Out of the four measuring instruments (micropipette, serological pipette, transfer pipette, and eyedropper), which do you expect to be the most precise? why?

Answer:

Overall, the scientists who contributed to the current body of scientific knowledge can be described as researchers, innovators, educators, collaborators, and communicators.

Explanation:

brainlist?

The diminishing of a conditioned response; occurs in classical conditioning when an unconditioned stimulus (US) does not follow a conditioned stimulus (CS); occurs in operant conditioning when a response is no longer reinforced. it is called Extinction.

Extinction is an important part of learning as it helps in understanding how associations are formed between stimuli and behavior. It is a form of learning where previously learned associations between conditioned stimuli and responses are weakened or disappear over time. When a previously conditioned response no longer occurs, this is called extinction.

When a previously conditioned stimulus is no longer paired with an unconditioned stimulus, extinction occurs. This occurs due to the weakening of the connection between the conditioned and unconditioned stimuli. The animal learns that the conditioned stimulus no longer predicts the unconditioned stimulus and stops responding to the stimulus.

Extinction also occurs in operant conditioning. This is when a behavior that was previously reinforced is no longer reinforced. The animal learns that the behavior is no longer associated with the reinforcement and stops responding. This can happen due to a change in the environment or a change in the consequences of the behavior.

Extinction is an important part of learning as it helps animals adapt to their environment. By learning that certain stimuli or behaviors no longer predict rewards or punishments, animals can change their behavior to better adapt to their environment.

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The macromolecules are as follows:

Macromolecules refer to the large molecules found in living organisms that form the building block of life.

There are four main macromolecules;

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Answer:D

Explanation:

Answer:

d is the correct answer

Explanation:

Answer:

B. galactose

Explanation:

Galactose is a monosaccharide and is fairly abundant in a human diet

Answer:

True

Explanation:

Humans have 23 pairs of chromosomes, for a total of 46 chromosomes.

Answer:

Reproduction is vital to the success of a species. For a species to survive it must be able to produce more offspring than it loses though old age, disease, and predation.

Explanation:

Living things can reproduce in different ways – asexual reproduction and sexual reproduction.

Hope it helps.

Answer:

Explanation:

-how continents match up when put together like a puzzle

-fossils of the same animals found in two different continents

The major ways in which the global climate is changing include rising temperatures, melting ice and glaciers, sea-level rise, and changing precipitation patterns. Global warming refers specifically to the long-term increase in Earth's average surface temperature, which is one aspect of the broader climate change phenomenon.

Climate change and global warming: Climate change refers to the long-term alteration of temperature and typical weather patterns in a place. Global warming refers to the Earth’s increasing surface temperature, which is mainly attributed to the increasing concentrations of greenhouse gases, particularly carbon dioxide (CO2), in the atmosphere.

Ways the global climate is changing:

These changes are linked to global warming which is a result of the greenhouse effect.

The increase in the amount of greenhouse gases such as carbon dioxide and methane that have entered the atmosphere due to human activities is the main cause of global warming. These gases trap heat from the sun and increase the Earth's temperature. As a result, the temperature of the Earth continues to rise.

Predicted long-term effects of climate change

There are three predicted long-term effects of climate change.

Carbon dioxide emissions from top-emitting nationsCarbon dioxide emissions from the top-emitting nations have increased from 2002-2016. China's carbon dioxide emissions have increased the most, followed by the US, India, and Russia.

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Quack (uh....) quack quack quack quackkk (okay then lollll)

Answer: Gross just wash your head.

Explanation: With shampoo

Answer:

BY THE WAY IN MATERIALS ARE USED

IN IT'S TIME OF CONVINIANCE

Answer:

A. evidence of evolution

Answer:

Science can lead to the development of important technologies to maintain and increase our quality of life.

It is important to know that science is a necessary evolutionary resource for the growth and advancement of a nation.

Explanation:

Science is the main responsible for the creation of any and all technology capable of maintaining or creating better levels of quality of life. Through these technologies, better treatments and cures for diseases are developed, better food distribution, better educational methods, better urban infrastructure, better and greater food production, new jobs, among other factors that are very important for the maintenance of life such as improvement of the elements that we already have.

It is important to note that science is responsible for the progress of a nation. Nations that adopt negative and anti-science stances are doomed to ostracism and will be weak, vulnerable and completely out of date.

Platyrrhines are the primates that belonging to the parvorder Platyrrhini. They are characterized by having prehensile tail a broad, and flat nose and with the sideways-facing nostrils. They have the prehensile tails, which are the long, grasping tails.

