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Answer:

PRECAUTIONS FOR USING A SPECTROPHOTOMETER :

1 . By allowing the lamps and electronics to warm up

2.By cleaning up any spills inside the cuvette compartment

3.By carrying out the set-up procedure in the correct order

4.By ensuring that %T or transmission is used as appropriate

5.By closing the door to the cuvette compartment before reading the result

6.By performing calibration checks after set up

7.By wiping fingerprints and spilt sample off the outside of the cuvette before measuring

8.By using the correct wavelength

PRECAUTIONS FOR USING A FRAME PHOTOMETER:

1. Do not move or Carry the unit when in use or connected to the mains electricity supply

2. There should be sufficient time for the chimney to cool before handling

3. Do not use acetylene with the flame photometer

4. Over adjustment of the fuel valve will cause excess flame

Do not position the product so that it is difficult to disconnect from the mains supply

5. Do not cover the chimney whilst in use.

6. Do not block or obstruct ventilation slots /airways

7. Do not operate or handle any part of the product with wet hands

I HOPE THIS WILL HELP AND IF NOT LET ME KNOW

Answer:

B. extubate immediately and ventilate with a bag-mask device.

The original molecules should be classified as carbohydrates, the correct option is D.

A carbohydrate is a biomolecule comprised of carbon, hydrogen, along with oxygen atoms in a ratio 2:1 hydrogen-oxygen atom ratio.

Carbohydrates are the key source of energy in the body, fueling person's brain, kidneys, heart muscles, additionally central nervous system.

Fiber, for instance, is a carbohydrate that aids digestion, makes one feel full, as well as helps keep blood cholesterol levels in control.

Sugars are the smallest having relatively low molecular weight carbohydrates, which are monosaccharides and disaccharides.

Carbohydrates are a macronutrient and the body's primary source of energy along with proteins and fats.

They consist of starches, sugars, and fiber. Fibers and starch are complex carbs, whereas sugars are simple carbs.

Thus, the correct option is D.

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Answer:

El ARN mensajero (ARNm) lleva las instrucciones para producir proteínas. Como el ADN, las proteínas son polímeros: largas cadenas ensambladas a partir de unidades moleculares prefabricadas que, en el caso de las proteínas, son aminoácidos. Una gran máquina molecular * llamada ribosoma traduce el código del ARNm y ensambla las proteínas.

Explanation:

Answer:

Moving of fan is convection.

The faster moving air from the fan displaces the warmer air that is in direct contact with our skin. This enhances the rate of convective heat transfer, which means we feel cooler.

Answer:

The point of stamen, which connects the anther and the filament is called connective. Its main function is the production of microspores, i.e., pollen grains containing male gametes within the anther lobe.

Explanation:

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Answer:

A chemical compound is a chemical substance consisting of two or more different chemically bonded chemical elements, with a fixed ratio determining the composition. For example, water (H2O) is a compound consisting of two hydrogen atoms bonded to an oxygen atom.

Explanation:

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Answer:

Lamarck's transmutation theory established the foundation of an evolutionary model introducing a new way to research in nature. Darwin's selection theory was proposed in 1859 to explain the origin of species within this epistemological process.

Explanation:

Answer:

Tres orgánulos contienen ADN: el núcleo, las mitocondrias y los cloroplastos.

Explanation:

espero que te ayude

The type of bond that occur between sodium (Na, Group IA) and chlorine (CI, Group VIIA) is ionic. That is option A.

Ionic bond occurs when there is complete transfer of electrons from one atom to another in order to attain a noble gas electron configuration.

A typical example of an ionic compound is sodium chloride which is formed from sodium (Na, Group IA) and chlorine (CI,Group VIIA).

The halogens (which are Group VIIA) all have seven electrons in their outer shell. They gain an extra electron to form an ion with a single negative charge

While the alkali metals (Group IA) all have one electron in their outer shell. They lose this electron to form an ion with a single positive charge.

When complete transfer of electrons occurs, the sodium atom losses one atom to attain Neon atom configuration while the chlorine atom gains one atom from sodium to attain Argon atom configuration.

