be corrected by using recombined normal sequences.

In conclusion, recombinant DNA technology is used to prevent a genetic disorder caused by a mutation in a single gene by reinserting nucleotide sequences in a normal linear order.

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The blank space in the task content should be filled with endospores.

As an alternative reproduction form, during endospore formation, the bacterium divides within its cell wall, in which case, one part engulfs the other. Endospores are resistant to harsh growth conditions and are able to survuve these conditions and lie dormant for extended periods, even centuries.

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US clean water act as a prompted the developers to install stormwater management systems to handle the movement of polluted water.

The Clean Water Act (CWA) establishes the fundamental framework for controlling pollution discharges into American waters and setting quality criteria for surface waters.

In 1972, the US Clean Water Act was adopted. The Act's principal goal was to control and minimize the entry of pollutants into water bodies. This was done to make the water bodies cleaner, clearer, and more suitable for usage by the general public and the abundant life forms that were already present.

In order to handle the removal of contaminated water from the water bodies, the developers decided to install stormwater management systems.

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1. Bees, flies, wasps, butterflies, and moths are significant insect pollinators. Moths are drawn to white flowers that are open at night, but bees and butterflies are drawn to brilliantly colored blooms with powerful scents that are open during the day.

The act of moving pollen grains from an anther to a flower's stigma is called pollination. Flowers that are pollinated by insects typically generate a sweet nectar that the insects visit to consume. If a flower is self-pollinating, fertilization occurs when pollen stock from an insect contacts the stigma of the bloom. If the bug is bisexual, it will fly to another bloom and disperse the pollen.

2. Most flowers advertise themselves by being brightly colored and perched on long stems so they wave in the air and are closer to where insects are flying, as opposed to on the ground, where they would otherwise be. A flower's petal sizes and shapes, in addition to color, can draw insects.

3. Flowers draw insects because of their aroma or vibrantly colored petals. Nectar is a delicious liquid that many flowers generate that is consumed by insects. The female part of the flower is the carpel.

Answer 2. Flowers that are pollinated by insects have characteristics that enable insects, birds, or other animals to pollinate them while consuming the nectar. When an insect brushes by the stigma of a flower, whether it is the same bloom or another, pollen grains will adhere to the insect's outer layer and stick to the flower's stigma, pollinating the flower. When the two seˣ cells combine, fertilization occurs, the ovule develops into a seed, and the ovary becomes a fruit. The pollen grain then grows a pollen tube down the style to reach the ovary, which contains the ovules.

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