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3 years ago

What is a common chemical reaction mechanism by which cells make polymers from monomers?

Biology

1 answer:

Ray Of Light [21]3 years ago

6 0

Answer:

Hydrolysis reactions

Explanation:

trust

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2. Which kind of nutrients cycle through the atmosphere?

Kamila [148]

Answer:

Nutrient cycle is a process of movement, reuse or recycling of nutrients in that particular environment. They are for both living and nonliving things, elements like carbon, oxygen are recycled through such cycles.

Nutrient cycle in an ecosystem involve:

carbon cycle
nitrogen cycle
oxygen cycle
phosphorus cycle

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3 years ago

The seasoned nurse is instructing the new graduate on information obtained from central venous pressure and pulmonary artery pre

ololo11 [35]

Answer:

Explanation:i dont really know

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3 years ago

What is cross-pollination?

torisob [31]

The answer is B. Cross-pollination occurs when pollen fertilizes female egg cells on the same flower.

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3 years ago

Read 2 more answers

Vadim26 [7]

Answer:

See explanation

Explanation:

Electroplating involves the coating of one metal on another metal. It is an electrochemical process. The positive electrode is the coating metal while the negative electrode is the metal on which the coating is to be performed.

Since copper is to be coated on an iron nail. A copper plate is made the positive electrode while the iron nail should be the negative electrode.

The electrolyte used in the process should be a copper salt e.g CuSO4 solution.

As electrolysis progresses, the copper electrode(positive electrode or anode) gradually wears away due to the fact that the copper ions are going into the solution and are being deposited on the iron nail.

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3 years ago

What are the precautions that should be token when using a photometer? please help me

Maksim231197 [3]

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

8 0

2 years ago