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Blababa [14]
3 years ago
15

Select all that apply.

Biology
2 answers:
Masja [62]3 years ago
3 0

The right answers are B, C and D.

An enzyme is a protein with catalytic properties. Virtually all biomolecules capable of catalyzing chemical reactions in cells are enzymes; some catalytic biomolecules, however, consist of RNA and are therefore distinct enzymes: they are ribozymes.

An enzyme acts by lowering the activation energy of a chemical reaction, which increases the rate of reaction.

DaniilM [7]3 years ago
3 0

Answer:

b,c,d

Explanation:

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Please in need of help
Rzqust [24]

Answer:

the answer is C i know it

Explanation:

i expect brainliest

5 0
3 years ago
Read 2 more answers
How long after the formation of Earth did the first life appear?
djyliett [7]

Answer:

4.54 billon years

Explanation:

the earliest time that life forms first appeared on Earth is at least 3.77 billion years ago possibly as early as 4.28 billion years

6 0
2 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
3 years ago
1. Why must DNA have thymine instead of Uracil? 2. Why is it necessary for RNA to have uracil instead of thymine?
Zigmanuir [339]
Thymine has a methyl group and is better suited for the storage property of the DNA molecule as it is far more stable compared to Uracil.
RNA contain Uracil instead of thymine so as to make differentiation of RNA molecule from DNA molecules easier.
7 0
3 years ago
What type of weather is a warm front most likely to produce?
belka [17]
The anwser is light rain 
4 0
3 years ago
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