Therefore, the type of bond that occur between sodium (Na, Group IA) and chlorine (CI, Group VIIA) is ionic.

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Answer: ionic.

Explanation:

Answer:Premenopausal women shed blood as part of menstruation every month, which lowers the level of iron in the body. So, they need more iron than men and are also at a greater risk for this nutritional deficiency.

Explanation:

Answer:

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Explanation:

Explanation:

Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

Answer:

Type of Convergence - Ocean to continent for Cascade/ Ocean to Ocean for Aleutian

Explanation:

Answer:

It is the smallest and basic unit of classification. Taxonomic studies consider a group of individual organisms with fundamental similarities as a species. Thus all the individual members belonging to particular species show all similar characters and can breed among themselves to produce a similar type of organism.

                                                   Thank You

Answer:

Amino acids

Explanation:

the building blocks of proteins are amino acids

Answer:

Nucleic acid

Explanation:

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Answer:

They get their energy from the cell membrane/ nucleus.

Explanation:

Through the process of photosynthesis.

Answer:

These organisms exhibit properties of both fungi and protists. The slime molds and the water molds are members of this group. They all obtain energy by decomposing organic materials, and as a result, are important for recycling nutrients. They can be brightly colored and live in cool, moist, dark habitats.

Answer:

D

Explanation:

D

Organism's niche does not include equilibrium. The correct option is C.

A species' niche is the primary role in the ecosystem. A niche, in other words, is how an organism "makes a living." The organism's role in the flow of energy through the ecosystem will be included in the niche.

Physiological traits are closely related to an organism's phylogeny and determine its environmental niche.

Thus, an organism's niche does not include equilibrium. The correct option is C.

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Answer:

Protons and neutrons are located in the nucleus

Electrons are located in the electron orbital

Answer:

Nucleus and Orbitals

Explanation:

Answer:

scientists dont claim to know the theory they just claim that the results r true

Explanation:

Answer:

true

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Answer:

Eye color is determined by variations in a person's genes. Most of the genes associated with eye color are involved in the production, transport, or storage of a pigment called melanin. Eye color is directly related to the amount and quality of melanin in the front layers of the iris.

The broad spectrum of colors can be attributed to multiple alleles. The correct option is B.

Variation is a word used for different traits present within the species, variation occurs due to recessive and dominant genes present in the organisms and due to mutation.

Mendel gave this theory that the alleles are given independently by the parents and one become recessive and one becomes dominant.

The difference in eye color is due to these alleles. Suppose the mother has black eyes and the father has blue eyes, the child can have both alleles, but only one will show. Mutation can also cause variation, maybe the child has totally different eyes than his parents.

Thus, the correct option is B. multiple alleles.

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Answer:

The answer to this question is C. They are made of carbon, oxygen, and nitrogen.

Explanation:

Have a great day and good luck!

The amino acids, fatty acids, and sugars have in common are they are made of carbon, oxygen, and hydrogen. The correct option is D.

Amino acids are organic compounds that are made up of amine and carboxylic groups. They are the building blocks of protein. The basic particle of amino acids is C, H, and O.

Sugars are sweet carbohydrates. They are made up of carbon, hydrogen, and oxygen. The fundamental formula of sugar is C6H12O6. They are the primary source of energy.

Fatty acids provide the structural strength to the body. They are made of carboxylic acid and aliphatic chains. They can be saturated or unsaturated. So these molecules have the same elements, from which they are made.

Thus, the correct option is D. They are made of carbon, oxygen, and hydrogen.

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Answer:

the stem of a plant and the human spine

Explanation:

They both help stay upright, have a structure, and plants have nodes for leaves and roots and flowers just like we have arms and legs connected to our body.

(i tried my best to explain, i hope it helps<3!)

Answer:

The three advantages of bioplastics

The three disadvantages of bioplastics

Answer:

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Answer:

a

Explanation:

The history of Poland from 1945 to 1989 spans the period of communist rule imposed over Poland after the end of World War II.

Answer:

The word impertinent most likely means disrespectful.