Despite its usefulness, the prehensile tail is also found only in the two groups of the primates: Cebus – the capuchin monkeys– and the atelines, a group that is includes the howler (Alouatta spp.) and the spider (Ateles spp.) the monkeys.

What primates have the prehensile tails?

The only primate the genera (Figure 1) that possess prehensile tails are the spider monkeys (Ateles), woolly spider and the monkeys (Brachyteles), howler monkeys (Alouatta), the woolly monkeys (Lagorix), and the capuchin monkeys (Cebus)

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The Columbian Exchange is an important part of the history of artificial selection and selective breeding because it led to the introduction of many new plants and animals to both the Old World and the Americas.

The Columbian Exchange allowed for the transfer of crops, livestock, and other organisms that were not previously present in certain regions, and as a result, new opportunities for artificial selection and selective breeding arose.

For example, the introduction of horses to the Americas by the Spanish Conquistadors allowed Native American tribes to selectively breed these animals for specific traits, such as strength or speed, which in turn influenced their way of life and economy.

Similarly, the transfer of crops like maize, potatoes, and tomatoes from the Americas to Europe and Africa allowed farmers to selectively breed these plants for desirable traits, leading to the development of new varieties that were better adapted to local growing conditions and had higher yields.

The Columbian Exchange, therefore, played a significant role in the development of modern agriculture and the global movement of crops and livestock, and allowed for the spread of selective breeding techniques and artificial selection practices around the world.

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Complete question:

4. Why is the Columbian Exchange an important part in the history of artificial selection and selective breeding?

о Christopher Columbus was the first person to artificially breed animals during the Columbian Exchange.

о Christopher Columbus and Charles Darwin worked together to crossbreed pea plants during the Columbian Exchange.

Christopher Columbus opposed the Columbian Exchange and was a believer in keeping plants and animals in their natural domain and not moving them across oceans.

It was the first transfer of products between the Old World and the Americas; apples are an example of fruit involved.

Answer:

The answer is D.) Diminished effects of diseases on crops.

Explanation: I just took the quiz on edge 2021 :)

An advantage of genetic engineering is the diminished effects of diseases on crops. The correct option is D.

Genetic engineering, often known as genetic modification or genetic manipulation, is the use of biotechnology to directly manipulate an organism's DNA.

The manipulation or modification of an organism's DNA or cells is known as genetic engineering. Cloning is an excellent illustration of genetic engineering in action.

The main worries concerning the negative consequences of GM foods on health include the transmission of antibiotic resistance, toxicity, and allergenic. From the standpoint of allergies, there are two difficulties.

Therefore, the correct option is D, diminished effects of diseases on crops.

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Answer:

Explanation:

The four primary functions of carbohydrates in the body are to provide energy, store energy, build macromolecules, and spare protein and fat for other uses. Glucose energy is stored as glycogen, with the majority of it in the muscle and liver.

The population of deer in the wildlife sanctuary can be estimated using the formula:

P(t) = P(0) * (1 + r)^t

where P(t) is the population after t years, P(0) is the initial population, r is the growth rate per year, and t is the number of years.

In this case, the initial population (P(0)) is 40 deer, the growth rate (r) is 60% per year (0.60), and we need to estimate the population after one year (P1) and two years (P2).

To calculate P1:
P(1) = 40 * (1 + 0.60)^1
P(1) = 40 * (1 + 0.60)
P(1) = 40 * 1.60
P(1) = 64

Therefore, the estimated population after one year is 64 deer.

To calculate P2:
P(2) = 40 * (1 + 0.60)^2
P(2) = 40 * (1 + 0.60)^2
P(2) = 40 * 1.60^2
P(2) = 40 * 2.56
P(2) = 102.4

Therefore, the estimated population after two years is 102.4 deer.

It's important to note that these are estimates and assume that there are no constraints on the population growth. In reality, factors like limited resources, predation, and disease can affect the growth rate and population size.

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Expressions that represent the product of a variable and a coefficient include:

5x - This expression represents the product of the variable x and the coefficient 5.

2y - This expression represents the product of the variable y and the coefficient 2.

-3z - This expression represents the product of the variable z and the coefficient -3.

In algebraic expressions, a variable represents an unknown quantity, while a coefficient is a constant factor that multiplies the variable. When we multiply a variable by a coefficient, we are calculating the product of the two.

For example, in the expression 5x, the variable x is multiplied by the coefficient 5, resulting in the product 5 times x. Similarly, in the expressions 2y and -3z, the variables y and z are multiplied by the coefficients 2 and -3, respectively.

