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MrRissso [65]
3 years ago
9

what is accuracy, precision, and reproducibility ? and why are they so necessary in conducting/designing experiments

Biology
1 answer:
jok3333 [9.3K]3 years ago
4 0

Answer:

- Accuracy is the degree by which the measures obtained in an experiment and/or observational procedure are associated with true values.

- Precision is the level of reproducibility that these measurements exhibit in the same (constant) conditions.

- Reproducibility indicates the level of agreement of the results when they are obtained by different researchers by applying the same experimental and/or observational procedures.

Explanation:

In a scientific investigation, it is imperative to achieve higher levels of accuracy and precision when realizing measurements because it ensures that the information is correct (without mistakes). Thus, researchers always try to use better equipment and instrument to make their measurements. Reproducibility is important because it is the only condition that scientists can guarantee to other researchers when they arrive at a result.

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Hundreds or thousands of years.
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Which waves can travel through a vacuum?
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i think sound waves idk im not a scientist

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50 POINTS AND BRAINLIEST TO WHOEVER IS CORRECT FIRST.How are antiviral drugs used? O A. To treat bacterial infections, such as s
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Desde captar el estimulo hasta efectuar una respuesta, la secuencia que sigue en el impulso nervioso es?
Elan Coil [88]

Answer:

creación de un potencial de acción (despolarización), redistribución de iones a través del soma y finalmente repolarización (estado de reposo)

Explanation:

Las neuronas son células nerviosas capaces de transmitir impulsos en forma de corriente eléctrica. Una neurona está compuesta por dendritas, el soma o cuerpo celular y el axón. Durante la transmisión del impulso nervioso, el estímulo es en primer lugar recibido por las dendritas, recorre el soma y termina en el axón. El impulso nervioso se transmite a través de la neurona mediante un proceso de despolarización. Primero, se produce un aumento de la carga eléctrica en el interior de la membrana neuronal debido al aumento de iones de sodio en el interior celular. A continuación, se produce la redistribución de iones dentro del soma, con lo cual la señal se va transmitiendo a lo largo de la neurona. Finalmente, cuando el impulso ha terminado de recorrer el axón, se produce la repolarización o estado de reposo, donde se produce el restablecimiento de las concentraciones iniciales de iones y la neurona vuelve a su estado inicial.

7 0
3 years ago
What properties you would like to see in an ideal preservative use in foods?
zimovet [89]

Answer:

Preservatives are the chemical substances which are added to the products like pharmaceuticals, paints, biological samples, foods and many other products to prevent the disintegration or rotting mainly caused by the growth of microbes or due to undesirable chemical changes.Preservations are of 2 types i.e. chemical & physical. Chemical preservation means addition of chemical compounds to the products. Physical preservation means process such as  refrigeration & drying. Preservatives aims at decreasing the risk of foodborne infections, reduce microbial spoilage & to improve nutritional quality. Some physical methods used for food preservation include  dehydration, freeze drying, refrigeration & UV-C radiation. Chemical And physical preservation  are sometimes used in the combination.

The advantages of using the food preservatives are:

  1. Decrease the moisture content
  2. Increase the acidity
  3. Preventing the ripening process( naturally)
  4. Acts as an antioxidant
  5. Lowering the food waste

Main properties of ideal preservatives :

  • It should not be poisonous
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  • It should have physical as well as chemical stability
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  • It should acts as preservative in small concentration
  • It should retains activity through food manufacturing, shelf life & usage

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