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Genetic mutation and the variations they produce result in population changes and thus, evolution.

Mutation is the change in the sequence of the DNA, that may or may not produce an effect. These mutations can be deletion, addition, substitution, reversion, etc. Some mutations do not produce any morphological effects, such mutations are called silent mutations.

Evolution is the change in the genotype or phenotype of an organism, that takes generations to happen. These are the changes that are heritable. Evolution is a direction-less and a slow process. The change that begins in the individual of a population may take millions of years to express in  the offspring.

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Answer:

The answer is photosphere, convective zone, radiative zone.

Explanation:

The photosphere is a star's outer shell that emits light.

The convective zone is the outer-most layer of the interior.  Energy is carried by convection and the surface is where light is created.

The radiative zone is the layer of the sun that uses nuclear fusion within the core to create energy.  That energy then moves outward as electromagnetic radiation.

As the picture shows, the layers of the sun are the corona, chromosphere, photosphere, subsurface flows, convection zone, radiative zone, and the inner core.

By comparing the migration distances of the unknown DNA samples in Lane D with the known fragment sizes in Lane D, it is possible to estimate the size of the unknown DNA fragments.

In the given information, a DNA agarose gel electrophoresis setup is described. The gel contains wells labeled A, B, C, D, and E, and lanes are represented by letters A, B, C, and D. The numbers 80, 70, 60, and 40 indicate the known fragment sizes (in kilobase pairs) in Lane D.

The gel is filled with a buffer solution, and the Lane D contains the unknown DNA samples.To analyze the unknown DNA samples, the gel electrophoresis process is conducted. DNA samples are loaded into the wells of the gel, and an electric current is applied.

The negatively charged DNA fragments move through the gel towards the positively charged electrode. The smaller fragments migrate faster, while the larger fragments move more slowly.

If the unknown DNA fragments migrate to positions that align with the known fragment sizes, it suggests a similarity in size between the unknown fragments and the known fragments. This information can be useful for determining the approximate size of the unknown DNA samples.

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The second mechanism that allows evolution to happen is called "genetic drift". Genetic drift refers to the random fluctuations of allele frequencies in a population that occur due to chance events such as mutations, genetic recombination, and sampling error.

In small populations, genetic drift can have a significant impact on the gene pool and can lead to the loss of alleles or fixation of new alleles over time. This mechanism is particularly important in isolated or small populations, and can result in genetic divergence between populations. In contrast to natural selection, which operates on traits that confer a selective advantage, genetic drift is a non-selective process that can lead to evolutionary change without any adaptation to the environment.

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Answer:

Nematoda

Explanation:

Answer:

External and Internal Fertilization?

Explanation:

Somatic motor neurons are a type of motor neuron that innervate voluntary effectors, such as skeletal muscle.

They are located in the ventral horn of the spinal cord. These neurons send signals from the brain to the effector, such as a muscle,  in order to activate a specific movement or action. When a somatic motor neuron is activated, an action potential is propagated along its axon, ultimately causing synaptic transmission at its terminus on a muscle fiber.

The release of neurotransmitter at the synapse causes an action potential (or depolarization) of the muscle fiber which results in muscle contraction and movement. So, somatic motor neurons indeed innervate voluntary effectors such as muscles in order to produce motion or movement, but they can also innervate involuntary effectors, such as specialized muscles in the respiratory, reproductive, and cardiovascular system.

These muscles make up the smooth muscle tissues and are innervated by the autonomic nervous system. Thus, somatic motor neurons can also innervate involuntary effectors, in addition to voluntary effectors. Thus, it is accurate to say that somatic motor neurons innervate involuntary effectors.

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Answer:

C

Explanation:

protein with a slightly different sequence of amino acid would be made based on the B strand

The following option is not correctly matched: Plasma - tissue repair

Plasma is the liquid component of blood, which contains various substances such as water, electrolytes, proteins, hormones, and waste products. Plasma helps to transport nutrients, hormones, and waste products throughout the body, as well as regulating fluid balance and blood pressure. However, it does not play a direct role in tissue repair.

Leukocytes (white blood cells) protect the body from invasion by pathogens and foreign substances. Platelets help to control bleeding by forming clots in damaged blood vessels. Red blood cells (erythrocytes) transport oxygen from the lungs to the body's tissues and carbon dioxide from the tissues to the lungs for elimination.

Therefore, the correct option is: Plasma - tissue repair.

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Full Question: Which of the following is not correctly matched?

a. red cells—transporting substances

b. leukocytes—protect the body from invasion

c. plasma—tissue repair

d. platelets—control bleeding